The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 09, 2001
Filed:
Jun. 30, 1999
Other;
Abstract
There is provided an antenna system applicable to an in-vehicle satellite tracking antenna system. A feed probe (,) is inserted into a ground plate (,) from a lower surface of the ground plate (,) toward an upper surface to protrude from the upper surface. A semicylindrical sub-reflector (,) forming a primary radiator together with the feed probe (,) is arranged on the upper surface of the ground plate (,) in the vicinity of the feed probe (,), and a main reflector (,) is arranged on the ground plate (,) such that mirror surfaces of the reflectors face to each other across the feed probe (,). The main reflector (,) is parabolic in at least one axis, and has a predetermined focal point or a predetermined focal line. The main reflector (,) is standing on the ground plate (,) such that the feed probe (,) is positioned on the focal point or the focal line, which is mounted on the ground plate (,) at a predetermined installing angle &thgr; so that an elevation angle of the antenna is directed in a direction that receives radio waves or a direction that radiates radio waves. Tracking of the antenna system with respect to an azimuth is carried out by turning the ground plate (,) in a fashion being out of contact with the feed probe (,). By virtue of the above construction, the antenna system can be downsized or given a low profile.