Varactor-tuned dual-mode bandpass filters

Wenxing Tang; Jia Sheng Hong

doi:10.1109/TMTT.2010.2052958

Varactor-tuned dual-mode bandpass filters

Wenxing Tang, Jia Sheng Hong

School of Engineering & Physical Sciences

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

118 Citations (Scopus)

Abstract

This paper presents a new type of varactor-tuned dual-mode bandpass filter. Since the two operating modes (i.e., the odd and even modes) in a dual-mode microstrip open-loop resonator do not couple to each other, the tuning of the passband frequency becomes simple with a single dc-bias circuit while keeping nearly constant absolute bandwidth. Design equations and procedures are derived, and two two-pole tunable bandpass filters of this type are demonstrated experimentally. © 2010 IEEE.

Original language	English
Article number	5508429
Pages (from-to)	2213-2219
Number of pages	7
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	58
Issue number	8
DOIs	https://doi.org/10.1109/TMTT.2010.2052958
Publication status	Published - Aug 2010

Keywords

Dual-mode resonator filter
microstrip filters
tunable filter

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10.1109/TMTT.2010.2052958

Cite this

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abstract = "This paper presents a new type of varactor-tuned dual-mode bandpass filter. Since the two operating modes (i.e., the odd and even modes) in a dual-mode microstrip open-loop resonator do not couple to each other, the tuning of the passband frequency becomes simple with a single dc-bias circuit while keeping nearly constant absolute bandwidth. Design equations and procedures are derived, and two two-pole tunable bandpass filters of this type are demonstrated experimentally. {\textcopyright} 2010 IEEE.",

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KW - tunable filter

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Varactor-tuned dual-mode bandpass filters

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Keywords

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