Agilent Technologies, Inc.
COUPLED-AMPLIFIER MULTI-FREQUENCY CIRCUIT TOPOLOGIES APPLICABLE TO MASS SPECTROMETER RADIO-FREQUENCY DRIVE SYSTEMS

Abstract:

A circuit and method for providing high-voltage radio-frequency (RF) energy to an instrument at multiple frequencies includes a plurality of inputs each configured to receive an RF voltage signal oscillating at a corresponding frequency, and a step-up circuit for generating magnified RF voltage signals based on the received RF voltage signals. The step-up circuit includes an LC network operable to isolate the RF voltage signals at the plurality inputs from one another while preserving a voltage magnification from each input to a common output at each of the corresponding frequencies.