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Rozprawy doktorskie na temat „GSM band”

Autor: Grafiati

Data publikacji: 12 kwietnia 2025

Data aktualizacji: 25 lipca 2025

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1

Park, Yunseo. "Direct Conversion RF Front-End Implementation for Ultra-Wideband (UWB) and GSM/WCDMA Dual-Band Applications in Silicon-Based Technologies." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7563.

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This dissertation focuses on wideband circuit design and implementation issues up to 10GHz based on the direct conversion architecture in the CMOS and SiGe BiCMOS technologies. The dissertation consists of two parts: One, implementation of a RF front-end receiver for an ultra-wideband system and, two, implementation of a local oscillation (LO) signal for a GSM/WCDMA multiband application. For emerging ultra-wideband (UWB) applications, the key active components in the RF front-end receiver were designed and implemented in 0.18um SiGe BiCMOS process. The design of LNA, which is the critical cir

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Zaraket, Elie. "Réalisation d’une 'méta-peau' récupératrice d’énergie électromagnétique pour des applications WBAN." Electronic Thesis or Diss., Bordeaux, 2025. http://www.theses.fr/2025BORD0035.

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Les progrès récents dans le domaine des technologies biomédicales et de la santé connectée ont considérablement accéléré le développement de dispositifs flexibles et portables pour une surveillance continue de la santé. Le marché de l'Internet des Objets Médicaux (IoMT) devrait connaître une croissance rapide avec un taux annuel de 38.5% entre 2024 et 2032, largement porté par les Réseaux de Capteurs Corporels Sans Fil (WBAN). Cependant, la conception de dispositifs IoT portables, miniaturisés et biocompatibles, capables de fonctionner de manière autonome, reste un défi majeur, en particulier

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Otárola, Correa Diego Antonio, and Gonzales Frank Campos. "Modernización de la red de acceso de un operador móvil para el caso de Lima Metropolitana." Bachelor's thesis, Universidad Ricardo Palma, 2015. http://cybertesis.urp.edu.pe/handle/urp/1277.

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La presente tesina titulada “Modernización de la red de acceso de un operador móvil para el caso de Lima Metropolitana” expone una propuesta para un operador que tiene como objetivo poder incrementar su cobertura de servicio de segunda y cuarta generación, para esto se definen conceptos teóricos en base a lo que son las tecnologías de telefonía móvil celular de tipo GSM, UMTS y LTE y se compararan con las características técnicas de los equipos que se plantean usar demostrándose que estos pueden optimizar la red de acceso del operador en cobertura y funcionamiento para brindar un mejor servici

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4

Vehovský, Radek. "Vliv uživatele na miniaturní antény v mobilních aplikacích." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-219972.

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This master’s thesis deals with user influence on miniature antennas in mobile application. Electrically small antennas including fundamental performance properties and limitations are introduced in the theoretical section of this thesis. This section also deals with microstrip antennas and their common types. The accent is on PIFA antennas, their typical constructions and methods of miniaturization. In the practical section, dual-band PIFA antenna for operation at frequencies of systems GSM900 and GSM1800 is designed with the assistance of electromagnetic field simulator CST Microwave Studio.

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Barros, Fabien de. "Conception, Réalisation et Caractérisation de papiers fonctionnels pour des applications de filtrage électromagnétique." Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENT118/document.

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Le brouillard électromagnétique dans lequel nous vivons en permanence estaujourd’hui montré du doigt car, outre les risques sanitaires qu’il pourrait engendrer, illimite l’usage de certaines technologies. L’importance des interférences entre réseauxsans fil, ou la peur du piratage sur ces mêmes réseaux, en sont deux exemples. Cetravail de thèse vise à développer un nouveau moyen de protection contre certaines deces ondes électromagnétiques. Plus spécifiquement, ce travail se focalise sur unetechnologie capable de filtrer uniquement les ondes WiFi et GSM à travers de grandessurfaces d’une habit

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6

Kowlgi, Srinivasan Sandeep. "Etude des émetteurs radiofréquences multistandards destinés aux stations de base GSM/WCDMA/LTE." Thesis, Paris, ENST, 2013. http://www.theses.fr/2013ENST0018/document.

