Method of moments analysis of displaced-axis dual reflector antennas
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Authors
Vered, Nissan
Subjects
Method of moments analysis of displaced-axis dual reflector antennas
Advisors
Jenn, David C.
Date of Issue
1992-03
Date
1992-Mar
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
Small symmetric dual reflector antennas suffer from low efficiency due to subreflector blockage of the main reflector and subreflector scattering. These can be reduced by slicing the main dish and translating its rotational axis, along with modifying the subreflector geometry. This type of design is usually applied to low-frequency reflectors, but high-frequency analysis techniques are used. Consequently the agreement between measured and computed data is not as good as it would be for a rigorous solution such as the method of moments. This thesis modifies an existing method of moments computer code to handle the displaced axis geometry, and computes the radiation pattern and the efficiency of this antenna as a function of geometrical and electrical design parameters. Optimum configurations are identified for several feed types.
Type
Thesis
Description
Series/Report No
Department
Department of Electrical and Computer Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
vi, 72 p.: ill.;28 cm.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
Copyright is reserved by the copyright owner.