{"608028":{"#nid":"608028","#data":{"type":"news","title":"Li Chosen for IEEE RFIC Best Paper Award","body":[{"value":"\u003Cp\u003ESensen Li was chosen for the 2018 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Best Student Paper Award. A Ph.D. student in the Georgia Tech School of Electrical and Computer Engineering (ECE), he received the award at the symposium, held on June 10-12 in Philadelphia, Pennsylvania.\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe IEEE\u0026nbsp;RFIC\u0026nbsp;is the premier integrated circuits conference focused exclusively on the latest developments in RF, Microwave, and Millimeter Wave Integrated Circuit technology and innovation.\u003C\/p\u003E\r\n\r\n\u003Cp\u003ELi\u0026rsquo;s award-winning paper is entitled\u0026nbsp;\u0026quot;A 28GHz Packaged Chireix Transmitter with Direct On-Antenna Outphasing Load Modulation Achieving 56%\/38% PA Efficiency at Peak\/6dB Back-Off Output Power.\u0026rdquo;\u0026nbsp;Joining Li as coauthors on the paper are present or past ECE Ph.D. students Taiyun Chi, Tzu-Yuan Huang, and Huy Thong Nguyen. ECE Assistant Professor Hua Wang is also a co-author; he is the director of the Georgia Tech Electronics and Microsystem (GEMS) Lab and is the advisor for everyone on this research team.\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EIn this\u0026nbsp;paper,\u0026nbsp;the team proposed and demonstrated\u0026nbsp;a packaged 28GHz Chireix\u0026nbsp;outphasing transmitter (TX) for power amplifier (PA)\u0026nbsp;efficiency enhancement at peak and back-off output power\u0026nbsp;(PBO). It utilizes a novel, high-efficiency dual-feed loop antenna\u0026nbsp;(DLA)-based non-isolating power combiner to realize direct\u0026nbsp;on-antenna power combining, and more importantly,\u0026nbsp;outphasing active load modulation. The\u0026nbsp;proposed Chireix TX\u0026nbsp;contains two phase-shifted sub-TXs simultaneously driving a\u0026nbsp;DLA on package. The TX chips are implemented in a 45nm\u0026nbsp;CMOS SOI process and integrated with the DLA by flip-chip\u0026nbsp;packaging.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThis\u0026nbsp;Chireix\u0026nbsp;outphasing TX design sets the new world\u0026nbsp;record of energy efficiency among all reported silicon-based power amplifiers and transmitters in the K-band and Ka-band frequency range.\u0026nbsp;This 28GHz\u0026nbsp;TX\u0026nbsp;system could replace many types of transmitters in wireless mobile devices, base stations, and infrastructure links in data centers, in particular\u0026nbsp;for mm-Wave\u0026nbsp;5G MIMO applications.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EOver the past several years, the GEMS team has been working on merging antenna and electronics to substantially boost energy and spectral efficiency of wireless front-end systems. Merging these two disciplines will enable researchers to break through many existing fundamental or practical\u0026nbsp;limits and open a completely new paradigm for future wireless front-end designs.\u0026nbsp;This paper is another proof-of-concept example of such a new design concept.\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe work described in this paper is sponsored by Intel Corporation and the U.S. Army Research Office (ARO).\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EPhoto caption:\u003C\/strong\u003E\u0026nbsp;Pictured (left to right) at the 2018 IEEE RFIC Student Best Paper Award Ceremony: Sensen Li (1st Author), Dr. Walid Ali-Ahmad (Facebook, Conference General Chair of 2018 IEEE RFIC), and ECE Assistant Professor Hua Wang.