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:
IEEE Microwave and Guided Wave Letters
影响因子:
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通讯作者:
J. Zmuidzinas
J. Zmuidzinas
中科院分区:
--
文献类型:
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作者:
G. Chattopadhyay;F. Rice;David A. Miller;H. Leduc;J. Zmuidzinas

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我们报告的530 GHz的平衡SIS混频器,在这个频率范围内的第一个平衡混频器的设计和性能。这种准光平衡混频器采用了一个十字槽天线上的超半球形基板透镜与8个超导体-绝缘体-超导体(SIS)结和180/spl度/集总元件IF混合电路。本地振荡器(LO)和射频(RF)信号在偏振方向上彼此正交,使用线栅偏振器耦合到混频器。混频器的噪声性能非常出色,在528 GHz时,未校正的接收机噪声温度为105 K(DSB)。
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.