Patent ID: 7885774
Filing Date: 2011-02-08
Classification: G01R

Abstract:
1. A system for analyzing power flow in a radio frequency (RF) power transmission line, comprising: a measuring probe having a voltage sensor and a current sensor for sensing RF voltage and current signals from said transmission line, said RF voltage and current signals having waveforms; a measuring receiver connected to said voltage and current sensors for receiving said RF signals; a sampling means for directly converting said RF signals to digital signals, said digital signals comprising amplitude and phase information representing a fundamental frequency of said RF signals and a predetermined number of harmonics of said fundamental frequency; and a digital signal processing means for characterizing said amplitude and phase information so as to analyze power flow parameters and to reveal amplitude and phase angle relationships between said fundamental and harmonic frequencies; wherein said digital signal processing means reconstructs said RF voltage and current waveforms by recombining said harmonic frequencies in the proper phase relationships using said information about phase angle relationships between said fundamental and harmonic frequencies.