Design of dual-bandpass hybrid waveguide-microstrip microwave filters

Mónica Martínez-Mendoza; Juan Sebastian Gomez Diaz; David Cañete-Rebenaque; Alejandro Alvarez-Melcón

doi:10.1109/TMTT.2008.2007189

Design of dual-bandpass hybrid waveguide-microstrip microwave filters

Mónica Martínez-Mendoza, Juan Sebastian Gomez Diaz, David Cañete-Rebenaque, Alejandro Alvarez-Melcón

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

11 Scopus citations

Abstract

A simple dual-bandpass filtering structure is proposed. The filter is implemented by means of a new hybrid waveguidemicrostrip technology. The novelty of the structure is that it combines two standard printed microstrip coupled line resonators, with a resonance of the base waveguide cavity, to implement a dual-band operation. Important aspects about the filter design, useful for practical applications are treated. This includes a study on the maximum coupling that can be achieved to the cavity resonance, and guidelines to control the positions of the two passbands and the transmission zeros. Besides, an example has been designed, manufactured and tested. The measurements on the fabricated prototype have confirmed the validity of the new structure to perform dual-band operation.

Original language	English (US)
Article number	4682671
Pages (from-to)	2913-2920
Number of pages	8
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	56
Issue number	12
DOIs	https://doi.org/10.1109/TMTT.2008.2007189
State	Published - Dec 1 2008
Externally published	Yes

Keywords

Dual-band filter synthesis
Dual-band filters
Hybrid waveguide-microstrip technology
Microstrip resonators
Microwave filter

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1109/TMTT.2008.2007189

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title = "Design of dual-bandpass hybrid waveguide-microstrip microwave filters",

abstract = "A simple dual-bandpass filtering structure is proposed. The filter is implemented by means of a new hybrid waveguidemicrostrip technology. The novelty of the structure is that it combines two standard printed microstrip coupled line resonators, with a resonance of the base waveguide cavity, to implement a dual-band operation. Important aspects about the filter design, useful for practical applications are treated. This includes a study on the maximum coupling that can be achieved to the cavity resonance, and guidelines to control the positions of the two passbands and the transmission zeros. Besides, an example has been designed, manufactured and tested. The measurements on the fabricated prototype have confirmed the validity of the new structure to perform dual-band operation.",

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