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:
Jan. 29, 2008
Filed:
Nov. 14, 2003
Ola Forslund, Sundbyberg, SE;
Ola Forslund, Sundbyberg, SE;
Saab AB, Linköping, SE;
Abstract
The invention relates to a method for conversion of waveguide modes from a mode of type TMto mode of type TEfor transmission of power within the microwave range. The invention also relates to a mode-converting arrangement and an antenna arrangement with such a mode converting arrangement. The mode-converting arrangement comprises an incoming waveguide () for reception of power of the type TM-an outgoing waveguide () for outputting power of mode type TEand a waveguide-mode-converting section (-) arranged between the incoming and outgoing waveguides. According to the invention, incoming power of mode type TMis divided in an input section () between two or more waveguides with cross-sections in the shape of circle sectors. Thereafter, the divided power is phase-shifted by the waveguides in a subsequent phase-shift section () being designed with cross-sections that are essentially in the shape of circle sectors with different radii, after which the waveguides are changed into a common essentially circular waveguide () that emits an outgoing power of mode type TE. By means of the invention, a relatively simple solution is produced that can cope with high powers.