Title :
Phase-locking of strongly coupled relativistic magnetrons
Author :
Sze, Henry ; Smith, R.R. ; Benford, James N. ; Harteneck, Bruce D.
Author_Institution :
Physics Int. Co., San Leandro, CA, USA
fDate :
8/1/1992 12:00:00 AM
Abstract :
Phase-locking of two strongly coupled S-band relativistic magnetrons in the gigawatt regime was achieved. A single high-voltage pulser drives the two relativistic magnetrons connected by a short waveguide of length ≃nλ/2. Equal power flows in both directions between the magnetrons. The time required to lock is ≃7 ns. Phase-locking lasts for ≃15-20 ns. Phase-locking in the π and 2π modes is demonstrated by direct phase measurement. The RMS peak power is ≃1.6 GW in the π-mode and 400 MW in the 2π-mode. Power density enhancement due to source coherence is directly measured in the radiation field. Locked phase measurements agree with phenomenological modeling of the experiment using a simple van Der Pol model
Keywords :
magnetrons; waveguide couplers; π-mode; 1.6 GW; 15 to 20 ns; 2π-mode; 400 MW; 7 ns; RMS peak power; direct phase measurement; high-voltage pulser; short waveguide; simple van Der Pol model; source coherence; strongly coupled S-band relativistic magnetrons; Coherence; Couplings; Density measurement; Load flow; Magnetic field measurement; Magnetrons; Master-slave; Microwave oscillators; Phase measurement; Power measurement;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
