SU1020987A1 - Signal digital phase shift keying device - Google Patents

Abstract

DIGITAL PHASE SENSOR MANIPULATOR, containing a coding block, a reference oscillator, the output of which through the first frequency healer: connected to the first input of the phase detector, serially connected to the ring the second frequency divider, phase detector, filter of the lower frequency STOT and the secondary generator, the output of which is connected with the output bus through the element. EXCLUSIVE OR, 6 tons l and h and y y sh ggb so- that, with a chain of increase in the accuracy of coupling the moment of manipulation of the FA, a trigger is introduced into it, the C input synchronization of which is connected to the output bus, input D to the coding unit, and the output to the second inlet element at EXCLUSIVE OR. (Ls

Description

BE

ABOUT

®

09

c.

g «h |

S

I

J

Rig.1 11 The invention relates to a pulsed technology, in particular to digital phase handlers of signals, and can be used in communication systems, radiolocation, rationalization and rational typing. A device for generating highly stable phase-manipulated oscillations containing a reference and synchronized oscillator with a target is known. frequency, adjustable time delay element of pulse signals, phase detector, low pass filter and cotation unit fl. The indicated device characterizes, with insufficient accuracy, the attachment of the moment of manipulation. Also known discrete phase manipulator containing the element SPARKS CHAUPSE. OR, performed on three1. Hera, two elements AND and one element OR, and the first input of the element is EXCLUSIVE OR is connected to the bus of the modulated pulse sequence, and the second is connected to the modulating sequence bus. The specified manipulator is inherently insufficiently locking the time of phase manipulation due to the lack of coherent priv between the modulating and modulated pulse sequences and an arbitrary moment of phase manipulation. .., The purpose of the invention is to improve the accuracy of the binding moment of phase manipulation. The goal is achieved by the fact that a device containing a coding block, a reference oscillator, the output of which through the first frequency divider is connected to the first input of a phase detector, a second frequency healer serially ringed, a phase detector, a low-pass filter and a synchronized oscillator. connected to the output bus through the EXCLUSIVE ILI element, entered the Trigger, input C of the harmonization which is connected to the output bus, input D - with the coding unit, and output - with the second input of the element OR ITS. Hi FIG. 1 shows a block diagram of a digital phase key signal changer; in fig. 2 - time diagrams of the device operation. 87 Digital signal handler contains a reference oscillator 1, first divider 2 frequencies, phase detector 3, 4 ngo 4 bs filter, synchronized oscillator 5, second divider 6 frequencies, EXCLUSIVE OR 7, D-trigger 8 and block 9 coding. The reference generator 1 is connected through the first healer 2 to the frequency of the first input of the phase detector 3 of the PLL, consisting of a phase detector 3, a low-pass filter 4, a synchronized generator 5, and a second frequency divider 6. The output of the synchronized pciTOpa 5 gene through the EXCLUSIVE OR 7 element is connected to the output bus and the synchronization input C of the B-flip-flop 8, the input D of which is connected to the coding block 9, and the output is to the other input of the EXCLUSIVE OR element 7. The device works as follows The modulated pulse sequence, formed by a synchronized oscillator 5 (Fig. 2 o) with a frequency, determined by the division factors of frequency dividers 2 and 6 and the frequency of the reference oscillator 1, goes to one of two inputs of the EXCLUSIVE OR element 7, out the bottom of the pulse sequence of which is fed to the synchronization input 3 of the Trigger 8 and the output bus. When it arrives from the coding unit 9 of the modulating (coding) pulse (Fig. 2 V) to the input of the E Trigger 8, the latter generates and fixes the modulating pulse at the moment the appearance of a modulated pulse (Fig. 2c), i.e. performs a coherent reference of the modulating pulse sequence to the modulated one, and a phase shift key is generated on the output bus (Fig. 2 E). The proposed digital phase signal generator allows one to increase the accuracy of the phase moment-mania- tion coupling — by coherently binding the modulators of the modulated moduli to pulses by spacing and performing the manipulation at the instant of the signal being zero-crossed.

g / l /

fe-§fefe;

Claims (1)

A DIGITAL PHASE SIGNAL MANIPULATOR comprising a coding unit, a reference oscillator, the output of which through the first frequency healer is connected to the first input of the phase detector, a second frequency healer is connected in series to the ring, and a phase de-oscillator whose output is connected to the output bus via an element. EXCLUSIVE OR, characterized in that. that, in order to increase the accuracy of the binding of the moment of manipulation of the pha, an O-trigger is introduced into it, the input C is synchronous, the lowering of which is connected to the output circuit. noy, input D - with the coding unit, and the output - with the second input of the element EXCLUSIVE OR, about. S X 1 'ΐ / h l . .. hours ; L— X 5 Ch ¹¹ '. · σ With 00 • h 4¾ /