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Les stations de base de télécommunications contemporaines pour les réseaux GSM / EDGE, WCDMA / HSPA et LTE sont de plus en plus complexes et à forte intensité énergétique. La solution privilégiée est un émetteur véritablement multi-standard. Modernes émetteurs des stations de base sont souvent multi-standard, en ce qu'ils peuvent supporter différentes normes ou de modes air-interface. Cependant, ce n'est pas réalisé par le fonctionnement simultané des normes différentes ou des «modes», mais par des moyens de reconfiguration, qui sont inefficaces et coûteux. Nous envisageons un émetteur entière

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7

Paiva, João Manuel Lima. "Análise da QoS na perspectiva do utilizador dos serviços mais comuns em sistemas celulares GSM e UMTS." Master's thesis, Universidade de Aveiro, 2007. http://hdl.handle.net/10773/1877.

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Mestrado em Engenharia Electrónica e Telecomunicações<br>O aparecimento da tecnologia GSM mudou significativamente o panorama das telecomunicações. Desde que surgiram as primeiras redes comerciais,em 1991, o número de utilizadores tem aumentado continuamente. Mais recentemente, os sistemas celulares de terceira geração, entre osquais o UMTS, vieram colmatar algumas insuficiências do GSM aopermitirem acessos de alto débito para suporte de serviços de banda larga,tais como, acesso à Internet e aplicações multimédia. Actualmente, face às elevadas taxas de penetração e de utilização dos sistemas

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8

Kowlgi, Srinivasan Sandeep. "Etude des émetteurs radiofréquences multistandards destinés aux stations de base GSM/WCDMA/LTE." Electronic Thesis or Diss., Paris, ENST, 2013. http://www.theses.fr/2013ENST0018.

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Les stations de base de télécommunications contemporaines pour les réseaux GSM / EDGE, WCDMA / HSPA et LTE sont de plus en plus complexes et à forte intensité énergétique. La solution privilégiée est un émetteur véritablement multi-standard. Modernes émetteurs des stations de base sont souvent multi-standard, en ce qu'ils peuvent supporter différentes normes ou de modes air-interface. Cependant, ce n'est pas réalisé par le fonctionnement simultané des normes différentes ou des «modes», mais par des moyens de reconfiguration, qui sont inefficaces et coûteux. Nous envisageons un émetteur entière

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9

Ahmed, Mamun. "Adaptive Sub band GSC Beam forming using Linear Microphone-Array for Noise Reduction/Speech Enhancement." Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-6174.

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This project presents the description, design and the implementation of a 4-channel microphone array that is an adaptive sub-band generalized side lobe canceller (GSC) beam former uses for video conferencing, hands-free telephony etc, in a noisy environment for speech enhancement as well as noise suppression. The side lobe canceller evaluated with both Least Mean Square (LMS) and Normalized Least Mean Square (NLMS) adaptation. A testing structure is presented; which involves a linear 4-microphone array connected to collect the data. Tests were done using one target signal source and one noise

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10

Crawford, Alistair, and n/a. "Bad Behaviour: The Prevention of Usability Problems Using GSE Models." Griffith University. School of Information and Communication Technology, 2006. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20061108.154141.

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The aim of Human Computer Interaction or HCI is to both understand and improve the quality of the users' experience with the systems and technology they interact with. Recent HCI research requirements have stated a need for a unified predictive approach to system design that consolidates system engineering, cognitive modelling, and design principles into a single 'total system approach.' At present, few methods seek to integrate all three of these aspects into a single method and of those that do many are extensions to existing engineering techniques. This thesis, however proposes a new behavi

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11

Crawford, Alistair. "Bad Behaviour: The Prevention of Usability Problems Using GSE Models." Thesis, Griffith University, 2006. http://hdl.handle.net/10072/366051.

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The aim of Human Computer Interaction or HCI is to both understand and improve the quality of the users' experience with the systems and technology they interact with. Recent HCI research requirements have stated a need for a unified predictive approach to system design that consolidates system engineering, cognitive modelling, and design principles into a single 'total system approach.' At present, few methods seek to integrate all three of these aspects into a single method and of those that do many are extensions to existing engineering techniques. This thesis, however proposes a new behavi

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12

Colin, Elizabeth. "Architecture reconfigurable pour la numérisation du signal radio de récepteurs mobiles multistandards." Paris, ENST, 2003. http://www.theses.fr/2003ENST0040.

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L'explosion de la téléphonie cellulaire et des normes de communications mobiles de couverture réduite (Wide, Local, Personal Area Networks, WAN, LAN et PAN), motivent de nombreuses études avec des approches très différentes. C'est dans ce contexte que s'inscrit ce travail de thèse qui propose une architecture reconfigurable pour la numérisation du signal radio de récepteurs mobiles multistandards. La première phase du travail cherche à déterminer la chaîne la mieux adaptée à la réception de différentes normes. Les récepteurs à conversion directe sont particulièrement adaptés à cette applicatio

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13

Colin, Elizabeth. "Architecture reconfigurable pour la numérisation du signal radio de récepteurs mobiles multi-standards." Phd thesis, Télécom ParisTech, 2003. http://pastel.archives-ouvertes.fr/pastel-00000856.

