Method and apparatus for use of GPS and cellular antenna combination
First Claim
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1. A method for allowing a GPS receiver and a cellular telephone transceiver to share a common antenna comprising the steps of:
- coupling said GPS receiver and said cellular telephone transceiver to said antenna; and
disconnecting said GPS receiver from said antenna when said cellular telephone transceiver is transmitting.
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Abstract
The invention discloses a method for improving the compatibility GPS receivers and cellular telephones, typically when both are found in the same unit. The invention solves the problem of the GPS receiver and the cellular telephone sharing the same antenna, and also discloses an embodiment wherein a second, diversity antenna is used for the GPS receiver. In both cases, switching circuitry is provided to switch disconnect the GPS receiver from the main antenna when the cellular telephone is transmitting.
56 Citations
16 Claims
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1. A method for allowing a GPS receiver and a cellular telephone transceiver to share a common antenna comprising the steps of:
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coupling said GPS receiver and said cellular telephone transceiver to said antenna; and
disconnecting said GPS receiver from said antenna when said cellular telephone transceiver is transmitting. - View Dependent Claims (2, 3, 4, 5)
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6. In a cellular telephone having a GPS receiver and a quadruple band antenna, an improvement comprising:
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a switch, connecting said GPS receiver and said antenna;
wherein said switch disconnects said GPS receiver from said antenna when said cellular controlled by a signal from said cellular telephone is transmitting. - View Dependent Claims (7)
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8. A method for improving the performance of a cellular telephone equipped with a GPS receiver comprising the steps of:
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providing a quadruple band antenna;
providing a diversity antenna for said GPS receiver;
providing a controllable switch capable of switching said GPS between said quadruple band antenna and said diversity antenna; and
switching said GPS receiver from said quadruple band antenna to said diversity antenna when said cellular telephone is transmitting. - View Dependent Claims (9, 10, 11, 12, 14, 15, 16)
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13. In a cellular telephone equipped with a GPS receiver and a quadruple band antenna, an improvement comprising:
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a switch; and
a diversity antenna, coupled to said GPS receiver through said switch;
wherein said switch switches said GPS receiver from said quadruple band antenna to said diversity antenna when said cellular telephone is transmitting.
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Specification