A 530-GHz balanced mixer
A 530-GHz balanced mixer
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530GHz 平衡混频器
DOI:
10.1109/75.808038
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发表时间:
1999
期刊:
影响因子:
--
通讯作者:
J. Zmuidzinas
中科院分区:
文献类型:
--
作者:
G. Chattopadhyay;F. Rice;David A. Miller;H. Leduc;J. Zmuidzinas
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/spl deg/ 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.