A Miniaturized Low Pass Filter with Extended Stopband and High Passband Selectivity

IF 0.5 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Radioengineering Pub Date : 2023-09-01 DOI:10.13164/re.2023.0408

P. Singh, M. Tomar, Parihar

引用次数: 0

Abstract

. In this work, an ultra-wide stopband low pass filter (LPF) with high selectivity is proposed using coupled stepped impedance resonators (SIRs), open shunt stubs and circular slots in the ground plane. The proposed LPF has been modeled using a lumped equivalent circuit which is extracted from the EM model. The design has been validated through the simulation and experimental results. The fabricated prototype has a 3-dB cutoff frequency (f c ) of 2.44 GHz and an ultra-wide stopband extended up to 20.5 GHz (8.4 f c ) with an attenuation level > 20 dB. The transition bandwidth (from 3 dB to 20 dB) is 0.09 GHz and the roll-off rate is 225 dB / GHz (reference to 30 dB). The passband insertion loss is 0.35 dB at 1.22 GHz and the normalized circuit size of the filter is 0.045.

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一种具有扩展阻带和高通带选择性的小型低通滤波器

．在这项工作中，提出了一种具有高选择性的超宽阻带低通滤波器(LPF)，该滤波器采用耦合阶跃阻抗谐振器(SIRs)、开路分流存根和接地面的圆形槽。所提出的LPF采用从EM模型中提取的集总等效电路进行建模。通过仿真和实验结果验证了设计的正确性。制作的原型具有2.44 GHz的3db截止频率(f c)和扩展至20.5 GHz (8.4 f c)的超宽阻带，衰减水平为bbb20 dB。转换带宽(从3db到20db)为0.09 GHz，滚降速率为225 dB / GHz(参考30db)。在1.22 GHz时通带插入损耗为0.35 dB，滤波器的归一化电路尺寸为0.045。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Radioengineering 工程技术-工程：电子与电气

CiteScore

2.00

自引率

9.10%

发文量

审稿时长

5.7 months

期刊介绍： Since 1992, the Radioengineering Journal has been publishing original scientific and engineering papers from the area of wireless communication and application of wireless technologies. The submitted papers are expected to deal with electromagnetics (antennas, propagation, microwaves), signals, circuits, optics and related fields. Each issue of the Radioengineering Journal is started by a feature article. Feature articles are organized by members of the Editorial Board to present the latest development in the selected areas of radio engineering. The Radioengineering Journal makes a maximum effort to publish submitted papers as quickly as possible. The first round of reviews should be completed within two months. Then, authors are expected to improve their manuscript within one month. If substantial changes are recommended and further reviews are requested by the reviewers, the publication time is prolonged.