Quasi-optical SIS mixers with normal metal tuning structures

被引：22

作者：

Bin, M ^{[1
]}

Gaidis, MC ^{[1
]}

Zmuidzinas, J ^{[1
]}

Phillips, TG ^{[1
]}

机构：

[1] JET PROP LAB 320 231,CTR SPACE MICROELECT TECHNOL,PASADENA,CA 91109

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1997年 / 7卷 / 02期

关键词：

SIS mixers; submillimeter receivers;

D O I：

10.1109/77.622176

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：

We recently reported [8] a quasi-optical SIS mixer which used Nb/Al-oxide/Nb tunnel junctions nad a normal-metal (Al) tuning circuit to achieve and uncorrected receiver noise temperature of 840 K (DSB) at 1042 GHz. Here we present results on several different device designs, which together cover the 300 - 1200 GHz frequency range. The mixers utilize an antireflection-coated silicon hyper-hemispherical lens, a twin-slot antenna, and a two-junction tuning circuit. The broad-band frequency response was measured using Fourier transform spectrometry (FTS), and is in good agreement with model calculations. Heterodyne tests were carried out from 400 GHz up to 1040 GHz, and these measurements agree well with the FTS results and with calculations based on Tucker's theory.

引用

页码：3584 / 3588

页数：5

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