Communications: radio wave antennas – Antennas – Antenna with parasitic reflector
Patent
1993-12-20
1996-06-04
Hajec, Donald
Communications: radio wave antennas
Antennas
Antenna with parasitic reflector
343795, 343700MS, 455293, H01Q 1913, H01Q 920
Patent
active
055237681
ABSTRACT:
An integrated semi-parabolic antenna/down converter MMDS 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 directly 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 an RF filter located at the input end of the printed circuit board. The input of the RF filter circuit is directly connected to the pair of driven feed elements by soldering the legs of the driven feed elements directly to the input of the RF filter stage on the first 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 is an output amplifier whose output is connected to a coax output lead. 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.
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Hemmie Dale L.
Mills Douglas
Conifer Corporation
Hajec Donald
Le Hoang-anh
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