SU1396085A1 - Method of reproducing discrete phase shifts - Google Patents

Abstract

The invention can be used to create exemplary measures of phase shifts between two sinusoidal voltages in a wide range of facTOT. The purpose of the invention is to increase the accuracy of reproduction of phase shifts. The reference highly stable oscillator 1 feeds the reference channel, which includes the 4 frequency divider and the synthesizer 6. Simultaneously from the synchronized generator 2, the signal is fed through the skip unit 3 and synchronized by the end-to-end transfer signal from the 4 frequency divider to another channel, including the 5 frequency divider and the synthesizer 7. The input signals are split into two and divided by a factor p. Signals with a given phase shift by selecting the harmonics with the number n (kp), where k 1, 2, 3, ... 1 ill. .. i (L

Description

Od

with

05

Ltd

SP

: The invention relates to phase measurements in radio engineering and can be applied when creating exemplary measures of phase shifts, waiting for two per sinusoidal wave in a wide frequency range.

The purpose of the invention is to increase the accuracy (5s of reproducing phase shifts.

The drawing shows the structures ™ scheme of one of the possible devices | that implement the proposed method 4b.

; The device contains a highly stable reference oscillator 1 synchronized oscillator 2 skip block 3, dya identical divider 4 and 5 frequency Tbj (parallel action with through-transfer), synthesizers 6 and 7 clock with PLL and two output terminals 8 and: 9, At the same time, the output of the reference generator ™ 1 through the sequentially turned on synchronized generator 2, the 4 frequency divider, the synthesizer is connected to the first output terminal 8, before the output of the synchronized generator 2 through the B1 sequence): Gshtel 5 often s, the synthesizer 7 is connected to a) mount the output 9 of the device; VN1INP divider 4 frequency is additionally connected to the second input of the 3 nj onycKa block, the third input of which serves to control the transmission of pulses.

The proposed method is implemented by means of a device with discrete phase-shift interlaces in what is achieved by a division factor of 360 ° / 30 ° 12 dividers of 4 and 5 frequencies.

The method is illustrated as follows.

Supportively highly stable oscillator 1 uses the frequency synthesizer to synchronize the Olor channel through the synchronized oscillator 2j, contains divider 4, synthesizer b and clamp 8. Simultaneously from the synchronized oscillator 2, the signal is fed through the skip unit 3, which is controlled by ; oh number q (where q is equal to one of the values

O, 1, 2 J, „.. 11) and is synchronized by the end-to-end transfer signal from divider 4, to another channel containing divider 5, synthesizer 7 and output terminal 9. At the output of the dividers, end-to-end transfer signals are generated, the frequency of which depends on settings of the synchronized generator 2 and can be brought to f ,, 10 MHz using 100 series microcircuits. Through-transfer pulses from dividers 4 and 5 are fed to the inputs of pulse-phase synthesizer detectors b and 7, which are tuned to the frequency, “( ) „(1 2kjf 1), where k 1, 2 ,, .. .. With„ 10 MHz k 1 and fc 130 M and; the phase shift between the signals at terminals 8 and 9 is + q AOR with the DZ setting discrete, high installation accuracy (less than Ojl °) and low level of phase noise (less),

Thus, the proposed method provides high accuracy of reproducing discrete phase signals in the high frequency region with a low phase noise level and a small phase drift, which is ensured by the exclusion of sum and difference frequency converters during the phase shift to higher frequencies.

Formula inventions

The method of reproducing discrete phase shifts, which means that the input signals are split into two, LR times 5 times, form the specified phase shift by skipping the specified time: the input periods are divided by frequency division in one of the 5 o channels l and h y and y with tems that, in order to increase the fidelity of the reproduction, discrete phase shift shifts, from each sequence of pulses obtained after dividing, form signals with a given phase shift by extracting r from the harmonic signal with the number n (kp + 1), where k 1, 2, 3 5.,,

Claims (1)

Claim A method of reproducing discrete phase shifts, namely that ~ the input signals are forked into two, divided by p times, a predetermined phase shift is formed by skipping a predetermined number of periods of the input signal before dividing the frequency in one of the channels, and the reason is that, in order to increase the accuracy of reproduction of discrete phase shifts, signals with a given phase shift are formed from each pulse sequence obtained after dividing by extracting harmonics with the number n = (kp. + 1) from the signal, where k = 1, 2, 3, ... VNIIIPI Order 2492/47 ’Circulation 772 ,,„ ________ Signed Production ~ Polygr. ave, city of Uzhhorod, st. Project, 4