Experimental Comparison of Parameters of Loop Antennas with and Without Laser Control
S Yu Kazantsev, P. A. Titovets, A. I. Sattarova, A. A. Pishcherkov, N. S. Bekushev
Abstract
This paper shows the results of an experiment with a loop antenna, in which the trimmer is a photoresistor controlled by the intensity of laser radiation. It was shown that the use of a photoresistor as an element of the external configuration of a series-connected loop antenna makes it possible to change the matching of the loop antenna due to an external laser source. The results of studies of the properties of the transmission coefficient of loop antennas with a dielectric copper foil and a semiconductor element are presented. Semiconductor element - when the intensity of the laser radiation on the photoresistor changes, the reflection coefficient of the loop antenna changes. In the range of 0.0003-8.5 GHz, the dependence of the reflection coefficients S11 is obtained. A comparison was made between a loop antenna and a loop antenna with a photoresistor.