Content 6-2015

O.V. Varlamov, A.V. Pestryakov, I.V. Chugunov
RESEARCH OF RF POWER AMPLIFIERS BASED ON THE METHOD OF SEPARATE AMPLIFICATION OF MODULATED SIGNAL COMPONENTS VIA THE USE OF SOFTWARE AND HARDWARE SIMULATOR (pp. 3-8)

D.U. Vishnyakov, L.N. Kazakov
REDUCE PHASE NOISE IN PLL FREQUENCY SYNTHESIZER IN REQUIRED FREQUENCY BAND (pp. 9-14)

Golubkov V.G., Golubkov A.V., Kochemasov V.N., Kuvshinov V.V., Yankovskiy E.V.
TWO-CHANNEL LOW NOISE FREQUENCY SYNTHESIZER WITH ADJUSTABLE PHASE AND AMPLITUDE (pp. 15-19)

S.I. Dinges, A.V. Pestryakov
A SOFTWARE COMPLEX FOR GENERATING AND ANALYSIS OF SIGNALS OF MODERN AND ADVANCED TELECOMMUNICATIONS SYSTEMS (pp. 20-23)

J.A. Izmailova
DIGITAL SYNTHESIS WITH FREQUENCY MODULATION (pp. 24-28)

Kochemasov V.N., Golubkov A.V., Egorov N.P., Cherkashin A.A., Ghuguy A.P.
DIRECT DIGITAL FREQUENCY SYNTHESIZERS IN SYSTEMS OF FREQUENCY AND SIGNALS SYNTHESIS (pp. 29-36)

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ABSTRACTS & REFERENCES

RESEARCH OF RF POWER AMPLIFIERS BASED ON THE METHOD OF SEPARATE AMPLIFICATION OF MODULATED SIGNAL COMPONENTS VIA THE USE OF SOFTWARE AND HARDWARE SIMULATOR

O.V. Varlamov, A.V. Pestryakov, a.v.pestryakov@mail.ru , I.V. Chugunov,
Moscow Technical University of Radio and Communications, Moscow, Russia

Abstract

Approach based on the use of software and hardware systems due to research of the power amplifier with separated modulated waves gain (SGPA) is presented in this work. It allows a high-specific analysis of specific problems for this scheme, which lead to the transmitted signal distortions. Hardware SGPA model contains exciter, that forming RF phasemodulated component, its power amplifier working in key mode (RF path), amplifier of envelope signal (low-frequency chain), receiver’s chain demodulator. Software provides forming and displaying of test signals as separate high-frequency phase modulated and lowfrequency (envelope) components; modeling parts of SGPA; parameters analysis of output RF signal from hardware transmitter model. Such test signals as unmodulated carrier signal, two-tone signal with equal amplitudes, AM signal modulated with test-tone, AM signal modulated with speech-like signal, digital OFDM signal DRM broadcasting standard are applying. Such specific reasons of signal distortion as amplitude saturation of low-frequency signal at envelope chain, zero shift of envelope, band limitation of low frequency chain, delay difference between signal passing in RF and low-frequency chains, amplitude-phase conversion in phase-modulated chain can be researched by using of this complex.

References

1. Kozyrev V.B., Lavrushenkov V.G., Leonov V.P. et al. Transistor generators of harmonic oscillations in the key mode. Moscow: Radio and communications. 1985. 192 p.
2. Shahgildyan V.V., Ivanyushkin R.Yu. Methods for increasing the energy efficiency of linear power amplifiers. T-Comm. 2011. No. 9, pp. 143-145.
3. Varlamov O.V., Gromorushkin V.N., Lavrushenkov V.G. Development of a short-wavelength key power amplifier with separate amplification of the components of a single-band signal. T-Comm. 2011. No. 9, pp. 42-44.
4. Varlamov O.V. Development of a highly efficient modulation path for an RF power amplifier with separate amplification of the components of a single-band signal. T-Comm. 2011. No. 9, pp. 45-46.

REDUCE PHASE NOISE IN PLL FREQUENCY SYNTHESIZER IN REQUIRED FREQUENCY BAND

D.U. Vishnyakov, vishnyakovdenisu@yandex.ru
L.N. Kazakov, kazakov@uniyar.ac.ru
Yaroslavl State University named after P.G. Demidov, Yaroslavl, Russia

Abstract

In this paper result of one loop wideband SHF PLL frequency synthesizers implementation with low phase noise of output signal in required frequency band was offered. The obtained characteristics were achieved by the use of special method: structural and parametric syntheses on the basis of linear optimal Wiener filtration. Results of scientific research formed the basis of high performance frequency synthesizer.

References

1. Romanov S.K., Tikhomirov N.M., Lenshin A.V. Pulse-phase self-tuning systems in frequency synthesis and stabilization devices. Moscow: Radio and Communications. 2010. 328 p.
2. Ryzhkov A.V., Popov V.N. Frequency synthesizers in radio technology. Moscow: Radio and communications. 1991. 264 p.
3. Kazakov L.N., Vishnyakov D.Yu. Designing precision frequency synthesizers based on IFAPCH. Telecommunication. 2013. No. 5, pp. 34-39.
4. Kazakov L.N., Vishnyakov D.Yu. Structural and parametric synthesis of indirect frequency synthesizers. Science and Education. MSTU named after N.E. Bauman: electron. Journal. 2012. No. 6. URL: http://technomag.edu.ru/doc/423339.html (accessed: 13.07.2012).

TWO-CHANNEL LOW NOISE FREQUENCY SYNTHESIZER WITH ADJUSTABLE PHASE AND AMPLITUDE

Golubkov V.G., Golubkov A.V., Kochemasov V.N., Kuvshinov V.V., Yankovskiy E.V.,
inbox@radiocomp.ru
Radiocomp, LLC, Moscow Technical University of Radio and Communications, Moscow, Russia

Abstract

Paper describes two-channel low-noise frequency synthesizer with adjustable phase and amplitude. Structure, characteristics and appearance are given.

