To obtain a two-frequency-band shared antenna that has less dispersion in electrical characteristics and high reliability by eliminating soldering parts.
Two radiating conductor patterns 10, 12 each having a different resonance frequency, a grounding conductor pattern 16, a short-circuit conductor 18, and a feeding conductor 20 are formed out of a piece of a metal plate. The short-circuit conductor 18 is bent at the outside edge of a connection part 14 of the two radiating conductor patterns 10, 12, and further bent at the edge of the grounding conductor pattern 16 to short circuit the connection part 14 with the grounding conductor pattern 16. A cutout 22 of a width W wider than that of the feeding conductor 20 is provided between the radiating conductor patterns 10, 12. The feeding conductor 20 is formed in such a way that it is connected from the metal plate of the part corresponding to the cutout 22 to the connection part 14, and bent to the side of the grounding conductor pattern 16 at the inside edge of the connection part 14. Another cutout 24 is provided on the grounding conductor pattern 16 in such a way as to prevent the feeding conductor 20 bent to the side of the grounding conductor pattern from contacting the grounding conductor pattern 16.
KAMEI KOICHI
SHOJI NORIYUKI
UENO TAKAHIRO
| JPH09284023A | 1997-10-31 | |||
| JPH07303005A | 1995-11-14 |
| WO2001017063A1 | 2001-03-08 |