RU24760U1 - DEVICE FORMING SIGNALS FOR THE TRANSMITTER - Google Patents

Abstract

A device that generates signals for a transmitter containing a two-channel regenerator, a power amplifier, the input of which is connected through a switch to quartz oscillators with the output signals of a decoder, the control inputs of which are connected to the output of a two-channel regenerator, characterized in that an auto-selection unit, a reference frequency driver, a shaper are introduced into the device time characteristics of a signal, a digital frequency generator, a control unit whose outputs are connected to the inputs of a digital frequency generator and forms a signal generator, the outputs of the reference frequency driver are connected to a signal driver and a clock input of a digital frequency generator, and the inputs of the control unit are connected to the output of a signal driver, the output of the control unit, and the output of the regenerator. whose input is connected to the output of the auto-selection node.

Description

Signal conditioning device for transmitter

The utility model relates to communications and can be used in radio transmitting devices.

A device is known for generating along two independent paths of one of the frequencies 122, 126, 130, 134 kHz depending on control signals received by excess manipulation, comprising a signal switch of the manipulating line, post5T1ayupshch to a two-channel regenerator associated with a decoder that controls the operation of the switch, connecting the output of one w of four crystal oscillators to the input of the output power amplifier 1.

However, the known device performs:

-selection of the “work transit” mode

-forms only signals DHT.

The objective of the utility model is to expand the functionality of the device:

-automatic choice of the mode “work - transit;

- formation of signals of the frequency response, sounding and other types of signals. The task is achieved in that in a device for generating signals

DCT, containing a manipulation line switch, a two-channel regenerator connected to a deprag lens, controlling a switch, connecting one of the four crystal oscillators to the output amplifier, the “work - transit.

shaper of the external onor frequency, shaper of the temporal characteristics of the generated signal, a digital frequency generator, a control unit (switch), the outputs of which are connected to the inputs of the digital frequency generator and the shaper of the time characteristics of the signal, the outputs of the shaper of the reference frequency are connected to the shaper of the temporal characteristics of the signal and other inputs of the digital generator frequency, the output of which is fed to the power amplifier, and the inputs of the control unit (switch) are connected to the outputs of the regenerator, node av ovybora "work - transit, the output of the temporal characteristics of the signal, the control unit (switch) serves also commands harakterizuyupsche job type utility model.

Figure 1 presents the structural electrical diagram of the proposed utility model.

A useful model for the formation of signals of the DTT and sounding contains:

-Auto-selection node "work-transit line manipulation 1;

two-channel regenerator 2;

Shaper of extraneous reference frequency 3;

Shaper of temporal characteristics of signal 4;

-control node (switch) 5;

-digital frequency generator 6;

The manipulation signal 1, 2 of the channel is sent to the auto-selection node “work transit 1. If the power supply is supplied to the null model, then the manipulation signal is fed to the two-channel regenerator 2 (“ work ”mode), otherwise it is automatically output to the device (“ transit ”mode) .

The two-channel regenerator 2 restores the signal packages "feeds them to the inputs of the control unit (switch) 5.

The frequency reference driver 3 from a sinusoidal reference frequency signal fon generates a logic level signal, divides them, and then the clock frequencies (fji 200kHz, FTI 1., 25MHz) feeds the signal time generator 4 and the digital frequency generator 6, respectively.

Shaper of temporal characteristics of signal 4, depending on what type of work is chosen (when generating sensing signals), generates a certain clock sequence (Fm beckoned), which is fed to control unit 5. In this case, control unit 5 transmits this clock to digital frequency generator 6 a sequence that determines the parameters of the IF sensing pulses (frequency, duration, period, number of pulses) at the output of a digital frequency generator 6.

If the type of operation of the DCHT is selected, the control unit 5 transmits to the digital frequency generator 6 signals (1, 2 channels) of the manipulation line, the combination of levels of which determines the frequency at the output of the digital frequency generator 6.

7.

The signals from the output of the digital frequency generator 6 are fed to the input of the amplifier 7, which converts them into analog form, amplifies them and passes them to the output of the model under consideration.

In FIG. 2 shows an electrical functional diagram of a digital frequency generator 6.

The functional electric circuit of the digital frequency generator 6 contains:

- counter of codes addresses, generated frequency 1;

- read-only memory (ROM) codes generated frequency 2;

-accumulating adder 3;

- ROM samples of the period of the sinusoidal signal 4;

Registrar 5.

FTI frequency clock accumulator 3, register 5.

From the output of the counter of addresses of codes 1, the address of the codes of the generated frequency (when generating sounding signals) is sent to the ROM of codes 2, while the signals 1, 2 channel from the control unit 5 (drawing 1) are not supplied. The frequency code from the output of the ROM codes 2 is supplied to the accumulating north-west generator 3. From the output of the accumulating adder 3, the codes go to the input of the ROM samples of the period of the sine wave 4. The codes of the samples of the period of the sinusoid are stored in register5.

/

When forming frequencies for the DCT, the control unit 5 (Fig. 1) stops the operation of the address counter of codes 1, and signals 1, 2 channels. on the contrary skips.

The value of the generated frequency is calculated by the formula:

FTI "A

fBbK where

ffiHx - value of the output frequency, Hz;

FTI - value of clock frequency, Hz;

A - code at the input of the glowing adder;

NHC is the capacitance of the sz accumulator.

The use of new elements: a work-transit auto-selection node 1, an external reference frequency driver 3, a signal driver 4, a control driver 5, and a digital frequency generator 6 allows the proposed utility model to automatically set the operation or transit mode, generate various types of signals for radio transmitting devices .

Head of Patent

units (j.- - Ryabokon T.D.

93 (// f

Claims (1)

A device that generates signals for a transmitter containing a two-channel regenerator, a power amplifier, the input of which is connected through a switch to quartz oscillators with the output signals of a decoder, the control inputs of which are connected to the output of a two-channel regenerator, characterized in that an auto-selection unit, a reference frequency driver, a shaper are introduced into the device time characteristics of a signal, a digital frequency generator, a control unit whose outputs are connected to the inputs of a digital frequency generator and forms a signal generator, the outputs of the reference frequency driver are connected to a signal driver and a clock input of a digital frequency generator, and the inputs of the control unit are connected to the output of a signal driver, the output of the control unit, and the output of the regenerator. whose input is connected to the output of the auto-selection node.