A Low-Sidelobe Circularly Polarized Continuous Beam-Scanning Array Using Double-Layer Rotated Structure for Ku-Band Satellite Communications

被引：11

作者：

Hu, Bo ^{[1
]}

Chen, Peng ^{[1
]}

Zhang, Ke ^{[1
]}

Xu, Jun ^{[2
]}

Yu, Xutao ^{[1
]}

机构：

[1] Southeast Univ, Sch Informat Sci & Engn, State Key Lab Millimeter Waves, Nanjing 210096, Peoples R China

[2] City Univ Hong Kong, Dept Elect Engn, State Key Lab Terahertz & Millimeter Waves, Hong Kong, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2022年 / 21卷 / 03期

基金：

美国国家科学基金会;

关键词：

Antenna arrays; Couplings; Slot antennas; Phased arrays; Phase shifters; Satellite antennas; Transmission line matrix methods; Array antenna; circularly polarized (CP); low-sidelobe level (SLL); satellite communications; substrate integrated waveguide (SIW); DESIGN; RECEIVER;

D O I：

10.1109/LAWP.2021.3139340

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：

In this letter, a low-sidelobe level (SLL) circularly polarized (CP) beam-scanning array antenna based on a double-layer rotated structure is proposed for Ku-band satellite communications. It is comprised of a 16 x 24 CP substrate integrated waveguide slot antenna array and a rotatable feeding network. Detailed design methodology and working mechanism of the proposed antenna array are presented and analyzed, in particular, the method of achieving low SLL in Blass matrix design. A prototype was fabricated and measured, and the measured results indicate that an AR < 1.5 dB and a max SLL suppression of 19.4 dB at 11.95 GHz can be achieved. Its superiorities of low profile, low SLL, high gain, and continuous beam-scanning ability make the proposed array antenna a promising candidate for satellite communications.

引用

页码：605 / 609

页数：5

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