Variable frequency multi-phase signal generator with phase difference constant over frequency band

Claim 1

A VARIABLE FREQUENCY MULTI-PHASE CLOCK COMPRISING: AN OSCILLATOR VARIABLE IN FREQUENCY OVER A PREDETERMINED RANGE; A WIDEBAND PHASE SHIFT NETWORK COUPLED TO SAID OSCILLATOR AND OPERATING TO DERIVE FROM THE OSCILLATOR OUT-/ PUT TWO SIGNALS HAVING EQUAL AMPLITUDES AND A CONSTANT 90* PHASE SEPARATION OVER SAID FREQUENCY RANGE; A FIRS TRANSFORMER HAVING A PRIMARY WINDING AND THREE SECONDARY WINDINGS TWO OF WHICH ARE OF THE SAME POLARITY AS THE PRIMARY WINDING AND THE THIRD OF WHICH IS OF OPPOSITE POLARITY, THE PRIMARY TO SECONDARY TURNS RATIO BEING 6 FOR THE TWO SECONDARY WINDINGS OF LIKE POLARITY AND 3 FOR THE SECONDARY WINDING OF OPPOSITE POLARITY; A SECOND TRANSFORMER HAVING A PRIMARY WINDING AND TWO SECONDARY WINDINGS ONE OF LIKE AND THE OTHER OF OPPO/ SITE POLARITY RELATIVE TO THE PRIMARY WINDING, THE PRIMARY TO SECONDARY TURNS RATIO BEING 6/$$ FOR EACH SECONDARY WINDING; COUPLINGS BETWEEN SAID PHASE SHIFT NETWORK AND THE PRIMARIES OF SAID TRANSFORMERS FOR APPLYING ONE OF SAID 90* SIGNALS TO THE PRIMARY OF SAID FIRST TRANSFORMER AND THE OTHER OF SAID 90* SIGNALS TO THE PRIMARY OF SIAD SECOND TRANSFORMER; THREE OUTPUT TERMINALS; MEANS CONNECTING A FIRST TRANSFORMER SECONDARY OF POLARITY PRIMARY AND A SECOND TRANSFORMER SECONDARY OF POLARITY LIKE THE PRIMARY IN SERIES BETWEEN ONE OF SAID OUTPUT TERMINALS AND A POINT OF REFERENCE POTENTIAL; MEANS CONNECTING THE OTHER FIRST TRANSFORMER SECONDARY OF POLARITY LIKE THE PRIMARY AND THE SECOND TRANSFORMER SECONDARY OF POLARITY OPPOSITE THE PRIMARY IN SERIES BETWEEN ANOTHER OF SAID OUTPUT TERMINALS AND SAID POINT OF REFERENCE POTENTIALS; AND MEANS CONNECTING SAID FIRST TRANSFORMER SECONDARY OF POLARITY OPPOSITE THE PRIMARY BETWEEN THE REMAINING OUTPUT TERMINAL AND SAID POINT OF REFERENCE POTENTIAL.