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February 22, 2010

Mtg: Modelling and Measurement of Dual-Circular Polarized Feed for Prime Focus Antenna

by @ 9:22 pm. Filed under ALL, Communications, Electronics Design
 

THURSDAY March 18, 2010
SCV Antennas and Propagation Chapter
Speaker: Jeffrey Pawlan, Pawlan Communications
Time: Networking/refreshments at 6:00 PM, Presentation at 6:30 PM
Cost: none
Place: Cogswell Polytechnical College, 1175 Bordeaux Drive, Sunnyvale
RSVP: not required
Web: www.ewh.ieee.org/r6/scv/aps

Septum polarizers in antenna feeds have been used in military and commercial satellite antennas for 45 years because of their elegant simplicity and excellent performance.? However, their design is mathematically difficult.? With advances in 3D field simulation software, we can accurately model and optimize it for a specific application.? This talk will present the history, how it works, and will show in detail how one may utilize software to not only model the feed, but also model the combination of the feed with a large reflector.? The effects of the reflected signals from the center of the dish back into the feed will be shown.

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