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Literatura académica sobre el tema "Antennas"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de julio de 2025

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Artículos de revistas sobre el tema "Antennas"

Ghodake, Asha, and Balaji Hogade. "ISM Band 2.4 GHz Wearable Textile Antenna for Glucose Level Monitoring." International Journal of Electrical and Electronics Research 11, no. 1 (2023): 39–43. http://dx.doi.org/10.37391/ijeer.110106.

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Wearable technology has recently attracted much interest for various uses. An essential component of the wearable system is the wearable antenna. Textile and non-textile materials have both been used to create wearable antennas. Textile antennas are very useful and widely used nowadays, particularly in body-worn applications monitoring health parameters. Fabricated using microstrip technology, textile antennas have various benefits, including small size, lightweight, simple fabrication, and ease of wear. In this study, a microstrip antenna is created utilizing a substrate made of jeans. It wor

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Hirose, Kazuhide, Mitsuki Hirose, Shintaro Mita, Takumi Fujita, and Hisamatsu Nakano. "Advantages of Plate Antennas over Loop Antennas for Circular Polarization—Its Application in Array Antenna with a Simplified Feed." Electronics 13, no. 19 (2024): 3896. http://dx.doi.org/10.3390/electronics13193896.

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We analyze square antennas with one and quasi-two sources to reveal the relationship between loop and plate antennas. First, using the moment method, one-source antennas with corner truncation are investigated versus antenna height above the ground plane. As the height increases, the CP wave bandwidth of the plate antenna increases 17% for a 3 dB axial ratio criterion, whereas the loop antenna’s bandwidth remains less than 3%. Next, we study quasi-two-source antennas without corner truncation versus antenna height. The plate antenna’s bandwidth is found to reach 30%, which is wider than that o

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Li, Huanxiao, Shengnan Lyu, Xiaofei Ma, et al. "Influences of Errors in Modular-Assembled Antenna on Radiation Characteristics." Sensors 25, no. 14 (2025): 4244. https://doi.org/10.3390/s25144244.

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Modular-assembled antennas represent an effective solution for the challenge of building super-large antennas in orbit. To investigate the impact of errors in modular-assembled antennas on their radiation characteristics, this study proposes definitions for these errors and presents methods for addressing them during the engineering design phase. The sources of errors in the modular antenna units are identified, and formulas for the error contributions of each module are derived. Based on this error analysis, a relationship between the errors of individual modules and the overall assembled ant

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Fu, Xiaoyi, Yuntao Hua, Wenlai Ma, Hutao Cui, and Yang Zhao. "Thermal field simulation and material parameter optimization for spaceborne annular truss antennas." Journal of Physics: Conference Series 2691, no. 1 (2024): 012054. http://dx.doi.org/10.1088/1742-6596/2691/1/012054.

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Abstract The operational efficacy of large spaceborne annular truss antennas in orbit is significantly influenced by solar irradiation and alternating Earth shadow. This antenna system periodically encounters diverse extreme environments that impact the precision of the antenna surface performance. Consequently, this study presents an optimized thermal control design and conducts temperature field simulation calculations for such antennas. Initial efforts are directed toward analyzing the variables influencing the antenna structure’s temperature, with specific attention paid to the distinctive

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Saeidi, Tale, Idris Ismail, Wong Peng Wen, Adam R. H. Alhawari, and Ahmad Mohammadi. "Ultra-Wideband Antennas for Wireless Communication Applications." International Journal of Antennas and Propagation 2019 (April 22, 2019): 1–25. http://dx.doi.org/10.1155/2019/7918765.

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A review paper concerning wide-band and ultra-wideband (UWB) antennas used for wireless communication purposes in terms of the materials as well as a numerical analysis is presented. These antennas which are taken into account are listed as wide-band microstrip antenna, wide-band monopole antenna over a plate, wide-slot UWB antenna, stacked patch UWB antenna, taper slot (TSA) UWB antenna, metamaterial (MTM) structure UWB antennas, elliptical printed monopole UWB antenna, and flexible wearable UWB antenna. The antennas’ performance is compared based on their size and how they can be applicable

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Yeom, Insu, Junghan Choi, Sung-su Kwoun, Byungje Lee, and Changwon Jung. "Analysis of RF Front-End Performance of Reconfigurable Antennas with RF Switches in the Far Field." International Journal of Antennas and Propagation 2014 (2014): 1–14. http://dx.doi.org/10.1155/2014/385730.

