Compact Wideband Bandpass Filter With Sharp Selectivity Using Short-Ended Parallel-Coupled-Line-Stub Resonator

被引：0
|
作者：
Wu, Xiaohu [1 ]
Ge, Junxiang [1 ]
机构：
[1] Nanjing Univ Informat Sci & Technol, Sch Elect & Informat Engn, Nanjing, Jiangsu, Peoples R China
来源：
2015 ASIA-PACIFIC MICROWAVE CONFERENCE (APMC), VOLS 1-3 | 2015年
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：
A compact wideband bandpass filter is presented in this paper. By loading the short-ended parallel-coupled-line-stub (PCLS) at the center of the uniform-impedance half-wavelength line, the tri-mode resonator is realized. Two transmission zeros, due to the PCLS, are generated at the lower and upper cut-off frequencies and sharp selectivity can be obtained. The short-ended PCLS resonator is theoretically analyzed and applied to design a bandpass filter with fractional bandwidths 45%, good in-band return loss (>12.2dB) and low insertion loss (0.9dB at the center frequency 4.0GHz).
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页数：3
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