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L'explosion de la téléphonie cellulaire et le déferlement de normes de communication mobiles de couverture réduite (Wide, Local, Personal Area Networks, WAN, LAN et PAN), motivent de nombreuses études avec des approches très différentes. C'est dans ce contexte que s'inscrit ce travail de thèse qui propose une architecture reconfigurable pour la numérisation du signal radio de récepteurs mobiles multistandards. De la transition progressive du GSM vers l'UMTS en Europe découle le besoin de terminaux bi-mode GSM/UMTS dans un futur proche. Pour cette raison nous avons appliqué cette étude à ces de

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14

NOBRE, ISABELA CUNHA MAIA. "ON THE PROTECTION OF FIXED SERVICE RECEIVERS FROM THE INTERFERENCE GENERATED BY NON-GSO SATELLITE SYSTEMS OPERATING IN THE 3.7-4.2 GHZ BAND." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=32037@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Neste trabalho, os limites atuais de densidade de fluxo de potência do Artigo 21 do Regulamento de Radiocomunicações da UIT para sistemas não-GEO operando na banda 3.7-4.2 GHz são analizados. Estes limtes visam proteger os receptores do Serviço Fixo Terrestre, operando na mesma faixa de frequência, das interferências produzidas por sistemas de satélites não geoestacionários. A análise foi motivada pela Resolução 157 [1] da Conferência Mundial de Radiocomunicações de 2015, que

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15

Neumanová, Radka. "Metodika využívání e-bankingu a elektronických katalogů." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2008. http://www.nusl.cz/ntk/nusl-221802.

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This diploma work deals with using e-banking and e-catalogues problems. First part of the diploma work describes e-banking development including actual forms of e-banking. Next part deals with connection between e-catalogues and e-banking. In the last part of the diploma work there is described concept of the procedure of using e-banking and e-catalogues and the practical ways of using the procedure.

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16

Butt, Pakeezah. "Regulatory capital, liquidity creation, bank characteristics and profitability: Evidence from developed and developing countries." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2022. https://ro.ecu.edu.au/theses/2515.

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The aim of this study is to examine the bidirectional relationship between regulatory capital and liquidity creation in a global setting comprising diverse bank-specific and country-level characteristics. This study utilises the theory of financial intermediation and investigates various channels through which regulatory capital and liquidity creation are interrelated. More specifically, this study examines how bank-level and country-specific characteristics interact with regulatory capital to determine liquidity creation, and vice versa for Asia-Pacific and European banks. This study uses a d

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17

Harries, James Osmar. "Pragmatic theory applied to Christian mission in Africa : with special reference to Luo responses to ‘bad’ in Gem, Kenya." Thesis, University of Birmingham, 2007. http://etheses.bham.ac.uk//id/eprint/15/.

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Linguistic research showing dependence on context in deriving language meaning discloses the integral linking of the Luo language with their departed ancestors and the upholding of customary laws. Meaning and impact being transformed in the process of translation from one context to another explains the severe limitations found in previous attempts at cross-cultural understanding between Western and Luo (African) peoples. Studying Luo people’s understanding of ‘bad’ in the light of the above reveals much that often remains invisible to Westerners. ‘Bad’ arises from the activities of ghosts act

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Carbonari, Filho Antonio. "O impacto do capital dos bancos na rentabilidade e risco no sistema financeiro brasileiro." Universidade Presbiteriana Mackenzie, 2015. http://tede.mackenzie.br/jspui/handle/tede/659.

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Made available in DSpace on 2016-03-15T19:26:27Z (GMT). No. of bitstreams: 1 ANTONIO CARBONARI FILHOprot.pdf: 7746403 bytes, checksum: 090ae54add5a18fe0bcdc981c3113846 (MD5) Previous issue date: 2015-08-05<br>Over the past few years, banks have always been present at the epicenter of the biggest financial crises. Adopting policies that reduce the occurrence of banking crises is important to ensure peace and security for its depositors and investors. Thus, policymakers adopted the capital as regulatory measure, which required banks greater control in relation to its risk assets. The capital a

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Afonso, Lutcy Menezes. "Correcting for attrition in panel data using inverse probability weighting : an application to the european bank system." Master's thesis, Instituto Superior de Economia e Gestão, 2015. http://hdl.handle.net/10400.5/8155.

