An ac method for the precise measurement of Q-factor and resonance frequency of a microwave cavity

被引：32
|
作者：
Nebendahl, B
Peligrad, DN
Pozek, M
Dulcic, A
Mehring, M
机构：
[1] Univ Stuttgart, Inst Phys 2, D-70550 Stuttgart, Germany
[2] Univ Zagreb, Fac Sci, Dept Phys, HR-10002 Zagreb, Croatia
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2001年 / 72卷 / 03期
关键词：
D O I：
10.1063/1.1336823
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We have developed a new and fast method for the determination of the complex frequency shift of a microwave resonant cavity. The method is based on frequency modulation of the microwave source around the cavity resonance and detection of the 2nd and 4th harmonic of the modulation frequency. With this procedure the static measurement of the response amplitude is not necessary and all the data are obtained through a single ac channel. The optimal frequency deviation is shown to be comparable to the cavity resonance width. (C) 2001 American Institute of Physics.
引用
收藏
页码：1876 / 1881
页数：6
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