MASTER GENERATOR OF CENTIMETER-WAVE INTERFERENCE TRANSMITTER
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.
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