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Mestrado em Econometria Aplicada e Previsão<br>Esta dissertação analiza técnicas de correção do efeito do enviesamento que pode ocorrer no caso dos dados utilizados apresentarem valores em falta. Tais técnicas serão aplicadas a um modelo económico para caracterização da margem líquida de juros (MLJ) bancária, utilizando dados provinientes 15 países que pertencem ao sistema bancário da União Europeia (UE15). As variáveis que caracterizam os bancos são observados entre de 2004 e 2010. E são escolhidas seguindo Valverde et al. (2007). Adicionalmente aos regressores são acrescentadas algumas vari

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Queiroz, Eduardo Martinelli Galvão de. "Algoritmo de alocação dinâmica de largura de faixa para redes de comunicação móvel celular." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/18/18155/tde-20062008-100444/.

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O crescente aumento da demanda de tráfego nas redes celulares vem aumentando a necessidade de uma melhor utilização dos recursos do sistema, já que sua expansão é custosa. Nas estações rádio base (ERB), a disponibilidade de largura de faixa de freqüências é limitada e desta maneira, em uma rede de comunicação móvel celular, o controle de admissão de chamadas exerce grande influência no desempenho do sistema, pois determina a utilização de banda das ERBs e se uma determinada quantidade de recursos (banda) será alocado ou não para uma determinada chamada. O desempenho da rede pode ser atrelado a

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Pinter, Julien. "Essays on two new central banking debates : central bank financial strength and monetary policy outcome : the instability of the transmission of monetary policy to deposit rates after the global financial crisis." Thesis, Paris 1, 2017. http://www.theses.fr/2017PA01E051.

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Cette thèse traite de deux nouveaux débats sur le central banking qui ont émergé après la crise financière de 2008: le débat sur les pertes financières aux bilans des banques centrales, et le débat sur le niveau élevé des taux bancaires par rapport aux taux de marché après la crise. Les deux premiers chapitres s’inscrivent dans le premier débat. Le lien entre la solidité financière des banques centrales et l’inflation est étudié empiriquement dans le premier chapitre, en se basant sur un large panel de 82 pays. Théoriquement, ce lien est potentiellement présent lorsque le gouvernement ne souti

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Silva, Junior Walter Gomes da. "Análise comparativa e fatores determinantes do spread bancário nos principais mercados da América Latina." reponame:Repositório Institucional do FGV, 2018. http://hdl.handle.net/10438/24634.

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Submitted by Walter Gomes da Silva Junior (waltergomesjr@gmail.com) on 2018-08-28T19:07:10Z No. of bitstreams: 1 Spread Bancário América Latina - Walter Gomes.pdf: 1440714 bytes, checksum: 08cd6a32fa157e1bfba38dc04bc018a9 (MD5)<br>Approved for entry into archive by Joana Martorini (joana.martorini@fgv.br) on 2018-08-28T19:11:14Z (GMT) No. of bitstreams: 1 Spread Bancário América Latina - Walter Gomes.pdf: 1440714 bytes, checksum: 08cd6a32fa157e1bfba38dc04bc018a9 (MD5)<br>Approved for entry into archive by Isabele Garcia (isabele.garcia@fgv.br) on 2018-08-28T20:59:33Z (GMT) No. of bitstreams

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Mapoka, Trust Tshepo. "Location based authenticated multi-services group key management for cyber security in high speed broadband wireless multicast communications : multi-service group key management scheme with location based handover authentication for multi-handoffs participating in multi-group service subscriptions, its performance evaluation and security correctness in high speed broadband wireless multicast communications." Thesis, University of Bradford, 2015. http://hdl.handle.net/10454/14468.

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Secure information exchanges over cyberspace is on the increase due to the convergence of wireless and mobile access technologies in all businesses. Accordingly, with the proliferation of diverse multicast group service subscriptions that are possible to co-exist within a single broadband network, there is also huge demand by the mobile subscribers to ubiquitously access these services over high speed broadband using their portable devices. Likewise, the Network Providers (NPs) invest hugely in infrastructure deployment to disseminate these services efficiently and concomitantly. Therefore, cy

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Bachhav, Pramod. "Explicit memory inclusion for efficient artificial bandwidth extension." Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS492.

