SU906021A1 - Device for shaping frequency-manipulated signals - Google Patents

Description

(5) DEVICE FOR THE FORMATION OF FREQUENCY-MANIPULATED SIGNALS

I

The invention relates to telegraphy.

The device is known {: a property for generating frequency-manipulated signals containing a low-frequency generator connected in series and a first phase shifter, the outputs of which are connected to the first inputs of the first and second balanced modulators and to the frequency doubler input, the output of which is connected to the input of a synchronized source through the pulse shaper information code, as well as an adder, the output of which is connected to the input of the load block, and a series-connected generator, a carrier frequency and a second phase shifter The outputs of which are connected to the first input of the phase manipulator, the second input of which is connected to the output of a synchronized source of information code and to the second, input of the first balanced modulator, the output of which is connected to the first input of the adder, to the second

the input of which is connected to the output of the second balanced modulator 11.

However, in the known device, the formation accuracy is insufficient.

The purpose of the invention is to improve the formation accuracy.

Claims (1)

The goal is achieved by the fact that a device for generating frequency-manipulated signals containing a low-frequency generator in series and a first phase shifter, the outputs of which are connected to the first inputs of the first and second balanced modulators and to the frequency doubler input, the output of which is connected to the input of the synchronized source code information, as well as the adder, the output of which is connected to the input of the load block, and serially connected generator of the carrier frequency and V The phase shifter, the outputs of which are connected to the first input of the phase manipulator, the second input of which is connected to the output of a synchronized information code source and to the second input of the first balanced modulator, the output of which is connected to the first input of the adderJ to the second input of which the output of the second balanced modulator is connected, the first key and the series-connected integrator, the second key and the third phase shifter, whose output is connected to the second input of the second balanced modulator and the output of the first the key, the first input of which is connected to the input of the inverter and the second input of the phase manipulator, the output of which is connected to the second inputs of the first and second keys. The drawing shows a structural electrical circuit of the device proposed. The device contains a low-frequency generator 1, a phase shifter 2, a balanced modulator 3t phase manipulator A, a frequency doubler 5. shaper 6 pulses, synchronized source 7 information code, balanced modulator 8, load unit 9, adder 10, carrier frequency generator 11, phase shifter 12, keys 13 and Il, phase shifter 15. inverter 1b. The device works as follows. A low-frequency generator 1 generates a voltage that is fed through phase shifter 2 to the first inputs of balanced modules 3 and 8, as well as through frequency doubler 5 and shaper 6 pulses to the input of a synchronized source 7 of the information code, which ensures the change of output voltage synchronizing source 7 code only at times that coincide with the zero crossing of the output voltage of the generator 1. When the upper frequency is transmitted to the second inputs of the balanced modulators 3 and 8, voltage is applied In the quadrature, one of which is the carrier oscillation shifted in phase by the second phase shifter 12, generated by the generator 11, and the other carrier oscillation shifted by the phase shifter by the carrier 12 relative to the first one by 90 and manipulated in phase by O® or 180 ° The information code is controlled by the phase manipulator k, the voltage from the phase manipulator t being fed to the second input 90 of the second balanced modulator 8 through a key 13 controlled by the voltage of the information code. When the lower voltage is transmitted, the output voltage of the phase manipulator k receives an additional phase shift in the phase shifter 153, in which case the key 1 is opened by the voltage generated by the inverter 16 controlled by the voltage of the synchronized source 7 of the code. The resulting balanced modulated voltages are fed through the inputs of the adder 10 to the load unit 9. The peculiarity of the formed FM signal is that it does not cause transients at the output of load block 9. moreover, there are no phase jumps in the output voltage of this block. Thus, in the proposed device, the formation accuracy is improved. The invention is a device for generating frequency-manipulated signals, comprising a series-connected low-frequency generator and a first phase shifter, the outputs of which are connected to the first inputs of the first and second balanced modulators and to the frequency doubler input, the output of which is connected to a synchronized source of information code through the pulse shaper. , as well as an adder, the output of which is connected to the input of the load unit, and a carrier frequency generator and a second phase connected in series a rotator whose outputs are connected to the first input of the phase switch, the second input of which is connected to the output of a synchronized source of information code and to the second input of the first balanced modulator, the output of which is connected to the first input of the adder, to the second input of which is connected the output of the second balanced modulator, characterized by the fact that, in order to increase the formation accuracy, the first key and the inverter connected in series, the second key and the third phase shifter, the output of which is connected to the second input of the second balanced modulator and the output of the first switch, whose first input is connected 59060216 with the input of the inverter and the second inputSources of information, phase manipulator, the output of which is taken into account during the examination is connected to the second inputs of the first and 1. USSR author's certificate of the second keys, -K, cl. And 03 C 3/00, 1970 (prototype)