METHODS AND CIRCUITS FOR MONITORING AND REGULATING VOLTAGE ACROSS A LOW VOLTAGE DEVICE DRIVEN BY A LONG LINE CARRYING RADIO FREQUENCY SIGNALS A circuit for regulating a voltage of a high radio frequency line across a low voltage device 112 is provided. The circuit includes an input port, a high radio frequency line, a LC circuit, a peak detection circuit 108, a comparator 110, and a variable resistor 106. The input port receives a high radio frequency signal. The high radio frequency line carries the high radio frequency signal. The LC circuit boosts the high radio frequency line into a boosted high radio frequency line. The peak detection circuit 108 measures a voltage of the boosted high radio frequency line, and detects a peak of the voltage of the boosted high radio frequency line. The comparator 110 compares the voltage with a pre-defined voltage 114. The variable resistor 106 regulates the voltage of the boosted high radio frequency line based on an output of the comparator 110.
