Two-pole digitally tunable evanescent-mode waveguide narrow-band filter with radio frequency micro-electromechanical systems switches

被引：2

作者：

Amadjikpe, A. L. ^{[1
]}

Chung, D. J. ^{[1
]}

Courreges, S. ^{[2
]}

Eudeline, P. ^{[3
]}

Ziaei, A. ^{[3
]}

Papapolymerou, J. ^{[1
]}

机构：

[1] Georgia Inst Technol, Atlanta, GA 30332 USA

[2] XLIM Res Inst, MINACOM Grp, Limoges, France

[3] Thales Air Syst SA, Thalesgrp, Rungis, France

来源：

IET MICROWAVES ANTENNAS & PROPAGATION | 2011年 / 5卷 / 04期

关键词：

Poles;

D O I：

10.1049/iet-map.2009.0621

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：

A two-pole evanescent-mode waveguide narrow-band filter digitally tunable with micro-electromechanical system (MEMS) switches is demonstrated. A design approach for a prescribed frequency shift and tuning range is elaborated using a simple equivalent circuit model. The validity of the proposed frequency tuning concept is proved through simulation and measurement of a prototype. The measured tunable filter achieves three resonant states around 3 GHz, with an average frequency tuning of 20 MHz between each state, a fractional 1-dB bandwidth of 1.2-1.5% and better than 2.1 dB insertion loss. The measured unloaded quality factor (Q) of the filter varies from 315 to 460 over the frequency tuning range.

引用

页码：393 / 401

页数：9