Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Печать: 0040-2508
ISSN Онлайн: 1943-6009

Выпуски:
Том 78, 2019 Том 77, 2018 Том 76, 2017 Том 75, 2016 Том 74, 2015 Том 73, 2014 Том 72, 2013 Том 71, 2012 Том 70, 2011 Том 69, 2010 Том 68, 2009 Том 67, 2008 Том 66, 2007 Том 65, 2006 Том 64, 2005 Том 63, 2005 Том 62, 2004 Том 61, 2004 Том 60, 2003 Том 59, 2003 Том 58, 2002 Том 57, 2002 Том 56, 2001 Том 55, 2001 Том 54, 2000 Том 53, 1999 Том 52, 1998 Том 51, 1997

Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v77.i15.60
pages 1357-1363

SYSTEM OF AUTOMATIC FREQUENCY CONTROL OF HETERODYNE OF THE RADAR RECEIVER WITH MAGNETRON TRANSMITTER

I. M. Mytsenko
O.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkiv 61085, Ukraine
D. D. Khalameyda
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine

Краткое описание

At present, pulsed magnetrons are leaders in the use in the radar transmitters which is caused by the need to generate powerful high-frequency oscillations and to provide a given coverage range. The disadvantages of magnetrons include a significant level of noise and difficulties in implementing frequency control. For this reason, when using automatic frequency control (AFC), problems arise in controlling the frequency of the pulsed magnetron. In view of this, the AFC of heterodyne of the receiver rather than the one of the magnetron is most often used. The heterodyne frequency is maintained such that the receiver is always tuned to the frequency of the received signal. The objective of this paper is to analyze the existing methods for tuning the heterodyne frequency of pulsed radars with a magnetron transmitter, to develop a concept for building a functional layout and its practical implementation. The functional layout of the automatic frequency tuning system of heterodyne in radar receiver with a magnetron transmitter is developed and described in the paper. A frequency discriminator is used in AFC. The frequency discriminator combines the advantages of a single-cycle circuit (simplicity of design and tuning) and a two-cycle circuit (an output voltage equal to zero at the given magnetron frequency, as well as compensation of variations in the amplitude of the input voltage and interference). The practical implementation of the developed system is presented upon the example of millimeter-wave band radar (40 GHz), where a Gunn diode oscillator with varactor frequency tuning is used as the receiver heterodyne oscillator. In this paper, the electric scheme of a new frequency discriminator and its amplitude-frequency characteristic are shown. An intuitive method was used to develop an electrical schematic diagram. The analysis of the developed scheme was carried out using the method of mathematical modeling. Conclusions are drawn about the novelty of the proposed concept of constructing the AFC of heterodyne radar receivers with a magnetron transmitter and its advantages in comparison with known solutions.


Articles with similar content:

ANALYSIS, ASSESSMENT AND PROPOSALS REGARDING THE METHOD FOR GENERATION OF SYSTEM PARAMETERS IN NTRU-LIKE ASYMMETRIC SYSTEMS
Telecommunications and Radio Engineering, Vol.76, 2017, issue 6
K. A. Pogrebnyak, A. G. Kachko, L. V. Makutonin, I. D. Gorbenko
COUPLING RADIATION LOSS IN THE MIRROR DIELECTRIC DISK RESONATOR. PART 2. MISMATCHED WAVEGUIDE COUPLING
Telecommunications and Radio Engineering, Vol.75, 2016, issue 2
A. I. Shubnyi, V. V. Glamazdin, V. N. Skresanov, M. P. Natarov
A TECHNIQUE FOR RESONANCE MATCHING OF DUAL PERIODIC STRUCTURES IN DIFFRACTION RADIATION OSCILLATORS
Telecommunications and Radio Engineering, Vol.73, 2014, issue 1
M. Yu. Demchenko, S. L. Senkevich, V. S. Miroshnichenko
ANALYSIS OF HIGH-POWER NARROWBAND INTERFERENCE SUPPRESSION SYSTEM IN RADIOMETRIC RECEIVER
Telecommunications and Radio Engineering, Vol.78, 2019, issue 3
Valeriy V. Semenets , T. D. Gutsol, A. D. Cherenkov, O. G. Avrunin
BWT-Clinotron Based Stochastic Oscillators for Hidden Communications, Electronic Counter Action and Radio Masking in Millimeter-Wave Band
Telecommunications and Radio Engineering, Vol.67, 2008, issue 2
B. P. Yefimov