A 530-GHz balanced mixer

被引：16
|
作者：
Chattopadhyay, G [1 ]
Rice, F
Miller, D
LeDuc, HG
Zmuidzinas, J
机构：
[1] CALTECH, Dept Elect Engn, Pasadena, CA 91125 USA
[2] CALTECH, George Downs Lab Phys, Dept Phys, Pasadena, CA 91125 USA
[3] CALTECH, Jet Prop Lab 320 231, Ctr Space Microelect Technol, Pasadena, CA 91109 USA
来源：
IEEE MICROWAVE AND GUIDED WAVE LETTERS | 1999年 / 9卷 / 11期
基金：
美国国家航空航天局; 美国国家科学基金会;
关键词：
balanced mixer; low noise; superconductor-insulator-superconductor; (SIS) junctions;
D O I：
10.1109/75.808038
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 report on the design and performance of a 530-GHz balanced SIS mixer, the first balanced mixer in this frequency range. This quasi-optical balanced mixer utilizes a cross-slot antenna on a hyperhemispherical substrate lens with eight superconductor-insulator-superconductor (SIS) junctions and a 180 degrees lumped element IF hybrid circuit. The local oscillator (LO) and the radio frequency (RF) signal, orthogonal in polarization to each other, are coupled to the mixer using a wire-grid polarizer, The noise performance of the mixer is excellent, giving an uncorrected receiver noise temperature of 105 K (DSB) at 528 GHz.
引用
收藏
页码：467 / 469
页数：3
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