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The RF front-end performances in the far-field condition of reconfigurable antennas employing two commonly used RF switching devices (PIN diodes and RF-MEMS switches) were compared. Two types of antennas (monopole and slot) representing general direct/coupled feed types were used for the reconfigurable antennas to compare the excited RF power to the RF switches by the reconfigurable antenna types. For the switching operation of the antennas, a biasing circuit was designed and embedded in the same antenna board, which included a battery to emphasize the antenna’s adaptability to mobile devices.

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Afroz, S., A. A. Al-Hadi, S. N. Azemi, et al. "On Thin Flexible Wideband Printed Antenna for Sub-6 GHz Wearable Applications." Journal of Physics: Conference Series 2922, no. 1 (2024): 012015. https://doi.org/10.1088/1742-6596/2922/1/012015.

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Abstract Body Area Networks (BANs) have gained significant popularity in recent years, leading to a substantial rise in the demand for wearable antennas. Printed antenna on the flexible substrate can be an excellent choice for wearable since it can be used as a smart garment (i.e. shirt, T-shirt, or jacket). Unlike rigid antennas, the fabrication and measurement procedures for wearable antennas are particularly critical and sensitive. In BANs, the presence of the human body presents another significant challenge such as structural deformation (like bending). This paper has provided an overview

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Gargi, C., J. S. Kennedy, and T. D. Jayabal. "Morphometrics and distribution of antennal sensillae of both sexes of Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae)." Journal of Applied and Natural Science 14, SI (2022): 41–48. http://dx.doi.org/10.31018/jans.v14isi.3563.

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Fall Armyworm, Spodoptera frugiperda, is a devastating invasive pest persisting as a menace hampering the progress of Indian agriculture. The morphometrics and distribution of antennal sensilla of both sexes of S. frugiperda were investigated in the study. The antenna was filiform for both sexes and was composed of scape, pedicel and flagellum. Male antennas had more subsegments (65-71) in the flagellum than female (56-70) antennas. Male and female S. frugiperda antennae possessed eight types of sensilla: sensilla trichoidea, sensilla chaetica, sensilla coeloconica, sensilla styloconica, sensi

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Ramalakshmi, Gudla, and P. Mallikarjuna Rao. "A Novel Metamaterial Inspired 2^nd Iteration Koch Fractal Antenna for Wi-Fi, WLAN, C band and X band Wireless Communications." Journal of Physics: Conference Series 2062, no. 1 (2021): 012004. http://dx.doi.org/10.1088/1742-6596/2062/1/012004.

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Abstract The rapid advancements in wireless technology desires compact, miniaturized, multiband and ultra wideband antennas. Fractal antennas have been proved as a source for fulfilling these demands. In this paper a 2nd order Koch fractal antenna of size 29.6 × 35.7mm2 designed on FR4-epoxy substrate material of dielectric constant (ɛr) 4.4 with a height of 1.6mm. This antenna is named as ANTENNA-1. To increase this antenna’s performance a meta material unit cell has been placed on the ground plane to serve multi band applications and is named as ANTENNA-2, which is the proposed antenna in th

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Sedghi, Tohid, Mahdi Jalali, and Tohid Aribi. "Fabrication of CPW-Fed Fractal Antenna for UWB Applications with Omni-Directional Patterns." Scientific World Journal 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/391602.

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Novel and compact CPW-fed antennas are proposed comprised of a fractal patch and modified ground-plane. The ground-plane is truncated at the center and includes dielectric notches at its side to enhance the antenna’s impedance bandwidth. The dimensions of the notches effectively control the upper and lower band edges of the antenna. The optimized antenna operates across 2.95–12.81 GHz forS11≤-10 dB. Omnidirectional radiation pattern is achieved over the full UWB frequency range. The miniaturized antenna has a total size of14×18×1 mm3. The characteristics of the proposed antenna are suitable fo

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Tesis sobre el tema "Antennas"

Rouibah, Ammar. "Un modèle analytique pour l'antenne microruban rectangulaire." Doctoral thesis, Universite Libre de Bruxelles, 2013. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209359.

