Seminar title: RF Engineering in Telesat's Lightspeed Network
Date: Friday, October 6, 2023
Time: 10:30 a.m. to 11:20 a.m.
Location: Room GWC122, Gillin Hall, University of New Brunswick. Fredericton
Speaker biography: John Carr obtained his Undergraduate and Master’s degrees from the University of New Brunswick in 1987 and 1990, respectively, at the Radiating Systems Research Laboratory, under the guidance of Dr. James Tranquilla. He was awarded his Doctorate in 2009 from Queen’s University, with the Very High Speed Silicon Circuits Group under the guidance of Dr. Brian Frank, for a 26 GHz Phase-Locked Loop Frequency Multiplier in 0.18 micrometer CMOS. John has worked in RF design for space (including Canada’s Radarsat remote sensing satellite), commercial aeronautical SATCOM, and cellular base station components since 1990. John has also provided production support for flight management systems used in military and commercial aircraft. John has been with Telesat since May, 2021. He is currently involved in RF module and antenna subsystem specification and procurement for User Terminal applications.
Abstract: Telesat’s Lightspeed Low Earth Orbit (LEO) network is being designed to meet the demand for enterprise-class secure, high-throughput, low-latency worldwide access. This includes careful design consideration for the satellite, the landing stations, and the user terminals. A family of user terminal solutions is being developed that address the different data and installation requirements for the customer. In all of these solutions, the performances of the radio-frequency uplink and downlink modules play an important role in meeting customer expectations and system requirements. The Block Up-Converter and the Low Noise Block downconverter are presented, with critical performance characteristics identified and tradeoffs discussed.
