Title :
Fast direct electromagnetic optimization of a microwave filter without diagonal cross-couplings through model extraction
Author :
Garcia-Lamperez, Alejandro ; Llorente-Romano, Sergio ; Salazar-Palma, Magdalena ; Sarkar, Tapan K.
Author_Institution :
Dpto. Se??ales, Sistemas y Radiocomunicaciones, ETSI Telecomunicaci??n, Universidad Polit??cnica de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain. Tel: 34-91-336-7358, e-mail: lamperez@gmr.ssr.upm.es
Abstract :
An efficient and fast method for the electromagnetic optimization of passive microwave devices is proposed. The method is based on the extraction of a circuital model using identification of rational polynomials that fit the device response. The technique is used to optimize a fourth order L-band filter, formed by reentrant cavity resonators with just straight couplings between them implemented as irises and probes. The filter configuration allows the existence of one transmission zero located at a finite frequency without requiring diagonal cross couplings. The optimization procedure achieves a reduction of the number of electromagnetic analysis that makes possible the use of the finite element method in a design and optimization loop obtaining the final design in a reduced amount of time.
Keywords :
Circuits; Design optimization; Electromagnetic devices; Electromagnetic modeling; Microwave devices; Microwave filters; Microwave theory and techniques; Optimization methods; Polynomials; Resonator filters;
Conference_Titel :
Microwave Conference, 2003 33rd European
Conference_Location :
Munich, Germany
Print_ISBN :
1-58053-834-7
DOI :
10.1109/EUMA.2003.340873