Microstrip superconducting quantum interference device radio-frequency amplifier: Scattering parameters and input coupling

被引：23

作者：

Kinion, D. ^{[1
]}

Clarke, John

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 17期

关键词：

D O I：

10.1063/1.2902173

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The forward scattering parameters of an amplifier based on a dc superconducting quantum interference device are directly measured at 4.2 K as functions of the applied magnetic flux. These parameters are equivalent to the real and imaginary components of the input impedance and forward gain of the amplifier. The results can be described using an equivalent circuit model of the fundamental resonance of the microstrip resonator which forms the input of the amplifier. The circuit model is used to determine the series capacitance required for critical coupling of the microstrip to the input circuit. (C) 2008 American Institute of Physics.

引用

页数：3

共 12 条

[1] Microwave cavity searches for dark-matter axions [J].