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An adaptive array antenna for mobile satellite communicationsThe adaptive array is linearly polarized and consists essentially of a driven lambda/4 monopole surrounded by an array of parasitic elements all mounted on a ground plane of finite size. The parasitic elements are all connected to ground via pin diodes. By applying suitable bias voltages, the desired parasitic elements can be activated and made highly reflective. The directivity and pointing of the antenna beam can be controlled in both the azimuth and elevation planes using high speed digital switching techniques. The antenna RF losses are neglible and the maximum gain is close to the theoretical value determined by the effective aperture size. The antenna is compact, has a low profile, is inexpensive to manufacture and can handle high transmitter power.
Document ID
19880016326
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Milne, Robert (Communications Research Centre Ottawa Ontario, Canada)
Date Acquired
September 5, 2013
Publication Date
May 1, 1988
Publication Information
Publication: Jet Propulsion Lab., Proceedings of the Mobile Satellite Conference
Subject Category
Communications And Radar
Accession Number
88N25710
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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