Measuring reflection characteristics of r.f. components

Claim 1

APPARATUS FOR AUTOMATICALLY MEASURING AND DISPLAYING THE REFLECTION CHARACTERISTICS OF AN RF COMPONENT UNDER TEST COMPRISING: A SIGNAL SOURCE OF RF ENERGY HAVING AN OUTPUT, A SWITCH COUPLED TO THE OUTPUT OF SAID SIGNAL SOURCE FOR SELECTING VARIOUS FREQUENCY BANDS FOR TEST MEASUREMENT OF SAID COMPONENT, A HIGH DIRECTIVITY REFLECTOMETER DIRECTIONAL COUPLER, SAID REFLECTOMETER BEING PORTABLE FOR POSITIONING SAME ADJACENT THE RF COMPONENT UNDER TEST, COAXIAL LINE MEANS COUPLING THE OUTPUT OF THE SELECTOR SWITCH TO THE INPUT OF THE REFLECTOMETER, SAID REFLECTOMETER PROVIDING TWO INDIVIDUAL OUTPUT SIGNALS, ONE SIGNAL BEING PROPORTIONAL TO INCIDENT POWER FED TO SAID REFLECTOMETER FROM SAID SOURCE AND THE SECOND SIGNAL BEING PROPORTIONAL TO REFLECTED POWER FED TO SAID REFLECTOMETER BY SAID COMPONENT UNDER TEST, AUTOMATIC GAIN CONTROL MEANS FOR SENSING SAID INCIDENT POWER SIGNAL FROM SAID REFLECTOMETER FOR REGULATING SAID SIGNAL SOURCE TO MAINTAIN SAID SIGNAL SOURCE AT A GIVEN POWER LEVEL, MEANS FOR SENSING SAID REFLECTED POWER SIGNAL FROM SAID REFLECTOMETER, A CALIBRATED DISPLAY OSCILLOSCOPE RESPONSIVE TO SAID LASTMENTIONED MEANS WHEREIN THE OUTPUT OF SAID LAST-MENTIONED MEANS BEING APPLIED TO ONE PAIR OF PLATES OF SAID OSCILLOSCOPE, SAW-TOOTH GENERATING MEANS FOR SWEEPING SAID SIGNAL SOURCE OVER THE INDIVIDUAL FREQUENCIES OF ITS OPERATIVE FREQUENCY BAND, SAID SAW-TOOTH SWEEP ALSO BEING APPLIED TO THE OTHER PAIR OF PLATES OF SAID DISPLAY OSCILLOSCOPE, WHEREIN THE DISPLAY ON SAID OSCILLOSCOPE IS A SYNCHRONIZED DISPLAY OF THE REFLECTION CHARACTERISTIC OF THE COMPONENT UNDER TEST AGAINST FREQUENCY.