Enabling Advanced Digital Communications Systems With RF/Microwave Filters With Beyond-Transmission-Band Flat Group Delay
December 3 @ 10:30 am - 1:00 pm
Abstract
When designing RF/microwave filters, especial attention is commonly paid to the obtaining of high-selectivity filtering responses with sharp-rejection characteristics and high amplitude flatness within the transmission band. Nevertheless, this generally involves high in-bandgroup-delayvariations, which may be prohibitive in some applications, such as digital communication scenarios due to inter-symbol interference issues. The purpose of thistalk is to present recent advances in the development of RF/microwave filters featuring quasi-flatgroup-delayresponse well beyond their 3-dB transmission bands. These RF filters simultaneously exhibit transmission zeros in their out-of-band regions as a step further with regard to more-classic Bessel/Gaussian-type filter approaches. To start with, the motivation of the necessity of low-phase-distortion RF filters is introduced. Subsequently, different solutions for the design of constant-in-band-group-delayRF filters with transmission zeros, going from lowpass to bandpass applications with moderate-to-ultra-wideband characteristics, are revised. They exploit various classes of RF circuit structures, such as multi-transmission-line transversal circuit networks or complementary-diplexer schemes for reflectionless/absorptive implementations, as well as RF power couplers in transversal mode for reflective realizations. For all these families of RF filters with beyond-transmission-band flatgroupdelay, experimental results of manufactured proof-of-concept prototypes are <a href="http://shown.
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Date & Time: Wednesday, December 3, 2025, at 10:30 AM
Location: University of Waterloo, EIT 3151
Speaker: Prof. Roberto Gómez-García, University of Alcalá, <a href="http://Spain.
Organizers
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– IEEE KW AP-S Student Branch <a href="http://Chapter.
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IEEE KW MTT-S Student Branch <a href="http://Chapter.
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IEEE KW Sensors Council Chapter
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IEEE KW Young Professionals
Co-sponsored by: Professor Raafat Mansour
Speaker(s): ,
Roberto Gómez-García
Bldg: EIT-3151, Waterloo, Ontario, Canada