Flux-bias stabilization scheme for a radio-frequency amplifier based on a superconducting quantum interference device

被引：6
|
作者：
Mück, M
Clarke, J
机构：
[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2001年 / 72卷 / 09期
关键词：
D O I：
10.1063/1.1389498
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A magnetic flux stabilization scheme involving a low-frequency flux-locked loop has been developed to regulate the gain of a radio-frequency amplifier based on a superconducting quantum inteference device (SQUID). The flux-locked loop largely eliminates drifts in the gain arising from drifts in the flux bias. Tests on a microstrip SQUID amplifier operating at 777 MHz inside a superconducting shield show that the peak-to-peak drift in the gain is no more than 0.3 dB/day. (C) 2001 American Institute of Physics.
引用
收藏
页码：3691 / 3693
页数：3
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