Title :
A new semi-lumped microwave filter structure
Author :
Sheta, Abdel Fattah ; Hettak, Khelifa ; Coupez, J.P. ; Person, C. ; Toutain, S. ; Blot, J.P.
Author_Institution :
LEST, Ecole Nat. Superieure des Telecommun. de Bretagne, Brest, France
Abstract :
A novel narrow-band microwave filter structure is presented. The merit of this circuit lies in the simplicity of design formulas readily applicable to narrow-band filters. The structure can be realized in planar or uniplanar technology. The design formulas yield good results for bandwidths lower than 10%. Bandpass filter with 4% relative bandwidth at 3 GHz was designed with the proposed theory and then implemented in both microstrip and coplanar technologies. Experimental results show good agreement with theoretical predictions.<>
Keywords :
band-pass filters; coplanar waveguides; lumped parameter networks; microstrip filters; microwave filters; passive filters; 3 GHz; bandpass filter; coplanar technology; design formulas; microstrip technology; narrowband microwave filter; planar technology; semilumped microwave filter structure; uniplanar technology; Band pass filters; Bandwidth; Capacitance; Circuits; Dielectric substrates; Impedance; Inverters; Microwave filters; Narrowband; Resonator filters;
Conference_Titel :
Microwave Symposium Digest, 1995., IEEE MTT-S International
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-2581-8
DOI :
10.1109/MWSYM.1995.405964
