A 5th-Order Constant Bandwidth Tunable Bandpass Filter With Two Cascaded Trisection Structures

被引：14

作者：

Xiang, Qianyin ^{[1
]}

Sun, Hongchun ^{[1
]}

Fu, Mingye ^{[1
]}

Jin, Qiuyan ^{[1
]}

Feng, Quanyuan ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 611756, Peoples R China

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2023年 / 70卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Tunable filter; cascaded trisection; constant bandwidth;

D O I：

10.1109/TCSII.2022.3208601

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 novel 5(th)-order cross-coupled tunable bandpass filter based on full-wavelength tunable resonator with four independent coupling regions, including two electric and two magnetic coupling regions is proposed. The slop of the coupling coefficients versus the resonant frequency can be pre-defined to meet the requirement of tunable bandpass filter with constant bandwidth. The 5th-order constant bandwidth cross-coupled bandpass filter is with two cascaded trisection (CT) structures, including one all electric type CT cell and one all magnetic type CT cell, and two CT cells share a common resonator to reduce the size. Therefore, two transmission zeros are generated besides the passband for improving the frequency selectivity. The measurement shows that, the central frequency can be tuned from 1.48 GHz to 1.88 GHz with a -3 dB bandwidth of 92 +/- 1.1 MHz, and the -20dB/-3dB rectangle factor is 1.66 similar to 1.76.

引用

页码：126 / 130

页数：5

共 21 条

[1] Reconfigurable Planar Capacitive Coupling in Substrate-Integrated Coaxial-Cavity Filters [J].

Anand, Akash ;

Liu, Xiaoguang .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2016, 64 (08) :2548-2560

[2] Metacognition and the Next Generation of Cognitive Radio Engines [J].

Asadi, Hamed ;

Volos, Haris ;

Marefat, Michael M. ;

Bose, Tamal .

IEEE COMMUNICATIONS MAGAZINE, 2016, 54 (01) :76-82

[3] Tunable Reflectionless Filter With Independently Controllable Dual Passbands and Absorbed Harmonic Signals [J].

Cao, Zilan ;

Bi, Xiaojun ;

Xu, Qinfen .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2021, 68 (11) :3416-3420

[4] CASCADED TRIPLET FILTER USING MIXED ELECTRIC AND MAGNETIC COUPLING STRUCTURE WITH WIDE STOPBAND PERFORMANCE [J].

Chen, Fu-Chang ;

Hu, Hao-Tao- ;

Qiu, Jie-Ming ;

Chu, Qing-Xin .

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 2014, 56 (12) :2937-2940

[5] Corrugated Microstrip Coupled Lines for Constant Absolute Bandwidth Tunable Filters [J].

El-Tanani, Mohammed A. ;

Rebeiz, Gabriel M. .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2010, 58 (04) :956-963

[6] Compact Tunable Filtering Power Divider With Constant Absolute Bandwidth [J].

Gao, Li ;

Zhang, Xiu Yin ;

Xue, Quan .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2015, 63 (10) :3505-3513

[7] Substrate Integrated Waveguide Quasi-Elliptic Filters With Controllable Electric and Magnetic Mixed Coupling [J].

Gong, Ke ;

Hong, Wei ;

Zhang, Yan ;

Chen, Peng ;

You, Chang Jiang .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2012, 60 (10) :3071-3078

[8]

Hong J, 2011, MICROSTRIP FILTERS R, V2nd, P222

[9] Tunable Balanced Bandpass Filter With Constant Bandwidth and High Common-Mode Suppression [J].

Li, Yuan Chun ;

Xue, Quan .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2011, 59 (10) :2452-2460

[10]

Lu D., 2019, IEEE T MICROW THEORY, V67, P1

← 1 2 3 →