| US 7,486,238 B2 | ||
| Circular polarized wave antenna and method for designing same | ||
| Tomoyuki Ogawa, Hitachi (Japan); and Ken Takei, Hitachi (Japan) | ||
| Assigned to Hitachi Cable, Ltd., Tokyo (Japan) | ||
| Filed on Jun. 01, 2007, as Appl. No. 11/806,664. | ||
| Claims priority of application No. 2006-190135 (JP), filed on Jul. 11, 2006. | ||
| Prior Publication US 2008/0012772 A1, Jan. 17, 2008 | ||
| Int. Cl. H01Q 1/38 (2006.01) | ||
| U.S. Cl. 343—700MS [343/853] | 10 Claims |
| 1. A circular polarized wave antenna, comprising:
a group of metallic conductors; and
a power feed point formed at one of the metallic conductors;
wherein an absolute value of a sum of projections of an electric current induced on the metallic conductors in a first axis
and an absolute value of a sum of projection of the electric current in a second axis that is spatially orthogonal to the
first axis are approximately equal to each other, and an absolute value of a difference between arguments of the sums of the
projections in the first and second axes is approximately 90°.
|