A Continuously Tunable Bandpass Filter Using Distilled Water Based on Multiple-Mode Resonator

被引：5

作者：

Guo, Jian-Hui ^{[1
,2
]}

Wong, Sai-Wai ^{[1
]}

Lin, Jing-yu ^{[3
]}

Li, Yin ^{[1
]}

Zhang, Long ^{[1
]}

Zhu, Lei ^{[4
]}

Xie, Ze-Ming ^{[2
]}

He, Yejun ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Elect & Informat Engn, Shenzhen 518060, Peoples R China

[2] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Peoples R China

[3] Univ Technol Sydney, Sch Elect & Data Engn, Ultimo, NSW 2007, Australia

[4] Univ Macau, Fac Sci & Technol, Dept Elect & Comp Engn, Macau 999078, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2020年 / 30卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Band-pass filters; Electron tubes; Resonant frequency; Insertion loss; Tunneling magnetoresistance; Frequency measurement; Loss measurement; Distilled water; low insertion loss; triple-mode resonator (TMR); tunable bandpass filter (BPF);

D O I：

10.1109/LMWC.2020.2982806

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：

In this letter, a continuously tunable bandpass filter (BPF) with low insertion loss using distilled water based on the stripline triple-mode resonator (TMR) is first presented. The configurability of proposed BPF is achieved by using six polytetrafluoroethylene (PTFE) tubes located above the surface of the TMR circuit. These tubes are filled with distilled water. By adjusting the amount of distilled water inside these tubes, the equivalent electrical length of the transmission line changes, which can change the resonant frequency of the TMR. It is demonstrated in simulated and measured results that the center frequency tuning of the proposed BPF is ranged from 1.06 to 1.29 GHz with a fractional bandwidth (FBW) of 16.5%-19.2% and the measured insertion loss is varied within 1-0.4 dB. The measured results are highly consistent with the simulated results.

引用

页码：477 / 480

页数：4

共 11 条

[1] Microfluidically Tunable Microstrip Filters [J].