Title :
Coupling Matrix Synthesis for Asymmetric Filter Topologies
Author :
Gajaweera, R.N. ; Lind, Larry F.
Author_Institution :
Dept. of Electron., Univ. of York, York
Abstract :
An easy to follow general procedure is given here to synthesize a coupling matrix for a physically asymmetric or/and asynchronously tuned network exhibiting the generalized Chebyshev frequency characteristics. In this procedure we show that a physically realizable coupling matrix can be obtained for a given S21(s) by first choosing a suitable structure that can support the required number of transmission zeros with a sufficient number of non-zero couplings. Then a system of non-linear equations can be written to find the elements of the coupling matrix of the selected structure using the Newton-Raphson method, which guarantees rapid convergence.
Keywords :
Chebyshev filters; Newton-Raphson method; Newton-Raphson method; asymmetric filter topologies; asynchronously tuned network; coupling matrix synthesis; generalized Chebyshev frequency characteristics; nonlinear equations; rapid convergence; Chebyshev approximation; Convergence; Couplings; Filtering theory; Filters; Frequency synthesizers; Network synthesis; Network topology; Newton method; Nonlinear equations;
Conference_Titel :
Art of Miniaturizing RF and Microwave Passive Components, 2008. IMWS 2008. IEEE MTT-S International Microwave Workshop Series on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-2876-2
Electronic_ISBN :
978-1-4244-2877-9
DOI :
10.1109/IMWS.2008.4782266
