Wideband, Scanning Array for Simultaneous Transmit and Receive

被引：0
|
作者：
Hovsepian, Alexander [1 ]
Venkatakrishnan, Satheesh Bojja [1 ]
Alwan, Elias A. [1 ]
Volakis, John L. [1 ]
机构：
[1] Florida Int Univ, Dept Comp & Elect Engn, Miami, FL 33199 USA
来源：
2018 INTERNATIONAL APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY SYMPOSIUM (ACES) | 2018年
关键词：
Antenna; beam steering; full duplex; simultaneous transmit and receive;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present a low profile wideband spiral antenna array with high transmit/receive (Tx/Rx) isolation and beam steering capability for simultaneous transmit and receive (STAR) systems. 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 wideband STAR spiral array with scanning. Each 4-arm spiral element consists of two arms for Tx and two more for Rx. To suppress grating lobes, the element spacing is kept at lambda(HIGH)/2. Full wave infinite array simulations show the port-to-port Tx/Rx isolation is >40dB at boresight across a 3 GHz bandwidth from 2-5GHz (2.5:1). This level of port-to-port isolation reduces to about 30dB when scanning down to 30 degrees. In addition, VSWR is < 2 and axial ratio < 3dB. A 3x3 array was fabricated and showed an average Tx/Rx isolation of 36dB with VSWR < 2.4.
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页数：2
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