CYCLOTRON WAVE AMPLIFICATION USING SELF GENERATED PUMP POWER.
CHALMERS UNIV OF TECHNOLOGY GOTEBORG (SWEDEN) RESEARCH LAB OF ELECTRONICS
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This report describes measurements on an amplifier system consisting of two cascaded Adler tubes with a traveling wave tube TWT to amplify the pump signal. The latter was produced by the signal itself in the quadrupole of one of the Adler tubes. By so doing the pump voltage was phase locked to the signal. Two cases were investigated. In one case the pump power was generated in the first Adler tube, amplified in the TWT and then used for pumping the second Adler tube. The dB gain of this system is a linear function of the input signal power. In the other case the pump power was taken from the second Adler tube, amplified in the TWT and then fed back to pump the first Adler tube. Now the dB gain becomes a linear function of the output power. A theoretically predicted hysteresis effect was experimentally verified. Author
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