| 摘要 |
PURPOSE:To provide a double frequencies shared antenna which can share the frequency of a VHF band and the frequency of a UHF band with a single radiation element and furthermore decrease the number of antennas and to provide such an antenna of a communication system that is suited for the mounting on a vehicle. CONSTITUTION:A single radiation element 2 is provided together with a UHF band matching part 3 connected to the base of the element 2, and VHF band matching transformer T which is connected to the part 3 and has its winding made of a coaxial cable 9. Then the VHF output is taken out of the outer conductor 9b of the cable 9 and at the same time the UHF output is taken out of the inner conductor 9a of the cable 9 respectively. |
