Description |
This talk presents various types of feed elements used for space
applications. The first part of the talk discusses various feed elements
suitable for space applications. These include feeds for reflectors,
radars, phased arrays, global horns, and TT&C Omni-coverage feeds. Typical
radiation patterns, scan performance, and design constraints will be
presented along with hardware examples. The second part deals with the
feed networks that go behind the radiating elements and includes OMTs,
polarizers, filters/diplexers, combiners/dividers etc. Integrated design,
analysis, and manufacture methods will be discussed. High power and PIM
analysis and test methods will be discussed during the talk. Recent
advances in the feed assembly design for low-loss and low cross-polar
applications will be presented with examples. Feed elements suitable for
array antennas and phased array systems for space applications will be
discussed including practical examples.
About Dr. Sudhakar Rao:
Dr. Sudhakar Rao received B.Tech, M.Tech, and Ph.D degrees in electronics
& communications engineering from REC Warangal, IIT Kharagpur, and IIT
Madras. He had a long and distinguished careers in ECIL Hyderabad, ERDE
Bangalore, University of Trondheim Norway, University of Manitoba, Spar
Aerospace Limited Canada, Hughes/Boeing Satellite Systems and Lockheed
Martin Space Systems.
Dr. Rao invented novel high power TVAC test methods for satellite payloads
using “pick-up horn absorber loads” that have about 8 times cost and
schedule savings. He developed antenna payloads for more than 65
satellites including first mobile satellite M-Sat and first Direct
Broadcast Satellite with local channels (DirecTV-4S). 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.
Dr. Rao authored over 165 technical papers, co-edited three text book
volumes and has 44 U.S patents. He is a Fellow of IEEE and IETE. He
received several awards including the Boeing’s Special Invention and
Technical Achievement awards, Lockheed Martin’s Inventor of Technology
award, IEEE's Benjamin Franklin Key and Judith Resnik Technical Field
awards, Delaware Valley Engineer of the Year, Asian American Engineer of
the year award and IETE’s 2015 Prof. S.N. Mitra Memorial award.
|