Q-factor measurements of open resonators in the millimeter-wave range including coupling losses

被引：4
|
作者：
Faby, G [1 ]
Schünemann, K [1 ]
机构：
[1] Tech Univ Hamburg Harburg, D-21071 Hamburg, Germany
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1999年 / 48卷 / 03期
关键词：
circuit modeling; electromagnetic coupling; lossy circuits; millimeter wave measurements; optical resonators; Q measurement; scattering parameters;
D O I：
10.1109/19.772197
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 unloaded quality factor as well as the coupling coefficient of open resonators are determined by evaluating measured complex reflection coefficients. The cavity is described by an equivalent circuit, the parameters of this circuit are calculated by means of a least-square fit of the simulated to the measured reflection coefficients. The solution is obtained using the Householder-algorithm, which promises very fast and stable computation. This approach is capable of evaluating quality-factor measurements for each type of resonator, even with losses in the coupling aperture. Its validity is illustrated by measurements in the cm- and mm-wave range.
引用
收藏
页码：688 / 692
页数：5
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