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La plupart des algorithmes ABE exploitent les informations contextuelles ou la mémoire capturée via l'utilisation de caractéristiques statiques ou dynamiques extraites de trames de parole voisines. L'utilisation de la mémoire entraîne des caractéristiques dimensionnelles plus élevées et une complexité informatique accrue. Lorsque les informations provenant de trames de prévisualisation sont également utilisées, la latence augmente également. Les travaux antérieurs montrent l'avantage pour ABE d'exploiter la mémoire sous la forme d'entités dynamiques avec un modèle de régression standard. Même

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Wu, Chia-Hao, and 吳家豪. "Antenna Design for RFID and GSM Band Applications." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/45305542420256754815.

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碩士<br>國立臺灣海洋大學<br>電機工程學系<br>96<br>In this thesis we have proposed a design which can be used as RFID reader system. The design is based on the integration of a network feed line onto a planar antenna. The network was constructed of passive components and when combining with the planer antenna demonstrated improved operational characteristics (CP axial ratio bandwidth of the circularly polarized antenna and cross-polarization) of the planar antenna. By constructing slots on a planar antenna and combining with the 90 degree phase shift character of a Wilkinson power divider, a circularly polari

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Kuan, Tseng Jung, and 曾榮冠. "A Direct Conversion Transceiver for Dual-Band GSM Design." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/41233697877695774887.

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碩士<br>淡江大學<br>電機工程學系碩士在職專班<br>92<br>In this thesis, dual band (900/1800MHz) GSM radio module is implemented for complying with ETSI standard. The radio module employs direct conversion structure in receiver and offset phase lock loop (PLL) in transmitter, which consists of the zero-IF transceiver AD6523, multi-band synthesizer AD6524, low noise amplifier (LNA), voltage control oscillator (VCO), power amplifier (PA), transmit-receive switch, power control, balun, and regulator. The design start with link budget calculation to define circuit complied with ETSI specifications. When transmitting s

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Lin, Xin-Liang, and 林信良. "The Design and Evaluation of High Performance RFIC in GSM Band." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/58370183028176688412.

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碩士<br>國立高雄第一科技大學<br>電腦與通訊工程所<br>92<br>In transceiver, the RF front end is the most remarkable part in system, which decides channel utilization, distance of transmission, communication quality and receiver’s sensitivity. Therefore, the high performance of RF module will affect total solutions. In this thesis, two RF integrated circuits (RFIC) have been designed using a 0.5-mµCMOS technology and 0.35-BiCMOS technology, and simulated by ADS (Advance Design System). The compact RFIC is composed of LNA, Mixer [1]-[2]and input/output matching impedance based on the optimum design for the model indu

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Lee, Wen-yi, and 李文毅. "Design and Implementation Dual-band Coupler for GSM/ISM Amplifier Application." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/08326549097765662801.

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碩士<br>逢甲大學<br>資訊電機工程碩士在職專班<br>96<br>This thesis presents two kinds of miniature technology to reduce the size of traditional type dual-band branch-line coupler and to match one or more amplifier with its coupler characteristic to complete the dual band balance amplifier design and implementation for GSM/ISM application. Firstly SIR structure will reduce the area of traditional type dual-band branch line form 100% to 49%.Secondly T-shape and SIR structures the area of traditional type dual-band branch line will reduce to 28%. Especially , T-shape and SIR structure not only have the effect of co

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Wu, Jing-yi, and 吳進義. "Design of Planar Dual-band Hand-held Antennas For GSM Systems." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/89416152234150724394.

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碩士<br>國立臺灣大學<br>電機工程學系研究所<br>86<br>As far as modern personal communication is concerned, a nifty, lightweight an d multi-functioned mobile phone is always competitive. In this work, we propos ed and carefully examined a miniaturized dual band planar antenna which is des igned to be operated at both 900 and 1800 MHz for mobile phones. For the desig n purpose, a simple and easily understood design procedure is also proposed in contrast to those of the reported inverted-F antennas. Specifically, a dual b an

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Chen, Bin-yi, and 陳秉毅. "Study of Power Amplifier Module for GSM/DCS Quad-Band Cell Phone." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/71594846951855070711.

