Summary
URSI Commission B 2013 International Symposium on Electromagnetic Theory EMTS 2013
2013
Session Number:23PM1P
Session:
Number:23PM1P-01
Synthesis of Symmetric and Asymmetric Triple-Stopband Microwave Filter using Frequency Transformation
Seema Awasthi, Animesh Biswas, Mohammed Jaleel Akhtar,
pp.485-488
Publication Date:2013/5/20
Online ISSN:2188-5079
DOI:10.34385/proc.30.23PM1P-01
Summary:
This paper presents the synthesis of direct coupled triple-stopband filters using coupling matrix approach. This design method is applicable to both symmetric and asymmetric triple stopband filter.The frequency transformation techniques has been applied for finding the locations of poles and zeros of a direct coupled triple stopband filter. By properly combining several single-band filtering functions, the multiband filtering function of various bandwidth are generated. Prescribed real or complex transmission zeros can also be employed in the tripleband filtering function. Finally 12-pole symmetric and asymmetric triple-stopband filters have been synthesised in cul-de-sac configuration to validate the proposed method.