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Dr. Titipong Lertwiriyaprapa   
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secretary@isap2017.org.

Workshop 4

Satellite Communication Antennas: Challenges for Next Generation Payloads
NameDr. Sudhakar Rao
AffiliationNorthrop Grumman, USA

Biography :

Dr. Sudhakar Rao is a Technical Fellow at Northrop Grumman Aerospace Systems, Redondo Beach, California and is working on advanced antenna systems for space and aircraft applications for next generation payloads since 2010. Earlier he has worked at Lockheed Martin, Boeing Satellite Systems, and Spar Aerospace Limited (now MDA Canada) as Corporate Fellow and Chief Scientist roles. Dr. Rao developed antenna payloads for more than 70 satellites including first mobile satellite M-Sat, first Direct Broadcast Satellite with local channels (DirecTV-4S), first multiple beam antenna at Ka-band for personal communications satellites and first V/W band satellite antenna. His work on development of radiation templates for complex radiation patterns of satellite antennas for interference analysis was adopted and recommended by the International Telecommunication Union (ITU)/CCIR in 1992 as the world-wide standard for satellite manufacturers and operators. He published over 170 technical papers and has 46 U.S patents. He authored and co-edited three text book volumes on “Handbook of Reflector Antennas and Feed Systems” that were published in June 2013 by the Artech House. Dr. Rao is an IEEE Life Fellow and a Fellow of IETE. He received several awards and recognitions that include 2002 Boeing’s Special Invention Award for series of patents on satellite antenna payloads, IEEE Benjamin Franklin Key Award in 2006, Delaware Valley Engineer of the Year in 2008, and Asian American Engineer of the year award in 2008. He received IEEE Judith Resnik Technical Field Award in 2009 for pioneering work in aerospace engineering. He received IEEE Region 6 Outstanding Engineer of the Year for 2017 and the Northrop Grumman President’s award for innovations related to advanced payloads in August 2017. Dr. Rao served as the IEEE APS Distinguished Lecturer during 2015 to 2017. He was the Chair for the IEEE APS Industry Initiatives Committee during 2011-2015, IEEE APS Fellow Evaluation Committee member from 2015, and is currently serving as the Associate Editor for IEEE TAP and IEEE AP Magazine.

Abstract :

Satellite communications has recently introduced several new services in the recent past. These include local-channel broadcast for direct broadcast satellite service (DBS), high capacity K/Ka-band personal communication satellite (PCS) service, hosted payloads, mobile satellite services using very large deployable reflectors, high power hybrid satellites etc. All these satellite services are driven by the operators need to reduce the cost of satellite and pack more capability into a single satellite launch. Antenna sub-system design, mechanical packaging on the spacecraft and RF performance are very critical for these satellites. This talk will cover recent developments in the areas of antenna systems for FSS, BSS, PCS, & MSS satellite communications. Advanced antenna system designs for contoured beams, multiple beams, and reconfigurable beams will be presented. Multiple beam antenna (MBA) concepts and their advantages compared to conventional contoured beam payloads will be introduced. Next generation satellite systems for navigational and high frequency payloads require advanced antenna systems to meet the demanding requirements in terms of generating plurality of beams from a single antenna, on-orbit beam re-configurability, multiple band operation, and low-loss antennas. The talk will focus on existing technologies, limitations, advantages of the next generation payloads, RF performance and hardware implementation challenges. A dual-band antenna working at very high frequencies for future payloads capable of a ten-fold increase in satellite capacity will be discussed. Recent advances in feed technology and reflector technology will be addressed with few examples. Topics such as antenna designs for high capacity satellites, large deployable mesh reflector designs, low PIM designs, and power handling issues will be included. Advanced test methods for high power TVAC test of satellite payloads using “pick-up horn absorber loads” will be presented. Future trends in the satellite communications including use of higher frequency bands and navigational payloads will be discussed. At the end of this talk, engineers will be exposed to typical requirements, designs, hardware, software, and test methods for various satellite antennas.

Important Dates

    Paper Submission Deadline:

May 1, 2017

May 15, 2017

May 31, 2017

(Hard deadline)

12:00 am(Thailand standard time)


    Notification of Acceptance :

August 1-6, 2017


    Early Bird Registration Deadline:

August 31, 2017

September 4, 2017 (Extend)