Development of a Phase-Controlled Magnetron Using Gate Field Emission Arrays

Document Type

Student Presentation

Presentation Date



College of Engineering


Electrical and Computer Engineering

Faculty Sponsor

Jim Browning and Don Plumlee


Gated Field Emission Arrays (GFEAs) emit electrons when a sufficient threshold voltage is reached. One application of GFEAs is the synchronization of multiple magnetrons to achieve a higher total power output through phase-locking. An experimental setup using GFEAs attempted to achieve an electron emission similar to that in a commercial cooker magnetron. A testing process has been developed to characterize GFEA die to determine whether each die is viable. A phosphor screen was used in a test chamber to study emission current density and uniformity of the GFEAs. Both emission current and leakage current were measured for I-V characterization of the die. Future work will be focused on assembling a cathode with 30 GFEAs to demonstrate the phase-locking of a magnetron.


This work is supported by the Air Force Office of Scientific Research under award #FA9550-16-1-0083

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