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DESCRIPTION:Abstract\n\nWhen designing RF/microwave filters\, especial atte
 ntion is commonly paid to the obtaining of high-selectivity filtering resp
 onses with sharp-rejection characteristics and high amplitude flatness wit
 hin 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 deve
 lopment of RF/microwave filters featuring quasi-flatgroup-delayresponse we
 ll beyond their 3-dB transmission bands. These RF filters simultaneously e
 xhibit transmission zeros in their out-of-band regions as a step further w
 ith regard to more-classic Bessel/Gaussian-type filter approaches. To star
 t with\, the motivation of the necessity of low-phase-distortion RF filter
 s is introduced. Subsequently\, different solutions for the design of cons
 tant-in-band-group-delayRF filters with transmission zeros\, going from lo
 wpass to bandpass applications with moderate-to-ultra-wideband characteris
 tics\, are revised. They exploit various classes of RF circuit structures\
 , such as multi-transmission-line transversal circuit networks or compleme
 ntary-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 flatgr
 oupdelay\, experimental results of manufactured proof-of-concept prototype
 s are shown.\n\nDate &amp; Time: Wednesday\, December 3\, 2025\, at 10:30 AM\n
 Location: University of Waterloo\, EIT 3151\nSpeaker: Prof. Roberto Gómez
 -García\, University of Alcalá\, Spain.\n\nOrganizers\n\n- IEEE KW AP-S 
 Student Branch Chapter.\n-\nIEEE KW MTT-S Student Branch Chapter.\n\n-\nIE
 EE KW Sensors Council Chapter\n\n-\nIEEE KW Young Professionals\n\nCo-spon
 sored by: Professor Raafat Mansour\n\nSpeaker(s): \,  Roberto Gómez-Garc
 ía\n\nBldg: EIT-3151\, Waterloo\, Ontario\, Canada
LOCATION:Bldg: EIT-3151\, Waterloo\, Ontario\, Canada
ORGANIZER:amansoor@uwaterloo.ca
SEQUENCE:23
SUMMARY:Enabling Advanced Digital Communications Systems With RF/Microwave 
 Filters With Beyond-Transmission-Band Flat Group Delay
URL;VALUE=URI:https://events.vtools.ieee.org/m/518945
X-ALT-DESC:Description: &lt;br /&gt;&lt;p&gt;&lt;img src=&quot;https://events.vtools.ieee.org/v
 tools_ui/media/display/249fa476-a04b-48c8-935c-3161bfcd8790&quot; width=&quot;591&quot; h
 eight=&quot;384&quot;&gt;&lt;/p&gt;\n&lt;p class=&quot;p1&quot;&gt;&amp;nbsp\;&lt;/p&gt;\n&lt;p class=&quot;p2&quot;&gt;&lt;strong&gt;Abstrac
 t &lt;/strong&gt;&lt;/p&gt;\n&lt;p class=&quot;p3&quot;&gt;When designing RF/microwave filters\, espec
 ial attention is commonly paid to the obtaining of high-selectivity filter
 ing responses with sharp-rejection characteristics and high amplitude flat
 ness within the transmission band. Nevertheless\, this generally involves 
 high in-bandgroup-delayvariations\, which may be prohibitive in some appli
 cations\, such as digital communication scenarios due to inter-symbol inte
 rference issues. The purpose of thistalk is to present recent advances in 
 the development of RF/microwave filters featuring quasi-flatgroup-delayres
 ponse well beyond their 3-dB transmission bands. These RF filters simultan
 eously exhibit transmission zeros in their out-of-band regions as a step f
 urther with regard to more-classic Bessel/Gaussian-type filter approaches.
