Compact Frequency and Bandwidth Tunable Bandpass-Bandstop Microstrip Filter

被引：19

作者：

Kingsly, Saffrine ^{[1
]}

Kanagasabai, Malathi ^{[1
]}

Alsath, Mohammed Gulam Nabi ^{[2
]}

Shrivastav, Arun Kumar ^{[3
]}

Subbaraj, Sangeetha ^{[1
]}

Selvam, Yogeshwari Panneer ^{[1
]}

Sivasamy, Ramprabhu ^{[2
]}

Ramanarao, Yeragudipati Venkata ^{[1
]}

机构：

[1] Anna Univ, Coll Engn, Madras 600025, Tamil Nadu, India

[2] Sri Sivasubramaniya Nadar Coll Engn, Dept Elect & Commun Engn, Madras 603110, Tamil Nadu, India

[3] Saveetha Engn Coll, Dept Elect & Commun Engn, Madras 602105, Tamil Nadu, India

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2018年 / 28卷 / 09期

关键词：

Bandpass (BP) filter; bandstop (BS) filter; bandwidth reconfiguration; frequency reconfiguration; DUAL-MODE RESONATOR;

D O I：

10.1109/LMWC.2018.2858005

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：

This letter presents the design and implementation of a compact microstrip filter with frequency and bandwidth (BW) reconfiguration. The proposed filter consists of a transmission line coupled with a U-shaped microstrip line resonator. Varactor diodes are deployed at specific locations and are tuned to achieve BW and frequency reconfiguration from 0.8 to 1.5 GHz. The transition from the bandpass mode to the bandstop mode is achieved by reconfiguring the transmission zeros simultaneously. The filter percentage lower passband edge tuning and 17.33% higher passband edge tuning. The proposed filter has simple geometry, low profile, and offers a higher level of operational flexibility in the designed frequency range. The filter is tuned with the help of simple actuators requiring simple bias circuitry. The prototype filter is fabricated, and the simulation results are validated using the experimental measurements.

引用

页码：786 / 788

页数：3

共 6 条

[1] A Compact Reconfigurable Microstrip Dual-Band Filter Using Varactor-Tuned Stub-Loaded Stepped-Impedance Resonators [J].