WALL CONFIGURATIONS FOR GENERATING UNIFORM FIELD REFLECTION

摘要

A method of generating an RF field reflection, including positioning a grid wall in front of a conductive wall, launching RF energy at the grid wall and said conductive wall, including first and second linearly polarized orthogonal components, and highly reflecting one component from the grid wall set and allowing the other component to pass through the grid wall set with little reflection to reflect from the conductive wall.;A microwave oven includes an oven cavity, defined by flat, electrically conductive oven walls. A microwave source generates microwave energy including orthogonal linearly polarized components into the oven cavity from a port formed in a first one of the oven walls. A grid wall of conductive lines parallel to a polarization direction is spaced from a second oven wall by a distance nominally equivalent to a quarter wavelength of the microwave energy.

主权项

1. A method of generating an RF field reflection, comprising:
positioning a grid wall in front of a conductive wall, the grid wall comprising a set of linear parallel, electrically conductive lines; launching RF energy of an RF wavelength of interest at said grid wall and said conductive wall, wherein the launched microwave energy includes first and second energy components, said first and second energy components being linearly polarized components which are orthogonal to each other wherein said first component has a polarization direction parallel to the set of grid lines; reflecting at least a portion of said first polarization component of the incident energy from said grid wall set and allowing the other of the components of the incident energy which is normal to the grid wall set to pass through the grid wall set with little reflection; reflecting the other of the components of the incident energy from the conductive wall, wherein the reflected first and second components of incident energy combine to form a standing wave pattern having a more uniform electric field than what would result without the grid wall.