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US 2008/0258982 A1Published application
Dual Autodiplexing Antenna
AssigneeMotorola, Inc.
InventorsGreg R. Black, Vijay L. Asrani, Adrian Napoles
Life of this patent
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AssigneeMotorola, Inc.
InventorsGreg R. Black, Vijay L. Asrani, Adrian Napoles
Estimating the term…
A dual autodiplexing antenna (300) redirects power flow (303) from an unloaded antenna to a loaded antenna, thereby improving communication performance under loaded conditions. The dual autodiplexing antenna (300) includes a first antenna (101) disposed at a first end (103) of a portable two-way communication device (100). A second antenna (102) is disposed at the distal end (104) of the portable two-way communication device (100). The first antenna (101) and second antenna (102) are coupled to a transceiver (107) by a first transmission line matching circuit (201) and a second transmission line matching circuit (202), respectively. In one embodiment, the first antenna (101) is configured to primarily operate in a first bandwidth, while the second antenna (102) is configured to primarily operate in a second bandwidth. When one of the first antenna (101) or second antenna (102) is loaded, power flow (303) is redirected to the lesser loaded antenna.
A portable two-way communication device, comprising:
An electronic device, comprising:
A mobile telephone comprising a first antenna operating in at least a first bandwidth and a second antenna operating in at least a second bandwidth, further comprising a transceiver coupled to a first transmission line and a second transmission line, wherein the first antenna is coupled to the first transmission line and the second antenna is coupled to the second transmission line, each of the first antenna and the second antenna having a nominal impedance and a plurality of loaded impedances, the plurality of loaded impedances being determined by a placement of a user's hands about the mobile telephone, wherein a power transmission from the transceiver is increased to a lesser loaded antenna of the first antenna and the second antenna as a function of the placement of the user's hands about the mobile telephone.
Dependencies are inferred from the claim text.