Coupled-amplifier multi-frequency circuit topologies applicable to mass spectrometer radio-frequency drive systems
AssigneeAgilent Technologies, Inc.
InventorMichael J. SCHOESSOW
Life of this patent
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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.
Claims20
A circuit for providing high-voltage radio-frequency (RF) energy to an instrument at multiple frequencies, comprising:
- 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 comprising 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.
An instrument comprising:
- an ion-manipulating structure;
- an ion source for providing ions to the ion-manipulating structure;
- a detector coupled to the ion-mainpulating structure for detecting ions;
- and
- a power source for providing high-voltage RF energy to the ion-manipulating structure, the power source including:
- first and second RF energy sources configured to provide RF voltage signals at first and second corresponding frequencies, respectively;
- and
- a step-up circuit having first and second inputs respectively coupled to the first and second RF energy sources, the step-up circuit configured to generate magnified RF voltage signals based on the RF voltage signals provided by the first and second RF energy sources at the first and second frequencies, the step-up circuit comprising an LC network operable to isolate the RF voltage signals at the first and second inputs from one another while preserving a voltage magnification from each input to a common output at each of the corresponding frequencies.
A method for generating high-voltage radio-frequency (RF) energy for an instrument at multiple frequencies, comprising:
- providing an RF voltage signal at each of a plurality of inputs, each RF voltage signal oscillating at a corresponding frequency;
- and
- generating magnified RF voltage signals, based on the provided RF voltage signals, using a step-up circuit having 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.
Dependencies are inferred from the claim text.