SU1218490A2 - Device for transmission of information with frequency modulation - Google Patents

Abstract

The invention relates to radio engineering. In relation to the main auth. No. 675618 optimizes the accuracy and reliability of the transmission by reducing the level of out-of-band emissions. The device contains a frequency synthesizer 1, a frequency manipulator (FM) 2, a synchronizer 3, an information conversion unit (BPI) 4, a phase discriminator 5, a driver of control signals (FUS) 6, a frame combining unit 7, two phase manipulators 8, 9, the control unit (CU) 10, the control unit 11, two delay elements 12, 13 and two frequency multipliers by two 14, 15; To ensure that the output signal of the device does not have phase discontinuities, RF oscillations with frequencies f and f from the outputs of frequency synthesizer 1 are fed to the inputs of FM 2 via phase manipulators 8 and 9, controlled by control unit 10, while the frequency manipulation occurs at those times when the phases of the original HF oscillations coincide or are opposite to each other. HF oscillations through the phase discriminator 5 and FUS 6 are fed to the frequency multipliers by two 14, 15 and through. delay element 13 - nA clock input of the control unit 11, which is controlled by the CU 10. Some double frequency pulses trigger the synchronizer S 3, which synchronizes the operation of § IN5 00 4 CO Ph f

Description

BPI 4 and block combining frame 7, eliminating the delay occurring in BPI A, and controlling FM 2. Others: the double frequency pulses go to another input of the block combining frame 7 and through the delay element 12 to the clock input of the CU 10, the signal input which is connected to the output

This invention relates to radio engineering; It can be used in discrete information transmission systems and is complementary to the main one by auth. No. 675618.

The aim of the invention is to improve the accuracy and reliability of the transmission by reducing the level of out-of-band emissions.

FIG. 1 shows a structural electrical circuit of the proposed device; in fig. 2 - time diagrams.

A device for transmitting information with frequency manipulation contains a frequency synthesizer 1, a frequency manipulator 2, a synchronizer 3, an information conversion unit A, a phase discriminator 5, a driver 6 for control signals, a frame alignment unit 7, first B and second 9 phase manipulators, control unit 10, control unit 11, first 12 and second 13 delay elements, first 14 and second 15 frequency multipliers by two.

The controler block contains the adder 16 modulo two and the element And 17.

The control unit contains the first 18 and second 19 triggers, the first 20 and second 21 elements AND, the inverter 22, the element OR 23.

The device works on the screen.

From the output of the synthesizer 1 frequencies to the inputs of the frequency manipulator 2, through the phase manipulators 8 and 9 and to the inputs of the phase discriminator 5, high-frequency oscillations with frequencies G are received (Fig. 2, a and 2,6).

 At the output of the phase / percolator 5 forms a direction (Fig. 2, c), the zeros of which correspond to the moments

block 7 and a setup input to the output of control unit 11. The goal is achieved by introducing phase manipulators 8 and 9, control unit 10, control unit 11, delay elements 12, 13, and frequency multipliers two two, 2 or more .

14

15

2 3, p.

zero phases of high-frequency oscillations with frequencies (and f.

At these moments, the driver 6 of the control signals generates pulses

(Fig. 2, d), which arrive at the inputs of the multipliers 14 and 15 frequencies and, through the delay element 13, to the clock input of the control unit 11.

The outputs of the multipliers 14 and 15

frequencies receive a clock sequence of pulses (Fig. 2, e) with doubled frequency. These pulses trigger synchronizer 3, which synchronizes the operation of the block.

4 information conversions and frame alignment unit 7. The frame alignment unit 7 is necessary to eliminate the delay occurring in information conversion unit 4, where frames of the transmitted information are generated, and generates a signal (FIG. 2, e) controlling the frequency manipulator 2. Frequency manipulation occurs at times when yes phases

the original high-frequency oscillations (Fig. 2, a and 2, b) with frequencies f., and f coincide or are opposite one another.

