Results 211 to 220 of about 32,140 (247)

Bi-Static Simultaneous Transmit And Receive (STAR) Antenna Array System

2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019
Bi-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, Aman Samaiyar, M. A. Elmansouri, L. Boskovic, D. S. Filipovic, Sudhakar Rao   +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, 2020
Bi-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, A. Samaiyar, M. Elmansouri, D. Filipovic, P. Valale Prasannakumar   +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), 2014
A 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, Bradley T. Perry, Jeffrey S. Herd   +2 more
openaire   +1 more source

Circularly-polarized, unidirectional antennas for simultaneous transmit and receive (STAR) applications

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, null Yu Jian Cheng, Mingjian Li, Nader Behdad   +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, 2015
This 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, Ehab A. Etellisi, Dejan S. Filipovic   +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), 2016
Multi-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, Mohamed Elmansouri, Ehab A. Etellisi   +2 more
openaire   +1 more source

Simultaneous Transmit and Receive (STAR) system architecture using multiple analog cancellation layers

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, Bradley T. Perry, Jeffrey S. Herd   +2 more
openaire   +1 more source

Phased Array Antenna for Bi-Static Simultaneous Transmit and Receive (STAR) Systems

2019 IEEE International Symposium on Phased Array System & Technology (PAST), 2019
This paper discusses a bistatic Ku-band simultaneously transmitting and receiving (STAR) fixed beams array antenna system with high isolation between Tx and Rx elements. Arrays have eight active dual-pol patch antenna elements and two passive elements on either ends of the array.
Aman Samaiyar, Prathap Valale Prasannakumar, M. A. Elmansouri, L. Boskovic, D. S. Filipovic, Sudhakar Rao   +5 more
openaire   +1 more source

Wideband scanning array of spiral antennas for simultaneous transmit and receive (STAR)

2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2017
We present a low profile (λ LOW /8) wideband slot spiral antenna array with high transmit/receive (Tx/Rx) isolation and scanning capability for STAR systems. To our knowledge, this is the first wideband STAR array with circular polarization and scanning capability.
Alexander Hovsepian, Elias A. Alwan, John L. Volakis   +2 more
openaire   +1 more source

An Interior Parasitic Patch Antenna with Wide Isolation Bandwidth for Simultaneous Transmit and Receive (STAR)

2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019
A microstrip patch antenna with a 180° hybrid coupler and parasitic patches under radiating patches is proposed for STAR applications. The antenna geometry and isolation improving methods are explained. Simulation results of S-parameters, gain, antenna efficiency, and radiation patterns, are presented.
KueiJih Lu, Carlene Goodbody, Tutku Karacolak, Nghi Tran   +3 more
openaire   +1 more source