Results 151 to 160 of about 911 (207)
LHCP/RHCP reconfigurable transmitarray in Ka-band
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015 In this contribution, we propose the design of a circularly-polarized reconfigurable transmitarray based on a 1-bit unit-cell (i.e. with two phase states, 0° and 180°) operating in linear polarization. Applying the sequential rotation technique, the possibility to switch between the two circular (LHCP/RHCP) polarizations will be presented.
Di Palma, Luca +5 more
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A Low-Profile Quad-Beam Transmitarray
IEEE Antennas and Wireless Propagation Letters, 2020In this letter, a novel method is proposed to design a low-profile multibeam transmitarray. Instead of a conventional horn feed, a slot array (SA) feed is used to illuminate uniformly same size transmitarray aperture (TA) in near field with a plane wave excitation, and TA is designed to transform plane wave to high gain multibeam pattern.
Abdul Aziz +2 more
exaly +2 more sources
An Amplifying Tunable Transmitarray Element
IEEE Antennas and Wireless Propagation Letters, 2014In this letter, a transmitarray element with electronically tunable and amplifying features is proposed. This transmitarray element consists of stacked patches, an amplifier, and reflection-type phase shifters. The linearly polarized wave is converted into the guided wave by the receiver patch.
Wenbo Pan, Xiangang Luo
exaly +2 more sources
Electronically Reconfigurable Transmitarray at Ku Band for Microwave Applications [PDF]
IEEE Transactions on Antennas and Propagation, 2010 An electronically reconfigurable transmitarray device at 12 GHz is presented in this work. This paper highlights the functioning of this kind of device and thoroughly examines the proposed reconfigurable transmitarray. The architecture is discussed along
Pablo Padilla +2 more
exaly +2 more sources
Circularly Polarized Transmitarray Antennas at Ka-Band
IEEE Antennas and Wireless Propagation Letters, 2018 International audienceThis letter presents the simulation, optimization, and demonstration of a collimated-beam transmitarray and a quad-beam transmitarray operating at Ka-band.
Fatimata Diaby +2 more
exaly +2 more sources
Electronics (Switzerland), 2022 This paper highlights recent developments and challenges on beam steering characteristics of reconfigurable transmitarray antennas. It introduces the operating principle of beam forming/beam steering high gain transmitarray antennas to enable the user to
Qasim Ali +2 more
exaly +2 more sources
A Review on Conformal Transmitarrays
2021 15th European Conference on Antennas and Propagation (EuCAP), 2021This paper presents an overview of research on conformal transmitarrays conducted in University of Technology Sydney, Australia. More specifically, it includes our latest progress in beam scanning conformal transmitarrays and high-efficiency ones.
Li-Zhao Song, Pei-Yuan Qin, Y. Jay Guo
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Transmitarray Element with Three Phase States for Reconfigurable Transmitarrays
2019 19th International Symposium on Communications and Information Technologies (ISCIT), 2019In this paper, a three-phase state element for reconfigurable transmitarrays is presented. The element is formed by C- patches and C-slots. The three phase states are obtained by controlling four p-i-n diodes. The element is optimized using full-wave electromagnetic simulation and then validated by using an ad-hoc waveguide simulator.
H. Minh Nguyen +2 more
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2020 IEEE Asia-Pacific Microwave Conference (APMC), 2020
In this paper, demonstration of a dual-polarized ultra-wideband transmitarray antenna with Vivaldi elements is presented. The aperture features a physical area of 1.1×0.35m2, providing a peak gain of 26 ~ 36dBi within a frequency band from 5 to 16GHz. The experimental results show that the transmitarray antenna has stable radiation performances within ...
Lin Xiao +4 more
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In this paper, demonstration of a dual-polarized ultra-wideband transmitarray antenna with Vivaldi elements is presented. The aperture features a physical area of 1.1×0.35m2, providing a peak gain of 26 ~ 36dBi within a frequency band from 5 to 16GHz. The experimental results show that the transmitarray antenna has stable radiation performances within ...
Lin Xiao +4 more
openaire +1 more source