A dual band MDS/MMDS 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 connected to the printed circuit board carrying the dual band down converter electronics. The dual band 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, two RF filters, and two diplexer filters located at the input end of the printed circuit board. The RF filters are mounted on opposite sides of the printed circuit board.
The input is directly connected to the pair of driven feed elements. The RF filters are surrounded by input ground shields. BACKGROUND OF THE INVENTION Related InventionsThis application is a continuation-in-part of application Ser. 08/004,968, filed Jan. 15, 1993, now U.S. 5,300,941, which is a continuation of Ser.
Pacific Monolithics Down Converter Antenna
07/707,918, filed May 30,1991 and now U.S. 5,202,699, issued Apr. 13, 1993, entitled 'Integrated MMDS Antenna and Down Converter.' Field of the InventionThis invention relates to down converters for semi-parabolic antennas for use in multichannel multipoint distribution systems (MMDS) and multipoint distribution system (MDS) (also termed 'wireless cable') and, in particular, to integrating the down converter into the feed boom or support for semi-parabolic antennas for dual band reception. Statement of the ProblemWireless cable is competing with cable to offer programming to the public. Wireless cable utilizes a semi-parabolic reflector which is mounted on the rooftop of a consumer's house.
Pacific Monolithics Down Converter
Multiple channels are delivered to this semi-parabolic reflector from a remote location. (g) second means for shielding said second filter, said second shielding means electrically connected to said second ground plane of said printed circuit board.