SURFACE ACOUSTIC WAVE TEMPERATURE SENSOR BASED ON DELAY LINE AND RESONATOR
https://doi.org/10.26583/vestnik.2022.241
Abstract
The results of studies of a temperature sensor based on a delay line and a resonator based on surface acoustic waves are presented. A method for calculating such a sensor is developed under the condition that the reflective interdigital delay line converter contains split electrodes and a resonator is connected to it. The sensor was calculated for a frequency of 433 MHz. It is shown that the effect of external capacitances on the resonant frequency when connected to a receiving-transmitting interdigital transducer is significantly less than when they are connected directly to the resonator. In this case, the SAW resonator has only an acoustic connection with the antenna, and the influence of the antenna and surrounding objects on the resonant frequency will be absent. It is noted that the use of delay lines on surface acoustic waves weakens the effect of external capacitances on the resonant peak of parameter S11 compared to their effect on the resonant peak of the SAW resonator, which increases the accuracy of temperature measurement. The temperature sensor proposed in this paper is recommended to be used to automate the processes of monitoring the temperature conditions of the operating high-voltage electrical equipment of transformer and distribution substations.
About the Authors
V. O. KislitsynRussian Federation
G. Ya. Karapetyan
Russian Federation
V. F. Kataev
Russian Federation
B. M. Seredin
Russian Federation
N. V. Ermolaevа
Russian Federation
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Review
For citations:
Kislitsyn V.O., Karapetyan G.Ya., Kataev V.F., Seredin B.M., Ermolaevа N.V. SURFACE ACOUSTIC WAVE TEMPERATURE SENSOR BASED ON DELAY LINE AND RESONATOR. Vestnik natsional'nogo issledovatel'skogo yadernogo universiteta "MIFI". 2022;11(6):450-456. (In Russ.) https://doi.org/10.26583/vestnik.2022.241