Apparatus for coupling a return signal simulator to a radar unit

Claim 1

THE COMBINATION WITH A TESTER FOR RADAR EQUIPMENT INCLUDING A TRANSPONDER RESPONSIVE TO SIGNALS FROM SAID RADAR EQUIPMENT AND GENERATING RETURN SIGNALS CORRESPONDING TO AND SIMULATING THOSE RECEIVED BY THE EQUIPMENT DURING ACTUAL OPERATION, OF A COUPLER ADAPTED TO BE CONNECTED TO SAID TESTER AND DISPOSED ADJACENT AND IN SPACED RELATION WITH SAID EQUIPMENT, SAID COUPLER INCLUDING A LENS-ANTENNAE ASSEMBLY AND POSITION-ADJUSTING MEANS THEREFOR TO ORIENT THE SIGNALS PASSING BETWEEN THE EQUIPMENT AND TESTER FOR RECEPTION AND TRANSMISSION THEREBY DURING EACH OPERATING MODE OF THE EQUIPMENT AND SIMULATED BY THE TESTER, SAID LENS-ANTENNAE ASSEMBLY INCLUDING A FIXED LENS ADAPTED TO BE DISPOSED ADJACENT SAID EQUIPMENT, A PAIR OF HORNS DISPOSED IN THE FOCAL PLANE AND AFT OF SAID LENS, MEANS FOR VERTICALLY ADJUSTING EACH OF SAID HORNS RELATIVE TO SAID LENS, AND A DRIVE MECHANISM CONNECTED TO ONE OF SAID HORNS AND OPERABLE TO ROTATE IT, A MOBILE SUPPORTING STRUCTURE, VARIABLE LENGTH CONNECTIONS BETWEEN SAID SUPPORTING STRUCTURE AND SAID LENS-ANTENNAE ASSEMBLY FOR RELATIVE MOVEMENT THEREOF IN MULTIPLE PLANES, AND SUPPORTING LEGS CARRIED BY SAID STRUCTURE AND OPERATIVE TO RENDER THE STRUCTURE IMMOBILE, SAID SUPPORTING LEGS COMPRISING A PAIR OF SPACED, VARIABLE LENGTH SUP-