SU526998A1 - Frequency Shaper - Google Patents

Description

one

The invention relates to radio engineering and can be applied in radio transmitting devices.

Known shaper frequency-manipulated signals, made by a two-channel scheme with a common carrier frequency generator at the input of channels, a phase shifter and a balanced modulator in each channel, with a common adder at the channel output and common for both channels a low frequency generator connected to a multiplier frequency and phase splitter-to the control inputs of the balanced modulators, while in one of the channels the output of the phase shifter is connected to the "signal input of the phase manipulator, the other input of which is connected to regular enrollment code synchronized low frequency generator 1.

However, the known driver has a small number of information positions in the output signal.

The purpose of the invention is to increase the number of information positions in the output signal.

For this, the phase manipulator output is connected to the signal input of the balanced modulator of the corresponding channel via an additional adder, the second input of which is connected via the additional phase manipulator of the wallpaper.x channels through an additional adder via an additional phase manipulator controlled by the code source. connected to the signal input of the balanced modulator of another channel, while the inputs

phase shifters of both channels are connected respectively to the outputs of the total and differential frequencies of the mixer connected to the outputs of the carrier frequency generator and frequency multiplier.

The drawing shows a functional diagram of the former. The shaper of frequency-manipulated signals, made by the two-channel circuit, contains a common generator 1 of the carrier frequency, a common adder 2

output channels, phase shifters 3 and 4, additional adders 5 and 6 and balanced modulators 7 and 8 of each channel, respectively, as well as a common low-frequency generator 9 for both channels, connected to frequency multiplier 10 and through phase splitter 11 to control inputs balanced Modulators 7, 11 8, while the output of the phase shifter 4 is connected to the signal input of the phase shifter 12, the other input of which is connected to the 13 "one source, synchronized by the low frequency generator 9, and the output of the phase shifter 12 is connected to the signal input do balanced modulator 8 through an additional adder 6, the second input of which through an additional phase

the manipulator 14, controlled by the source of code 13, is connected with the output of the phase converter 3. The second inputs of the phase shifters 3, 4 are connected via an additional adder 5 to the signal input of the balanced modulator 7, and the outputs of the phase difference, 3 and 4 are connected respectively to the total and output outputs differential frequency mixer 15 connected to the outputs of the generator 1 carrier frequency and frequency multiplier 10.

The shaper works as follows.

The generator 1 and generator 9 produce corresponding oscillations:

17, (Oh a, cos (w, t + cf); f / i (t) a, cos (W + f).

The output oscillation Ui (t) of the generator is fed to the inputs of the phase splitter 11 and frequency multiplier 10 with multiplication factor P. Output voltages of the carrier frequency generator 1 and frequency multiplier 10 receive pa-inputs of mixer 15, from the output of the total frequency of which voltage is applied to phase shifter 3 , and from the output of the difference frequency, phase shifter 4.

One of the output voltages of phase shifters 3 and 4

a (O and Sin (sho + «Q) t + -fo and, (t) and sin ((BO - nQ) / + tpo -

arrive at the inputs of the additional adder 5, and their other voltages:

(/ 4 () а cos ((DO + «и) + Those + С / 5 (t) а cos (соо - nQ) г + tp, - Wed

respectively, are fed to the inputs of phase manipulators 14, 12, to the control inputs of which signals Ui (t) and Uj (t} are transmitted from the source of code 13. Oscillations of phase manipulators 14, 12 are generated:

and, (i) aUi (t cos (+ nQ) + cf „+ / gsr,

Ui (t) ± l and, (t) aUj (t} cos (sho - nQ) + o - ",

t / HO ± i.

which are summed using an additional adder 6. From the outputs of the adders 5, 6, the received voltages are fed to the inputs of the balanced modulators 7, 8, where they are multiplied with the output voltages of the phase splitter 11. This creates oscillations that are added to the total sum of the mater 2 The output signal that occurs at the output of the adder 2:

Ig lJIffiTlV + Qjb 6j (if) and + T. + 5 4l

 +, vsm - HQ + Uj (t) And +.,: 3: +, ()},

represents a frequency-controlled signal at separated frequencies, having a new number of information positions:

Claims (1)

Invention Formula Shaper of frequency-manipulated signals, made by a two-channel scheme with a common carrier generator “at the channel input, phase shifter and iB balanced modulator each channel, with a common adder at the channel output and common for both channels with a low frequency generator connected to the frequency multiplier and through phase splitter - to the control inputs of the balanced modulators; in one of the channels, the output of the phase shifter is connected to the signal input of the phase manipulator, the other input of which is connected to the source yes, synchronized low-frequency generator, characterized in that, in order to increase the number of information positions in the output signal, the output of the phase manipulator is connected to the signal input of the balanced modulator of the corresponding channel through an additional adder, the second input of which through an additional phase manipulator controlled by source code, connected to the output of the phase shifter of another channel, the second inputs of the phase shifters of both channels through an additional adder connected to the signal input of the balanced m An alternator of the other channel, while the inputs of the phase shifters of both channels are connected respectively to the outputs of the sum and difference frequencies of the mixer connected to the outputs of the carrier frequency generator and the frequency multiplier. The source of information taken into account in the examination of the invention: 1 Auth. St. No. 364069, M.C. N OZS 3/00, 15.11.72 (prototype).