The Ways of Technical Realization of Adaptive Algorithm of Compensation of Non-Linear Distortions of Radio Devices

Abstract

The practical realization of potential opportunities of onboard radio local systems of radio local systems (OBRLS) that are currently considerably higher than their real approachable technical characteristics is one of the main tasks of modern theory and practice of electronic and telecommunication. The authors of the article proposed some specific technical offers and ways of physical realization of scientifically grounded algorithm of adaptive compensation of non linear distortions (ACNLD). The insertion of artificial main and supportive entrances into the scheme of non-linear adaptive compensators allowed using the general theory of adaptive systems for their synthesis. The practical usage of synthesized following such a principle ACNLD according to the created recommendations allows to significantly increase the indices of quality of OBRLS in the real conditions of their functioning, comparing with the already known ones. An additional advantage of proposed adaptive method of expansion of linear dynamic diapason (LDD) is an improvement of all-weather of OBRLS and increasing of probability of identification of radio local maps of locality captured in different weather conditions without any additional changeovers. Except for this, a flexible reserve for the noise immunity of OBRLS is being fulfilled that allows taking into consideration the possible improvements of means of radio electronic struggle. Synthesized ACNLD are considerably free from many drawbacks of linear determined means of expansion of dynamic diapason of radio receiving devices (RRD) and also they have simpler apparatus realization. Except, in a process of projection of ACNLD a considerably less volume of a priori information about the parameters of LDD is needed for the calculation of already known schemes of depression of non-linear distortions. The transferring functions of adaptive filters of ACNLD are quite quickly gather at the non-linear transferring function of radio device (RD) provided that an effective convergence can be seen only with the presence of the inner noises at least unless they exceed the non-linear distortions by the level.K e ywor d s : radio device, adaptive compensator, non-linear distortion, internal noises, amplitude characteristic, dynamic diapason.

Scientific and Practical Implementation of Methods for Improving the Quality of Computer-Integrated Information Systems

“…Having took into consideration the mentioned more precise definitions, a development of ACNLD of the third row were carried out. A coefficient of transferring of the narrow-band magnifier that was constructed on the basis of the micro scheme TL071 is equal to 10 (on the central frequency of the passing strip -100 kHz) [26,27]. Multipliers were built on the integral micro schemes MC1496 [26,27].…”

“…A coefficient of transferring of the narrow-band magnifier that was constructed on the basis of the micro scheme TL071 is equal to 10 (on the central frequency of the passing strip -100 kHz) [26,27]. Multipliers were built on the integral micro schemes MC1496 [26,27]. The necessity of using of auto compensation of the constant component constructed on the basis of an integral micro scheme LM118, is conditioned by the presence in the outgoing signal of the micro scheme MC1496 a considerable (up to 5 V) constant component that can break the normal work of the next cascades [26,27].…”

“…Multipliers were built on the integral micro schemes MC1496 [26,27]. The necessity of using of auto compensation of the constant component constructed on the basis of an integral micro scheme LM118, is conditioned by the presence in the outgoing signal of the micro scheme MC1496 a considerable (up to 5 V) constant component that can break the normal work of the next cascades [26,27]. Besides, for the improvement of conditions of coordination of cascades to the exit of micro schemes LM118 connected emitting repeaters that are constructed on the transistors NTE101 [26,27].…”

“…The necessity of using of auto compensation of the constant component constructed on the basis of an integral micro scheme LM118, is conditioned by the presence in the outgoing signal of the micro scheme MC1496 a considerable (up to 5 V) constant component that can break the normal work of the next cascades [26,27]. Besides, for the improvement of conditions of coordination of cascades to the exit of micro schemes LM118 connected emitting repeaters that are constructed on the transistors NTE101 [26,27]. A magnifier of the circle of reverse connection ACNLD, integrator and counter (a device of subtraction) are built with the help of micro schemes LM118 of emitted repeaters collected on the basis of transistors NTE101 [26,27].…”

“…Besides, for the improvement of conditions of coordination of cascades to the exit of micro schemes LM118 connected emitting repeaters that are constructed on the transistors NTE101 [26,27]. A magnifier of the circle of reverse connection ACNLD, integrator and counter (a device of subtraction) are built with the help of micro schemes LM118 of emitted repeaters collected on the basis of transistors NTE101 [26,27].…”