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碩士<br>義守大學<br>電機工程學系<br>101<br>In this thesis a compact and cost effective power amplifier (PA) module for GSM/DCS Quad-Band cell phone was designed and fabricated. This module combines three various chips. One works as a quad-band PA for GSM/DCS system and was fabricated on GaAs HBT substrate. Another one is a SP7T switch which is used to separate the paths of signals such as transmission and receiving signals for GSM and DCS, respectively. The SP7T switch was fabricated on GaAs pHEMT substrate. The third chip is mixed logic controller IC which is fabricated with CMOS process. The controller

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Chang, Chia-wei, and 張家瑋. "Design of GSM Dual-Band Pass Microstrip Filters Using Open-Loop Resonators." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/70187977262428358090.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>97<br>To produce a dual-band pass microstrip filter, a circuit designer must understand determine the location that suppression oscillation frequencies of resonators and takes place and the coupling structure of resonators, and next have to overcomesolve the match problem of dual bands in the input and output ends. In order to solve the match problem, an effective design method using a quarter-wavelength impedance converter and a correlation formula of external quality factor is proposed in this study. The uniform impedance square resonator is used to design the d

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Hsia, Tung-Liang, and 夏同良. "Multi-Band Antenna Design for Mobile Phone on LTE/GSM/WLAN Operations." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/48035405970736956256.

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碩士<br>國立高雄大學<br>電機工程學系碩士班<br>103<br>This study direction focuses on multi-band antenna used for mobile phone. The main structure of the antenna is planar monopole antenna with parasitic elements。 Proposed design antenna is operating at LTE 700/900/1800/2300/2500 (698~787 , 900 ,1800 , 2300 ~ 2400, 2500 ~ 2690 MHz), GSM 850/900 (824 ~ 960 MHz), DCS 1800 (17100 ~ 1880 MHz), PCS 1900 (1850 ~ 1990 MHz), UMTS 2100 (1920 ~ 2170 MHz), WLAN 2400 (2400 ~ 2480MHz) and Bluetooth (2400~2483.5MHz)。 The planar monopole antenna coupled with parasitic elements excites two fundamental modes. By adjusting the p

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He, Cheng-Wei, and 何丞偉. "A DUAL-BAND CMOS RF FRONT-END DESIGN FOR GSM AND WCDMA APPLICATIONS." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/18140730991076278060.

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碩士<br>大同大學<br>電機工程研究所<br>90<br>This thesis presents a highly integrated dual-band RF front-end for GSM 900 MHz and WCDMA 2 GHz systems. The front-end is designed to be used in a direct-conversion architecture with 0.25 um CMOS processes. The direct-conversion receiver includes two single-ended low noise amplifiers (LNA), a single-ended-to-differential converter, and quadrature mixers. The front-end can use the same devices in the signal path except the LNA input transistors. The LNA in GSM mode has gain 25 dB, NF (Noise Figure) 2.8 dB, input third order intercept point(IIP3) -14 dBm

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Hwang, Hwong-Wen, and 黃鴻文. "Design and Performance Evaluation for Phase Locked Loops with Multi-channel in GSM band." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/64477962770776605571.

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碩士<br>國立高雄第一科技大學<br>電腦與通訊工程所<br>91<br>This thesis conducts a high performance of Phase Locked Loops (PLLs) in GSM band. It is assumed that the modulated technology to send data with high frequency but it can not transmit as long distance in wireless environment and the demodulation technology in receiver, is restored original data from RF front-end to baseband. From the wireless system, the channel band limited, we should be to solve the band limited by the multiplex technology only. In the wireless communication, we must have a high stable local oscillator as show in conventional super hete

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LIN, CHUN-CHENG, and 林春成. "Planar Wide-Band Unsymmetry Semicircle Antenna for GSM 1800/UMTS 2100 4G LTE Applications." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/69597512194118515783.

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Chang, Yu-Fang, and 張毓芳. "Design and Implementation of Miniaturized Dual-band Branch Line Coupler for WiMAX and GSM Application." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/31418558367174449649.

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碩士<br>逢甲大學<br>通訊工程所<br>97<br>In this thesis, the miniaturized branch-line coupler with dual-band for WiMAX and GSM application will be designed and implemented. It must have the characteristics of compact size and dual-band. In order to accord with the characteristics of dual-band, wide-band and small size, we propose several kinds of reducing size method in this research, and will apply it to the dual-band coupler. Furthermore, without any implementation of lumped elements, bonding wires, and via holes is proposed. The requirement of bandwidth is a big problem. We add capacitance to increase

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You, Jia-Hui, and 尤嘉暉. "GSM(1.8GHz)/WLAN(2.4GHz) Dual-Band Low-Voltage LNA Design With A Switchable Inductive Load." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/14945426177111785503.

