Distributed antenna for personal communication system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Apr 30, 2002
Grant Date -
N/A
app pub date -
Jun 12, 1998
filing date -
Jun 12, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A distributed antenna for use in a digital mobile telephone system includes a set of coaxial cable to couple the RF signals to and from a base station in which at least one set of the transmitter and receiver is transmitting and receiving said RF signals, two mutually isolated amplifiers, two dividers, at least one combiner, and at least one built-in antenna to couple with a subscriber unit(s). A printed circuit board is provided to assemble said built-in antenna on one side of said printed circuit board, and to assemble other electronic circuits on another side of said printed circuit board, and said printed circuit board is housed a plastic case. Said distributed antenna provides a small sized and very cheap antenna solution to spread RF signals to serve a wider serving area. Moreover, if at least a set of transmitter and receiver is included in said combiner to repeat said RF signals between said base station and said subscriber units, tremendously higher gain and conversions in the control protocol and/or RF frequencies can be realized.
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