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Добірка наукової літератури з теми "RECONFIGURABLE PATCH ANTENNA"

Автор: Grafiati

Опубліковано: 11 вересня 2023

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Дисертації з теми "RECONFIGURABLE PATCH ANTENNA"

1

Yee, Steven C. (Steven Christopher) 1989. "A frequency reconfigurable circularly polarized microstrip patch antenna using liquid metal microswitches." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82359.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 78-80).<br>Reconfigurable antennas with adaptable frequency, pattern, and polarization offer flexibility and size reduction for wireless systems that must increasingly execute multiple missions with less volume. These antennas will also complement anticipated cognitive radio systems, which promise more efficient use of the electromagnetic spectrum. Microscale liquid metal switches are proposed to ov

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2

Jung, Chang won, Ming-jer Lee, Sunan Liu, G. P. Li, and Flaviis Franco De. "RECONFIGURABLE PATCH ANTENNA FOR FREQUENCY DIVERSITY WITH HIGH FREQUENCY RATIO (1.6:1)." International Foundation for Telemetering, 2005. http://hdl.handle.net/10150/605028.

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ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>Reconfigurable patch antenna integrated with RF mircoelectromechanical system (MEMS) switches is presented in this paper. The proposed antenna radiates circularly polarized wave at selectable dual frequencies (4.7 GHz and 7.5GHz) of high frequency ratio (1.6:1). The switches are incorporated into the diagonally-fed square patch for controlling the operation frequency, and a rectangular stub at

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3

Pan, Kuan-Chang. "Ferroelectric Barium Strontium Titanate Thin-Film Varactor Based Reconfigurable Antenna." University of Dayton / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1323453777.

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4

Balcells, Ventura Jordi. "Radiation pattern reconfigurable microfabricated planar millimeter-wave antennas." Doctoral thesis, Universitat Politècnica de Catalunya, 2011. http://hdl.handle.net/10803/32032.

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Els serveis de telecomunicacions i sistemes radar estan migrant a freqüències mil•limètriques (MMW), on es disposa d 'una major amplada de banda i conseqüentment d'una major velocitat de transmissió de dades. Aquesta migració requereix de l'ús de diferents tecnologies amb capacitat d'operar a la banda de freqüències mil•limètriques (30 a 300 Ghz), i més concretament en les bandes Ka (26,5 - 40GHz), V (50 – 75GHz) i W (75 – 110GHz). En moltes aplicacions i sobretot en aquelles on l'antena forma part d'un dispositiu mòbil, es cerca poder utilitzar antenes planes, caracteritzades per tenir unes

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5

Towfiq, MD Asaduzzaman. "Application Aware Reconfigurable Antennas and Arrays for 5G and Beyond Wireless Communication Systems." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/7250.

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Antennas enable wireless communication by transmission and reception of electromagnetic (EM) signals, which carry information is space. Signal reception and hence the quality of service depends significantly on the antenna properties, e.g. radiation pattern, operational frequency, and polarization. Legacy antennas, with their fixed properties, fail to adapt to the changing environment and degrade signal quality. Reconfigurable antennas (Ras) capable of changing their properties dynamically increase the capacity and data rate of wireless systems while offering a compact design. However, these a

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6

Zlatníček, Radek. "Rekonfigurovatelná flíčková anténa." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219099.

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The master's thesis deals with the design and implementation of a reconfigurable patch antenna. The antenna is fed by a microstrip transmission line. To the microstrip feeder, tuning stubs are connected. Each stub matches the input impedance of the antenna to 50 ? for different operation frequencies. Stubs can be individually connected to the feeder by PIN diodes; operation frequency of the antenna can be switched that way. In the project, the antenna is initially designed for antenna substrate RO3006. Then, the design will be converted to the substrate ARLON AD600 selected for the realization

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7

Elfergani, Issa T. "Investigation, design and implementation of frequency tuneable antennas for mobile handset and UWB applications : simulation and measurement of tunable antennas for handheld mobile handsets and UWB system, investigations of frequency tuneable range, antenna radiation performance and antenna design optimisation using parametric studies." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/13761.

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8

Obeidat, Khaled Ahmad. "Design Methodology for Wideband Electrically Small Antennas (ESA) Based on the Theory of Characteristic Modes (CM)." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1274730653.

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9

SHARMA, KHUSHBU. "A RECONFIGURABLE PATCH ANTENNA WITH EBG STRUCTURE." Thesis, 2018. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16535.

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Microstrip antennas are widely used in wireless communications because of their compatibility, low profile, low power consumption and low cost. The capability to select the frequency is essential for diverse missions and this is achieved by a Reconfigurable Antenna. Resonant frequency of an antenna is changed by reconfiguring its geometrical structure. To achieve reconfigurability RF switching devices such as PIN diodes , photoconductive switches, micro-electromechanical system (MEMS) switches and FETs can be used. Electromagnetic Bandgap (EBG) Structures that are those structures in

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10

Chen, Shing-Hau, and 陳星豪. "Reconfigurable Microstrip Ring Patch Antenna." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/37865871203503266324.

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碩士<br>國立彰化師範大學<br>電機工程學系<br>95<br>The designs of a reconfigurable ring patch antenna are proposed and studied in this dissertation. The thesis is mainly divided into three topics. First, the design of a ring patch antenna with wideband and dual-frequency operations is presented. The antenna consists of a parasitic square ring patch that is shorted to the ground plane through two shorting walls and is excited by a top-loaded coaxial probe. For the proposed design, while the side length of the square ring patch is about 0.3 free-space wavelengths and the antenna height is less than 0.1 free-spac

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