Results 191 to 200 of about 1,290 (225)
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IEEE Antennas and Wireless Propagation Letters, 2020
A compact, high-isolation, monostatic, co-circularly polarized (CP) simultaneous transmit and receive (STAR) antenna with similar radiation patterns is presented. The proposed antenna system consists of a sequentially rotated array (SRA) of four dual-polarized antenna elements and two quadrature feeding networks.
Yu-Xiang Sun, Di Wu, Ruina Lian
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A compact, high-isolation, monostatic, co-circularly polarized (CP) simultaneous transmit and receive (STAR) antenna with similar radiation patterns is presented. The proposed antenna system consists of a sequentially rotated array (SRA) of four dual-polarized antenna elements and two quadrature feeding networks.
Yu-Xiang Sun, Di Wu, Ruina Lian
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2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2017
The operational principles of circularly-polarized (CP) antenna elements for use in wideband simultaneous transmit and receive (STAR) antenna arrays are presented and discussed in this paper. Based on these operating principle, two designs of CP STAR array elements are presented.
Mingjian Li, Nader Behdad, Yu Jian Cheng
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The operational principles of circularly-polarized (CP) antenna elements for use in wideband simultaneous transmit and receive (STAR) antenna arrays are presented and discussed in this paper. Based on these operating principle, two designs of CP STAR array elements are presented.
Mingjian Li, Nader Behdad, Yu Jian Cheng
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Wideband antenna array for Simultaneous Transmit and Receive (STAR) applications
2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2014A wideband antenna array for Simultaneous Transmit and Receive (STAR) applications is presented. The design is comprised of a ring array of TEM horns, and a monocone at the array's center. When the array is phased with the first order circular mode, it is isolated from the monocone. Thus, the array may be used in reception while the monocone is used in
Bradley T Perry
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IEEE Antennas and Wireless Propagation Letters, 2019
In this letter, a monostatic and cochannel simultaneous transmit and receive (STAR) antenna with identical circularly polarized radiations of transmitting (TX) and receiving (RX) channels is designed using a thin single-layer substrate. Four concentrically arranged microstrip radiating elements are properly excited by two sets of feeding networks: the ...
Yijing He, Jiadong Hu, Yue Li
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In this letter, a monostatic and cochannel simultaneous transmit and receive (STAR) antenna with identical circularly polarized radiations of transmitting (TX) and receiving (RX) channels is designed using a thin single-layer substrate. Four concentrically arranged microstrip radiating elements are properly excited by two sets of feeding networks: the ...
Yijing He, Jiadong Hu, Yue Li
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2015 IEEE MTT-S International Microwave Symposium, 2015
Simultaneous Transmit and Receive operation requires a high amount of transmit-to-receive isolation in order to avoid self-interference. This isolation is best achieved by utilizing multiple cancellation techniques. The combination of adaptive multiple-input multiple-output spatial cancellation with a high-isolation antenna and RF canceller produces a ...
Jeffrey S Herd +2 more
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Simultaneous Transmit and Receive operation requires a high amount of transmit-to-receive isolation in order to avoid self-interference. This isolation is best achieved by utilizing multiple cancellation techniques. The combination of adaptive multiple-input multiple-output spatial cancellation with a high-isolation antenna and RF canceller produces a ...
Jeffrey S Herd +2 more
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2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2018
We demonstrate a wideband scanning 4-arm spiral antenna array with high transmit/receive isolation for Simultaneous Transmit and Receive (STAR). STAR increases a channel's spectral efficiency by transmitting and receiving across the full bandwidth of a channel. To our knowledge, this is the first STAR array to demonstrate scanning across GHz bandwidths.
John L. Volakis +2 more
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We demonstrate a wideband scanning 4-arm spiral antenna array with high transmit/receive isolation for Simultaneous Transmit and Receive (STAR). STAR increases a channel's spectral efficiency by transmitting and receiving across the full bandwidth of a channel. To our knowledge, this is the first STAR array to demonstrate scanning across GHz bandwidths.
John L. Volakis +2 more
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2022 23rd International Radar Symposium (IRS), 2022 306311Due to new technological advancements in the field of communication and radar the demand for frequency spectrum is increasing. As the usable spectrum is inherently limited, this leads to congestion and, in some cases, a contested EM spectrum ...
Stephan Putz, Matthias Weis
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A Wideband Concurrently Dual-Circularly Polarized Simultaneous Transmit and Receive (STAR) Antenna
2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI), 2021Changzhan Gu, Junfa Mao, Jingyun Lu
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Novel High Isolation Antennas for Simultaneous Transmit and Receive (STAR) Applications [PDF]
, 2023 Radio frequency (RF) spectrum congestion is a major challenge for the growing need of wireless bandwidth. Notably, in 2015, the Federal Communications Commission (FCC) auctioned just 65 MHz (a bandwidth smaller than that used for WiFi) for more than $40 ...
Hovsepian, Alexander
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