volume | PIER Journals

2011-02-17

A Novel Dual-Band Bandpass Filter Using Generalized Trisection Stepped Impedance Resonator with Improved Out-of-Band Performance

Xiaofeng Sun,

Dr. Xiaofeng Sun

School of Electrical and Electronic Engineering

Nanyang Technological University

Singapore

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Eng Leong Tan

Dr. Eng Leong Tan

School of Electrical and Electronic Engineering

Nanyang Technological University

Singapore

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Progress In Electromagnetics Research Letters, Vol. 21, 31-40, 2011

doi:10.2528/PIERL10120606

Abstract

This paper presents the synthesis of a novel dual-band bandpass filter with improved out-of-band performance. The proposed circuit is constructed by cascading a dual-band filter using trisection stepped impedance resonators (SIRs) and an L-C ladder lowpass filter using open-circuited stubs. The dual-band trisection SIR can provide the desired dual-band response, and the lowpass filter can improve the out-of band performance by suppressing the harmonics and spurious responses. The proposed filter has been fabricated and measured. Simulation and measurement results are found to be in good agreement.

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Xiaofeng Sun, and Eng Leong Tan, "A Novel Dual-Band Bandpass Filter Using Generalized Trisection Stepped Impedance Resonator with Improved Out-of-Band Performance," Progress In Electromagnetics Research Letters, Vol. 21, 31-40, 2011.
doi:10.2528/PIERL10120606

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