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碩士<br>國立成功大學<br>電機工程學系碩博士班<br>96<br>Recently years, in the century of speedy development wireless communication, this tendency that the mobile phone have communication and network is more and more important. Developing SOP (System on Package) and SOC (System on chip) is the mainstream. However, the receiver that having GSM and WLAN standards has been height concerned. For this receiver, if using a direct conversion structure, we need the low noise amplifier that operates in different frequency, amplify the signal of GSM and WLAN form antenna respectively. The direct way is to integrate two LNA

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Chen, Po-Heng, and 陳柏亨. "A Multi-band Frequency Synthesizer for GSM/DCS/WIMAX/WLAN Applications with Ripple-free Circuit." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/83308204906103044718.

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碩士<br>國立交通大學<br>電子研究所<br>98<br>A fully integrated multi-band frequency synthesizer implemented in CMOS 0.18μm process with the ripple-free circuit in a single loop is presented in this thesis. The synthesizer is designed for GSM/DCS/WIMAX/WLAN (802.11a/b/g) systems applying to IQ phase based transceivers. The proposed synthesizer with ripple-free circuit can reduce the amplitude of control voltage ripple to 3.45 μ V in locking time of 13.5μs. The synthesizer performs the suppression of 31.4dB in the power spectrum of reference-spur and the peak-to-peak jitter with 74% improvement compared to c

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Chang, Chi-Yu, and 張啟宇. "Design of A Triple-band Antenna Switch Module for GSM Handset Application with LTCC Technology." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/08428208020882196101.

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碩士<br>國立交通大學<br>電機資訊學院碩士在職專班<br>93<br>A procedure is design of an antenna switch module (ASM) with LTCC technology has been applied in GSM handset. By means of the design, the handset contributed not only to reduce the number of components, costs, and product’s weight, but also simplify the system assembly. A more detail research of antenna switch module (ASM) has been described the system is consists of diplexer, RF switches, and low pass filters. In the system, a simple’s diplexer design method has been applied, the effect factors of the transmitter loop insertion loss in both the SPDT and S

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See, Chan H., Raed A. Abd-Alhameed, Achimugu A. Atojoko, Neil J. McEwan, and Peter S. Excell. "Link Budget Maximization for a Mobile-Band Subsurface Wireless Sensor in Challenging Water Utility Environments." 2017. http://hdl.handle.net/10454/12141.

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yes<br>A subsurface chamber transceiver system and associated propagation channel link budget considerations for an underground wireless sensor system (UWSS) are presented: the application was a sewerage system for a water utility company. The UWSS operates over the GSM850/900, GSM1800/1900 and UMTS bands in order to operate with the standard public mobile phone system. A novel antenna was developed to minimize path loss from the underground location: a folded loop type, which is small enough to fit conveniently inside a utility manhole access chamber while giving adequate signal strength to l

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Chuang, Yu-Chou, and 莊彧宙. "ANTENNA COVERING GSM/WLANAND GPS BANDS." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/74557488103834876560.

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碩士<br>大同大學<br>通訊工程研究所<br>97<br>In this thesis, design and implementation of a U-shaped strip-slot antenna covering GSM/WLAN/Bluetooth and GPS bands are proposed. The total antenna size is 100 x 40 mm. It is modified from a symmetrical self-complementary strip-slot structure. However, one leg of the U-shaped slot is extended to the rim of the printed circuit board. It is investigated that this extension makes the antenna also be well-matched at GPS band. Without this extension, the antenna cannot work at this band.

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Fan, Yingxuan. "Mechanismus dopadů záporných úrokových sazeb na čistou úrokovou marži bank." Master's thesis, 2021. http://www.nusl.cz/ntk/nusl-446825.

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Net interest margin (NIM) is an important indicator of a bank's operational efficiency. Based on the balance sheet data of 189 major listed banks in Europe from 2010 to 2019, this thesis studies the bank's NIM mechanism in a negative interest rate environment. This thesis focuses on the system GMM method and the results show that the policy interest rate is positively related to NIM in the long run and negatively related in the short run, but the relationship between the two is not significant in the short run. Moreover, in a negative interest rate environment, bank NIM's sensitivity to policy

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Bečvaříková, Vendula. "Řízení neúrokového příjmu bank v prostředí nízkých úrokových sazeb." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-345244.

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The significant change of the banking business models is easily observable in the current banking industry. Banks are forced to find additional source of income besides the one from traditional activities and thus the non-interest income is growing in importance. One of the reasons behind is that the banks need to recover from severe impacts of financial crisis in 2008-2010 and they want to adapt to the environment of low interest rates which has been occurring in the market since 2011. In this thesis, we analyze the presence of direct effect of non-interest income (proxied by fee income) on b

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Fišerová, Tereza. "Foreign-Owned Banks and Host Economies." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-325055.

