Design of Tunable Coaxial Bandpass Filter Based on Embedded Stepped Impedance Resonators

被引：1
|
作者：
Zhou, Xubin [1 ]
Huo, Junjie [1 ]
机构：
[1] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Peoples R China
来源：
IEEE ACCESS | 2023年 / 11卷
关键词：
Coaxial resonator; constant bandwidth; wide tuning range; tunable filter; CONSTANT ABSOLUTE BANDWIDTH;
D O I：
10.1109/ACCESS.2023.3284462
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper describes a method for designing tunable coaxial bandpass filters based on an inserted coaxial stepped impedance resonator (SIR). The miniaturization of the coaxial resonator is realized by the shape of the stepped impedance structure. In addition, an extended tuning range can be achieved by utilizing the SIR. A third-order tunable bandpass filter with constant absolute bandwidth is designed and fabricated for verification. The fabricated filter exhibits a wide tuning range from 2.13 GHz to 3.54 GHz (52.4%), over which the absolute bandwidth (ABW) varies within 97.5 +/- 5.5 MHz (+/- 5.6%).
引用
收藏
页码：58947 / 58952
页数：6
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