Tuning arrangement for radio transmitter

Claim 1

AN AUTOMATIC TUNING ARRANGEMENT FOR A RADIO TRANSMITTER WHICH INCLUDES A RADIO FREQUENCY GENERATOR AND AN AERIAL CIRCUIT, SAID ARRANGEMENT COMPRISING: A REACTIVE NETWORK CONNECTED BETWEEN SAID RADIO FREQUENCY GENERATOR AND SAID AERIAL CIRCUIT, SAID REACTIVE NETWORK INCLUDING AN INDUCTANCE ELEMENT THE INDUCTANCE OF WHICH IS DEPENDENT UPON A CONTROL SIGNAL APPLIED TO SAID INDUCTANCE ELEMENT; MEANS FOR DERIVING A UNI-DIRECTIONAL VOLTAGE THE MAGNITUDE OF WHICH IS REPRESENTATIVE OF THE MAGNITUDE OF POWER FLOW IN SAID REACTIVE NETWORK; GENERATING MEANS FOR GENERATING A UNI-DIRECTIONAL REFERENCE VOLTAGE;