Design of a bandpass transversal filter employing a novel hybrid waveguide-printed structure

M. Martínez-Mendoza, Juan Sebastian Gomez Diaz, D. Cañete-Rebenaque, J. L. Gómez-Tornero, A. Alvarez-Melcon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations


This paper introduces a novel hybrid structure to implement a bandpass transversal filter based on the combination of two well known technologies. The structure combines for the first time the waveguide and the microstrip technologies for the design of transversal filters with maximum selectivity. By combining these technologies, very compact structures are obtained to implement the so called Modified Doublet. One of the resonators of the doublet is formed with the TM111 mode of a waveguide cavity, while the second resonator is implemented using a standard printed line microstrip resonator. It is shown that all the parameters of the N + 2 coupling matrix can be controlled by means of the dimensions of the proposed structure. Results validate the novel structure, and show how a second order filtering function of a specific coupling matrix can be easily synthesized.

Original languageEnglish (US)
Title of host publication2007 IEEE MTT-S International Microwave Symposium Digest
Number of pages4
StatePublished - Oct 2 2007
Externally publishedYes
Event2007 IEEE MTT-S International Microwave Symposium, IMS 2007 - Honolulu, HI, United States
Duration: Jun 3 2007Jun 8 2007


Other2007 IEEE MTT-S International Microwave Symposium, IMS 2007
Country/TerritoryUnited States
CityHonolulu, HI


  • Band-pass filters
  • Coupling matrixes
  • Resonator filters
  • Synthesis techniques
  • Transmission zeros

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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