DUAL-BAND ANTENNA COUPLING DEVICE FOR PORTABLE RADIOPHONE Russian patent published in 2003 - IPC

FIELD: antenna coupling devices. SUBSTANCE: device has plurality of bent metal strips disposed on grounded screen. At least two of plurality of bent metal strips are electrically insulated from grounded screen to ensure radio signal supply to and from radiophone antenna. Bent insulated metal strips are used to transfer radio signals between portable radiophone antenna and first and second matching circuits designed to match portable radiophone antenna in each of respective frequency bands. Selector switch connected to output of matching circuits functions to select output of respective matching circuit for coupling with peripheral antenna. Adapter has in addition at least one ground stake mounted on grounded screen. When portable radiophone is connected to antenna through coupling device, ground stake affords electric contact with ground point on radiophone. EFFECT: enhanced coupling efficiency. 20 cl, 7 dwg