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RF power recovery feedback circulator

United States Patent

March 29, 2011
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
A device and method for improving the efficiency of RF systems having a Reflective Load. In the preferred embodiment, Reflected Energy from a superconducting resonator of a particle accelerator is reintroduced to the resonator after the phase of the Reflected Energy is aligned with the phase of the Supply Energy from a RF Energy Source. In one embodiment, a Circulator is used to transfer Reflected Energy from the Reflective Load into a Phase Adjuster which aligns the phase of the Reflected Energy with that of the Supply Energy. The phase-aligned energy is then combined with the Supply Energy, and reintroduced into the Reflective Load. In systems having a constant phase shift, the Phase Adjuster may be designed to shift the phase of the Reflected Energy by a constant amount using a Phase Shifter. In systems having a variety (variable) phase shifts, a Phase Shifter controlled by a phase feedback loop comprising a Phase Detector and a Feedback Controller to account for the various phase shifts is preferable.
Sharamentov; Sergey I. (Bolingbrook, IL)
The United States of America as represented by the United States Department of Energy (Washington, DC), N/A (
11/ 739,265
April 24, 2007
GOVERNMENT INTEREST The United States Government has rights in this invention pursuant to Contract No, W-31-109-ENG-38, between the U.S. Department of Energy (DOE) and the University of Chicago.