Bearn-steerable radial-line slot antenna array

被引：2
|
作者：
Subbarao, B [1 ]
Fusco, VF [1 ]
机构：
[1] Queens Univ Belfast, High Frequency Labs, Belfast BT9 5AH, Antrim, North Ireland
来源：
IEE PROCEEDINGS-MICROWAVES ANTENNAS AND PROPAGATION | 2005年 / 152卷 / 06期
关键词：
D O I：
10.1049/ip-map:20045100
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：
The authors describe the design and performance of an annular slot planar array antenna which can steer right-hand or left-hand circularly linearly polarised waves. The array consists of a radial cavity waveguide whose elements, 12 crossed slots, are designed to radiate in the frequency range 9.1-9.4GHz. Phase shifters are realised by positioning dielectric fins in circular waveguides above each of these slots. In addition, the use of a four-probe three-post polariser to feed the radial cavity permits LHCP, RHCP or LP to be generated. The resulting array has an impedance bandwidth of 2% for < 1.2 VSWR. Beam scan angles of up to 35 degrees for RHCP/LHCP and LP were measured at 9.2 GHz and the gain of the antenna was 12.8 dBi.
引用
收藏
页码：515 / 519
页数：5
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