Polarization converter comprising metal rods mounted on a torsion wire that twists when rotated

Claim 1

WAVEGUIDE APPARATUS FOR ROTATING THE PLANE OF POLARIZATION OF WAVE PROPAGATING THEREIN IN THE TE1,1 MODE, COMPRISING A HOLLOW CIRCULAR WAVEGUIDE, A FIRST MOUNTING MEMBER WITHIN SAID WAVEGUIDE FIXED TO THE WAVEGUIDE WALLS, A SECOND MOUNTING MEMBER WITHIN SAID WAVEGUIDE SPACED ALONG SAID WAVEGUIDE FROM SAID FIRST MOUNTING MEMBER AND MOUNTED TO SAID WAVEGUIDE TO PERMIT ROTATABLE MOVEMENT ABOUT THE AXIS OF THE WAVEGUIDE WITH RESPECT TO THE POSITION OF THE FIRST MOUNTING MEMBER, A TORSION WIRE EXTENDING AXIALLY WITHIN SAID WAVEGUIDE HAVING A FIRST END SECURED TO SAID FIRST MOUNTING MEMBER AND A SECOND END SECURED TO SAID SECOND MOUNTING MEMBER, SAID TORSION WIRE TWISTING WITH ROTATION OF SAID SECOND MOUNTING MEMBER WITH RESPECT TO SAID FIRST MOUNTING MEMBER, AND A PLURALITY OF METAL RODS FASTENED CENTRALLY TO SAID TORSION WIRE AT SPACED INTERVALS THEREALONG AND HAVING ENDS SPACED FROM THE WALLS OF SAID WAVEGUIDE, SAID METAL RODS LYING IN A PLANE IN A PREDETERMINED POSITION OF SAID SECOND MOUNTING MEMBER WITH RESPECT TO SAID FIRST MOUNTING MEMBER AND HAVING RELATIVE ANGULAR DISPLACEMENT BETWEEN ADJACENT ONES OF SAID RODS AS SAID SECOND MOUNTING MEMBER IS ROTATED FROM SAID PREDETERMINED POSITION.