BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Australia/Brisbane BEGIN:STANDARD DTSTART:19920301T020000 TZOFFSETFROM:+1100 TZOFFSETTO:+1000 TZNAME:AEST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20250609T131607Z UID:D2575733-7406-4883-9D5C-CC822FB09E64 DTSTART;TZID=Australia/Brisbane:20250516T150000 DTEND;TZID=Australia/Brisbane:20250516T160000 DESCRIPTION:An antenna mediates between guided-waves and free-space fields\ , most commonly via acceleration of charges in conductive materials. These accelerating charges will in-turn perturb the free-space electromagnetic fields to which they are coupled\, causing radiation of electromagnetic wa ves. However\, this picture implies that antennas must necessarily be made primarily of conductive metal and\, although this is suitable for the mic rowave range\, where metals are close to ideal conductors\, Ohmic loss unf ortunately increases with respect to frequency.\n\nTo compensate for this\ , growing interest in reaching higher frequencies has spurred the fundamen tal re-imagination of antenna design\, this time with a dielectric focus. As a result\, a working understanding of the wireless systems of the prese nt and future will demand a firm grasp of the core principles of dielectri c radiators.\n\nThis talk will provide an overview spanning from classical microwave-range works\, through the mm-wave antennas that low-temperature cofired ceramics have made possible\, to contemporary cutting-edge all-di electric radiators for terahertz and light-waves\, which are etched photol ithographically from high-purity semiconductors.\n\nSpeaker(s): Dr. Daniel Headland\, \n\nRoom: 653\, Bldg: 49\, IN-PERSON: The University of Queens land\, Advanced Engineering building\, St Lucia \, Brisbane\, Queensland\ , Australia\, 4072\, Virtual: https://events.vtools.ieee.org/m/484444 LOCATION:Room: 653\, Bldg: 49\, IN-PERSON: The University of Queensland\, A dvanced Engineering building\, St Lucia \, Brisbane\, Queensland\, Austra lia\, 4072\, Virtual: https://events.vtools.ieee.org/m/484444 ORGANIZER:h.espinosa@griffith.edu.au SEQUENCE:64 SUMMARY:Dielectric antennas for wireless systems at mm-wave frequencies and beyond URL;VALUE=URI:https://events.vtools.ieee.org/m/484444 X-ALT-DESC:Description: <br /><p><img style="float: left\;" src="https://ev ents.vtools.ieee.org/vtools_ui/media/display/c375edb7-6e18-46cb-914b-fc44e fa03dfc" width="225" height="274"></p>\n<p style="text-align: justify\;">< span style="font-size: 12pt\;">An antenna mediates between guided-waves an d free-space fields\, most commonly via acceleration of charges in conduct ive materials. These accelerating charges will in-turn perturb the free-sp ace electromagnetic fields to which they are coupled\, causing radiation o f electromagnetic waves. However\, this picture implies that antennas must necessarily be made primarily of conductive metal and\, although this is suitable for the microwave range\, where metals are close to ideal conduct ors\, Ohmic loss unfortunately increases with respect to frequency.</span> </p>\n<p style="text-align: justify\;"><span style="font-size: 12pt\;">To compensate for this\, growing interest in reaching higher frequencies has spurred the fundamental re-imagination of antenna design\, this time with a dielectric focus. As a result\, a working understanding of the wireless systems of the present and future will demand a firm grasp of the core pri nciples of dielectric radiators.</span></p>\n<p style="text-align: justify \;"><span style="font-size: 12pt\;">This talk will provide an overview spa nning from classical microwave-range works\, through the mm-wave antennas that low-temperature cofired ceramics have made possible\, to contemporary cutting-edge all-dielectric radiators for terahertz and light-waves\, whi ch are etched photolithographically from high-purity semiconductors.</span ></p> END:VEVENT END:VCALENDAR