Antenna coupling device for coupling an antenna of a hand-portable telephone to a remotely located antenna
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United States of America Patent
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-
Sep 30, 1997
Grant Date -
N/A
app pub date -
Mar 5, 1996
filing date -
Sep 6, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An antenna coupling device is disclosed for connecting, substantially inductively, a first antenna to a second antenna, whereat the antenna coupling device comprises a loop antenna (4) with two poles (15, 16). The loop antenna (4) is arranged to surround the first antenna and is connected to the second antenna via both of its poles (15, 16). Such an antenna coupling device connected via a cable (5) to an external antenna by the action of threading the antenna coupling device onto a helical antenna (2) of a hand-portable telephone (1) is used inside a vehicle for improving transmission and reception conditions of the hand-portable telephone (1).
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