Patent ID: 7209718
Filing Date: 2007-04-24
Classification: H03F

Abstract:
1. An arrangement for amplifying and transmitting an input signal, comprising: a transmitter; a load coupled to the transmitter via a transmission line; a detector circuit being coupled to two measuring points on the transmission line between the transmitter and the load for the purpose of measuring two voltage amplitudes at said two measuring points, one of said voltage amplitudes representing the output voltage and the other representing the output current, the detector circuit adapted to deliver as a detector circuit output, a voltage or current on the transmitter output having a value closest to its respective maximum value at that moment in time; a control system for receiving the detector circuit output signal and adapted to feed back the detector circuit output signal to the transmitter, the control system further adapted to regulate the output signal of the transmitter; a quadrature feedback-coupled regulating system for regulating the transmitter output signal; a decision circuit included in the detector circuit adapted to identify the value of the voltage and the current on the transmitter output and select which of the voltage or the current on the transmitter output has the greatest amplitude; and a switch responsively coupled to an output of the decision circuit, the switch adapted to couple the selected transmitter output signal to said regulating system as a real value.