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Les antennes microruban et en particulier l’antenne microruban rectangulaire sont étudiées et utilisées depuis plusieurs dizaines d’années.Comme pour toute antenne, il est important de disposer pour ces antennes d’un modèle analytique qui permette une bonne compréhension du fonctionnement et fournisse de manière rapide des valeurs pour les principaux paramètres (fréquence de travail, impédance, gain, rendement et bande passante).Au fil des ans, deux modèles, chacun comprenant de nombreuses variantes, ont été développés :le modèle dit « de la ligne de transmission » et le modèle dit « de

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Sonkki, M. (Marko). "Wideband and multi-element antennas for mobile applications." Doctoral thesis, Oulun yliopisto, 2013. http://urn.fi/urn:isbn:9789526201085.

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Abstract This dissertation presents wideband and multi-element antennas for mobile applications. It is divided into the following main parts: modal theory, wideband antennas, multi-element antennas, and wideband multi-element antennas. The radiating fields are first studied in terms of spherical scalar and vector modes, and it is shown how these modes correlate with the characteristic current modes on a planar mobile ground plane. The theory part shows how it is possible to excite the same modes on a conventional sphere and a rectangular planar mobile ground plane. The theory refers to the nov

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Nikolayev, Denys. "Miniature antennas for biomedical applications." Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1S149.

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La télémétrie biomédicale et l’interfaçage neuronal à base de dispositifs miniatures et autonomes sans fil constituent de nouvelles applications en émergence. Elles visent à répondre à de nombreux enjeux y compris dans les domaines de la santé, du sport et bien être, ou encore de la sécurité au travail et de la défense. Parmi les applications typiques de biotélémétrie, nous pouvons citer le monitoring de certains paramètres physiologiques : température corporelle, pression artérielle, rythme cardiaque, taux de glucose et d’anticorps, détection d’agents chimiques, etc. En ce qui concerne l’inte

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Trinh, Le-Huy. "Antennes reconfigurables pour les applications mobiles et réseaux sans fil." Thesis, Nice, 2015. http://www.theses.fr/2015NICE4047/document.

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Au cours de ces dernières années, les technologies de télécommunication ont fait d'énormes progrès, notamment dans les communications mobiles et les réseaux de capteurs sans fil (WSN). Pour répondre à l’augmentation de la capacité de transmission et à l’amélioration de la qualité des canaux de communications mobiles, l’élargissement de la bande de fonctionnement est nécessaire par l'utilisation d'antennes reconfigurables en fréquence. En outre, dans les applications WSN, afin de réduire les collisions, d’augmenter la distance de communication et d'optimiser la consommation, l’utilisation d’ant

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Kabalan, Aladdin. "Miniaturisation et modélisation d’antennes monopoles larges bandes utilisant des matériaux magnéto-diélectriques en bande VHF." Thesis, Rennes 1, 2019. http://www.theses.fr/2019REN1S041/document.

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Les avions comportent plusieurs systèmes de navigation et de communication nécessitent des antennes VHF large bande. Réduire la taille de ses antennes est un enjeu majeur tout en gardant des bonnes performances. Cette thèse propose des nouvelles configurations d'antennes à profil bas utilisant des nouveaux matériaux nanocomposites non conducteurs constitués de nanoparticules magnétiques développés au Lab-STICC. Un monopole planaire large bande a été développé et optimisé avec un taux de miniaturisation de 60% grâce à l'utilisation d'un matériau magnéto-diélectrique de forte perméabilité et fai

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Shahpari, Morteza. "Fundamental Limitations of Small Antennas." Thesis, Griffith University, 2015. http://hdl.handle.net/10072/365747.

