A novel synthesis technique for generalized Chebyshev microwave band-pass filters

A novel synthesis technique which can arbitrarily place transmission zeros, directly synthesize in band-pass domain without a low-pass prototype transformation for generalized Chebyshev microwave band-pass filters is discussed in this paper. Compared with the classical synthesis theory for narrowband filters, this method can reduce the relative error generated in the frequency transformation and apply to synthesize wideband and ultra-wideband filters. The network matrix derived from the discussed technique is physically meaningful and examples show a good agreement.