Ultra-wideband bandpass filter using multi-stub-loaded ring resonator

被引：24
|
作者：
Lin, Lei [1 ]
Yang, Shuai [1 ]
Sun, Shou-Jia [1 ]
Wu, Bian [1 ]
Liang, Chang-Hong [1 ]
机构：
[1] Xidian Univ, Natl Lab Sci & Technol Antennas & Microwaves, Xian 710071, Shaanxi, Peoples R China
来源：
ELECTRONICS LETTERS | 2014年 / 50卷 / 17期
基金：
中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词：
MODE RESONATOR;
D O I：
10.1049/el.2014.1256
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 ultra-wideband (UWB) bandpass filter (BPF) using a multi-stub-loaded ring resonator is presented. The resonant frequencies of the proposed resonator can be tuned freely by changing the lengths of the corresponding stubs. By utilising the proposed multimode resonator, four resonant frequencies are evenly allocated in the UWB range and two transmission zeros are introduced at the lower and upper stopbands. Parallel-coupled feedlines with defected ground structures were utilised to provide sufficient external coupling. To validate the design theory, an UWB BPF operating in the frequency range from 3.1 to 10.6 GHz was designed, analysed and fabricated. Measurements showed good agreement with simulations.
引用
收藏
页码：1218 / 1219
页数：2
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