Multiple Frequency Impedance Matching by Frequency Transformation
It is shown that the application of frequency transformation to a single-frequency impedance matching network simplifies the design of networks for impedance matching at any number N of frequencies. The required design procedure has been presented in formal network theoretic terms. A systematic procedure is given for generating all the equivalent networks for this purpose, from which the best one can be chosen according to a predefined criterion. Illustrative designs and some of the relevant circuits are given for some low values of N.
KeywordsFrequency transformation technique Multiple frequency impedance matching Network design
This research was supported by the Honorary Scientist scheme of the Indian National Science Academy. The author thanks Shoubhik Dutta Roy for his help in the preparation of this manuscript.
- 1.L. Wienberg, Network Analysis and Synthesis (Wiley, Hoboken, New Jesrsey, 1962)Google Scholar
- 2.E.A. Guillemin, Synthesis of Passive Networks (Wiley, Hoboken, New Jesrsey, 1964)Google Scholar
- 3.S.C. Dutta Roy, On the design of multiple pass-band filters by frequency transformation. IETE J. Res. 58, 20–23 (2012)Google Scholar
- 4.N. Nallam, S. Chatterjee, Multi-band frequency transformations, matching networks and amplifiers. IEEE Trans. Circuits Syst. I. Regular Papers, 60, 1635–1647 (2013)Google Scholar