Quadrature and harmonic signal eliminator for systems using modulated carriers

Claim 1

A QUADRATURE SIGNAL ELIMINATOR COMPRISING, FIRST AND SECOND SWITCHING MEANS EACH COMPRISING TWO CURRENT-CONDUCTING ELECTRODES AND A CONTROL ELECTRODE, SAID SWITCHING MEANS PRESENTING A LOW RESISTANCE BETWEEN SAID CURRENT-CONDUCTING ELECTRODES WHEN SAID CONTROL ELECTRODE HAS A VOLTAGE SIGNAL OF A GIVEN POLARITY APPLIED BETWEEN SAID CONTROL ELECTRODE AND ONE OF SAID CURRENT-CONDUCTING ELECTRODES, MEANS ADAPTED TO BE ENERGIZED WITH MODULATED CARRIER INPUT SIGNALS CONTAINING A PREFERRED PHASE COMPONENT BEARING MODULATION INFORMATION, AN UNDESIRED PHASE COMPONENT IN QUADRATURE THEREWITH AND HARMONIC NOISE COMPONENTS FOR CONNECTING SAID INPUT SIGNALS BETWEEN ONE OF THE CURRENT-CONDUCTING ELECTRODES OF EACH OF SAID SWITCHING MEANS AND A FIXED REFERENCE POTENTIAL, A SOURCE OF SAID VOLTAGE SIGNALS CONNECTED TO APPLY SAID VOLTAGE SIGNALS BETWEEN THE CONTROL ELECTRODE AND SAID ONE CURRENT-CONDUCTING ELECTRODE OF EACH OF SAID SWITCHING MEANS SO THAT SAID SWITCHING MEANS ARE ALTERNATELY IN SAID LOW RESISTANCE STATE, SAID VOLTAGE SIGNALS BEING PHASED WITH RESPECT TO SAID PREFERRED PHASE SO THAT EVERY POLARITY REVERSAL OF SAID VOLTAGE SIGNAL COINCIDES WITH A POLARITY REVERSAL OF SAID PREFERRED PHASE COMPONENT, AND MEANS COUPLED BETWEEN THE OTHER CONDUCTING ELECTRODES OF EACH OF SAID SWITCHING MEANS AND SAID FIXED REFERENCE POTENTIAL FOR PROVIDING A VOLTAGE WHICH VARIES IN RESPONSE TO THE MODULATION INFORMATION PRESENT UPON SAID PREFERRED PHASE COMPONENT.