Compact Filters Based on Stub-Loaded Parallel-Coupled Resonators

被引:0
|
作者
Garcia, M. [1 ]
Pistono, E. [1 ]
Maouche, H. [1 ]
Ferrari, P. [1 ]
机构
[1] Univ Savoy, CNRS, UMR 5130, Grenoble INP,UJF,IMEP LAHC, BP 257, F-38016 Grenoble 1, France
关键词
D O I
暂无
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
Results of compact bandpass filters based on stubloaded parallel-coupled resonators are presented in this paper. The working frequency corresponds to the low UHF band. These resonators behave like short-circuited quarter wavelength resonators, but lead to smaller lengths, allowing obtaining very compact filters in a planar technology, without adding lumped components. Such filters seem to be efficient candidates to achieve selective and compact size filters, with high flexibility and simple design rules. Measurement results carried out on a single resonator validate the background theory. Next, two-pole and three-pole filters are designed. Measurements and simulations are in good agreement. Fractional bandwidths from 3.3 % to 6.7 % are obtained, with 3.65 dB and 2.8 dB insertion loss, respectively.
引用
收藏
页码:304 / 307
页数:4
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