Built-in antenna for radio communication terminals
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 7, 2001
Grant Date -
N/A
app pub date -
Jan 26, 1999
filing date -
Jan 30, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The built-in antenna for radio communication terminals of the present invention includes a loop antenna with a circumference of approximately one wavelength or less placed at an extremely short distance compared with the wavelength from the plane of the terminal board so that its loop plane may be perpendicular to the plane of said terminal bottom board which is opposite to the human body during communication, and a balanced/unbalanced conversion circuit with an impedance conversion function that supplies power to this loop antenna.
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