Communications: radio wave antennas – Antennas – Antenna with parasitic reflector
Patent
1996-11-13
1999-02-23
Le, Hoanganh
Communications: radio wave antennas
Antennas
Antenna with parasitic reflector
343839, 343761, H01Q 316
Patent
active
058749250
ABSTRACT:
A parabolic antenna provided with a reflector and an arm comprises a housing fixed to a free end of the arm, a case enclosing a low noise blockdown converter ("LNB"), a feed horn protruding from a front side of the LNB case and a driving and a driven gears for adjusting an elevation angle of the feed horn. The LNB case has a pair of hinge pins. The housing has a pair of supporting members which are spaced from each other and provided with a pair of apertures into which the hinge pins of the LNB case are snugly fitted, respectively. The driven gear is engaged on one of the hinge pins of the LNB case and the driving gear is engaged on an input shaft. The input shaft rotatably passes through one of the supporting members, the driving gear and the driven gear being meshed with each other and, in turn, rotated with the input shaft, thereby allowing the elevation angle of the feed horn can be adjusted by rotating the input shaft.
REFERENCES:
patent: 5184145 (1993-02-01), Devillers et al.
patent: 5646638 (1997-07-01), Winegard et al.
patent: 5696519 (1997-12-01), Suzuki et al.
patent: 5714960 (1998-02-01), Choi
Daewoo Electronics Co. Ltd.
Le Hoang-anh
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