Communications: radio wave antennas – Antennas – Antenna with parasitic reflector
Patent
1993-05-27
1994-05-17
Hille, Rolf
Communications: radio wave antennas
Antennas
Antenna with parasitic reflector
343795, 455293, H01Q 1913, H01Q 920
Patent
active
053132203
ABSTRACT:
An integrated semi-parabolic antenna/down converter receiving system wherein the support boom of a semi-parabolic antenna contains the down converter electronics. Located at the focal area of the semi-parabolic antenna are a pair of driven feed elements which are electrically connected to the printed circuit board carrying the down converter electronics. The down converter is formed in an elongated shape to fit entirely within the formed hollow interior of the support boom. The down converter comprises a first printed circuit board which contains a low noise amplifier connected to an RF filter located at the input end of the printed circuit board. The RF filter is surrounded by an input ground shield which covers the RF filter circuit. The shield is soldered to the top and bottom ground planes of the printed circuit board. At the opposite end of the printed circuit board are two output I.F. amplifiers whose outputs are serially connected together. A coax ground shield engages the opposite end of the first printed circuit board in a perpendicular orientation so as to position the opposite end of the printed circuit board within the hollow interior.
REFERENCES:
patent: 3162858 (1964-12-01), Cutler
patent: 4290068 (1981-09-01), Bogner
patent: 4295143 (1981-10-01), Winegard et al.
patent: 4513293 (1985-04-01), Stephens
patent: 4595890 (1986-06-01), Cloutier
patent: 4791717 (1988-12-01), Hemmie
patent: 4811031 (1989-03-01), Maile et al.
patent: 4896163 (1990-01-01), Shibata et al.
patent: 5008956 (1991-04-01), Hemmie
patent: 5019833 (1991-05-01), Nonaka
patent: 5202699 (1993-04-01), Hemmie
Hemmie Dale L.
Mills Marc D.
Brown Peter Toby
Conifer Corporation
Hille Rolf
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