Dual-mode reconfigurable filter with asymmetrical transmission zeros and center frequency control

被引：28

作者：

Lugo, Cesar ^{[1
]}

Papapolymerou, John ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2006年 / 16卷 / 09期

基金：

美国国家科学基金会;

关键词：

degenerate modes; dual-mode filter; dual-mode resonator; square patch filter;

D O I：

10.1109/LMWC.2006.880707

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 reconfigurable bandpass filter with asymmetrical responses is demonstrated using a dual-mode microstrip resonator. The proposed topology introduces several fixed and switchable perturbations to control the center frequency and the location of the transmission zeros of the filter. The tuning mechanism consists of capacitively loading the edges of a modified square patch resonator, in order to manipulate the current distribution of the degenerate modes. This operation results in asymmetrical responses with a center frequency tuning ratio of 10% at X band, and angular transmission zero displacement of Delta w(z) = 3.5 rad/s or greater in both a lower and higher side of the passband.

引用

页码：499 / 501

页数：3

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