Synthesis of Multiband Filters by Linear Optimization

In this article, a new synthesis method for the generation of multiband generalized Chebyshev polynomials with prescribed transmission zeros is presented. The proposed linear optimization technique is applicable to symmetric and asymmetric filter responses. To demonstrate its general application, the technique has been applied to the direct synthesis of dual-and triple-bandpass filters. A 7th degree dual-band prototype and a 10th degree triple-band prototype, synthesized using the proposed technique, have been fabricated and tested to validate the practicality of the method.