L-Band Feed Horn and Orthogonal Mode Transducer for the KAT-7 Radio Telescope
L-Band Feed Horn and Orthogonal Mode Transducer for the KAT-7 Radio Telescope
复制标题
DOI：
10.1109/tap.2011.2122217
复制
发表时间：
2011-03
影响因子：
5.7
通讯作者：
R. Lehmensiek;I. Theron
中科院分区：
文献类型：
--
作者：
R. Lehmensiek;I. Theron
介绍了宽带L波段宽张角波纹锥形喇叭及其正交模传感器的设计、仿真和测量性能。该馈源喇叭用于七元干涉仪的主焦点抛物面反射器天线，该干涉仪是卡鲁阵列望远镜项目的一部分。该喇叭的设计目的是为了在 47.6% 相对带宽的频段上最大限度地提高射电望远镜的灵敏度。正交模式传感器设计具有低插入和传输损耗以及良好的隔离性，并且由于其紧凑的尺寸，需要非常小的低温冷却系统。
The design, simulation and measured performance of a broad bandwidth L-band wide flare angle corrugated conical horn and its orthogonal mode transducer are presented. The feed horn is used on prime focus parabolic reflector antennas of a seven-element interferometer, which is part of the Karoo Array Telescope project. The horn was designed to maximize the sensitivity of the radio telescope over a frequency band of 47.6% relative bandwidth. The orthogonal mode transducer design has low insertion and transmission losses and good isolation, and because of its compact size requires a very small cryogenic cooling system.