METHOD AND REMOTELY ADJUSTABLE REACTIVE AND RESISTIVE ELECTRICAL ELEMENTS

摘要

Apparatus and method that includes providing a variable-parameter electrical component in a high-field environment and based on an electrical signal, automatically moving a movable portion of the electrical component in relation to another portion of the electrical component to vary at least one of its parameters. In some embodiments, the moving uses a mechanical movement device (e.g., a linear positioner, rotary motor, or pump). In some embodiments of the method, the electrical component has a variable inductance, capacitance, and/or resistance. Some embodiments include using a computer that controls the moving of the movable portion of the electrical component in order to vary an electrical parameter of the electrical component. Some embodiments include using a feedback signal to provide feedback control in order to adjust and/or maintain the electrical parameter. Some embodiments include a non-magnetic positioner connected to an electrical component configured to have its RLC parameters varied by the positioner.

主权项

1. A method comprising:
providing an RF circuit in a remote environment, wherein the RF circuit includes an electrical component having a characteristic impedance at a resonance frequency of the RF circuit in the remote environment; changing a characteristic of the remote environment that affects the characteristic impedance and the resonance frequency of the RF circuit; sensing a parameter of the RF circuit and generating an electrical feedback signal based on the sensed parameter; and based on the electrical feedback signal, automatically changing the electrical component to adjust both the characteristic impedance and the resonance frequency.