Title :
Accounting for spurious couplings in quadruplet microstrip filters
Author :
Jayyousi, A.B. ; Lancaster, M.J.
Author_Institution :
Sch. of Electron. & Electr. Eng., Univ. of Birmingham, Birmingham, UK
Abstract :
A technique for overcoming the effects of spurious couplings in quadruplet filters is suggested. The method involves inverting the polarity of one of the stray couplings and adjusting the direct and self-couplings accordingly. Distortion of S-parameters and group delay usually associated with the presence of stray couplings is hence overcome. An application of the method using microstrip rectangular open loop resonators is presented.
Keywords :
S-parameters; microstrip filters; microstrip resonators; S-parameters; filter sensitivity; group delay; microstrip rectangular open loop resonators; quadruplet microstrip filters; spurious couplings; Couplings; Degradation; Delay; Filtering theory; Microstrip filters; Microstrip resonators; Microwave filters; Reflection; Resonator filters; Transmission line matrix methods; Filter sensitivity; microstrip filters; open loop resonators; quadruple filters; spurious couplings;
Conference_Titel :
Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2803-8
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2009.5165800
