D.V. Baryshev1, A.I. Pustovalov2, A.V. Nesterenko3, I.S. Formalnov4, S.O. Krumlyakov5
1-5 PJSC Radiofizika (Moscow, Russia)
4,5 Moscow Aviation Institute (National Research University) (Moscow, Russia)
1 Baryshev.d@internet.ru;2 anton.pustovalov@mail.ru; 3NIO_7_Nesterenko@mail.ru;
4 formalnov@mail.ru; 5 krumlyakov94@mail.ru
Currently, microwave radar, radio navigation and telecommunications devices are being intensively developed. At the same time, they are subject to increased requirements for the stability of parameters. In modern microwave technology, a high indicator of the stability of the system under the influence of various external and internal factors is very important. An important criterion for the operation of the equipment is its ability to maintain operating characteristics at various ambient temperatures. This article discusses a method for reducing the dependence of the output power of electronic devices on temperature using the example of a microwave converter. When the ambient temperature increases, the output power of most electronic devices, including the microwave converter, decreases. This leads to a discrepancy between the parameters of the requirements for this device.
This problem can be solved with the help of a cooling system, but this method requires the development of additional devices that provide cooling of the microwave converter. The cooling system also leads to a heavier and more complicated design of the microwave converter.
It is difficult to apply the method of correction of the amplifying element mode from temperature. As a rule, ready-made chips are used in devices, the mode of operation of which cannot be adjusted.
This article presents a method to ensure the stability of the device parameters. The method consists in adding two microchips to the device: a microwave attenuator with a temperature dependence of the signal attenuation coefficient and a signal amplifier to compensate for attenuation. This method does not require expensive developments and does not make major structural changes to the design of the microwave converter device.
The results obtained, using the example of a microwave converter, showed that the method with the inclusion of an attenuator with a temperature dependence and a pre-amplifier of the IF signal makes it possible to achieve stable output power when the ambient temperature changes. Such a solution can be used in the fight against a drop in output power when the ambient temperature rises.
Baryshev D.V., Pustovalov A.I., Nesterenko A.V., Formalnov I.S., Krumlyakov S.O. Reducing the dependence of the output power
of electronic devices on temperature by the example of a microwave converter. Radiotekhnika. 2022. V. 86. № 4. P. 5−11.
DOI: https://doi.org/10.18127/j00338486-202204-01 (In Russian)
- RF Micro Devices/ RFSA4023SQ Datasheet/ https://www.qorvo.com/products/d/da001141 (data obrashhenija: 24.09.2021).