Radio communication equipment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 18, 1998
Grant Date -
N/A
app pub date -
Jun 14, 1996
filing date -
Jun 15, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A small radio communication unit which requires no antenna adjustment is provided by using small chip antennas whose gain is not degraded and which have a wide bandwidth. The inventive radio communication unit comprises a first chip antenna contained within the unit and having a first frequency characteristic; a first filter connected to the first antenna and having a pass bandwidth for passing a received signal; a receiving circuit connected to an output end of the first antenna; a receiving PLL circuit for outputting a local oscillation signal; a second chip antenna contained within the unit and having a second frequency characteristic; a second filter connected to the second antenna and having a pass bandwidth for passing a transmitted signal; a transmitting circuit connected to an input end of the second filter and comprising a transmitting carrier oscillation and modulating circuit, a transmission amplifier circuit and an isolator; a control circuit for controlling operations of the receiving circuit and the transmitting circuit; and a modulating signal input terminal to which a modulating signal is applied.
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