A NOVEL SYNTHESIS PROCEDURE FOR ULTRA WIDEBAND (UWB) BANDPASS FILTERS

In this paper, a novel synthesis procedure is presented to achieve optimum solution for UWB fllter parameters. It is found that the narrowband approximation is not valid for any arbitrary powered rational type flltering function. For wider bandwidths, the frequency dependent terms have signiflcant efiects on the frequency response. Hence, extracted flltering function cannot be mapped to generalize Chebyshev polynomials. This paper will provide an exact synthesis procedure for step impedance resonators (SIR's) type UWB bandpass fllters. To validate the synthesis procedure prototypes are designed and fabricated. Simulated and measured results show good agreement with proposed theory.

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