| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compact and inexpensive dual sleeve antenna which is easy to adjust an impedance and performs a transmission/reception at two frequencies under a much wider bandwidth and with high sensitivity. <P>SOLUTION: In the dual sleeve antenna, exposed portions of an insulator and an external conductor are provided sequentially from an end face of a coaxial cable to a cable body 1. In that case, an exposed portion 1b of the insulator is passed through a first conductor plate 2a crossing a cable axis and a first narrow conductor 2c connected to the first conductor plate 2a is extended toward the cable body 1 along with both side faces of the insulator 1b. On the other hand, an exposed portion 1c of the external conductor is passed through a second conductor plate 3a crossing the cable axis and held, a second narrow conductor 3c connected to the second conductor plate 3a is extended toward the cable body 1 along with both side faces of a sheath 1d and further, the first narrow conductor 2c and the second narrow conductor plate 3c are connected to each other. <P>COPYRIGHT: (C)2008,JPO&INPIT |
