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High power, magnet-free, circulator using angular-momentum biasing of a resonant ring

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-SC0015723
Agency Tracking Number: 223702
Amount: $150,000.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: 25
Solicitation Number: DE-FOA-0001417
Solicitation Year: 2016
Award Year: 2016
Award Start Date (Proposal Award Date): 2016-06-13
Award End Date (Contract End Date): 2017-03-12
Small Business Information
690 Port Drive
San Mateo, CA 94404-1010
United States
DUNS: 968627539
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Jeff Neilson
 (650) 926-4403
Business Contact
 Robert Ives
Title: Dr.
Phone: (650) 312-9575
Research Institution
 SLAC National Accelerator Laboratory
 A Woo
2575 Sand Hill Road 2575 Sand Hill Road
Menio Park, CA 94025-7015
United States

 (650) 926-2370
 Federally Funded R&D Center (FFRDC)

There is a continuing need for high power circulators to protect the next generation of high power RF sources from waveguide reflections that can destroy the device. Currently, the power level of circulators is limited by the materials, specifically ferrites that provide the required non-reciprocal operation. New approaches are required that use materials capable of very high power operation. Statement of how this problem or situation is being addressed
Calabazas Creek Research Inc. and SLAC National Accelerator Laboratory propose to explore a new approach that avoids ferrites and other materials unable to support high power operation. The new approach uses coupled cavities and RF modulation to provide the required performance. Commercial Applications and Other Benefits High power circulators are required whenever high power RF sources are driving loads where reflected power may occur. This includes RF sources for high energy accelerators and colliders. Circulators are also used in some high power radar applications and are a key component of a magnetron-based power source being developed for accelerators. Key Words. Circulator, ferrites, piezoelectric, RF source, accelerator Summary for Members of Congress The proposed program will develop a device to protect high power RF sources from destructive reflections in accelerator and collider applications. This will allow an increase of source power, reducing cost for these systems.

* Information listed above is at the time of submission. *

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