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SPS antenna element evaluationThe SPS transmitting array requires an architecture which will provide a low weight, high efficiency and high structural rigidity. Waveguide slot arrays constitute the most desirable option. Consequently, such an array was chosen for the SPS. Waveguide slot arrays offer high efficiency, uniform illumination, and are fairly lightweight. Bandwidths of such arrays are narrow, typically 1/2-2%. Although this does not directly impact the SPS, which transmits power at a single frequency of 2.45 GHz, the narrow bandwidth does constrain the thermal and mechanical tolerances of the antenna. The purpose of this program is to better define the electronic aspects of an SPS specific waveguide slot array. The specific aims of the program are as follows: (1) To build a full-scale half-module, 10 stick, array, the design parameters for which are to be determined analytical considerations tempered by experimental data on a single slotted radiating stick, (2) To experimentally evaluate the completed array with respect to antenna pattern, impedance and return loss; and (3) To measure swept transmission amplitude and phase to provide a data base for design of a receiving antenna.
Document ID
19820004682
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lunden, C. D.
(Boeing Aerospace Co. Seattle, WA, United States)
Lund, W. W.
(Boeing Aerospace Co. Seattle, WA, United States)
Nalos, E. J.
(Boeing Aerospace Co. Seattle, WA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1980
Publication Information
Publication: NASA. Johnson Space Center Workshop on Microwave Power Transmission and Reception 158-165 (SEE N82-12538 03-44)
Subject Category
Energy Production And Conversion
Accession Number
82N12555
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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