| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a two-frequency shared antenna in which the feeding points of two patch antenna elements and the ground are compactly configured. <P>SOLUTION: A ground plate 4 having two ground main surfaces 4a and 4b and a patch antenna element 6 having two antenna main surfaces 6a and 6b are provided, and the antenna main surface 6b is arranged almost parallel with the ground main surface 4a of the ground plate 4 at an interval. An antenna main surface 20b of a patch antenna element 20 having two antenna main surfaces 20a and 20b is arranged almost parallel with the ground main surfaces 4a and 4b and the antenna main surfaces 6a and 6b at an interval from the antenna main surface 6a. A feeding pin 18 is derived from a feeding point 16 of the patch antenna element 6 to the ground main surface 4b side of the ground plate 4. End parts of a conductive spacer 8 are brought into contact with the antenna main surface 6b and the ground main surface 4a, and a female screw 10 is formed along the length direction of the conductive spacer 8. An insulating male screw 12 is screwed into the female screw 10 to connect the spacer 8 to the ground plate 4. A through hole 14 is formed in the male screw 12, and a feeding pin 28 is derived from a feeding point 26 of the patch antenna element 20 to the ground main surface 4b side of the ground plate 4 through the through hole 14. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
