| 摘要 |
A CRADLE CAN BE MOUNTED IN A VEHICLE, OR OTHER SUITABLE LOCATION, FOR SUPPORTING A WIRELESS DUAL-FREQUENCY TELEPHONE THAT INCLUDES AN ANTENNA. THE CRADLE INCLUDES A PLASTIC HOUSING AND A GROUND PLANE DISPOSED IN THE HOUSING. A TROUGH-SHAPED FEED COUPLER ELEMENT IS ELECTRICALLY CONNECTED TO MATCHING CIRCUITS AND AN INPUT/OUTPUT CONNECTOR. A FIRST PARASITIC COUPLER ELEMENT IS ALINGED WITH THE FEED COUPLER ELEMENT, AND CONNECTED TO THE GROUND PLANE, AND ELECTROMAGNETICALLY COUPLES SIGNALS HAVING A FIRST FREQUENCY TO AND FROM THE ANTENNA. TOGETHER, THE ELEMENTS HOLD THE ANTENNA OF THE TELEPHONE. ALSO, A SECOND PARASITIC ELEMENT IS DISPOSED ADJACENT THE FEED COUPLER ELEMENT FOR ELECTROMAGNETICALLY COUPLING SIGNALS TO AND FROM THE ANTENNA, THAT HAVE A SECOND FREQUENCY. IF DESIRED, THE GROUND PLANE IS ESTABLISHED BY A FIRST CONDUCTIVE BOARD AND A SECOND CONDUCTIVE BOARD ELEVATED ABOVE THE FIRST BOARD.
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