Selective directional slotted waveguide antenna

Claim 1

A MICROWAVE ANTENNA ARRAY FOR AN AIRCRAFT COMPRISING, AT LEAST FOUR PARALLEL LINEAR ARRAYS POSITIONED IN A PLANE, SAID LINEAR ARRAYS BEING COMPOSED OF RECTANGULAR WAVEGUIDE SECTIONS PROVIDED WITH MICROWAVE RADIATORS ALONG ONE FACE THEREOF, A FIRST FEED WAVEGUIDE CONNECTED TO ALTERNATE ONES OF SAID LINEAR ARRAYS AT ONE END THEREOF, THE CONNECTIONS BETWEEN THE ENDS OF SAID LINEAR ARRAYS AND SAID FIRST FEED WAVEGUIDE BEING SPACED ALONG THE LENGTH THEREOF BY A DISTANCE WHICH DEPARTS FROM THE WAVELENGTH OF THE ENERGY IN THE FIRST FEED WAVEGUIDE BY A SELECTED INCREMENT, A SECOND FEED WAVEGUIDE CONNECTED TO THE REMAINING ONES OF SAID LINEAR ARRAYS AT ENDS WHICH ARE OPPOSITE TO THE ENDS OF THE ALTERNATE LINEAR ARRAYS CONNECTED TO SAID FIRST FEED WAVEGUIDE, THE CONNECTIONS BETWEEN THE ENDS OF THE REMAINING ONES OF SAID LINEAR ARRAYS AND SAID SECOND FEED WAVEGUIDE BEING SPACED ALONG THE LENGTH THEREOF BY A DISTANCE WHICH DEPARTS FROM THE WAVELENGTH OF THE ENERGY IN THE SECOND FEED WAVEGUIDE BY SAID SELECTED INCREMENT, MEANS FOR ALTERNATELY APPLYING MICROWAVE ENERGY TO SAID FIRST AND SECOND FEED WAVEGUIDES, AND MEANS FOR ALTERNATELY APPLYING SAID MICROWAVE ENERGY TO OPPOSITE ENDS OF SAID FIRST AND SECOND FEED WAVEGUIDES.