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The physical size and material properties of antennas are major limiting factors of the antennas performance. These limitations are usually manifested through parameters such as bandwidth, quality factor and efficiency. The presented research examines these fundamental limitations with specific focus on electrically small antennas, and a new bound for antenna efficiency is developed. Thesis (PhD Doctorate) Doctor of Philosophy (PhD) Griffith School of Engineering Science, Environment, Engineering and Technology Full Text

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Gorla, Hemachandra Reddy reddy. "MINIATUIRIZED ULTRA-WIDEBAND ANTENNAS FOR WIRELESS COMMUNICATIONS." OpenSIUC, 2021. https://opensiuc.lib.siu.edu/dissertations/1905.

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Wireless communication is part of our daily life in several applications, such as cell phones, wireless printers, sensors, etc. Each wireless device requires at least one antenna to communicate with other devices. In 2002, Federal Communications Commission (FCC) assigned a frequency spectrum from 3.1 GHz to 10.6 GHz for ultra-wideband communications. Several narrowband antennas require to cover the entire range. Unlike narrowband antennas, ultra-wideband antennas need to cover the wide frequency band. This research mainly focuses on physically small antenna designs. The first antenna discu

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Sousa, Jonas Rodrigo da Silva. "Estudo de antenas para comunicação na faixa de subterahertz." Universidade Federal Rural do Semi-Árido, 2016. http://bdtd.ufersa.edu.br:80/tede/handle/tede/766.

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Submitted by Lara Oliveira (lara@ufersa.edu.br) on 2017-07-14T18:14:07Z No. of bitstreams: 1 JonasRSS_DISSERT.pdf: 2555775 bytes, checksum: 1cffc3792b8fe12b4067e7bc74ee127d (MD5) Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2017-07-18T15:08:15Z (GMT) No. of bitstreams: 1 JonasRSS_DISSERT.pdf: 2555775 bytes, checksum: 1cffc3792b8fe12b4067e7bc74ee127d (MD5) Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2017-07-18T15:11:33Z (GMT) No. of bitstreams: 1 JonasRSS_DISSERT.pdf: 2555775 bytes, checksum: 1cffc3792b8fe12b40

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Martinis, Mario. "Développement et caractérisation de métamatériaux pour application en cavité : application à la conception d'antennes compactes." Thesis, Rennes 1, 2014. http://www.theses.fr/2014REN1S107/document.

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Cette thèse présente de nouveaux développements pour de petites antennes en cavité. L'objectif principal de la thèse est l'analyse de la performance de la bande passante de ces antennes pour des tailles d'ouverture qui sont petites par rapport à la longueur d'onde en espace libre. Des cavités de formes rectangulaires et circulaires intégrées dans un plan de masse infini et dans des plans de masse de dimensions latérales finies sont examinées en détail. Jusqu'à présent, dans la littérature, le choix pour ces antennes en cavités portait sur des antennes imprimées microruban (patch). L'objet de l

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Li, Hui. "Decoupling and Evaluation of Multiple Antenna Systems in Compact MIMO Terminals." Doctoral thesis, KTH, Elektroteknisk teori och konstruktion, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-96239.

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Research on multiple antenna systems has been a hot topic in recent years due to the demands for higher transmission rate and more reliable link in rich scattering environment in wireless communications. Using multiple antennas at both the transmitter side and the receiver side increases the channel capacity without additional frequency spectrum and transmitted power. However, due to the limited space at the size-limited terminal devices, the most critical problem in designing multiple antennas is the severe mutual coupling among them. The aim of this thesis is to provide compact, decoupled an

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Libros sobre el tema "Antennas"

Company, Watkins-Johnson, ed. Antennas and antenna systems. Watkins-Johnson Co., 1990.

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Blake, Lamont V. Antennas. 2nd ed. Munro Pub. Co., 1991.

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Fang, D. G. Antenna theory and microstrip antennas. Taylor & Francis, 2010.

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Fang, D. G. Antenna theory and microstrip antennas. CRC Press/Taylor & Francis, 2010.

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W, Long Maurice, ed. Antennas: Fundamentals, design, measurement. SciTech Pub., 2009.

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Kraus, John D. Antennas. 2nd ed. McGraw-Hill, 1988.

