Title :
A New Uniplanar Bandpass Filter using λg/2 Slotline and λg/4 Coplanar Waveguide Resonators
Author :
Hettak, K. ; Coupez, J.Ph. ; Rius, E. ; Toutain, S.
Author_Institution :
LEST-URA CNRS n°1329, ENST de Bretagne - FRANCE TELECOM B.P.832 29285 Brest Cédex, Université de Bretagne Occidentale - Avenue Le Gorgeu B.P. 29280 Brest Cédex, FRANCE
Abstract :
This paper describes the design and performance of a new BP filter using λg/2 slotline and λg/4 CPW short-end resonators. A compact circuit, with an optimized geometry of the slotline elements, to reduce radiation loss, has been fabricated and tested. The experimental results with a center frequency of 8 GHz and a bandwidth of about 50% are shown, and compared to the simulation of a simple transmission line electrical model; a very good agreement is obtained between them over a very large bandwidth, as well in the passband as in the stopband.
Keywords :
Band pass filters; Bandwidth; Circuit simulation; Circuit testing; Coplanar waveguides; Distributed parameter circuits; Frequency; Geometry; Resonator filters; Slotline;
Conference_Titel :
Microwave Conference, 1994. 24th European
Conference_Location :
Cannes, France
DOI :
10.1109/EUMA.1994.337405