Compact frequency and bandwidth tunable stopband filters using split ring resonators and varactors coupled transmission line

被引：4
作者：
Kim, Cheolbok [1 ]
Cheng, Xiaoyu [1 ]
Senior, David E. [1 ]
Yoon, Yong-Kyu [1 ]
机构：
[1] Univ Florida, Dept Elect & Comp Engn, Gainesville, FL 32611 USA
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2012年 / 66卷 / 11期
基金：
美国国家科学基金会;
关键词：
Split ring resonator (SRR); Metamaterial; Varactor; Tunable filter; Wide bandwidth;
D O I：
10.1016/j.aeue.2012.03.004
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：
Two highly compact tunable stopband filters using microstrip transmission lines coupled with split ring resonators (SRRs) and varactor diodes are presented. Frequency or bandwidth tuning capability of each device is demonstrated. The frequency tunable filter, realized by a single stage, shows a wide tuning range of 19.8% with a maximum bandwidth of 5% and an insertion loss of approximately 20 dB at 4 GHz. The bandwidth tunable filter, realized by double stages, shows a 10-dB bandwidth of 19-34% with a biasing voltage of 0-10 V. The implemented frequency tuning and bandwidth tuning devices show a significant area reduction of 60.1% and 53.5%, respectively, in comparison with a similar frequency or bandwidth tunable structure presented by others. Equivalent circuit models are presented. The measured S-parameters are in good agreement with simulated ones. (c) 2012 Elsevier GmbH. All rights reserved.
引用
收藏
页码：865 / 870
页数：6
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