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In the past two decades, significant changes have been shaping and transforming the banking sectors worldwide. Among these trends we find an intensive surge in foreign bank ownership which is especially remarkable in the countries of the Central, Eastern and South-Eastern European region. Using the sample of 17 countries and filtering out more than 140 domestically-operating foreign-owned banks, we examine the determinants of their performance in relation to host country conditions and home country banking sector performance over the period of seven years between 2005 and 2011. Due to the topi

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Proença, Catarina Alexandra Neves. "Essays On The Eurozone Banking Performance: Profitability, Risk, Remuneration And Efficiency." Doctoral thesis, 2021. http://hdl.handle.net/10316/96397.

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Tese no âmbito do Doutoramento em Gestão de Empresas, orientada pelo Professor Doutor Mário António Gomes Augusto e pelo Professor Doutor José Maria Ruas Murteira e apresentada à Faculdade de Economia da Universidade de Coimbra.<br>The present dissertation addresses banking performance from several different perspectives, a general purpose that, to a large extent, was motivated by the various factors that led to the 2007/2008 global financial crisis. In particular, the low effectiveness of directors’ boards, remuneration policies with high-risk components, and earnings management can be consid

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Jvaridze, Tinatin. "Transmisní mechanismus monetární politiky-úvěrový kanál a struktura bankovního trhu. Studie pro Gruzii, Ázerbájdžán a Arménii." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-406229.

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In the thesis, we examine the bank lending channel and the effect of banking market structure on the transmission of monetary policy in Georgia, Armenia, and Azerbaijan. We employ bank-level data for the period of 2011-2017 to detect if banks with different characteristics react differently to monetary policy shocks. Banking market structure is proxied by three measures-CR5, HHI, and Lerner Index. We estimate two types of models: dynamic (with system GMM) and static (with FE) models. We also consider the effect of dollarization on bank loan supply as well as on monetary policy. We do not find

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Vozková, Karolína. "Bankovní poplatky - jejich determinanty a vliv na ziskovost a rizikovost bank." Doctoral thesis, 2020. http://www.nusl.cz/ntk/nusl-435799.

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This thesis consists of five essays dealing with the fee and commission income in European banks from the macro, sector and bank level perspectives. This topic is of high relevance since fee income represents the largest part of the non-interest income of EU banks. The first part of the thesis deals with banks in general terms, while the second part is focused solely on cooperative banks, which represent approximately 20% of the EU banking sector. We compare the magnitude of the bank fee income across EU countries and study its determinants and impacts on banks' performance. The first essay co

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Pretorius, Johann Christiaan. "Composite plaster cement-based electromagnetic wave absorber." Diss., 2013. http://hdl.handle.net/2263/33352.

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The electromagnetic wave absorption characteristics of composite cement-based building material have attracted much interest in recent times. Researchers have mainly focused on the 2 GHz to 12 GHz frequency range. Mobile and wireless communication systems use frequencies from 800 MHz upwards. The determination of characteristics such as reflection loss, absorption, attenuation and shielding effectiveness are crucial in the evaluation and development of these materials for the building industry. Absorption is an indication of how much of the EMW energy enters the material. Attenuation ind

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Vildová, Romana. "Jak konkurence mezi bankami ovlivňuje finanční stabilitu." Master's thesis, 2017. http://www.nusl.cz/ntk/nusl-267729.

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How Bank Competition Influences Financial Stability Abstract This paper investigates the link between financial stability and bank competition by means of the Arellano & Bond (1991) GMM model using annual panel data over the period 2000 - 2014 for 205 countries. Our data source is a new, richer and updated dataset The Global Financial Development Database available at World Bank. Due to the specifics of this dataset we are able to use new combinations of measures of financial stability and of bank competition and to study their relationship in greater depth. We find a positive link between fin

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Růžičková, Karolína. "Bankovní poplatky v ČR a EU." Master's thesis, 2014. http://www.nusl.cz/ntk/nusl-337379.

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This thesis deals with both theoretical and practical aspects of banking fee and commission income in the European Union. Since fee income represents the largest part of non-interest income earned by banks, it remains a major challenge for bank management to set and maintain an appropriate fee policy. Nevertheless, solving for the optimal fee structure has not yet been accomplished either on a theoretical level, or in actual practice. In the thesis, we analyse fee income in EU banking sectors. Our results show that the Czech banking sector was not abnormally dependent on fee income compared to

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