Novel 3-dB tandem coupler with wide bandwidth by using 4 short stubs

被引：0

作者：

Inaba T. ^{[1
]}

Hayashi H. ^{[1
]}

机构：

[1] Sophia University, Tokyo

来源：

Progress in Electromagnetics Research Letters | 2020年 / 93卷

关键词：

Bandwidth;

D O I：

10.2528/pierl20070801

中图分类号：

学科分类号：

摘要：

A new wideband 3-dB tandem coupler is presented that has wide bandwidth using four 90◦ short stubs. The proposed tandem coupler does not require a higher transmission line impedance or a narrower coupling gap than conventional couplers. Measurements of the fabricated tandem coupler operated at a center frequency of f0 = 1 GHz are presented as verification of the design concept. The fractional bandwidth (FBW) at which the return loss was suppressed to a level better than 15 dB was 71%. Theoretical calculations and measurements of the tandem coupler were in good agreement. © 2020, Electromagnetics Academy. All rights reserved.

引用

页码：131 / 136

页数：5