Patent ID: 6952146
Filing Date: 2005-10-04
Classification: H01P

Abstract:
1. A variable waveguide attenuator, comprising: at least one waveguide attenuator cavity; a fluidic dielectric at least partially disposed within at least one subcavity within said waveguide attenuator cavity, said fluidic dielectric having a loss tangent, a permittivity and a permeability; at least one composition processor adapted for changing an electrical characteristic and a physical characteristic of the variable waveguide attenuator by manipulating said fluidic dielectric to selectively vary at least one parameter selected from the group consisting of a volume and a shape, and to selectively vary at least one parameter selected from the group consisting of said loss tangent, said permittivity and said permeability of the fluidic dielectric; and a controller for controlling said composition processor in response to a waveguide attenuator control signal.