DOI: 10.3724/SP.J.1010.2013.00531

Journal of Infrared and Millimeter Waves (红外与毫米波学报) 2013/32:6 PP.531-537

Design and experiment of high frequency circuit:fundamental wave gyroklystron amplifier with 34 GHz TE01 mode

The scattering matrix for the cavity with abrupt changes in radius in the gyroklystron was built with the modematching technique.The cavities for input,bunching and output of the Ka-band TE01 mode in the gyroklystron have been designed and fabricated.The designed amplifier,as indicated by the PIC simulation,was expected to produce 390 kW peak output power,saturated gains of 42.9 dB and 50.6% efficiency at center frequency 34 GHz and 70kV,11A annular electron beam.The full width half maximum (FWHM) bandwidth is greater than 360 MHz.The hot test shows that the fabricated gyroklystron amplifier has actually produced 301 kW peak output power,39.1% efficiency and saturated gains of 41.8 dB at center frequency 34 GHz and 70 kV,11 A annular electron beam.The full width half maximum (FWHM) bandwidth is greater than 285 MHz.

Key words:gyroklystron,beam and wave interaction,high power millimeter wave

ReleaseDate:2015-05-04 09:28:18

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