References

1. Romanov S.K., Tikhomirov N.M., Lenshin A.V. Pulse-phase self-tuning systems in frequency synthesis and stabilization devices. Moscow: Radio and Communications. 2010. 328 p.
2. Ryzhkov A.V., Popov V.N. Frequency synthesizers in radio technology. Moscow: Radio and communications. 1991. 264 p.
3. Kazakov L.N., Vishnyakov D.Yu. Designing precision frequency synthesizers based on IFAPCH. Telecommunication. 2013. No.5, pp. 34-39.
4. Kazakov L.N., Vishnyakov D.Yu. Structural and parametric synthesis of indirect frequency synthesizers. Science and Education. MSTU named after N.E. Bauman: electron. Journal. 2012. No. 6. URL: http://technomag.edu.ru/doc/423339.html (accessed: 13.07.2012).

A SOFTWARE COMPLEX FOR GENERATING AND ANALYSIS OF SIGNALS OF MODERN AND ADVANCED TELECOMMUNICATIONS SYSTEMS

S.I. Dinges, A.V. Pestryakov, a.v.pestryakov@mail.ru
Moscow Technical University of Radio and Communications, Moscow, Russia

Abstract

A program complex for vector generating and analysis of signals that are used at modern and advanced communication systems and broadcasting, separate functional units, testing of radio frequency blocks and whole devices, is presented. Creating signals with different modulation types, packetized signals of mobile telecommunication systems and signals with different impairments, such as noise of the waveform shaping reference signal chains, DC-offset, I/Q-imbalance, frequency deviation allows by this complex. Different types of shaping filters are also can be used. Vector signal analysis program allows a comprehensive signal analysis, calculation of different parameters and characteristics. Various types of signal displaying, such as signal constellation, vector diagram, time representation, amplitude or phase spectrum etc. can be chosen. Complex supports automatic detection of modulation type, decision point due to demodulating of signals, as well as compensation of some modulated signals non-idealities like DC-offset, frequency and phase errors, displaying of impairments sizes after compensation. The output interface allows plotting of Error Vector Magnitude (EVM) time curves and Complementary Cumulative Distribution Function (CCDF).

References

1. Dinges S.I., Kolesnikov I.I., Pestryakov A.V. The software package for the vector formation and analysis of signals of digital communication systems “Vector” version 3.5. T-Comm. 2012. No. 9, pp. 56-58.
2. Adzhemov S.S., Stogov A.A., Tereshonok M.V., Chirov D.S., Ivankovich M.V. An algorithm for recognizing the type of digital modulation of a signal by the shape of a phase constellation using self-organizing Kohonen maps. T-Comm. No. 11. 2011, pp. 4-6.
3. Using Error Vector Magnitude Measurements to Analyze and Troubleshoot VectorModulated Signals. Agilent PN 89400-14 Product Note. P. 14.
4. Vector Modulation Measurements, Agilent Application Note 343-4, literature number 5952-3703. P. 26.
5. Characterizing Digitally Modulated Signals with CCDF curves, Agilent Application Note 5968-6875E. P. 24.

DIGITAL SYNTHESIS WITH FREQUENCY MODULATION

J.A. Izmailova, janabrag@mail.ru
Joint Stock Company “Polyot Research & Production company, Nizhny Novgorod, Russia

Abstract

The report presents a digital frequency synthesizer which is designed according to the indirect synthesis method and makes it possible to carry out frequency modulation of the output high-frequency signal over a wide range of modulating frequencies, phase-lock control of the central frequency and its discrete readjustment with the automatic-frequency control function being preserved. The given frequency synthesizer can be used in radio transmitting equipment comprised into communication systems, and also in radars, navigation equipment and adaptive broadband communication systems with the operational frequency readjustment program.

References

1. Belov L.A. Microwave signal generating devices and their components. Moscow: Publishing House MEN, 2010.
2. Yampurin N.P., Boleznev V.V., Safonova E.V., Zhalnin E.B. The formation of precision frequencies and signals: Textbook. N. Novgorod: Publishing house of NSTU. 2003.
3. Pestryakov A.V., Serdyukov P.N. Frequency synthesizers for portable equipment. Special equipment. 2000. No. 3, pp. 45-51.

DIRECT DIGITAL FREQUENCY SYNTHESIZERS IN SYSTEMS OF FREQUENCY AND SIGNALS SYNTHESIS

Kochemasov V.N., Golubkov A.V., Egorov N.P., Cherkashin A.A., Ghuguy A.P.,
inbox@radiocomp.ru
Radiocomp, LLC; Moscow Technical University of Radio and Communications, Moscow, Russia

Abstract

An overview of modern methods of synthesis frequencies and signals is given. Examples of devices that use different methods of synthesis are shown. The main attention is paid to the synthesis of frequencies and signals based on direct digital synthesizers.

References

1. Tierney J., Rader C.M., Gold B. A Digital Frequency Synthesizer. IEEE Trans. Audioelectroacoust. Vol. Au-19, March, 1971, pp. 48.
2. Zharov A.N., Kochemasov V.N., Budishov V.P. A signal synthesizer with a given law of phase change. Auth. certificate of the USSR SU 1686693 A1, 10.23.91.
3. Technical description of the chip 1508PL8T, ttp: //www.radiocomp.ru.
4. Chenakin A. Synthesizers: Concept to Product. Norwood, MA: Artech House, 2011.
5. Kochemasov V.N., Belov L.A., Okoneshnikov V.S. Signal generation with linear frequency modulation. Moscow: Radio and communications. 1983. 192 p.