Forked stepped impedance resonator bandpass filter with harmonic suppression

Zhen Mao Rao; Tzu Jung Wong; Min Hua Ho

doi:10.1109/APMC.2005.1606275

Forked stepped impedance resonator bandpass filter with harmonic suppression

Zhen Mao Rao, Tzu Jung Wong, Min Hua Ho

Graduate Institute of Communication Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this paper, a novel two-stage forked stepped impedance resonator (FSIR) bandpass filter is presented. The FSIR originated from an SIR has its both open ends split as a fork structure. A tunable transmission zero, which is used to suppress the second harmonic of the resonator, is created from the even- and odd-mode coupling effect of the two FSIR structures. The tape-lines feed together with the asymmetric feed orientation are adopted in this filter design to provide two additional zeros, each residing on either side of the passband edges, to improve the filter's frequency selectivity. An experiment is conducted and a good agreement between the measurement and the simulation is observed to verify the design.

Original language	English
Title of host publication	APMC 2005
Subtitle of host publication	Asia-Pacific Microwave Conference Proceedings 2005
DOIs	https://doi.org/10.1109/APMC.2005.1606275
Publication status	Published - 2005 Dec 1
Event	APMC 2005: Asia-Pacific Microwave Conference 2005 - Suzhou, China Duration: 2005 Dec 4 → 2005 Dec 7

Publication series

Name	Asia-Pacific Microwave Conference Proceedings, APMC
Volume	1

Other

Other	APMC 2005: Asia-Pacific Microwave Conference 2005
Country	China
City	Suzhou
Period	05-12-04 → 05-12-07

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All Science Journal Classification (ASJC) codes

Engineering(all)

Cite this

Rao, Z. M., Wong, T. J., & Ho, M. H. (2005). Forked stepped impedance resonator bandpass filter with harmonic suppression. In APMC 2005: Asia-Pacific Microwave Conference Proceedings 2005 [1606275] (Asia-Pacific Microwave Conference Proceedings, APMC; Vol. 1). https://doi.org/10.1109/APMC.2005.1606275

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AB - In this paper, a novel two-stage forked stepped impedance resonator (FSIR) bandpass filter is presented. The FSIR originated from an SIR has its both open ends split as a fork structure. A tunable transmission zero, which is used to suppress the second harmonic of the resonator, is created from the even- and odd-mode coupling effect of the two FSIR structures. The tape-lines feed together with the asymmetric feed orientation are adopted in this filter design to provide two additional zeros, each residing on either side of the passband edges, to improve the filter's frequency selectivity. An experiment is conducted and a good agreement between the measurement and the simulation is observed to verify the design.

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Access to Document

10.1109/APMC.2005.1606275