Antenna system for a wireless communication device
A wireless communication device such as a cellular telephone handset is disclosed including a housing having a transceiver circuit disposed therein. An internal antenna is also disposed within the housing which is RF connected to the transceiver circuit. An external, retractable antenna is mounted on the housing and is selectively movable between a retracted position and an extended position. The external, retractable antenna is RF connected to the transceiver circuit. When the external antenna is retracted, the internal antenna functions as a primary antenna. Should the need arise, the external antenna may be extended to improve the quality of the radio signals.
1. A wireless communication device, comprising:
a housing including a front housing member and a back housing member;
said front and back housing members having upper and lower ends;
a printed circuit board positioned in said housing adjacent said front housing member which functions as a transceiver circuit;
an internal antenna positioned in said housing adjacent said upper end of said back housing member; and
an external, retractable antenna movably mounted on said internal antenna and being movable between a retracted position and an extended positioned with respect thereto;
said internal antenna being in circuit with said transceiver circuit when said external antenna is in its said retracted position;
said internal antenna being out of circuit with said transceiver circuit when said external antenna is in its said extended position;
said external antenna being in circuit with said transceiver circuit when in its said extended position; and
said external antenna being out of circuit with said transceiver circuit when in its said retracted position;
wherein said internal antenna has a front and back sides and wherein said back side of said internal antenna has a remote RF port formed in its back side; said back housing member having an opening formed therein which communicates with said remote RF port.
2. The wireless communication device of claim 1 wherein a switching mechanism selectively connects either said external antenna or said internal antenna to said transceiver circuit.
3. The wireless communication device of claim 1 wherein said internal and external antennas are electrically disconnected from one another at all times.