Design of bandpass elliptic filters employing inductive windows and dielectric objects

  • Francisco Javier Pérez Soler /
  • Mónica Martínez Mendoza /
  • Fernando Daniel Quesada Pereira /
  • David Cañete Rebenaque /
  • Alejandro Alvarez Melcon /
  • Richard J. Cameron
Journal ar
IEEE Transactions on Microwave Theory and Techniques
  • Volumen: 55
  • Número: 11
  • Fecha: 01 November 2007
  • Páginas: 2393-2398
  • ISSN: 00189480
  • Source Type: Journal
  • DOI: 10.1109/TMTT.2007.908673
  • Document Type: Article
In this paper, we propose an alternative configuration for the design of bandpass inductive filters using transversal topologies. The structure is based on the use of a dielectric post asymmetrically placed on a cavity resonator. The input and output windows will couple energy to the TE 102- and TE 103-mode resonators at the same time, therefore obtaining the transversal topology. The proposed configuration is very compact, and allows to implement transmission zeros for maximum selectivity in an easy way. Results are validated with Ansoft's finite-element High Frequency Structure Simulator tool, and with an integral-equation technique to demonstrate the validity of the proposed structure. © 2007 IEEE.

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