Antenna-coupled bolometer with a micromachined-beam thermal link

被引:9
|
作者
Osterman, DP [1 ]
Patt, R [1 ]
Hunt, R [1 ]
Peterson, JB [1 ]
机构
[1] CARNEGIE MELLON UNIV,DEPT PHYS,PITTSBURGH,PA 15213
关键词
D O I
10.1063/1.120028
中图分类号
O59 [应用物理学];
学科分类号
摘要
We present the design of a novel bolometer intended for measurement of radiation within a waveguide. The thermal link in the bolometer is a low-thermal conductance micromachined beam. Power is coupled from an antenna to a resistive termination at the center of the beam. The optimization of the design for an astronomical measurement leads to an operating temperature of 0.48 K, accessible with a He-3 refrigerator, Measurements on the antenna absorber in a waveguide show an average absorption of 94% from 33 to 50 GHz. (C) 1997 American Institute of Physics.
引用
收藏
页码:2361 / 2363
页数:3
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