To provide an antenna whose radiation characteristics can be enhanced while suppressing noise.
An antenna 1 includes a first element 10 connected with a GND 62 of a feeding section 60 and arranged on the same plane as a GND 72 of a wireless circuit while being isolated electrically therefrom, a second element 20 having one end connected with the first element 10 and the other being an open-end, and arranged on the same plane as the GND 72 of the wireless circuit, a third element 30 having one end connected with a power supply section 64 of the feeding section 60, and arranged substantially perpendicularly to the first element 10 in a region occupied by the first element 10, so that the one end connected with the power supply section 64 becomes the lower end, and a fourth element 40 arranged at a substantially right-angle to a line which is substantially parallel with the first element 10, and connecting the one end of the second element 20 connected with the first element 10 and the other end.
| JP2006254092 | FOLDING PORTABLE RADIO DEVICE |
| JP3631696 | PORTABLE RADIO APPARATUS |
| JPH0265499 | WIRELESS MICROPHONE EQUIPMENT |
MATSUMOTO MUNENORI
TAKAOKA AKIRA
SHIMODA TOSHIFUMI
SEKIZAWA TAKATOSHI
WATABE NOBUYA
DENSO CORP
| JP2004048471A | 2004-02-12 | |||
| JP2008011281A | 2008-01-17 | |||
| JP2008141661A | 2008-06-19 | |||
| JP2005217623A | 2005-08-11 | |||
| JP2004048471A | 2004-02-12 | |||
| JP2008011281A | 2008-01-17 | |||
| JP2008141661A | 2008-06-19 | |||
| JP2005217623A | 2005-08-11 | |||
| JPH09326632A | 1997-12-16 | |||
| JPH09326632A | 1997-12-16 |
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