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Technical Education Training Webcast Series
Increasing Output Power and Efficiency of Microwave P2P Systems: Linearizing GaN Microwave Power Amplifiers Using RF Predistortion
April 17, 2013
8:00 AM PT/ 11:00 AM ET/ 3:00 PM UTC
Scintera Networks and Sumitomo Electric
Mendy Ouzillou, Vice President of Marketing, Scintera Networks
In order to accommodate increasing demand for data services, the requirements imposed on microwave systems are becoming more stringent and more difficult to achieve. Increasing bandwidth, modulation index and output power as well as ensuring consistent performance over time have caused microwave Original Equipment Manufacturers (OEMs) to rethink transmitter design and component choices.
Many microwave P2P OEMs are presently evaluating GaN amplifiers as a replacement for GaAs in order to achieve higher power and efficiency. As with many engineering solutions, GaN amplifiers present the designer with a new set of trade-offs and challenges that must be carefully considered. One such trade-off is the need for pre-distortion in order to meet desired linearity requirements not just at peak power but in backoff as well.
This presentation will demonstrate how adaptive Radio Frequency Pre-Distortion (RFPD) offers a field-proven and simple solution that with high power GaN PAs delivers the performance and flexibility necessary to meet the stringent requirements of microwave P2P systems in design today and the future. The impact of gate biasing on output power, efficiency, signal BW and linearity will be explored. Test results based on Sumitomo Electric’s SGK5867-30A GaN C-band microwave amplifier and Scintera Networks’ SC1894 RF PA linearizer will be presented across various operating conditions to enable designers to make effective trade-offs to meet their design goals.
Mr. Ouzillou has over 25 years marketing, engineering management and system design experience. Before joining Scintera, Mr. Ouzillou was director of marketing for Telegent Systems that was later sold to Broadcom and Spreadtrum. Previously, he was the senior director of marketing at Impinj responsible for both RFID reader systems and tag ICs. Mr. Ouzillou also spent 6 years with Silicon Laboratories as a marketing manager responsible for various cellular RF products including the first CMOS GSM power amplifier for handsets. Over the course of nearly 5 years at National Instruments, he was the founder and R&D Group Manager for the Sound & Vibration Instrument group. Mr. Ouzillou also worked at the University of Texas Applied Research Laboratories where he designed parallel digital signal processing beam-forming systems for use in active SONAR by the US Navy. He has published numerous technical articles for various trade magazines and has been awarded four patents. Mr. Ouzillou holds a BSEE from the University of Texas at Austin.