BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/New_York BEGIN:DAYLIGHT DTSTART:20250309T030000 TZOFFSETFROM:-0500 TZOFFSETTO:-0400 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20251102T010000 TZOFFSETFROM:-0400 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20250525T141651Z UID:F5168400-2ACE-41EF-9D87-B189A3AB84BB DTSTART;TZID=America/New_York:20250509T090000 DTEND;TZID=America/New_York:20250509T102000 DESCRIPTION:THz waves are sandwiched between micro and optical waves with f requencies in the order from 300 GHz up to 10 THz. In this part of the spe ctrum\, technological development remains less advanced compared to optics and microwaves. Electronic devices exhibit cut-off frequencies in the low er THz range\, while the energy of THz waves at these frequencies is relat ively low\, resulting in limited available power and sensitivity. This rai ses the question of why exploration of this spectral region is worthwhile. Historically\, and still predominantly\, the primary application has been the development of receivers for astronomical observations in the THz ban d. The inherent limitations in power and sensitivity characteristic of thi s spectral region have been mitigated through radiation coupling mechanism s utilizing quasi-optical systems.\nRecent advancements in silicon technol ogy\, coupled with the growing demand for increased bandwidth\, have drive n the global industry to explore higher frequencies\, particularly within the 100–300 GHz spectral range\, for sensing and communication applicati ons. The broader bandwidth\navailable at these frequencies enables signifi cantly faster wireless data transmission. Notably\, 5G networks already ut ilize millimeter-wave frequencies\, and this trend is expected to continue with the development of 6G. Additionally\, radars operating at several hu ndred gigahertz are being employed for high-resolution object detection ac ross various industrial applications.\nIn this presentation\, I will provi de an overview of our research activities on quasi-optical antenna systems \, initially developed for THz space applications and more recently extend ed to communication and sensing applications. The discussion will cover th e development of highfrequency electromagnetic models used for perfomance optimization\, along with a review of multiple prototype implementations s panning in the 100 GHz to 3 THz frequency range.\n\nCo-sponsored by: Strac om\n\nSpeaker(s): Nuria Llombart\, \n\nVirtual: https://events.vtools.ieee .org/m/481951 LOCATION:Virtual: https://events.vtools.ieee.org/m/481951 ORGANIZER:tarek.djerafi@inrs.ca SEQUENCE:9 SUMMARY:THz Science and Technology Seminar (TSTS) Series: Quasi-Optical Ant enna Systems: From Space to Widespread THz Applications URL;VALUE=URI:https://events.vtools.ieee.org/m/481951 X-ALT-DESC:Description: <br /><p>THz waves are sandwiched between micro and optical waves with frequencies in the order from 300 GHz up to 10 THz. In this part of the spectrum\, technological development remains less advanc ed compared to optics and microwaves. Electronic devices exhibit cut-off f requencies in the lower THz range\, while the energy of THz waves at these frequencies is relatively low\, resulting in limited available power and sensitivity. This raises the question of why exploration of this spectral region is worthwhile. Historically\, and still predominantly\, the primary application has been the development of receivers for astronomical observ ations in the THz band. The inherent limitations in power and sensitivity characteristic of this spectral region have been mitigated through radiati on coupling mechanisms utilizing quasi-optical systems.<br>Recent advancem ents in silicon technology\, coupled with the growing demand for increased bandwidth\, have driven the global industry to explore higher frequencies \, particularly within the 100&ndash\;300 GHz spectral range\, for sensing and communication applications. The broader bandwidth<br>available at the se frequencies enables significantly faster wireless data transmission. No tably\, 5G networks already utilize millimeter-wave frequencies\, and this trend is expected to continue with the development of 6G. Additionally\, radars operating at several hundred gigahertz are being employed for high- resolution object detection across various industrial applications.<br>In this presentation\, I will provide an overview of our research activities on quasi-optical antenna systems\, initially developed for THz space appli cations and more recently extended to communication and sensing applicatio ns. The discussion will cover the development of highfrequency electromagn etic models used for perfomance optimization\, along with a review of mult iple prototype implementations spanning in the 100 GHz to 3 THz frequency range.</p> END:VEVENT END:VCALENDAR