Simple Coupled-Line Tunable Bandpass Filter With Wide Tuning Range

被引：7

作者：

Chen, Xiaoxiao ^{[1
]}

Wu, Yongle ^{[1
]}

Yang, Yuhao ^{[1
]}

Wang, Weimin ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, Sch Elect Engn, Beijing 100876, Peoples R China

来源：

IEEE ACCESS | 2020年 / 8卷

基金：

北京市自然科学基金; 中国国家自然科学基金;

关键词：

Bandpass filter; coupled line; tunable filter; wide tuning range; PHASE-SHIFTER; HIGH-SELECTIVITY; SHORT-SECTION; BANDWIDTH; DESIGN; IMPEDANCE; TRANSFORMER; FREQUENCY;

D O I：

10.1109/ACCESS.2020.2991163

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, a tunable bandpass filter using coupled line with a wide tuning range is proposed. The proposed filter has a simple structure which is composed of a coupled-line section and two pairs of varactors. Meanwhile, simultaneously tuning on bandwidth and center frequency are introduced by varactors. The tunability is mainly realized by varactors connected to one end of the coupled line and varactors between ports and coupled line provide an impedance matching. A theoretical analysis is presented to illustrate the tunability by using even- and odd-mode theory. Additionally, the detailed effect of the two types of varactors is researched, respectively. To verify the concept, a prototype is designed, fabricated, and measured. The transmission zero exhibited in measurement is introduced by bias circuits. The measured results show that the tunable bandpass filter achieves a tunable center frequency of 0.494-1.257 GHz (87.15 & x0025;) and a 3-dB bandwidth of 0.282-0.943 GHz (334 & x0025;).

引用

页码：82286 / 82293

页数：8

共 50 条

[21] A wide rejection bandwidth bandpass filter with stepped-impedance hairpin resonator and interlaced coupled-line
Her, Man-Long
Hsu, Ming-Wei
Wu, Ying-De
Ko, Wen
Hsu, Chou-Jung
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 2007, 49 (03) : 542 - 545
[22] Fully Tunable Bandpass Filter With Wide Bandwidth Tuning Range and Switchable Single/Dual Band
Li, Shuang
Li, Shengxian
Yuan, Jianrong
Liu, Jun
Shi, Man
IEEE ACCESS, 2024, 12 : 36577 - 36585
[23] Tunable bandpass filter with wide tuning range of center frequency and bandwidth based on circular SIW
Wang, Xian
Zhang, Dewei
Liu, Qing
Deng, Hailin
Lv, Dalong
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS, 2020, 114
[24] Compact bandpass filter design using folded coupled-line resonators
Wang, W
Fu, JS
Lu, YL
Xiong, YZ
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 2005, 45 (01) : 32 - 35
[25] Compact microstrip coupled-line bandpass filter with four transmission zeros
Wu, CH
Lin, YS
Wang, CH
Chen, CH
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2005, 15 (09) : 579 - 581
[26] A microstrip bandpass filter using a symmetrical parallel coupled-line structure
Jantree, J
Kerdsumang, S
Akkaraekthalin, P
APCC 2003: 9TH ASIA-PACIFIC CONFERENCE ON COMMUNICATION, VOLS 1-3, PROCEEDINGS, 2003, : 784 - 787
[27] Inductively Compensated Coupled-Line Resonator and Its Bandpass Filter Applications
Phromloungsri, Ravee
Chongcheawchamnan, Mitchai
Sonasang, Somchat
PRZEGLAD ELEKTROTECHNICZNY, 2023, 99 (10): : 55 - 59
[28] ACTIVE RF BANDPASS FILTER WITH WIDE FREQUENCY TUNING RANGE
Andriesei, Cristian
Goras, Liviu
Delacressoniere, Bruno
CAS: 2008 INTERNATIONAL SEMICONDUCTOR CONFERENCE, PROCEEDINGS, 2008, : 397 - +
[29] Compact reconfigurable bandpass filter with wide frequency tuning range
Zhang, Bo
Song, Kaijun
Xu, Boqiang
Luo, Zihang
Hu, Bingkun
ELECTROMAGNETICS, 2019, 39 (02) : 89 - 98
[30] Compact tunable bandpass filter with wide tuning range of centre frequency and bandwidth using coupled lines and short-ended stubs
Zhu, He
Abbosh, Amin
IET MICROWAVES ANTENNAS & PROPAGATION, 2016, 10 (08) : 863 - 870

← 1 2 3 4 5 →