Design optimization and implementation of bandpass filters with normally fed microstrip resonators loaded by high-permittivity dielectric

被引：25
|
作者：
Hennings, A [1 ]
Semouchkina, E
Baker, A
Semouchkin, G
机构：
[1] Tech Univ Rheinisch Westfael Tech Hochsch, Inst Werkstoffe & Elektrotech, D-52074 Aachen, Germany
[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2006年 / 54卷 / 03期
基金：
美国国家科学基金会;
关键词：
finite-difference time-domain method (FDTD); low-temperature co-fired ceramic (LTCC); microstrip filters; resonance; transmission zeroes;
D O I：
10.1109/TMTT.2006.869709
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：
Different approaches for designing bandpass filters with transmission zeroes are investigated by using the transmission-line theory and the finite-difference time-domain method. The filters are composed of capacitively coupled uniform impedance microstrip resonators, stepped-impedance microstrip resonators, and tapped feed lines. Different design modifications are discussed and, as a result, a design with double-coupled resonators is proposed. Based on this structure, a miniaturized filter capacitively loaded by high-permittivity dielectric inclusions and fabricated by using low-temperature co-fired ceramic (LTCC) technology is presented. The measured and simulated S-parameter spectra of the LTCC-filter are in good agreement.
引用
收藏
页码：1253 / 1261
页数：9
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