| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an antenna which can be used in a wide band and in which the level of working frequency band can be adjusted freely. <P>SOLUTION: The antenna 10A is formed of an unbalanced feeding material 11 having a feeding part and a parasitic part and extending in the length direction, a conductor tube 12 for resonance located on the outside of the feeding part to wrap the outer peripheral surface thereof, and a conductor tube 13 for ground located on the outside of the parasitic part to wrap the outer peripheral surface thereof, and includes a radio wave reflection member 15 extending in the circumferential direction. In the antenna 10A, the conductor tube 12 for resonance and the conductor tube 13 for ground are fixed electrically to the unbalanced feeding material 11 via a conductor guide 14 for connection, and the feeding part has an exposed part of predetermined dimension that is exposed forward from the conductor tube 12 for resonance in the length direction. <P>COPYRIGHT: (C)2013,JPO&INPIT |
