| 摘要 |
The linearity of a sweep frequency generator is improved by generating a plurality of harmonics of a fundamental frequency, such harmonics being equally spaced apart in frequency, detecting the coincidences of the output frequency of the sweep generator with the individual frequencies of the various harmonics, generating a train of pulses in response to such coincidences, and controlling the frequency of the sweep frequency generator with a control voltage derived from the pulse train.
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