A COMPACT LOW-PASS FILTER WITH ULTRABROAD STOPBAND CHARACTERISTICS

被引：6
|
作者：
Lan, Siang-Wen [1 ]
Weng, Min-Hang
Chang, Shoou-Jinn [1 ]
Hung, Cheng-Yuan
机构：
[1] Natl Cheng Kung Univ, Dept Elect Engn, Inst Microelect, Tainan 70101, Taiwan
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2015年 / 57卷 / 12期
关键词：
low-pass filter; rectangular stub resonator; imaginary admittance; MICROSTRIP LOWPASS FILTER;
D O I：
10.1002/mop.29446
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 low-pass filter (LPF) with ultrabroad stopband characteristic is presented in this article. This filter mainly consists of a rectangular stub resonator and cumulative open-circuited stubs, providing multiple transmission zeros to form a wide stopband region. Further, two open stub loads are simply adopted to improve the band selectivity. This fabricated LPF exhibits a 3 dB cutoff frequency (f(c)) at 1.74 GHz with an average low insertion loss of 0.25 dB and a broad stopband region from 2.6 to 22.8 GHz (10.8f(c)) under a high rejection level of 20 dB. (C) 2015 Wiley Periodicals, Inc.
引用
收藏
页码：2800 / 2803
页数：5
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