A quantum-limited submillimeter mixer with an inhomogeneous distributed SIS junction array

被引：0
|
作者：
Shani, W. L. [1 ]
S C. Shu [1 ]
Sekimoto, Y. [2 ]
Noguchi, T. [2 ]
机构：
[1] Natl Astron Observ, Purple Mt Observ, Nanjing 210008, Peoples R China
[2] Natl Observ Japan, Mitaka, Tokyo 1818588, Japan
来源：
2007 5TH INTERNATIONAL CONFERENCE ON MICROWAVE AND MILLIMETER WAVE TECHNOLOGY PROCEEDINGS | 2007年
关键词：
SIS mixers; submillimeter wave; distributed junction array; noise temperature; gain flatness;
D O I：
暂无
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：
Heterodyne mixing performance, of a waveguide SIS mixer with inhomogeneous distributed junction (DJ) array composed of 3 SIS junctions is experimentally Investigated at 375-500GHz. Quantum-limited noise temperature of 3-DJ mixer is demonstrated. Besides Its low noise temperature, the mixer conversion gain of 3-DJ mixer Is round to be more uniform over RF band than that of a PCTJ (parallel-connected twin junctions) mixer. The FTS (Fourier transform spectrum) response Indicates a broad RF bandwidth of the 3-DJ mixer that is limited by the bandwidth of waveguide probe instead of mixer's tuning circuit.
引用
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页码：669 / +
页数：2
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