Uwb Microstrip Filter Design Using a Time-domain Technique

A time-domain technique is proposed for ultra-wideband (UWB) microstrip-filter design. The design technique uses the reflection coefficient (S11) specified in the frequency domain. When the frequency response of the UWB filter is given, the response will be approximated by a series of UWB pulses in the time domain. The UWB pulses are Gaussian pulses of the same bandwidth with different time delays. The method tries to duplicate the reflection scenario in the time domain for very narrow Gaussian pulses (to obtain the impulse response of the system) when the pulses are passed through the filter, and obtains the value of the filter coefficients based on the number of UWB pulses, amplitudes, and delays of the pulses. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 387–391, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop. 21177