APPARATUS TO CREATE UNIFORM ELECTRIC-FIELD AND MAGNETIC-FIELD DISTRIBUTION AS METAMATERIAL ZEROTH-ORDER RESONANCE IN WAVEGUIDE AND CAVITY AND LEAKY-WAVE WAVEGUIDE ANTENNA FOR HIGH DIRECTIVITY RADIATION

摘要

An apparatus to create uniform electric and magnetic-field distribution as zeroth-order resonance in a waveguide and a cavity according to an embodiment of the present invention includes a rectangular waveguide with a rectangular-shaped cross section comprising a cavity in the inside, and a conductive helical wire inserted into the cavity of the waveguide, wherein the main body of the conductive helical wire does not contact the inner surfaces of the waveguide at a predetermined gap, and both ends of the conductive helical wire are short-circuited to the inner surface of the waveguide, so as to create a uniform electric field and magnetic field throughout the entire waveguide.