A Full-Passband Linear-Phase Band-Pass Filter Equalized With Negative Group Delay Circuits

被引：27

作者：

Shao, Te ^{[1
]}

Wang, Zhongbao ^{[1
,2
]}

Fang, Shaojun ^{[1
]}

Liu, Hongmei ^{[1
]}

Chen, Zhi Ning ^{[2
]}

机构：

[1] Dalian Maritime Univ, Sch Informat Sci & Technol, Dalian 116026, Peoples R China

[2] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117583, Singapore

来源：

IEEE ACCESS | 2020年 / 8卷

基金：

中国国家自然科学基金;

关键词：

Band-pass filter; full-passband linear phase; group delay equalization; negative group delay circuits; RESONATORS; AMPLIFIER; DESIGN;

D O I：

10.1109/ACCESS.2020.2977100

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A full-passband linear-phase band-pass filter (BPF) equalized with negative group delay circuits (NGDC) is proposed. The NGDCs are utilized to suppress the salient group delay at the edge of the passband of the traditional BPF for achieving the full-passband linear-phase characteristic. To obtain input- and output-port impedance matching, two BPFs loading NGDCs are center symmetrically configured by Wilkinson power dividers. To verify the design concept, a 3-order full-passband linear-phase BPF is designed and fabricated. From the measured results, the GD fluctuation is reduced by 74% from 0.57 to 0.15 ns, return loss is better than 10 dB, and the insertion loss variation is less than 3 dB within the frequency range from 2.142 to 2.804 GHz. The proposed BPF achieves a flat group delay in the whole passband and realizes the full-passband linear-phase characteristic.

引用

页码：43336 / 43343

页数：8

共 23 条

[21] A Miniaturised Negative Group Delay Triple Pass Band Filter Using Half Wavelength Meander Step Impedance Resonator
Neogi, Anirban
Panda, Jyoti R.
PROGRESS IN ELECTROMAGNETICS RESEARCH LETTERS, 2021, 101 : 55 - 62
[22] On broadband, linear-phase, flat group delay, all-pole, low-pass filters for high-speed, data communication
Sanduleanu, Mihai
Cracan, Dan
RESULTS IN ENGINEERING, 2025, 25
[23] Negative Group Delay Prototype Filter Based on the Reciprocal Transfer Function of a Low-Pass Butterworth Filter Capped at Finite Out-of-Band Gain
Kandic M.
Bridges G.E.
Progress In Electromagnetics Research B, 2024, 106 : 17 - 38

← 1 2 3 →