| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna to be hardly affected from a nearby object in which impedance matching and frequency regulation are facilitated while exhibiting high degree of freedom in mounting and excellent stability . SOLUTION: The antenna comprises a feeding electrode 6 being connected with the power supply line 22 of a circuit board 20, a main radiation electrode 2 being connected with the feeding electrode 6, and a plurality of ground electrodes 3 being connected with the ground conductor 21 of the circuit board 20. The main radiation electrode 2 is arranged to be clamped by the ground electrodes 3 while spaced apart with a predetermined distance wherein a part corresponding to the main radiation electrode 2 becomes a non-ground conductor region at least partially on the surface opposing the surface where the main radiation electrode 2 is formed. The antenna 1 is mounted at such a part of the circuit board 20 facing the main radiation electrode 2 as becoming the non-ground conductor region 20a at least partially. COPYRIGHT: (C)2005,JPO&NCIPI |
