Patent ID: 7446623
Filing Date: 2008-11-04
Classification: H01P

Abstract:
1. An apparatus for converting the mode of a guided electromagnetic wave from a first field configuration to a second field configuration, the apparatus comprising: a rectangular waveguide section having a rectangular-section axis, a chamber section, and a circular waveguide section having a circular-section axis, wherein said rectangular waveguide section joins said chamber section at a rectangular-juncture and said circular waveguide section joins said chamber section at a circular-juncture such that said rectangular-section axis and said circular-section axis form a right angle; said rectangular waveguide section having a first broadwall, a second broadwall, a first sidewall, and a second sidewall collectively defining a rectangular-end opposed to said rectangular-juncture; said circular waveguide section having a circular wall defining a circular-end opposed to said circular-juncture; said chamber section having an aperture-wall joining said first broadwall at said rectangular juncture, a base-wall joining said second broadwall at said rectangular-juncture, a first offset wall joining said first sidewall at said rectangular-juncture, a second offset wall joining said second sidewall at said rectangular-juncture, and a third offset wall opposed to said rectangular-juncture; said aperture-wall including an aperture corresponding with said circular-juncture; and said first offset wall and said second offset wall of said chamber section being disposed more distally away from said rectangular-section axis than said first sidewall and said second sidewall, and said first offset wall, said second offset wall, and said third offset wall being disposed more distally from said circular-section axis than said circular wall.