IEICE Electronics Express
Online ISSN : 1349-2543
LETTER
Harmonics blocking in hairpin filter using Defected Microstrip Structure
M. Naser-MoghadasiM. AlamolhodaB. Rahmati
Author information
JOURNALS FREE ACCESS

2011 Volume 8 Issue 9 Pages 629-635

Details
Abstract

In this paper, it is demonstrated that the first and second spurious passbands suppression in microstrip hairpin filters can be achieved by simply patterning appropriate geometries of several Defected Microstrip Structure (DMS) in parallel coupled sections. By properly tuning DMS resonator dimensions, multiple transmission zeros can be generated in the vicinity of spurious harmonics and a wide stopband can be obtained. Experimental results verify that 25dB and 40dB suppression for the first and the second harmonics, respectively, without affecting the main passband response.

Information related to the author
© 2011 by The Institute of Electronics, Information and Communication Engineers
Previous article Next article
feedback
Top