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003EECE Ph.D. student Sensen Li was chosen for the 2018 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Best Student Paper Award.\u003C\/p\u003E\r\n","format":"limited_html"}],"field_summary_sentence":[{"value":"ECE Ph.D. student Sensen Li was chosen for the 2018 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Best Student Paper Award. "}],"uid":"27241","created_gmt":"2018-07-23 20:06:35","changed_gmt":"2018-07-23 20:06:35","author":"Jackie Nemeth","boilerplate_text":"","field_publication":"","field_article_url":"","dateline":{"date":"2018-07-23T00:00:00-04:00","iso_date":"2018-07-23T00:00:00-04:00","tz":"America\/New_York"},"extras":[],"hg_media":{"608027":{"id":"608027","type":"image","title":"Sensen Li","body":null,"created":"1532375600","gmt_created":"2018-07-23 19:53:20","changed":"1532375600","gmt_changed":"2018-07-23 19:53:20","alt":"photograph of Sensen Li with Dr. Walid Ali-Ahmad (Facebook, Conference General Chair of 2018 IEEE RFIC) and ECE Assistant Professor Hua Wang","file":{"fid":"231911","name":"Sensen_Award_RFIC2018.jpg","image_path":"\/sites\/default\/files\/images\/Sensen_Award_RFIC2018.jpg","image_full_path":"http:\/\/www.tlwarc.hg.gatech.edu\/\/sites\/default\/files\/images\/Sensen_Award_RFIC2018.jpg","mime":"image\/jpeg","size":86423,"path_740":"http:\/\/www.tlwarc.hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/Sensen_Award_RFIC2018.jpg?itok=0CTnK67P"}}},"media_ids":["608027"],"related_links":[{"url":"http:\/\/gems.ece.gatech.edu","title":"Georgia Tech Electronics and Micro-System Lab"},{"url":"http:\/\/www.ece.gatech.edu","title":"School of Electrical and Computer Engineering"},{"url":"http:\/\/www.gatech.edu","title":"Georgia Tech"},{"url":"https:\/\/rfic-ieee.org","title":"2018 IEEE Radio Frequency Integrated Circuits Symposium"}],"groups":[{"id":"1255","name":"School of Electrical and Computer Engineering"}],"categories":[{"id":"134","name":"Student and Faculty"},{"id":"8862","name":"Student Research"},{"id":"135","name":"Research"},{"id":"143","name":"Digital Media and Entertainment"},{"id":"144","name":"Energy"},{"id":"145","name":"Engineering"},{"id":"147","name":"Military Technology"},{"id":"149","name":"Nanotechnology and Nanoscience"},{"id":"150","name":"Physics and Physical Sciences"}],"keywords":[{"id":"177303","name":"Sensen Li"},{"id":"67901","name":"Hua Wang"},{"id":"109","name":"Georgia Tech"},{"id":"166855","name":"School of Electrical and Computer Engineering"},{"id":"178583","name":"IEEE Radio Frequency Integrated Circuits Symposium (RFIC)"},{"id":"172905","name":"Georgia Tech Electronics and Microsystem Lab"},{"id":"172369","name":"RF"},{"id":"178584","name":"microwave integrated circuit"},{"id":"178585","name":"millimeter wave integrated circuit"},{"id":"178586","name":"power amplifier efficiency enhancement"},{"id":"2616","name":"antenna"},{"id":"178587","name":"Chireix transmitter"},{"id":"178588","name":"wireless mobile devices"},{"id":"178589","name":"base stations"},{"id":"178590","name":"data center infrastructure links"},{"id":"178591","name":"mm-Wave 5G MIMO"},{"id":"177273","name":"spectral efficiency"},{"id":"178592","name":"wireless front-end designs"}],"core_research_areas":[{"id":"39451","name":"Electronics and Nanotechnology"},{"id":"39531","name":"Energy and Sustainable Infrastructure"},{"id":"39481","name":"National Security"}],"news_room_topics":[],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003EJackie Nemeth\u003C\/p\u003E\r\n\r\n\u003Cp\u003ESchool of Electrical and Computer Engineering\u003C\/p\u003E\r\n\r\n\u003Cp\u003E404-894-2906\u003C\/p\u003E\r\n","format":"limited_html"}],"email":["jackie.nemeth@ece.gatech.edu"],"slides":[],"orientation":[],"userdata":""}}}