| 摘要 |
PROBLEM TO BE SOLVED: To provide a helical antenna can be reduced in antenna size even when an inverse-F structure is provided. SOLUTION: A helical conductor 3 is constituted of a helical portion 31 wound spirally and a connecting part 32 for connecting one end of the helical portion 31 to a conductor plate 2. One terminal of an inverse-F conductor 4 is connected to the helical conductor 3 and another terminal thereof is connected to the conductor plate 2. Then, the inverse-F conductor 4 is provided while being wound spirally coaxially with the helical portion 31 of the helical conductor 3. COPYRIGHT: (C)2010,JPO&INPIT |
