초록 ▼

A polarization converting surface for reflecting impinging radio frequency waves. The surface includes a ground plane and a plurality of elements disposed in an array a distance from the ground plane. Each element is preferably connected to the ground plane by a conductor, the array of elements havi

A polarization converting surface for reflecting impinging radio frequency waves. The surface includes a ground plane and a plurality of elements disposed in an array a distance from the ground plane. Each element is preferably connected to the ground plane by a conductor, the array of elements having two major axes associated therewith. The elements have a first bandwidth corresponding to a first range of frequencies were a first reflection phase falls between -.pi./2 and +.pi./2 in a first one of said two major axes and a second bandwidth corresponding to a second range of frequencies were a second reflection phase falls between -.pi./2 and +.pi./2 in a second one of said two major axes. The first and second bandwidths partially overlap and preferably an upper half of one of the bandwidths overlies a lower half of the other one of the bandwidths.

대표청구항 ▼

1. A surface for reflecting and changing polarization of a radio frequency beam, the surface comprising:(a) a ground plane; (b) a plurality of conductive elements disposed in at least one array and spaced from the ground plane, the at least one array being spaced a distance which is less than a wave

1. A surface for reflecting and changing polarization of a radio frequency beam, the surface comprising:(a) a ground plane; (b) a plurality of conductive elements disposed in at least one array and spaced from the ground plane, the at least one array being spaced a distance which is less than a wavelength of the radio frequency beam, the at least one array having two major axes associated therewith; and (c) the conductive elements being arranged with different sheet capacitances in said two major axes.