SU1501251A1 - Simulator of pulsed radio signals - Google Patents

Abstract

The invention relates to radio engineering and communications. The purpose of the invention is to provide control of the initial phase shift of the amplitude-modulated signals. The simulator contains the reference Mr. 1, shapers 2 and 3 of the positive and negative half-waves, trigger 4, adders 5 and 9, controlled voltage dividers 6 and 7, and wideband phase shifter 8. The signal from H. 1 is fed to the shapers 2 and 3 and trigger 4, which controls the operation of the formers 2 and 3. The signals generated by them are added to adder 5. The result obtained goes through divider 7 to one input of adder 9, and through serially connected phase shifter 8 and divider 6 to another input of adder 9. Output 9 adder signal It is the output of the simulator. The control of the division factors of dividers 6 and 7 provides control of the initial phase shift of the amplitude-modulated signals. 1 il.

Description

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The invention of optical technology and wiring: 5I and can be used in the forma- tion of signals of the pulse-phase-1 phase1 x radonapigation systems,

The purpose of the invention is to securely control the initial fach shift the amplitude-modulated first signals.

The drawing shows a structural electrical circuit of a radio pulse simulator.

Radio pulse signal simulator Contains reference generator 1, shaper 2 positive half-waves, shaper 3 negative half-waves, trigger A, adder 5, first and second controlled dividers 6, 7 voltage, and wideband phase shifter 8 and additional adder 9.

The simulator of radio pulse signals works as follows.

The reference generator 1 produces a signal of the Meander type with a frequency twice the frequency of the high-frequency filling of the output signal

K (p) K

(P + 22; 123437) H 2 ji 8 -10O lP -i2 ig) (p 27-25-10) 4 -G2; g D To} (V -t- 2

NU)

where P jWi

K is the normalizing factor. Thus, the signal at the output of the wideband phase shifter 8 can be described by the expression 35

S (t) -A (t) sinc0.t.

The division factor of the first controllable divider 6 is set to sinCf, and the division ratio of the second controllable divider 7 is set to costf. Then the signal at the output of the additional adder 9 will be equal to

Sg, (t) A (t) cosUjt-cosq - - A (t) sintOjSini A (t) cos (Uot + Cf).

Control of the division ratio of the first and second dividers 6, 7 provides control of the initial phase shift of the amplitude-modulated signals.

Claims (1)

Invention Formula A simulator of radio signals that contains a reference generator. signal rfMiepaTopa 1 on the f (half-wave half of the half-wave, on the mold. From the reference wave A negative half-wave and a trigger 4. The signals of the forward and inverse outputs of the trigger 4 control the operating unit of the positive half-wave generator 2 and the former 3 of the negative, 11V1P1Y, output signals of which are added in the adder 5. At the output of the adder 5 the signal can be described in the output S,. (T) A (t) cos (0ot-, where A (t) is the envelope of the amplitude-modulated signal, SOD is the frequency of the high-frequency filling. The wideband phase shifter 8 implements the Gilbert Transform operation in the vicinity of W ,. At a frequency of 00 rad / s, one of the transfer function of the wideband phase shifter 8 will be a function ) NU) five 0 five 0 five trigger, shaper of a positive half-wave, shaper of a negative half-wave and an adder, the output of the reference generator connected to the first input of the shaper of a positive half-wave, with the first input of the shaper of a negative half-wave and the counting input of the trigger half-wave, the direct and inverse outputs of which are connected respectively to the second input of the shaper of the positive half-wave and with the second input of the negative pole wave former, the output of the polar half wave former is connected to the first input of the adder, The second input of which is connected to the output of the negative half-wave shaper, and the third input of the positive half-wave shaper is connected to the third shaper of the negative half-wave shaper and is a control input of the radio pulse simulator, characterized in that, in order to control the initial phase shift, the amplitudes of modular signals, broadband phase a tel, the first and the second up5 15012516 Equally, (1e dividers to the cable and doped voltage dividers on the line-adder, the first input is respectively the first one and which is connected to the output by the first second control inputs of the initial controlled divider nattragen, phase shift amplitude modules - the signal input of the first controlled emulator signal of the radio voltage voltage simulator is connected to the output-pulse signals, and the output of the second broadband base spreading device, the controllable divider of which voltage is connected to the signal connection a second input complemented input of the second controllably divide tional th adder whose output voltage L and a yield of the adder is the output of rf simulator control inputs of the first and vtorogopulsnyh signals.