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Kraus, John Daniel. Antennas. 2nd ed. McGraw-Hill, 1988.

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Kraus, John D. Antennas. 2nd ed. McGraw-Hill, 1989.

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M, Weiner Melvin, ed. Adaptive antennas and receivers. Taylor & Francis, 2005.

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ESA, Workshop on Mechanical Technology for Antennas (2nd 1986 Noordwijk Netherlands). Second ESA Workshop on Mechanical Technology for Antennas: Proceedings of a workshop held at ESTEC, Noordwijk, the Netherlands, 20-22 May 1986. European Space Agency, 1986.

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Capítulos de libros sobre el tema "Antennas"

Keller, Reto B. "Antennas." In Design for Electromagnetic Compatibility--In a Nutshell. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-14186-7_9.

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AbstractThis chapter is a brief introduction to antennas and electromagnetic radiation, focusing on antennas for EMC tests. We skip the math intense part around Maxwell’s Equations.The formulas and statements in this chapter apply to the far-field (not the near-field), free-space, matched impedances (of antennas and receiver/transmitter equipment), and matched polarization (of the electromagnetic waves and the antenna polarization).

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Groth, Mateusz, Mateusz Rzymowski, Krzysztof Nyka, and Lukasz Kulas. "Reconfigurable Antennas for Trustable Things." In Intelligent Secure Trustable Things. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-54049-3_9.

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AbstractIn modern applications, the Internet of Things plays a significant role in increasing the productivity, effectiveness or safety and security of people and assets. Additionally, the reliability of Internet of Things components is crucial from the application point of view, where a resilient and low-latency network is needed. This can be achieved by utilizing reconfigurable antennas to enhance the capabilities of the wireless sensor network (WSN). Additionally, reconfigurable antennas can provide extended functionalities to the Internet of Things. One such aspect of wireless sensing is l

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Levin, Boris. "Impedance and Complementary Antennas." In Antennas. CRC Press, 2024. http://dx.doi.org/10.1201/9781003449065-2.

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Levin, Boris. "Antenna Analysis Based on Long Lines' Theory." In Antennas. CRC Press, 2024. http://dx.doi.org/10.1201/9781003449065-3.

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Levin, Boris. "The Problems of Analysis." In Antennas. CRC Press, 2024. http://dx.doi.org/10.1201/9781003449065-5.

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Levin, Boris. "Integral Equations for Radiators' Currents." In Antennas. CRC Press, 2024. http://dx.doi.org/10.1201/9781003449065-4.

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Levin, Boris. "Synthesis Problems." In Antennas. CRC Press, 2024. http://dx.doi.org/10.1201/9781003449065-7.

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Levin, Boris. "From Straight Radiators to Long Lines." In Antennas. CRC Press, 2024. http://dx.doi.org/10.1201/9781003449065-1.

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Levin, Boris. "Application of Method of Complex Potential." In Antennas. CRC Press, 2024. http://dx.doi.org/10.1201/9781003449065-6.

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Levin, Boris. "Some Types of Antennas and Cables." In Antennas. CRC Press, 2024. http://dx.doi.org/10.1201/9781003449065-8.

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Actas de conferencias sobre el tema "Antennas"

Ibili, Hande, Tobias Blatter, Laurenz Kulmer, et al. "Driverless On-Chip Sub-THz Plasmonic Modulator Antenna Receiver." In Frontiers in Optics. Optica Publishing Group, 2024. https://doi.org/10.1364/fio.2024.fm3c.4.

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We present an amplifier-free on-chip antenna-integrated plasmonic modulator receiver in sub-THz regime. A framework for designing plasmonic antennas and transmission of up to 80Gbit/s in a wireless sub-THz link starring these receivers are shown.

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Anand Kumar, A., M. Kathirvelu, C. Bharathiraja, G. Guruprasath, P. Karthickprasad, and D. Navinya. "Design of Wearable Textile Antenna for Medical and Wireless Application." In International Conference on Design, Materials and Metaheuristic Algorithms for Engineering. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-oakl4q.

