Antenna coupling device for coupling an antenna of a hand-portable telephone to a remotely located antenna
AssigneeAllgon AB
InventorMagnus Marthinsson
Life of this patent
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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).
Claims14
An antenna coupling device for providing RF energy coupling, substantially inductively, between a first antenna included in a hand-portable telephone, and a second antenna remotely located with respect to the telephone, said antenna coupling device comprising a transmission line having first and second ends, the first end being connected to a loop antenna with two poles, said loop antenna being arranged to surround the first antenna, the second end of said transmission line being connected to the second antenna.
Dependencies are inferred from the claim text.