MOBILE WIRELESS COMMUNICATIONS DEVICE HAVING DIVERSITY ANTENNA SYSTEM AND RELATED METHODS
First Claim
1. A mobile wireless communications device, comprising:
- a portable handheld housing;
a circuit board carried by the portable handheld housing and RF circuitry carried by the circuit board;
a diversity antenna and main antenna carried by the portable handheld housing and coupled to the RF circuitry and operative together wherein the RF circuitry tunes the diversity antenna into 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; and
a switch carried by the portable handheld housing and connected to the RF circuitry and coupled between the diversity and main antennae that disconnects the diversity antenna when operating in the non-diversity communications frequency band to prevent cross-coupling from the diversity antenna to the main antenna.
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.
15 Citations
20 Claims
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1. A mobile wireless communications device, comprising:
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a portable handheld housing; a circuit board carried by the portable handheld housing and RF circuitry carried by the circuit board; a diversity antenna and main antenna carried by the portable handheld housing and coupled to the RF circuitry and operative together wherein the RF circuitry tunes the diversity antenna into 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; and a switch carried by the portable handheld housing and connected to the RF circuitry and coupled between the diversity and main antennae that disconnects the diversity antenna when operating in the non-diversity communications frequency band to prevent cross-coupling from the diversity antenna to the main antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A mobile wireless communications device, comprising:
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a portable handheld housing having an upper portion and a lower portion; a circuit board carried by the portable handheld housing, RF circuitry carried by the circuit board, and a main antenna carried by the circuit board at the lower portion of the housing and coupled to the RF circuitry and configured for multi-frequency cellular phone communications, including frequencies in the Global System for Mobile (GSM) communications band; a diversity antenna formed as an array antenna and carried by the portable handheld housing at the upper portion of the portable handheld housing and coupled to the RF circuitry and the main antenna and configured to be tuned with the main antenna into a diversity communications frequency band to achieve a diversity mode of operation with the main antenna and to be tuned with the main 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; and a switch carried by the portable handheld housing and connected to the RF circuitry and coupled between the diversity and main antennae that disconnects the diversity antenna when operating in the non-diversity communications frequency band to prevent cross-coupling from the diversity antenna to the main antenna. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of operating a mobile wireless communications device, wherein the mobile wireless communications device comprises a portable handheld housing, a circuit board carried by the portable handheld housing, RF circuitry carried by the circuit board and a diversity antenna and main antenna carried by the portable handheld housing and coupled to the RF circuitry and operative together, wherein the method comprises:
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tuning the diversity antenna into a diversity communications frequency band to achieve a diversity mode of operation with the main antenna; tuning the diversity antenna into a non-diversity communications frequency band when cross-coupling occurs from the diversity antenna to the main antenna when operating in the diversity communications frequency band; and disconnecting the diversity antenna when operating in the non-diversity communications frequency band to prevent cross-coupling from the diversity antenna to the main antenna. - View Dependent Claims (20)
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Specification