BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/Los_Angeles BEGIN:DAYLIGHT DTSTART:20250309T030000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:PDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20241103T010000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:PST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20250118T013353Z UID:C783F98C-FDD5-4725-ACD1-60680B837C0D DTSTART;TZID=America/Los_Angeles:20250115T180000 DTEND;TZID=America/Los_Angeles:20250115T203000 DESCRIPTION:ABSTRACT\n\nThis presentation will provide a description of III -V semiconductors and their use in commercial communication satellites. Th e focus will be on Geo-synchronous (GEO) type satellites\, but the discuss ion will be relevant to Middle-Earth-Orbit (MEO) and Low-Earth-Orbit (LEO) satellite products. To this end a comparison of reliability requirements for these orbital types will be given showing their differences. The focus on GEO will allow the presentation to talk about the more stringent requi rements for qualification of these devices which encompasses the other pro duct types. Additionally\, this presentation will compare these material t ypes against others to justify their usage for these products and provide insight into where Si type devices may be useful.\n\nThe need for high per formance\, high reliability RF electronics (typically referred to as “th e payload”) in Commercial Communications Satellites comes from both the products environment and it’s mission. The environment for GEO satellite s is 36\,000km from the earth’s surface encompassed in a distant\, harsh radiation and thermal background. The mission is for high performance com munications systems that can last for many years. For these applications\, it is required to supply radiation hardened electronics while also provid ing the demanding performance required to meet the payload’s mission. To this end the use of III-V semiconductor technologies has enabled many of these missions. This presentation will provide an understanding of what ar e commercial communications satellites and their payload architectures. Th is will provide insight into their need for III-V RF active semiconductors . A brief history of communication satellites will be given to allow an un derstanding of how the commercial and non-commercial (military/government) products are related\, and what are the possible trends. Additionally a r eview and comparison of the various device types against other semiconduct or materials like silicon will be discussed. Subsequently a look at some p resent requirements will be given to show the state of this technology in this application\, a description of the qualification process for these de vices will be given to show how the performance is guaranteed over the lif etime in space\, and a view of the future usage for this technology will b e presented.\n\n[]\n\nSpeaker(s): Jim Sowers\, \n\nRoom: RM 4021\, Bldg: S CDI\, Sobrato Campus for Discovery and Innovation\, Santa Clara\, Californ ia\, United States\, 95053\, Virtual: https://events.vtools.ieee.org/m/453 332 LOCATION:Room: RM 4021\, Bldg: SCDI\, Sobrato Campus for Discovery and Inno vation\, Santa Clara\, California\, United States\, 95053\, Virtual: https ://events.vtools.ieee.org/m/453332 ORGANIZER:vvi4hc@virginia.edu SEQUENCE:14 SUMMARY:The Role of III-V Semiconductors in Commercial Communication Satell ite Payloads URL;VALUE=URI:https://events.vtools.ieee.org/m/453332 X-ALT-DESC:Description: <br /><p id="docs-internal-guid-729c98d2-7fff-f582- f0d5-d77fe3dfaae9" dir="ltr" style="line-height: 1.3900000000000001\; text -align: justify\; margin-top: 0pt\; margin-bottom: 8pt\;"><span style="fon t-size: 12pt\; font-family: 'Times New Roman'\,serif\; color: #000000\; ba ckground-color: #ffffff\; font-weight: 400\; font-style: normal\; font-var iant: normal\; text-decoration: none\; vertical-align: baseline\; white-sp ace: pre-wrap\;">ABSTRACT</span></p>\n<p dir="ltr" style="line-height: 1.3 900000000000001\; text-align: justify\; margin-top: 0pt\; margin-bottom: 8 pt\;"><span style="font-size: 12pt\; font-family: 'Times New Roman'\,serif \; color: #000000\; background-color: #ffffff\; font-weight: 400\; font-st yle: normal\; font-variant: normal\; text-decoration: none\; vertical-alig n: baseline\; white-space: pre-wrap\;">This presentation will provide a de scription of III-V semiconductors and their use in commercial communicatio n satellites.&nbsp\; The focus will be on Geo-synchronous (GEO) type satel lites\, but the discussion will be relevant to Middle-Earth-Orbit (MEO) an d Low-Earth-Orbit (LEO) satellite products.&nbsp\; To this end a compariso n of reliability requirements for these orbital types will be given showin g their differences.&nbsp\; The focus on GEO will allow the presentation t o talk about the more stringent requirements for qualification of these de vices which encompasses the other product types.&nbsp\; Additionally\, thi s presentation will compare these material types against others to justify their usage for these products and provide insight into where Si type dev ices may be useful.</span></p>\n<p dir="ltr" style="line-height: 1.3900000 000000001\; text-align: justify\; margin-top: 0pt\; margin-bottom: 8pt\;"> <span style="font-size: 12pt\; font-family: 'Times New Roman'\,serif\; col or: #000000\; background-color: #ffffff\; font-weight: 400\; font-style: n ormal\; font-variant: normal\; text-decoration: none\; vertical-align: bas eline\; white-space: pre-wrap\;">The need for high performance\, high reli ability RF electronics (typically referred to as &ldquo\;the payload&rdquo \;) in Commercial Communications Satellites comes from both the products e nvironment and it&rsquo\;s mission.&nbsp\; The environment for GEO satelli tes is 36\,000km from the earth&rsquo\;s surface encompassed in a distant\ , harsh radiation and thermal background.&nbsp\; The mission is for high p erformance communications systems that can last for many years.&nbsp\; For these applications\, it is required to supply radiation hardened electron ics while also providing the demanding performance required to meet the pa yload&rsquo\;s mission.&nbsp\; To this end the use of III-V semiconductor technologies has enabled many of these missions.&nbsp\; This presentation will provide an understanding of what are commercial communications satell ites and their payload architectures.&nbsp\; This will provide insight int o their need for III-V RF active semiconductors.&nbsp\; A brief history of communication satellites will be given to allow an understanding of how t he commercial and non-commercial (military/government) products are relate d\, and what are the possible trends.&nbsp\; Additionally a review and com parison of the various device types against other semiconductor materials like silicon will be discussed.&nbsp\; Subsequently a look at some present requirements will be given to show the state of this technology in this a pplication\, a description of the qualification process for these devices will be given to show how the performance is guaranteed over the lifetime in space\, and a view of the future usage for this technology will be pres ented.</span></p>\n<p dir="ltr" style="line-height: 1.2\; margin-top: 12pt \; margin-bottom: 0pt\;"><img src="https://events.vtools.ieee.org/vtools_u i/media/display/983894b7-f390-423a-abe1-b20638e0bef2" alt="" width="894" h eight="503"></p> END:VEVENT END:VCALENDAR