System and method for providing a multiband antenna
First Claim
Patent Images
1. A wireless communications device, comprising:
- a single antenna;
a GPS impedance matching circuit, the GPS impedance matching circuit being coupled between the antenna and GPS circuitry and structured to match a GPS circuit impedance of the GPS circuitry to an antenna impedance of the antenna; and
a communications impedance matching circuit, the communications matching circuit being coupled between the antenna and a communications circuit and structured to match a communication circuit impedance of the communications circuit to the antenna impedance and to be switched between a first matching impedance for a cellular communications band circuit and a second matching impedance for a personal communications services (PCS) communications band circuit.
2 Assignments
0 Petitions
Accused Products
Abstract
A system and a method for wireless communications includes an antenna, a GPS circuit with a GPS matching circuit that is coupled to the antenna, a communications circuit with a communications matching circuit that is coupled to the antenna. The communications matching circuit is adapted to switch between different impedances, for example, to match the communications circuit with the antenna for a particular communications band or to isolate the communications circuit from the antenna. The communications matching circuit or the GPS matching circuit may be actively adapted.
-
Citations
10 Claims
-
1. A wireless communications device, comprising:
-
a single antenna; a GPS impedance matching circuit, the GPS impedance matching circuit being coupled between the antenna and GPS circuitry and structured to match a GPS circuit impedance of the GPS circuitry to an antenna impedance of the antenna; and a communications impedance matching circuit, the communications matching circuit being coupled between the antenna and a communications circuit and structured to match a communication circuit impedance of the communications circuit to the antenna impedance and to be switched between a first matching impedance for a cellular communications band circuit and a second matching impedance for a personal communications services (PCS) communications band circuit. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A wireless communications device, comprising:
-
a single antenna having an antenna impedance; GPS receiving means for receiving GPS signals via the single antenna and having a GPS receiving means impedance; GPS impedance matching means for matching the GPS receiving means impedance to the antenna impedance; communications band receiving means for receiving communications band signals via the single antenna and having a communication band receiving means impedance; adaptive matching means for adaptively matching the communications band receiving means impedance to the antenna impedance; and switching means for switching the adaptive matching means between a first matching impedance for a cellular communications band circuit and a second matching impedance for a personal communications services (PCS) communications band circuit. - View Dependent Claims (8)
-
-
9. A wireless communications device, comprising:
-
a single antenna; a matching circuit comprising; a GPS impedance matching circuit, the GPS impedance matching circuit being coupled between the antenna and GPS circuitry comprising a GPS filter and GPS receiver and structured to match the GPS circuit impedance of the GPS circuitry to an antenna impedance of the antenna; and a communications impedance matching circuit coupled between the antenna and a communications transceiver at the same time the GPS impedance matching circuit is coupled to the antenna, the communications matching circuit having a first port connected to the antenna, a second port connected to the GPS circuitry, and a third port connected to the communication transceiver and structured to match a transceiver impedance of the communications transceiver to the antenna impedance and to be switched between a first matching impedance for a cellular communications band circuit and a second matching impedance for a PCS communications band circuit. - View Dependent Claims (10)
-
Specification