To provide an antenna for portable radio in which broadening of frequency band can be realized without making the location of an antenna element higher, and moreover, deviation of resonance frequency can be suppressed even if it has a structure of changing the location of a ground part.
A planar antenna 10 is mounted to a portable radio such as a portable telephone, and it is connected to a printed circuit board built in the portable radio and the ground parts 32, 23 of an LCD. The whole of the planar antenna is in a U-shape. The planar antenna is provided with a first radiating element 11 of which the main part is extended linearly and like a belt from its one end, a coupling adjusting part 12 provided adjacently to the first radiating element 11 and on the same plane, and a second radiating element 12 connected to the end of the first radiating element 11 and the coupling adjusting part 12. Further, a power feeding terminal member 43 is provided in the vicinity of the other end of the first radiating element 11. A ground connection part 42 for connecting a substrate ground 32 is provided at the end of the second radiating element 13.
| JP3644193 | ANTENNA SYSTEM |
| WO/2024/098969 | ANTENNA APPARATUS AND ELECTRONIC DEVICE |
| WO/2022/160974 | ANTENNA, DETECTION APPARATUS, RADAR AND TERMINAL |
SUGIYAMA TAKEHIRO
KATAOKA SHIN
TAKABA SHINICHI
