{"650660":{"#nid":"650660","#data":{"type":"event","title":"Ph.D. Dissertation Defense - Milad Frounchi","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ETitle\u003C\/strong\u003E\u003Cem\u003E:\u0026nbsp; \u003C\/em\u003E\u003Cem\u003EMillimeter-wave Quadrature Receivers for Atmospheric Sensing and Radiometry \u003C\/em\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ECommittee:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. John Crssler ECE, Chair, Advisor\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. Paul Steffes, ECE\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. Nelson Lourenco, ECE\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. Albin Gasiewski, CU Boulder\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. Glenn Lightsey, AE\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAbstract: \u003C\/strong\u003EThe objective of\u0026nbsp;this research is to investigate the design challenges of millimeter wave (mm-wave) quadrature receivers for emerging applications and develop new ideas to ad- dress these challenges. Next-generation wireless networks, satellite communications, at- mospheric sensing instruments, autonomous vehicle radars, and body scanners are targeting to operate at mm-wave frequencies, and high-performance electronics are needed to enable these technologies. In this research, we investigate novel circuit topologies to improve the performance of existing mm-wave quadrature receivers, particularly for radiometry and remote sensing applications. A transformer-based front-end switch is co-designed with an LNA where the transformer acts as the input matching network of the LNA, reducing the front- end loss and system noise figure. Broadband and low-loss quadrature signal generation networks are proposed to provide highly balanced quadrature signals to reject the image frequency content. In addition, a high-efficiency frequency multiplier topology is demon- strated, achieving superior performance compared to the state-of-the-art designs. Lastly, the reliability and noise performance of on-chip noise source devices (PN junctions) in a SiGe BiCMOS platform was characterized and compared. To confirm the advantages of our ideas, the measurement and simulation results of all fabricated circuits are presented and discussed.\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Millimeter-wave Quadrature Receivers for Atmospheric Sensing and Radiometry  "}],"uid":"28475","created_gmt":"2021-09-10 19:10:39","changed_gmt":"2021-09-10 19:10:39","author":"Daniela Staiculescu","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2021-09-27T10:30:00-04:00","event_time_end":"2021-09-27T12:30:00-04:00","event_time_end_last":"2021-09-27T12:30:00-04:00","gmt_time_start":"2021-09-27 14:30:00","gmt_time_end":"2021-09-27 16:30:00","gmt_time_end_last":"2021-09-27 16:30:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"434381","name":"ECE Ph.D. Dissertation Defenses"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"},{"id":"1808","name":"graduate students"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}