Design of a Broadband Parallel-Coupled Microstrip Filters without Spurious Resonances

A design of parallel-coupled microstrip bandpass filters without spurious resonance is presented. Two different techniques are used to eliminate this response at twice the passband frequency ( 2 f o ). The first one is based on usage of suspended substrate, while the second is carried out by shortin...

Full description

Saved in:
Bibliographic Details
Published in:Active and Passive Electronic Components 2007-01, Vol.2007, p.126-130
Main Author: Maher M. Abd-Elrazzak
Format: Article
Language:English
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A design of parallel-coupled microstrip bandpass filters without spurious resonance is presented. Two different techniques are used to eliminate this response at twice the passband frequency ( 2 f o ). The first one is based on usage of suspended substrate, while the second is carried out by shorting the parallel-coupled lines to the ground plane through two shorting walls. The numerical results show that a broadband filter can be obtained by the suppression of the spurious response. The finite difference time domain (FDTD) with the perfect matched layer (PML) is used in the present analysis. The obtained results are compared with the available published data and good agreements are found.
ISSN:0882-7516
1563-5031
DOI:10.1155/2007/93548