Results 111 to 120 of about 32,104 (146)
Some of the next articles are maybe not open access.
Antenna Systems for Simultaneous Transmit and Receive (STAR) Applications
International Symposium on Microelectronics, 2017Abstract Several novel wideband co-polarized circulator-less monostatic antenna and array designs for co-channel simultaneous transmit and receive (STAR) applications are presented. The monostatic STAR apertures are demonstrated first by utilizing multi-arm spiral antennas where a set of arms is used for transmitting (TX) and the other ...
Ehab A. Etellisi +2 more
openaire +1 more source
Wideband simultaneous transmit and receive (STAR) bi-layer circular array
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015The main challenge with the full-duplex simultaneous transmit and receive (STAR) systems is achieving high isolation over a wide bandwidth while preserving identical (or similar) radiation patterns in both, the transmitting and receiving modes. In this paper, a novel low profile wideband bi-layer STAR circular array configuration is presented.
Ehab A. Etellisi +2 more
openaire +1 more source
High-Directivty Broadband Simultaneous Transmit and Receive (STAR) Antenna System
2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2018A broadband, circularly polarized (CP), and high-directivity STAR reflector antenna system is proposed. The high system isolation is achieved by mounting well-designed CP receiving (RX) and transmitting (TX) antennas with high front-to-back ratio (F/B) back-to-back.
Prathap Valale Prasannakumar +2 more
openaire +1 more source
Bi-Static Simultaneous Transmit And Receive (STAR) Antenna Array System
2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019Bi-static, dual-polarized antenna array subsystem with high isolation between transmitting (TX) and receiving (RX) ports is proposed. Each array consists of eight active patch antenna elements built on a single layer substrate. Microstrip and substrate integrated waveguide (SIW) feed networks are used to excite broadside and scanned beams.
Prathap Valale Prasannakumar +5 more
openaire +1 more source
Phased Array Antenna for Bi-Static Simultaneous Transmit and Receive (STAR) system
2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, 2020Bi-static simultaneous transmit and receive shared phased array aperture with wide-angle beam steering is discussed. Antenna system works over a narrow frequency range in K-band and has $10\times 10$ circularly polarized stacked-patch antenna elements distributed in two 10×5 apertures for transmit and receive.
D.-C. Son +4 more
openaire +1 more source
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
William F. Moulder +2 more
openaire +1 more source
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.
Jie Wu +3 more
openaire +1 more source
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.
Jie Wu +3 more
openaire +1 more source
Ultra-wideband circularly-polarized simultaneous transmit and receive (STAR) antenna system
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015This paper presents a novel circularly-polarized simultaneous transmit and receive (STAR) monostatic antenna system based on the four-arm spiral-helix antenna. The four-arm spiral is configured such that two arms are used for transmitting and the other two arms for receiving. Microstrip feeds with impedance transformers are used to feed the two two-arm
Mohamed A. Elmansouri +2 more
openaire +1 more source
On wideband simultaneous transmit and receive (STAR) with a single aperture
2016 IEEE International Symposium on Antennas and Propagation (APSURSI), 2016Multi-arm spiral antennas have not only ability to radiate multiple frequency independent modes [1,2], but also inherent ability to act as monostatic co-channel simultaneous transmit and receive (STAR) apertures. Four-arm spirals are herein used for demonstrating this capability.
Dejan S. Filipovic +2 more
openaire +1 more source
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 ...
Kenneth E. Kolodziej +2 more
openaire +1 more source
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 ...
Kenneth E. Kolodziej +2 more
openaire +1 more source

