Search

Search Results

• MASTER GENERATOR OF CENTIMETER-WAVE INTERFERENCE TRANSMITTER

  A.N. Zikiy , A.S. Kochubey

  2021-08-11

  Abstract ▼

  The master generator of the transmitter is the most important component, since it determines
  its stability and range properties. In the Russian market there are many models of auto generators
  of domestic and foreign production. They differ in the element base (active element),
  weight, dimensions, cost, operating frequency range, and other parameters. In many cases, the
  passport and technical specifications do not contain a number of parameters that are important
  for the consumer. The purpose of this work is to study the main characteristics of the generator,
  including those not declared by the supplier. The object of the study is a microwave generator
  module in a typical switching scheme. The results of an experimental study of a VCO operating in
  the 5 GHz region are presented. The estimation of parasitic products in the spectrum of the output
  signal is given. Photos of the spectrum of the output signal showing a small width of the spectral
  line are presented. The modulation characteristics are measured when the control voltage and
  supply voltage change, and their average steepness is calculated. These data allow us to make
  reasonable requirements for the stability of the control and supply voltages. The results obtained
  can be used in receiving and transmitting equipment for communication, navigation, and electronic
  warfare. The article expands the idea of the line of domestic generators, demonstrates their highelectrical characteristics. The following electrical parameters have been achieved: – operating
  frequency range from 4968 to 5448 MHz; – output power of at least 11 dBm; – supply voltage
  minus 16 V; – control voltage from 5 to 31.5 V.

• GENERATOR WITH COAXIAL RESONATOR

  D.Е. Gubarev, А.N. Zikiy, А. S. Kochubey

  89-97

  2025-08-01

  Abstract ▼

  Autogenerators have found wide application in the receiving and transmitting equipment of
  communication, navigation and radar, as they determine their stability, power and other important
  parameters. The object of research in this work is a 1.5 GHz heterodyne from the C4-60 spectrum
  analyzer. Since the technical description of this device does not contain a number of important
  parameters, the purpose of the study is to study the frequency run-out, the frequency dependence
  on the supply voltage, the harmonic level. A schematic diagram and a brief description of the generator
  design are given. The simulation of a coaxial resonator in the Microwave Office package is
  carried out. The amplitude-frequency characteristic of the resonator is given. The results of an
  experimental study of a 1.5 GHz autogenerator are presented. The estimation of parasitic parameters
  in the spectrum of the output signal is given. The frequency run-out and modulation characteristic
  along the power supply circuit were measured. These data allow us to make a reasonable
  requirement for the stability of the supply voltage. The results obtained can be used in the design
  of receiving and transmitting communication equipment, navigation, electronic warfare. The article
  may be useful for students and teachers of educational institutions in the educational design of receiving and transmitting equipment. The following electrical parameters have been achieved:
  – operating frequency 1500 ±1.5 MHz; – output power of at least 13 dBm; – supply voltage minus
  12.6 V; – consumption current no more than 60 mA; – frequency run-out in 24 minutes after
  switching on no more than 325 kHz; – frequency departure when the voltage changes from minus
  5 V to minus 13 V no more than 241 kHz.