采用MMIC前置放大器的85-115 GHz低温焦平面阵列

1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282) Pub Date : 1999-06-13 DOI:10.1109/22.808962

N. Erickson, R. Grosslein, R. Erickson, S. Weinreb

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引用次数: 75

摘要

介绍了一种新的85-115 GHz焦平面阵列。该阵列具有16个像素，并使用增益为40 dB的InP MMIC前置放大器，然后使用宽带次谐波混频器转换为5-20 GHz中频频段。采用了低损耗隔离器，实现了良好的输入匹配。方形波纹进给角用于有效填充焦平面。关键部件在20k的温度下工作。噪声温度在50-130 K之间变化，包括整个波段的所有像素。

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A cryogenic focal plane array for 85-115 GHz using MMIC preamplifiers

A new focal plane array for 85-115 GHz is described. This array has 16 pixels, and uses InP MMIC preamplifiers with 40 dB gain, followed by a wideband subharmonic mixer to convert to a 5-20 GHz IF band. A low loss isolator is used to achieve an excellent input match. Square corrugated feed horns are used for efficient filling of the focal plane. Critical components are operated at a temperature of 20 K. The noise temperature varies from 50-130 K, including all pixels, across the full band.

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来源期刊

1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282)

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