| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device shared by UHF and VHF capable of obtaining a sufficient operation gain even when the antenna device is made compact.SOLUTION: An antenna device 1 is constituted by arranging an almost rectangular loop antenna 3 such that the periphery of an almost rectangular plane antenna 2 with a reflector is surrounded. The plane antenna 2 with the reflector is constituted of: a first radiation element 11a and a second radiation element 11b constituted of a fold-back dipole; a first passive element 12a and a second passive element 12b arranged between the first radiation element 11a and the second radiation element 11b; and a reflector 10 arranged behind so as to be faced to the first radiation element 11a and the second radiation element 11b and the first passive element 12a and the second passive element 12b, and notch parts 10c are formed at both sides of the reflector 10. |
