Lumped-element isolator with lower symmetrical configuration of three windings

被引：3

作者：

Takeda, S ^{[1
]}

Mikami, H ^{[1
]}

Sugiyama, Y ^{[1
]}

机构：

[1] Hitachi Metals Ltd, Adv Elect Res Lab, Kumagaya, Saitama, Japan

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2004年 / 52卷 / 12期

关键词：

angle dependence; circulator; isolator; lumped element; nonreciprocal devices; symmetry; three windings;

D O I：

10.1109/TMTT.2004.838304

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：

Ideal isolator conditions are derived using circuit analysis in a lumped-element isolator with three windings at angles of theta and phi. The angle theta can be arbitrary; however, phi is restricted to lie on the bisector of cross-angle theta or the supplementary angle of theta. We found that the isolator with theta = phi = 60 [deg] behaves the same as the one with conventional structure with theta = phi = 120 [deg]. However, the former has a 0degrees phase shift and the latter a 180degrees phase shift between the input and output. The theoretical prediction was experimentally confirmed with an 800-MHz-band isolator.

引用

页码：2697 / 2703

页数：7