Design of a UHF Circularly Polarized Patch Antenna as a Feed for a 9.1 Metre Parabolic Reflector

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Authors
  1. Clénet, M.
Corporate Authors
Defence R&D Canada - Ottawa, Ottawa ONT (CAN)
Abstract
This document reports on the design of a circularly polarized feed at 436 MHz for a 9.1-metre reflector antenna. This feed is used with a reflector to establish a communication link with a Canadian picosatellite, CanX-1. The planar technology is chosen to achieve a simple, easy to fabricate and 'inexpensive' feed. The feed consists of a patch antenna mounted on a 2 cm thick dielectric material over a finite ground plane. The circular polarization is obtained with two ports excited 90° out of phase. The realised feed exhibits the expected results in terms of input impedance. Some picosatellites have been successfully tracked with this feed mounted on the reflector antenna.

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Keywords
Microstrip patch antennas;Circular polarized antennas;Picosatellites;CanX (Canadian Advanced Nanospace eXperiment)
Report Number
DRDC-OTTAWA-TM-2004-139 — Technical Memorandum
Date of publication
01 Jun 2004
Number of Pages
46
DSTKIM No
CA024560
CANDIS No
522215
Format(s):
Hardcopy;CD ROM

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