| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high performance antenna assembly for a single band or a dual band capable of accelerating reduction in height. <P>SOLUTION: On the surface of a dielectric substrate 12 standing on a ground conductor plate 11, a first meandering radiation conductor 13 and a second radiation conductor 14 are arranged symmetrically while coupling the lower ends through a coupling part 15, and a third radiation conductor 18 extending linearly along the symmetry axis is provided between the radiation conductors 13 and 14. A capacitive conductor 17 is arranged on the dielectric substrate 12 substantially in parallel with the ground conductor plate 11 and connected with the upper end of the radiation conductors 13, 14 and 18. The first and second radiation conductors 13 and 14 are set to resonate when high frequency power of a first frequency f<SB>1</SB>is fed to the coupling part 15, and the third radiation conductor 18 is set to resonate when high frequency power of a second frequency f<SB>2</SB>higher than f<SB>1</SB>is fed to the coupling part 15. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
