Mobile wireless communications device having diversity antenna system and related methods
First Claim
1. A mobile wireless communications device comprising:
- a diversity antenna and a main antenna; and
RF circuitry configured totune the diversity antenna into a diversity communications frequency band for a diversity mode of operation with the main antenna, andplace the diversity antenna in an open circuit condition based upon cross-coupling between the diversity antenna and the main antenna when operating in the diversity communications frequency band, said RF circuitry comprising at least one switch coupled to said diversity antenna for placing said diversity antenna in the open circuit condition.
7 Assignments
0 Petitions
Accused Products
Abstract
A mobile wireless communications device has a portable handheld housing. A circuit board is carried by the portable handheld housing. RF circuitry is carried by the circuit board. A diversity antenna and main antenna are carried by the portable handheld housing and coupled to the RF circuitry and operative together. The RF circuitry tunes the diversity antenna into a diversity communications frequency band to achieve a diversity mode of operation with the main antenna and tunes the diversity antenna into a non-diversity communications frequency band when cross-coupling has occurred from the diversity antenna to the main antenna when operating in the diversity communications frequency band. A switch is carried by the portable handheld housing and connected to the RF circuitry and coupled between the diversity and main antennae and disconnects the diversity antenna when operating in the non-diversity band to prevent cross-coupling from the diversity antenna to the main antenna.
24 Citations
23 Claims
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1. A mobile wireless communications device comprising:
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a diversity antenna and a main antenna; and RF circuitry configured to tune the diversity antenna into a diversity communications frequency band for a diversity mode of operation with the main antenna, and place the diversity antenna in an open circuit condition based upon cross-coupling between the diversity antenna and the main antenna when operating in the diversity communications frequency band, said RF circuitry comprising at least one switch coupled to said diversity antenna for placing said diversity antenna in the open circuit condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mobile wireless communications device comprising:
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a housing; a diversity antenna and a main antenna carried by said housing in spaced apart relation; and RF circuitry carried by the housing and configured to tune the diversity antenna into a diversity communications frequency band for a diversity mode of operation with the main antenna, and place the diversity antenna in an open circuit condition based upon cross-coupling between the diversity antenna and the main antenna when operating in the diversity communications frequency band, said RF circuitry comprising at least one switch coupled to said diversity antenna for placing said diversity antenna in the open circuit condition. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of operating a mobile wireless communications device comprising a diversity antenna, a main antenna, and RF circuitry coupled to the diversity and main antennas, the method comprising:
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tune the diversity antenna into a diversity communications frequency band for a diversity mode of operation with the main antenna; and place the diversity antenna in an open circuit condition based upon cross-coupling between the diversity antenna and the main antenna when operating in the diversity communications frequency band, the RF circuitry comprising at least one switch coupled to the diversity antenna for placing the diversity antenna in the open circuit condition. - View Dependent Claims (20, 21, 22, 23)
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Specification