The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 01, 2000
Filed:
Mar. 19, 1998
Applicant:
Inventor:
Atsushi Sagisaka, Susono, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q / ;
U.S. Cl.
CPC ...
343771 ; 343770 ;
Abstract
A plate antenna for use with polarized waves, wherein pairs of slots are formed in a parallel-plate waveguide, feeding waveguides supply mutually orthogonal TEM waves, the pairs of slots are arranged in a V-shaped pattern, adjacent slot pairs are arranged in mutually opposite directions, the antenna beam can be tilted by adjusting the space between the pairs of slots, and the pairs of slots can induce electric fields in the same direction for horizontal and vertical TEM waves. It is then possible to transmit and receive a horizontal polarized wave and a vertical polarized wave even when the antenna beam is tilted.