Title :
Synthesis of cross-coupled lossy resonator filters with multiple input/output couplings by gradient optimization
Author :
Lamperez, Alejandro Garcia ; Salazar-Palma, M. ; Padilla-Cruz, M.J. ; Carpintero, I.H.
Author_Institution :
Dpto. Senales, Sistemas y Radiocomunicaciones, Univ. Politecnica de Madrid, Spain
Abstract :
A synthesis technique for lossy or lossless resonator filters with general coupling topology and multiple input/output couplings has been developed and tested. The method is based on the minimization of the difference between the filter response and the theoretical one. Two examples of an exact and an approximate synthesis respectively shows the good performance of the proposed approach.
Keywords :
circuit optimisation; coupled circuits; gradient methods; low-pass filters; poles and zeros; resonator filters; transfer function matrices; coupling matrix coefficients; coupling topology; cross-coupled resonator filters; filter response; gradient optimization; lossless resonator filters; lossy resonator filters; lowpass prototype filter; multiple input/output couplings; transfer function zero/pole locations; Band pass filters; Cost function; Coupling circuits; Filtering theory; Frequency; Propagation losses; Reflection; Resonator filters; Symmetric matrices; Transfer functions;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1219177
