| 摘要 |
PROBLEM TO BE SOLVED: To provide an abbreviated dipole antenna which can be shared between a frequency band which is higher than a VHF band and an HF band. SOLUTION: The feeding end part of a center-fed abbreviated dipole antenna 36 used for a VHF band and the feeding end parts of the center-fed abbreviated dipole antennas 32 and 34 used for the HF bands are connected to the feeding points A and B of a feeding part 44. A coaxial cable 46 is connected to both points A and B. The part 44 includes a parallel circuit 56, consisting of a capacitor 48 and an inductor 54 and a matching capacitor 50 of an HF-band that forms a series circuit with a circuit 56. A capacitor 52 and an inductor 54 of the circuit 56 have the constants, with which they are substantially short- circuited in the HF-band and also substantially opened in the VHF band respectively. |
