Semiconductor Physics, Quantum Electronics & Optoelectronics, 24 (1), P. 76-82 (2021).
DOI: https://doi.org/10.15407/spqeo24.01.076
Generation of the current normal to the surface of antenna
by electromagnetic waves and its application
in the high responsive receiver
V.N. Dobrovolsky
V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 03680 Kyiv, Ukraine Abstract.
Generation of the initial current normal to the surface of antenna by
electromagnetic waves has been considered. It has been shown that the angle of grazing (or
sliding) for the wave with the electric vector in the plane normal to the surface varies the
radiation resistance over a wide range. This property allows matching the radiation
impedances and loads. Here, it has been proposed to use this property to create a highly-
sensitive radiation detector. In relation with this task, a model of the radiation detection of
the input radiation signal by a direct quadratic detector in the stationary mode with the
diode included as the load has been considered. The obtained results prove that a diode with
the high differential resistance can effectively operate with the antenna. The rise of the
resistance increases the detector response voltage, its responsivity, and decreases the
receiver noise equivalent power. Improvement of these characteristics by orders of
magnitude is possible. The considered mechanism allows detectors to operate in the
infrared spectral range, and the increase in the wavelength, in principle, does not limit its
functioning.
Keywords: matching the radiation impedances and loads, quadratic detector, high
responsivity, low NEP, Schottky diode.
E-mail: sizov@isp.kiev.ua
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