Balanced Receiver Technology Development for the Caltech Submillimeter Observatory

被引：26
作者：
Kooi, Jacob W. [1 ]
Chamberlin, Richard A. [1 ]
Monje, Raquel [1 ]
Force, Brian [1 ]
Miller, David [1 ]
Phillips, Tom G. [1 ]
机构：
[1] CALTECH, Submillimeter Astron & Instrumentat Grp, Pasadena, CA 91125 USA
来源：
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY | 2012年 / 2卷 / 01期
关键词：
AlN tunnel barrier; balanced mixer; dual-frequency observations; frequency dependent attenuator; heterodyne; high-current-density superconducting-insulating-superconducting (SIS) mixer; multi-layer vacuum window; quadrature hybrid; synthesized local oscillator (LO); W-band power amplifier; Wilkinson in phase power combiner; Yttrium-Iron-Garnet (YIG) tracking filter; WAVE-GUIDE;
D O I：
10.1109/TTHZ.2011.2177726
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：
The Caltech Submillimeter Observatory (CSO) is located on top of Mauna Kea, Hawaii, at an altitude of 4.2 km. The existing suite of facility heterodyne receivers covering the submillimeter band is rapidly aging and in need of replacement. To facilitate deep integrations and automated spectral line surveys, a family of remote programmable, synthesized, dual-frequency balanced receivers covering the astronomical important 180-720 GHz atmospheric windows is in an advanced stage of development. Installation of the first set of receivers is expected in the spring of 2012. Dual-frequency observation will be an important mode of operation offered by the new facility instrumentation. Two band observations are accomplished by separating the H and V polarizations of the incoming signal and routing them via folded optics to the appropriate polarization sensitive balanced mixer. Scientifically this observation mode facilitates pointing for the higher receiver band under mediocre weather conditions and a doubling of scientific throughput (2 4 GHz) under good weather conditions.
引用
收藏
页码：71 / 82
页数：12
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