Title :
Coupling-Matrix Design of Dual and Triple Passband Filters
Author :
Mokhtaari, Marjan ; Bornemann, Jens ; Rambabu, K. ; Amari, Smain
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC
Abstract :
The concept of the conventional coupling matrix is extended to include designs of dual- and triple-band filters. The multiband response is created by either placing transmission zeros within the bandwidth of a wideband filter or using higher order resonances. Realizable topologies both in planar and waveguide technologies can be imposed and associated coupling coefficients enforced during optimization. The design process is verified by measurements and comparison with results of commercially available field solvers
Keywords :
band-pass filters; circuit resonance; network synthesis; network topology; poles and zeros; waveguide filters; coupling coefficients; coupling-matrix design; dual passband filters; field solvers; higher order resonances; multiband response; transmission zeros; triple passband filters; waveguide technologies; wideband filter; Band pass filters; Bandwidth; Couplings; Filtering theory; Passband; Planar waveguides; Resonance; Topology; Transmission line matrix methods; Wideband; Dual-band filters; filters; microstrip filters; waveguide filters;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2006.884687