In order to ensure that the output signal of the device does not have phase breaks, high frequency oscillations with frequencies f vi f from the outputs of synthesizer 1 frequencies are supplied to the inputs of frequency manipulator 2 through the corresponding first 8 and second 9 phase manipulators. The phase manipulators 8 and 9 are controlled by the control unit 10. A delayed sequence of pulses (Fig. 2, g) arrives at the clock input of block 10 with a doubled frequency of the sequence, obtained from the original clock

sequence (Fig. 2, d) using the element 12 delay. The signal input of the control unit 10 receives a signal (FIG. 2, e) controlling the frequency manipulator 2. On the first and second outputs of the control unit 10, binary video signals are generated (FIGS. 2, 3 and 2, and) controlling the first 8 and the second 9 phase handles. In this case, the control signal (FIG. 12, g) of the first phase manipulator 8 changes its state at the times determined by the clock pulses (FIG. 2, i), when the control signal (FIG. 2, e) of the frequency manipulator torus 2 has a state O and permits the passage to the output of the last high-frequency oscillation with a frequency r from the output of the second phase handler 9.

Accordingly, the control signal (Fig. 2, I) of the second phase shift knob 9 changes its state at the instant of time also determined by the Clock pulses (Fig. 2, e) from the frequency shift key 2, when the passage of the high frequency is allowed at the output of the pulse oscillations with a frequency {from the output of the first phase handler 8.

The control signals (Fig. 2, 3 and 2, and) at the outputs of the control block 10 at the time of zero phases of high-frequency oscillations with frequencies f, and |, set by pulses (Fig. 2, d) from the outputs of the Shaper 6 control signals must be in the same state. The verification of this CONDITION is carried out using the control unit 11. Its signal inputs provide signals (Fig. 2, C and 2, I) from the outputs of the control unit 10. On the clock input of the control unit 11

the delayed 45 signal arrives (Fig. 2, p) from the output of the adder

/ 4лЧf jr

pulses (Fig. 2, k), obtained by using delay element 13, from a sequence of pulses (Fig; 2, d) produced by shaper-6 control signals. The output of block 11 of the control input clock pulses (Fig. 2, k) comes only: when the state of the video signals controlling the phase manipulators 8 and 9 (Figs 2, 3 and 2, and) is not the same, give. Pulses (Fig. 2, l) from the output of the control unit 11 are fed to the installation input of the control unit 10 and

16 modulo two enters the first input of an element And 17, the second of which serves a delayed sequence of 7/8 T

50 (Fig. 2, k) from the output of the delay element 13. At the output of the control unit 11, these pulses are passed only when the signal (FIG. 2, p) from the output of the adder 16 modulo two

55 has state 1, i.e. then,

when the states that control the phase switches 8 and 9 of the video signals (Figs. 2, 3 and 2, and) do not match.

s

provide a change in the state of one of its output signals (Fig. 2, 1 and 2, h) depending on the state of the signal (Fig. 2, e) controlling the frequency manipulator 2.

In accordance with the change in the control signals (Fig. 2, C and 2, i), the phase knobs 8 and 9 change the phases of the input high-frequency oscillations with a frequency and t (Fig. 2, a.; And 2.6) .

From the outputs of phase manipulators 8 and 9, the signal inputs of frequency manipulator 2 receive high-frequency oscillations (Fig. 2, m, and 2, and) with frequencies f, and {, and the phases of these oscillations are equal to each other at 0 possible instants of frequency switching , determined by the clock sequence of pulses (Fig. 2, e) on. the input of the synchronizer 3. As a result, at the output of the frequency manipulator 2, a frequency-manipulated signal (Fig. 2, o) is obtained without interrupting the phase

with the duration of the characters T-G 7 --- f-r,;

VTj Ti

Unit 11 of the control works as follows.

