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Circuit design of a wideband W-band gyroklystron amplifier for radar applications

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3 Author(s)
Blank, M. ; Vacuum Electron. Branch, Naval Res. Lab., Washington, DC, USA ; Danly, B.G. ; Levush, B.

A high power W-band gyroklystron amplifier has been designed as the driver for a millimeter wave radar system currently under development at the Naval Research Laboratory. A time dependent, nonlinear theory was used to design the interaction circuit. Studies to determine the optimal stagger tuning and cavity Q values were performed. Circuit stability was investigated and the effect of beam parameter variation on circuit performance was also studied. The effects of mechanical tolerances and deviation of circuit dimensions from design values were examined. Simulations show that a four cavity circuit operating in the TE011 mode at the fundamental of the cyclotron frequency can achieve 80.2 kW peak output power and 20.6% efficiency at a center frequency of 94.0 GHz with 740 MHz full width half maximum (FWHM) bandwidth for a 65 kV, 6 A electron beam

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Plasma Science, IEEE Transactions on  (Volume:26 ,  Issue: 3 )