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Wearable antenna design is becoming a growing subject of study because of its numerous applications. Patch antennas are the major focus of the Wireless Body Area Network (WBAN) application since they are affordable, lightweight, and have a straightforward design. With wearable uses in mind, we will be using a microstrip patch antenna. The planned antenna has measurements of 60 X 60 X 1.6 mm and a fr4 dielectric constant substrate with value of 1.6. Resonance frequency of the antenna is 2.45 GHz. It is possible to use this proposed antenna in military jackets, and it has a gain of 2.96 dBi. Due

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Lavin, Ronald, Glenn Pyle, Mark Robeson, and Dennis McCarthy. "Dual-Use Structures: Apache Empennage Integral Driveshaft Cover Antenna." In Vertical Flight Society 71st Annual Forum & Technology Display. The Vertical Flight Society, 2015. http://dx.doi.org/10.4050/f-0071-2015-10251.

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Many modern aircraft, including rotorcraft, require conformal antennas and fairings to reduce wind drag, ice accretion, lightning strikes, and impact damage. An innovative approach to embedding Very High Frequency (VHF) antenna elements in the leading and trailing edges of a helicopter empennage has been developed. A prototype has been fabricated and tested on a mockup of a helicopter empennage, consisting of the vertical stabilizer (tail), horizontal stabilator, and gearbox. Testing has shown that the design can meet typical communications range requirements. A history of helicopter empennage

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Tyrell, Stacey, Mark Robeson, Courtney Kube, Dennis McCarthy, and Ronald Lavin. "Dual-Use Structures: Composite Wing with Structural Antenna Aperture." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11552.

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Many modern aircraft, including rotorcraft, require conformal antennas and fairings to reduce wind drag, ice accretion, lightning strikes, and impact damage. An innovative composite wing configuration with a structural Ultra High Frequency (UHF) antenna window "aperture" has been developed. The wing is based on variants of lightweight X-Cor® sandwich core technology for durability and damage tolerance, with tailored electromagnetic properties in the aperture region of the wing. This paper presents a brief introduction to helicopter wings, a summary of recent research at Boeing and Army leading

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Christiansen, Joel T., Jeremy A. Walraven, Flora A. Coleman, Edmund H. Smith, and Edward I. Cole. "Heterogeneous Integrated Failure Analysis Using Radio Frequency Signal Detection/Injection with Power Spectrum Analysis." In ISTFA 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.istfa2024p0501.

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Abstract The rise of 2.5D and 3D heterogeneous integrated devices presents unique challenges for failure analysis, as traditional 2D analysis techniques prove inadequate due to chip stacking, layer interconnects, die obscuration, and limited access to test points. While various non-destructive techniques—including 3D X-ray imaging, lock-in thermography, magnetic field imaging, and optical beam methods—offer partial solutions, each has specific limitations. We present a novel defect localization approach using radio frequency electromagnetic (EM) emanations, implemented in two ways: detecting E

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Sulic, E., B. Pell, S. John, et al. "Performance of Embedded Multi-Frequency Communication Devices in Smart Composite Structures." In ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2008. http://dx.doi.org/10.1115/smasis2008-402.

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Lately, there has been an increased demand for vehicle manufacturers to incorporate a large number of communication, security, guidance and entertainment devices in their new vehicle models. In recent decades, the list has expanded from the AM and FM radio antennas to include GPS, mobile phone, collision avoidance radar, Digital Radio and Digital TV antennas. In addition, new technologies such as vehicle to vehicle and vehicle to road side communication are being implemented at 5.9 GHz in the next generation of vehicles. In the past the AM/FM antenna was typically a mast antenna protruding fro

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Shah, Hamil, Abdullahi Inshaar, Chengzhe Zou, et al. "Multiphysics Modeling and Experimental Validation of Reconfigurable, E-Textile Origami Antennas." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85603.

