Full-wave analysis of fundamental modes of a multicoupled strip line with ferroelectric film

被引：0
|
作者：
I. B. Vendik
O. G. Vendik
M. S. Gashinova
A. N. Deleniv
机构：
[1] St. Petersburg State Electrotechnical University,
[2] Chalmers University of Technology,undefined
来源：
Technical Physics Letters | 2005年 / 31卷
关键词：
Microwave; Phase Shifter; Fundamental Mode; Control Voltage; Spectral Domain;
D O I：
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中图分类号：
学科分类号：
摘要：
The properties of a multicoupled microstrip line (MSL) with a thin control ferroelectric layer have been analyzed in terms of a full-wave model based on the method of moments in spectral domain. The Q values for all fundamental modes and their contributions to MSL losses are determined. It is established that various fundamental modes in multicoupled MSLs are characterized by significantly different Q values. The proposed method has been applied to the analysis of characteristics of an MSL-based ferroelectric microwave phase shifter. The figure of merit F of the phase shifter has been calculated for each fundamental mode. The results of analysis lead to a conclusion that, by exciting a fixed mode characterized by the maximum Q value, it is possible to obtain an MSL-based phase shifter possessing the optimum F at a minimum necessary level of the control voltage.
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页码：68 / 71
页数：3
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