Abstract
ABSTRACTResults of the design and development work on wide band signal generators using reflex klystron and velocity modulated oscillator valves in coaxial cavity resonators are reported. For comparison, latest developments and trends in commercial signal generators are mentioned. Two models of signal generators built by the authors are described. One of them uses the velocity modulated oscillator valve (3–4·2 Gc/s.) and the other uses a reflex klystron (2–4·2 Gc/s.). Details of electronic circuits oscillator cavity, tuning, tracking modulation and output calibration are given. These signal generators have a calibrated frequency scale, a frequency stability ±0·002 per cent after 30 min. warm up, output by a calibrated (0–120 db.) attenuator, built in power meter, modulation square wave 200–4000 c/s. frequency modulation in case of reflex klystron and low R.F. leakage.
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