Compact microstrip low-pass filter with sharp rejection

Wen Hua Tu; Kai Chang

doi:10.1109/LMWC.2005.850479

Compact microstrip low-pass filter with sharp rejection

Wen Hua Tu, Kai Chang

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

102 Scopus citations

Abstract

This letter presents a compact multisection sharp-rejection microstrip low-pass filter. Each section is consisted of a microstrip line section and an interdigital capacitor. The analysis for optimizing the attenuation poles by adjusting the finger number, and the width and length of the microstrip line section is presented. The cascaded four-section low-pass filter has a return loss of better than 17 dB and an insertion loss of less than 0.7 dB from dc to 1.6 GHz. The rejection is better than 20 dB from 2.1 to 7.5 GHz.

Original language	English
Pages (from-to)	404-406
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	15
Issue number	6
DOIs	https://doi.org/10.1109/LMWC.2005.850479
State	Published - Jun 2005

Keywords

Interdigital capacitor
Low-pass filter
Sharp rejection

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10.1109/LMWC.2005.850479

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AB - This letter presents a compact multisection sharp-rejection microstrip low-pass filter. Each section is consisted of a microstrip line section and an interdigital capacitor. The analysis for optimizing the attenuation poles by adjusting the finger number, and the width and length of the microstrip line section is presented. The cascaded four-section low-pass filter has a return loss of better than 17 dB and an insertion loss of less than 0.7 dB from dc to 1.6 GHz. The rejection is better than 20 dB from 2.1 to 7.5 GHz.

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Compact microstrip low-pass filter with sharp rejection

Abstract

Keywords

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