  To start with\, the motivation of the necessity of low-phase-distortion R
 F 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 cha
 racteristics\, are revised. They exploit various classes of RF circuit str
 uctures\, such as multi-transmission-line transversal circuit networks or 
 complementary-diplexer schemes for reflectionless/absorptive implementatio
 ns\, as well as RF power couplers in transversal mode for reflective reali
 zations. For all these families of RF filters with beyond-transmission-ban
 d flatgroupdelay\, experimental results of manufactured proof-of-concept p
 rototypes are shown.&lt;/p&gt;\n&lt;p class=&quot;p3&quot;&gt;&amp;nbsp\;&lt;/p&gt;\n&lt;p class=&quot;p3&quot;&gt;&amp;nbsp\;
 &lt;/p&gt;\n&lt;p class=&quot;skrollable skrollable-between&quot; data-start=&quot;1797&quot; data-end=
 &quot;2239&quot;&gt;&lt;strong class=&quot;skrollable skrollable-between&quot; data-start=&quot;239&quot; data
 -end=&quot;255&quot;&gt;Date &amp;amp\; Time:&lt;/strong&gt; Wednesday\, December 3\, 2025\, at 1
 0:30 AM&lt;br class=&quot;skrollable skrollable-between&quot; data-start=&quot;295&quot; data-end
 =&quot;298&quot;&gt;&lt;strong class=&quot;skrollable skrollable-between&quot; data-start=&quot;298&quot; data
 -end=&quot;311&quot;&gt;Location:&lt;/strong&gt; University of Waterloo\, EIT 3151&lt;br class=&quot;
 skrollable skrollable-between&quot; data-start=&quot;355&quot; data-end=&quot;358&quot;&gt;&lt;strong cla
 ss=&quot;skrollable skrollable-between&quot; data-start=&quot;358&quot; data-end=&quot;370&quot;&gt;Speaker
 :&lt;/strong&gt; Prof. Roberto G&amp;oacute\;mez-Garc&amp;iacute\;a\, University of Alca
 l&amp;aacute\;\, Spain.&lt;/p&gt;\n&lt;p class=&quot;skrollable skrollable-between&quot; data-sta
 rt=&quot;1797&quot; data-end=&quot;2239&quot;&gt;&amp;nbsp\;&lt;/p&gt;\n&lt;h3 class=&quot;skrollable skrollable-be
 tween&quot; data-start=&quot;226&quot; data-end=&quot;246&quot;&gt;Organizers&lt;/h3&gt;\n&lt;ul class=&quot;skrolla
 ble skrollable-between&quot; data-start=&quot;247&quot; data-end=&quot;327&quot;&gt;\n&lt;li&gt;IEEE KW AP-S
  Student Branch Chapter.&lt;/li&gt;\n&lt;li class=&quot;skrollable skrollable-between&quot; d
 ata-start=&quot;247&quot; data-end=&quot;287&quot;&gt;\n&lt;p class=&quot;skrollable skrollable-between&quot; 
 data-start=&quot;249&quot; data-end=&quot;287&quot;&gt;IEEE KW MTT-S Student Branch Chapter.&lt;/p&gt;\
 n&lt;/li&gt;\n&lt;li class=&quot;skrollable skrollable-between&quot; data-start=&quot;392&quot; data-en
 d=&quot;427&quot;&gt;\n&lt;p class=&quot;skrollable skrollable-between&quot; data-start=&quot;394&quot; data-e
 nd=&quot;427&quot;&gt;IEEE KW Sensors Council Chapter&lt;/p&gt;\n&lt;/li&gt;\n&lt;li class=&quot;skrollable
  skrollable-between&quot; data-start=&quot;428&quot; data-end=&quot;459&quot;&gt;\n&lt;p class=&quot;skrollabl
 e skrollable-between&quot; data-start=&quot;430&quot; data-end=&quot;459&quot;&gt;IEEE KW Young Profes
 sionals&lt;/p&gt;\n&lt;/li&gt;\n&lt;/ul&gt;\n&lt;p&gt;&amp;nbsp\;&lt;/p&gt;\n&lt;p&gt;&lt;img src=&quot;https://events.vto
 ols.ieee.org/vtools_ui/media/display/98b440ef-acd3-4537-93a3-8af2facd4218&quot;
  width=&quot;637&quot; height=&quot;911&quot;&gt;&lt;/p&gt;
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