UDC 504.064.37
ZERO MICROWAVE RADIOMETER WITH SIMPLIFIED DESIGN OF INPUT MICROWAVE UNIT AND WITH INCREASED FLUCTUATION SENSITIVITY
G. G. Zhuk, postgraduate student, Department of Radioelectronics and Communication Systems (RCS), Tomsk State University of Control Systems and Radioelectronics (TUSUR), Tomsk, Russia;
orcid.org/0000-0002-5661-1754, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
The paper presents the results of developing a zero radiometer with a simplified design of input microwave unit. The aim of the work is to create a microwave radiometer with a simplified design of input microwave part of the receiver to reduce weight and size parameters and power consumption without deteriorating its technical characteristics. It is shown that the use of LNA as a low-temperature noise generator allows implementing the zero method without using high-temperature noise generators. Theoretical assessment has shown that the fluctuation sensitivity of zero microwave radiometer with a simplified design of input microwave unit is 1.4 times higher than that of the original circuit design. At the same time, simplification of microwave zero radiometer design leads to a decrease in weight and size parameters and power consumption, which makes it promising to be used in small-sized unmanned aerial vehicle
Key words: : zero microwave radiometer, increasing fluctuation sensitivity, high-temperature noise generator, low-temperature noise generator, transistor noise source.