Session RP1 - Poster Session VIII.
POSTER session, Thursday afternoon, October 30
Fran Hill Southeast Exhibit Hall, ACC
Nonrelativistic magnetron (4 kV, 300 mA, 2.45 GHz, kW microwave power) experiments are performed on commercial oven magnetrons for an in-depth investigation of crossed-field injection-locking and noise. Injection-locking is demonstrated by utilizing an oven magnetron as a reflection amplifier. Microwave noise generation is explored as a function of injected signal and cathode conditions. Our experiments confirm that the microwave noise can be reduced when the cathode heater power is decreased. We also investigate the influence of reducing the cathode heater power on the microwave output power and magnetron efficiency. Noise reduction is also observed when a weak, low noise microwave signal is injected into the reflection amplifier. Experimental and simulation results will be reported for innovative, new techniques for reduction of microwave noise in magnetrons.