Patent ID: 6825814
Filing Date: 2004-11-30
Classification: H01Q

Abstract:
An antenna comprising:(a) semi-conductor means having upper and lower surfaces, the upper and lower surfaces having a pattern of electrically conducting regions; (b) first generating means for generating conducting plasma filaments of charged carriers between the upper and lower conducting regions; (c) radio frequency feed means to selected ones of the conducting plasma filaments in order to couple radio frequency energy to or from the semi-conductor means; and (d) second generating means for selectively generating a pattern of conductive filaments between the surfaces of the semi-conductor means in order to reflect and thereby to focus an electromagnetic wavefront incident upon an edge of the semi-conductor means to at least one radio frequency feed point within the semi-conductor means; and the antenna being a planar dielectric lens antenna with controlled conductive elements forming a directive antenna for the reception or transmission of a beam of radio frequency energy in the plane of the semi-conductor means.