Microwave power generating by periodic sweep of electron beam along length of resonant waveguide

Claim 1

IN AN ULTRAMICROWAVE POWER GENERATING SYSTEM: ELECTRON BEAM FORMING MEANS TO PROJECT A BEAM OF ELECTRONS ALONG A FIRST AXIS; DEFLECTION MEANS FOR SINUSOIDALLY DEFLECTING SAID BEAM TO AND FRO IN A SINGLE BEAM DEFLECTION PLANE; MICROWAVE RESONANT MEANS FOR RECEIVING THE DEFLECTED BEAM ELECTRONS AND PERIODICALLY EXTRACTING KINETIC ENERGY FROM THE SAME BY VIRTUE OF ELECTROMAGNETIC INTERACTION BETWEEN THE BEAM ELECTRONS AND THE ELECTRIC FIELDS PROPAGATED WITHIN SAID RESONANT MEANS TO THEREBY GENERATE ULTRAMICROWAVE POWER; SAID RESONANT MEANS COMPRISING AN ELONGATED WAVEGUIDE DEVICE HAVING A LONGITUDINAL AXIS SUSTANTIALLY PERPENDICULAR TO SAID FIRST AXIS AND COINCIDENT WITH SAID BEAM DEFLECTION PLANE, WITH THE FRONT AND REAR WALLS OF SAID DEVICE LONGITUDINALLY APERTURED ALONG THE REGIONS WHERE SAID WALLS INTERCEPT SAID BEAM DEFLECTION PLANE AND WITH SAID DEVICE BEING INTERNALLY DIMENSIONED SO THAT THE ELECTRIC FIELD VECTOR OF THE ELECTROMAGNETIC FIELDS THEREIN IS ORIENTED SUBSTANTIALLY PARALLEL TO THE DIRECTION OF TRAVEL OF THE BEAM ELECTRONS; AND SAID DEFLECTION MEANS COMPRISING A DOUBLE-RIDGED WAVEGUIDE STRUCTURE HAVING A PAIR OF INWARDLY EXTENDING RIDGE MEMBERS POSITIONED ON OPPOSITE SIDES OF SAID BEAM AXIS IN A MANNER TO PROVIDE A GAP THEREBETWEEN, SAID GAP HAVING A LENGTH ALONG SAID FIRST AXIS APPROXIMATELY EQUAL TO THE PRODUCT OF THE BEAM VELOCITY AND THE BEAM TRANSIT ANGLE, AND A GAP WIDTH BETWEEN SAID RIDGE MEMBERS APPROXIMATELY CORRESPONDING TO TWICE THE BEAM DEFLECTION LATERAL DISPLACEMENT WITHIN THE GAP PLUS THE MAXIMUM BEAM DIAMETER IN THE GAP REGION.