Synthesis of Wideband Multicoupled Resonators Filters
Authors:
- 23 December 2010
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 59 (3) , 593-603
Abstract
A method for the synthesis of multicoupled resonators filters with frequency-dependent couplings is presented. A circuit model of the filter that accurately represents the frequency responses over a very wide frequency band is postulated. The two-port parameters of the filter based on the circuit model are obtained by circuit analysis. The values of the circuit elements are synthesized by equating the two-port parameters obtained from the circuit analysis and the filtering characteristic function. Solutions similar to the narrowband case (where all the couplings are assumed frequency independent) are obtained analytically when all coupling elements are either inductive or capacitive. The synthesis technique is generalized to include all types of coupling elements. Several examples of wideband filters are given to demonstrate the synthesis techniques.Keywords
This publication has 10 references indexed in Scilit:
- Theory of Coupled Resonator Microwave Bandpass Filters of Arbitrary BandwidthIEEE Transactions on Microwave Theory and Techniques, 2010
- Synthesis of multi-coupled resonator filters with frequency-dependent couplings2010
- Notes on Bandpass Filters Whose Inter-Resonator Coupling Coefficients Are Linear Functions of Frequency2008
- Analytical Synthesis of Generalized Multi-band Microwave FiltersIEEE/MTT-S International Microwave Symposium, 2007
- Exact Design of Wideband Equal-Ripple Bandpass Filters with Non-Adjacent Resonator Couplings2005
- Coupling matrix synthesis for a new class of microwave filter configuration2005
- General coupling matrix synthesis methods for Chebyshev filtering functionsIEEE Transactions on Microwave Theory and Techniques, 1999
- Narrow-band multiple-coupled cavity synthesisIEEE Transactions on Circuits and Systems, 1974
- Synthesis of Combline and Capacitively Loaded Interdigital Bandpass Filters of Arbitrary BandwidthIEEE Transactions on Microwave Theory and Techniques, 1971
- Filter Design Using Transformed VariablesIEEE Transactions on Circuit Theory, 1968