On the signal inputs of the block, i.e. At the inputs of the adder 16 modulo two, binary video signals are received (Figs. 2, 3, and 2, and) controlling the operation of the phase manipulators 8 and 9.

The binary signal (Fig. 2, p) at the output of the adder 16 modulo two is either O, if the states of the input video signals (Fig. 2, H and 2, u) are the same (O and

five

0

About ti 11I

or 1

and

1) or condition

1, if the states of the input video signals do not match (Respective IIQ ""., 411

but able

and

 1 or

1 and O).

f jr

16 modulo two enters the first input of an element And 17, the second of which serves a delayed sequence of 7/8 T

(Fig. 2, k) from the output of the delay element 13. At the output of the control unit 11, these pulses are passed only when the signal (FIG. 2, p) from the output of the adder 16 modulo two

has a state of 1, i.e. then,

when the states that control the phase switches 8 and 9 of the video signals (Figs. 2, 3 and 2, and) do not match.

The control unit 10 operates as follows.

The first and second inputs of the element OR 23, which are the clock and installation inputs of the control unit 10, receive, respectively, a clock sequence of pulses delayed by 1/2 periods (Fig. 2, g) with a double follow-up frequency from the output of the delay element 13 and pulses ( Fig. 2, l) from the output of the control block 11. Any of the indicated pulses (Fig. 2, p) which go to the first inputs of the first 20 and second 21 elements AND pass to the output of the ШШ 23 element. A binary video signal comes to the second input of the second element 21 and 21 (Fig. 2, e) controlling the frequency-manipulated torus 2. This signal goes through the inverter 22 also to the second input of the first element AND 20. At the output of the first element AND 20, the input pulses (Fig. 2, p) are passed when the control signal is 1 (Fig. 2, t). Therefore, the signal controlling the first phase manipulator 8 (FIG. 2, g) from the output of the first trigger 18 changes its state when the device’s output oscillates at a frequency fj, and the signal controlling the second phase manipulator 9. (FIG. 2, o) when the output frequency is fy

Claims (3)

1. A device for transmitting information with frequency manipulation auth.St. No. 675618, characterized in that, in order to increase the accuracy and reliability of transmission by reducing the level of out-of-band emissions, the first and second frequency multipliers are introduced by two, the first and second delay elements, the first and second phase switches, the control unit and the control unit, the output of which is connected to the installation input of the control unit, the signal input of which is connected to the control input of the frequency manipulator, the first output of the control signal generator via the first frequency multiplier by two connections to the synchronizer input, the second output of the control signaling generator through the second frequency multiplier is connected to the first input of the frame registration unit and to the input of the first delay element, the output of which is connected to the clock input of the control unit, the first and second outputs of which are connected to the control inputs phase manipulators and with the signal inputs of the control unit, the clock input of which is connected to the output of the second delay element, the input of which is connected to the second output of the control driver constituent signals, which outputs a frequency synthesizer connected through the first and second phase manipulators to respective inputs of the frequency of the manipulator. 2. The device according to claim 1, which is that the control unit contains two triggers, two elements AND, an inverter and an element IL, the output of which is connected to the first inputs of the first and second elements AND, the outputs of which are connected to the inputs the first and second triggers, the second input of the first element I is connected to the output of the inverter, the input of which is connected to the second input of the second element AND, and is the signal input of the control unit, the installation and clock inputs of which are respectively the first and second inputs of the OR element, the outputs of the first and second triggers are respectively the first and second outputs of the control unit. 3. The device according to claim 1, wherein the control unit contains a modulo-connected series-connected modulator and an AND element, the second input of which is the clock input of the control unit, the signal inputs of which are modulo two, the output of the AND element is the output of the control unit. Compiled by V. Chibisov Editor N. Shvydka Tehred Z. Kastelevich. Proofreader: A. T speed order 1140/62 Circulation 624 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 JSh1 II I pgg 1 I stti 11in- -. - Branch ShSh Patent, Uzhgorod, st. Design, FIG. g Subscription