SU1249469A1 - Phase calibrator - Google Patents

Abstract

The invention relates to a phase mapping technique, is intended for obtaining discrete phase shifts in a wide frequency band and can be used in phase radio engineering systems and for checking high-speed phase meters. The aim of the invention is to increase the speed of controlling the difference of the control phases of the output signals. To do this, a device containing a master oscillator 1, mixers 5, 10, tunable oscillators 4.9, phase detectors 3.8, controlled frequency divider 2, frequency dividers 7, 11 frequencies, frequency multiplier 6, third phase detector 12, third estimates 13, the third tunable oscillator 14. The equality of the output frequencies of the tunable oscillator 9 and the frequency multiplier 6 provides the channel frequency shift. The channel consists of a frequency divider 11, a phase detector 12, a mixer 13, a tunable oscillator 14. A signal is generated with a frequency t Kf, where d is the frequency of the output signal of the generator 1, K is a multiplier of the frequency multiplier 6 supplied to the mixer 10. The device does not has fundamental limitations on the frequency range and can be implemented both in the low frequency range and on the microwave. 1 il. SP N9 4 CO 4 About; o

Description

The invention relates to phase-measuring technology, is intended for obtaining discrete phase shifts in a wide frequency band and can be used in phase radio engineering systems and for checking high-speed phase-measuring devices.

The aim of the invention is to increase the speed of controlling the difference of the phases of the output signals,

The drawing shows the function diagram of the phase calibrator.

The phase calibrator contains a master oscillator 1, a controlled frequency divider 2, the first phase detector

3, the first tunable generator

4, the first mixer 5, the frequency multiplier 6, the first frequency divider 7, the second phase detector 8, the second tunable generator 9, the second mixer 10, the second frequency divider 11, the third phase detector 12, the third mixer 13 and the third tunable generator 14.

The master oscillator 1 is connected to the inputs of a controlled splitter 2 frequency, a mixer 5, a multiplier 6 frequency and a splitter 11 frequency, the output of a controlled splitter 2 frequency is connected through a series-connected phase detector 3 and a superseded generator 4 is connected to the input of a frequency divider 7, which turn, is connected to the second input of the mixer 5j, the output of the mixer 5 is connected to the second input of the phase detector 3, and the output of the frequency divider 7 is connected to one of the inputs of the phase detector 8, the output of which is connected to the control input of the rearrangement The generator is 9, and the output of the latter is connected to one of the inputs of the mixer 10, the output of which is connected to another input of the phase detector 8j, the second input of the mixer 10 is connected to the output of the tunable generator 14 and to one of the inputs of the mixer 13, the second input of which is connected to the output of the multiplier 6, and the output of the mixer 13 is connected to one of the inputs of the phase detector 12, the second input of which is connected to the output of the frequency divider 11, and the control input of the tunable generator 14 is connected to the output of the phase detector 12.

The device works as follows.

The output signal-master oscillator 1 with frequency fg is fed to a controlled frequency divider 2 and to a frequency divider 11, to a mixer 5 and a frequency multiplier 6. The outputs of the controlled splitter 2 frequency and the splitter 11 frequency select signals with a frequency, where n is the split factors of the controlled splitter 2 frequency and the splitter 11 frequency, and the output signal phase of the controlled splitter 2 frequency can me360

float on a discrete value

P

on the control signal supplied to the auxiliary (control) input of the divider. Such phase control can be implemented either by setting one of the n initial states of the controlled frequency divider, or by eliminating or supplementing the input pulses.

The output signal of a controlled frequency divider 2 is transferred by a PLL system consisting of a phase detector 3, a tunable oscillator 4

and mixer 5 per frequency (fo + -)

P

I f. ,

 or (fo), and then is divided in frequency divider 7 by (n + 1) or (n-1) corresponding. Output signal divider frequency 7 with frequency

{o - fo / n L

h t1

used as a reference for another PLL system, including a phase detector 8, a tunable oscillator 9 and a mixer 10,

The signal of the tunable oscillator 9 is the output signal of the second channel of the calibrator, and the phase state of this channel relative to the reference one is changed to non360

well - / „. H when exposed to one control at the input of the controlled divider 2 frequency. The equality of the output frequencies of the tunable generator 9 and the frequency multiplier 6 provides the channel frequency shift, consisting of a frequency divider 11, a phase detector 12, a mixer 13 and a tunable oscillator-14, forming

The signal with frequency is iK j where K is the multiplier effect of multiplier 6 frequency supplied to mixer 10, for example, at MHz, the phase calibrator has the following characteristics: output frequency Kf

It l

and 1 GHz, phase sampling) ° s is fast. The response is determined by the frequency of the signal and is in units of micro seconds, while the speed of controlling the phase difference does not depend on the frequency of the output signal at a given frequency of the oscillating generator G and the magnitude of the discrete. The phase calibrator does not have a fundamental limitation on the frequency range and can be implemented both in the low frequency range and on the microwave.

Claims (1)

Invention Formula A phase calibrator containing a master oscillator connected to the input of the first mixer, the second input of which is connected to the output of the first tunable generator, the first phase (detector, one input connected to the output of the first mixer, and the second mixer connected to the second phase detector, and the first output - with the output of the second tunable generator and the output of the calibrated signal, which is different, so that, with the aim of scoring the editor A. Shandor Compiled by M. Katanov Tehred n.Bonkalo. Proofreader S. Shekmar Order A321 / 47. Circulation 728 Subscription VNIIPI USSR State Committee: for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab., D. A / 5. Production and printing company, Uzhgorod, st. Project, 4 o S To control the phase difference of the output signals, enter a controlled frequency divider, two frequency dividers, a frequency multiplier, a third phase detector, a third mixer and a third tunable generator, while the output of the master oscillator is dinene with the inputs of the second frequency divider i, the frequency multiplier and control frequency divider, the output of which through the first phase detector is connected to the input of the first tunable generator, and the output of the frequency multiplier connected to one input of the third mixer and the output terminal the reference channel, the input of the first frequency divider is connected to the output of the first tunable generator, and the output to the second input of the second phase detector, the output connected to the input of the second tunable generator, the second input of the second mixer is connected to the output of the third tunable generator and the second input of the third mixer, the output of which connected to the first input of the third phase detector, the second input of which is connected to the output of the second frequency divider, and the output is connected to the input of the third tunable generator.