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Physical deformation mechanisms are emerging as compelling and simple ways to adapt radio frequency (RF) characteristics of antennas in contrast to digital steering approaches acting on topologically fixed antennas. Concepts of physical reconfigurability also enable exceptional capabilities such as deployable and morphing antenna arrays that serve multiple functions and permit compact transport with ease. Yet, the emergent concepts lack broad understanding of effective approaches to integrate conformal, electrically conductive architectures with high-compliance foldable frameworks. To explore

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Yoon, Hwan-Sik, and Gregory Washington. "Analysis of Active Doubly Curved Antenna Structures." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0957.

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Abstract Recently, aperture antennas that have the ability to change their reflector shape through the usage of piezoelectric actuators have been studied. The results show that those antennas can exhibit beam steering and beam shaping in the far-field. However, the previous studies have been confined to cylindrical shape antennas. This study examines the use of “doubly curved” antenna structures to achieve better performance in controlling an antenna’s coverage area. The spherical antenna is modeled as a shallow spherical shell with a small hole at the apex for mounting. Following Reissener’s

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Wang, C. S., H. Bao, and W. Wang. "Coupled Structural-Electromagnetic Optimization and Analysis of Space Intelligent Antenna Structural Systems." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59306.

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For high electromagnetic performances, large space truss antennas should have reflector surface with an extremely high precision. Due to the varied load and some random disturbances, active control strategy is always used in the kind of structure for the precise surface. For the improvement of the electromagnetic performances, an electromechanical synthesis optimization model of space antenna structure systems is developed based on the antenna’s characteristics, which adopts the axial gain of antenna and power consumption of actuators as the objective functions, and structural material strengt

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Shahanas, K. S., R. Sruthy, K. R. Rahna, M. Sumi, and A. I. Harikrishnan. "Review on UHF RFID Tag Antenna." In 2nd International Conference on Modern Trends in Engineering Technology and Management. AIJR Publisher, 2023. http://dx.doi.org/10.21467/proceedings.160.42.

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This paper presents a comprehensive review of ultra-high frequency (UHF) radio frequency identification (RFID) tag antennas. Due to multiple benefits, RFID technology has supplanted conventional methods of identification like barcodes, magnetic stripe cards, and smart cards. The size of the antenna plays a crucial role in determining the overall dimensions of the RFID tag, making antennas typically low profile and compact. It is acknowledged as an innovative approach for tracking because of its affordable price, passive wireless power transfer capabilities, versatility, and non-line-of-sight c

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Informes sobre el tema "Antennas"

Maragoudakis, Christos E., and Edward Rede. Validated Antenna Models for Standard Gain Horn Antennas. Defense Technical Information Center, 2009. http://dx.doi.org/10.21236/ada629345.

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Lewis, Richard L. Spherical-wave source-scattering matrix analysis of antennas and antenna-antenna interactions. National Bureau of Standards, 1995. http://dx.doi.org/10.6028/nist.tn.1373.

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Ho, Ping-Tong. Reconfigurable Antennas. Defense Technical Information Center, 1996. http://dx.doi.org/10.21236/ada304993.

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Long, Stuart A., and David R. Jackson. Millimeter Wave Antennas. Defense Technical Information Center, 1988. http://dx.doi.org/10.21236/ada201919.

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Boyns, J. JTIDS Shipboard Antennas. Defense Technical Information Center, 1995. http://dx.doi.org/10.21236/ada297554.

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Kramer, B., M. Lee, C. C. Chen, G. Kiziltas, J. L. Volakis, and J. H. Holloran. UWB Conformal Antennas. Defense Technical Information Center, 2004. http://dx.doi.org/10.21236/ada425105.

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Farr, Everett G., and Charles A. Frost. Ultra-Wideband Antennas and Propagation. Volume 1: Antenna Design, Predictions, and Construction. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada328786.

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Farr, Everett G., and Charles A. Frost. Ultra-Wideband Antennas and Propagation. Volume 2: Antenna Measurements and Signal Processing. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada328787.

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Frechet, Jean M. Macromolecular Antennas and Photovotaics. Defense Technical Information Center, 2004. http://dx.doi.org/10.21236/ada424130.

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Bernhard, Jennifer T., and Joshua A. Fladie. Wideband Conformal Antennas and Arrays. Defense Technical Information Center, 2005. http://dx.doi.org/10.21236/ada443477.

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