Automatic tuning of cavity klystron using sampled RF output
AssigneeHarris Corporation
InventorJames C. Barton
Life of this patent
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Abstract
A processor-controlled drive motor system for tuning a cavity klystron monitors the output (amplitude-vs-frequency) of the klystron and compares that monitored performance output with an intended amplitude-vs-frequency profile. Differences between the two characteristics are employed by the processor to generate a set of tuning cavity control signals through which respective stepping motors for displacing each cavity tuning slug are driven. The processor iteratively adjusts the cavity tuner control signals in accordance with a prescribed kylstron tuning program until the monitored amplitude response is within a prescribed tolerance of a preestablished characteristic stored in memory.
Claims12
For use with a microwave power source containing a plurality of tuning elements through which the operation of the microwave power source is controlled, a method of adjusting the tuning elements and thereby causing the output of the microwave power source to effectively conform with an amplitude versus frequency response that has a prescribed shape over a prescribed bandwidth comprising the steps of:
- (a) monitoring the output of said microwave power source and generating an electrical signal representative of the monitored output;
- and
- (b) automatically adjusting at least one of said tuning elements until the electrical signal generated in step (a) indicates that the output of said microwave power source has an amplitude versus frequency response having said prescribed shape over said prescribed bandwidth.
For use with a microwave power source containing a plurality of tuning elements through which the operation of the microwave power source is controlled, an arrangement for automatically adjusting the tuning elements and thereby causing the output of the microwave power source to effectively conform with an amplitude versus frequency response that has a prescribed shape over a prescribed bandwidth:
- first means, coupled to the output of said microwave power source, for monitoring the output of said microwave power source and generating a first output signal representative of the amplitude versus frequency response of said power source of over said prescribed bandwidth;
- and
- second means, coupled to receive the first output signal generated by said first means and to said tuning elements, for adjusting at least one of said tuning elements until said amplitude versus frequency response monitored by said first means has said prescribed shape over said prescribed bandwidth.
Dependencies are inferred from the claim text.