SU1564573A1 - Apparatus for measuring characteristics of electrically retuned mcw-generators - Google Patents

Abstract

The invention can be used to control characteristics in the process of setting up and adjusting microwave generators. The aim of the invention is to improve the accuracy of measuring the non-linearity of the modulation characteristic of the generator - by increasing the accuracy of fixing the instant of time of the generated pulses when the frequency of the generator under study is tuned to the indicated value. To do this, a crystal oscillator 1, a frequency multiplier 2, a frequency detector 6, a frequency driver 7, a pulse phase detector 10, a filter 11, a phase detector 12 and a pulse generator 13 are entered into the device. The frequencies of the modulation characteristics of the generator 3 under study are determined by fixed, strictly defined frequency intervals determined by the stability of the crystal oscillator 1. The frequency of the generator 3 under study is dependent on the control linear-varying voltage displayed on the oscilloscope display 15, the second input of which is connected 14 pulse number to voltage converter. In addition, the device contains a mixer 4, the amplifier 5 intermediate frequency, the switch 8 and the integrator 9. 2 Il.

Description

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Claims (1)

Claim A device for measuring the characteristics of electrically tunable microwave generators, comprising converters; an indicator of the number of pulses per voltage connected to vertically deflecting plates of the oscilloscope indicator 45, and terminals for connecting the studied generator, the first of which is connected to the first input of the mixer, the output of which is connected to the input of the intermediate frequency amplifier, the output of the switch is connected to the first input of the integrator, the output of which connected to the second terminal for connecting the generator under study; and to horizontally deflecting plates55 to us an oscilloscope indicator, characterized in that, for the purpose of improving the accuracy of measuring the non-linearity of the modulation characteristic of the investigated generator, a quartz generator, a frequency multiplier, a clock generator, a frequency detector, a pulse-phase detector, a filter, a phase detector and a pulse shaper are introduced into it, while the first output of the crystal oscillator is connected to the second through a frequency multiplier the input of the mixer, and the second output of the quartz jq generator is connected to the shaper of clock frequencies, the first input of the frequency detector is connected to the first output dividing the intermediate frequency, and the output is connected to the first: 15 input of the switch, the first input of the pulse-phase detector I is connected to the second output of the intermediate frequency amplifier, and the output through the filter is connected to the first input of the phase detector, the output of which is connected to the second input of the switch and through a pulse shaper to the input of the pulse-to-voltage converter, second integrator inputs, a frequency detector, a pulse-phase detector, a phase detector, a pulse-to-voltage converter and a third the input of the switch is connected to the corresponding outputs of the shaper of clock frequencies.