Satellite receiving antenna installations on airborne platforms, shipboard, motor vehicles, dwellings, etc., are often required to be flush mounted to a mounting surface. If the antenna is to be attached to the surface of an aircraft, the profile must be sufficiently small to prevent intolerable drag and air stream turbulence. In addition to this low-profile requirement, the antenna must have excellent wide-angle scanning performance, and good gain properties over the full range of motion. This can be realized by either scanning the beam mechanically, electrically, or as a combination of both. This paper describes a low-profile GBS antenna solution capable of satisfying these requirements and producing a wide-angle mechanical scanning beam with relatively constant antenna gain over the scanned coverage area.
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