DICHROIC DESIGN FOR THE ORBITING VLBI EARTH STATION ANTENNA

被引：9

作者：

WU, TK ^{[1
]}

SHILLUE, WP ^{[1
]}

机构：

[1] NATL RADIO ASTRON OBSERV,GREEN BANK,WV 24944

来源：

IEE PROCEEDINGS-MICROWAVES ANTENNAS AND PROPAGATION | 1994年 / 141卷 / 03期

关键词：

DICHROIC DESIGN; ORBITING VLBI EARTH STATION ANTENNA;

D O I：

10.1049/ip-map:19941035

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 the paper the design and performance of a single screen frequency selective surface (FSS) with gridded square loop patch element are described for diplexing the X- and Ku-band signals in an orbiting very long baseline interferometer (OVLBI) earth station reflector antenna system. The FSS grids were designed using an analysis code incorporating the accurate integral equation technique. The effects of the dielectric substrate and superstrate are accurately evaluated by this technique. Excellent agreement is obtained between the predicted and measured results. This validates the FSS design using the gridded square loop element. If the grid is sandwiched between two 0.889 mm thick Teflon slabs, the resonant frequency drift is noticeably reduced as the incident angle steered from normal to 40-degrees.

引用

页码：181 / 184

页数：4