A Full-Duplex Dual Wideband Horn Antenna With High Port-to-Port Isolation

被引：0
作者：
Tao, Yulin [1 ]
Deng, Changjiang [1 ,2 ]
Cao, Xiaowei [1 ]
Sarabandi, Kamal [3 ]
机构：
[1] Beijing Inst Technol, Sch Integrated Circuits & Elect, Beijing Key Lab Millimeter Wave & Terahertz Techno, Beijing 100081, Peoples R China
[2] Beijing Inst Technol, Tangshan Res Inst, Tangshan 063099, Peoples R China
[3] Univ Michigan, Dept Elect Engn & Comp Sci, Radiat Lab, Ann Arbor, MI 48109 USA
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2024年 / 72卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Horn antennas; Stars; Gain; Couplings; Corrugated surfaces; Antenna measurements; Surface impedance; Polarization; Couplers; Broadband antennas; Horn antenna; isolation improvement; simultaneous transmit and receive (STAR); wideband; SIMULTANEOUS TRANSMIT; MICROSTRIP ANTENNAS; RADIO-REPEATER; SYSTEM; ARRAY;
D O I：
10.1109/TAP.2024.3467693
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：
A highly isolated dual-band full-duplex antenna subsystem operating at 8-18 GHz (X-/Ku-band) and 32-40 GHz (Ka-band) is presented. Each band includes two conical horn antennas which are juxtaposed side-by-side. Dual circular polarization (CP) is generated by using a 3 dB coupler in the lower band and a septum polarizer in the upper band. The two pairs of horns are embedded within and alongside a metallic cylinder with an edge-to-edge distance of 240 mm for the X-/Ku-band and 75 mm for the Ka-band. In order to increase the Tx-Rx isolation, three sets of annular corrugations are etched on the side wall of the cylindrical cavity and conformal absorbers are added around the horns in X-/Ku-band. A prototype antenna system is fabricated and measured. The measured Tx-Rx isolation is greater than 80.9 dB in the X-/Ku-band and 71.6 dB in the Ka-band. The measured gain in the two bands is higher than 14.3, and 20.1 dBiC, respectively.
引用
收藏
页码：8876 / 8881
页数：6
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