Receiving antenna array element with extended bandwidth toward low frequencies

International Conference on Innovations in Non-Destructive Testing (SibTest)

Balzovsky, E.V.^1 ; Buyanov, Yu I.^1 ; Koshelev, V.I.^1 ; Nekrasov, E.S.^1

Institute of High Current Electronics, SB RAS, Tomsk, Russia^1

关键词: Active elements;    Antenna geometry;    Dielectric barrier;    Layered media;    Lower frequencies;    Nanosecond pulse;    Ultra wide-band antennas;    Waveform distortions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/881/1/012001/pdf
DOI  :  10.1088/1742-6596/881/1/012001

来源: IOP

【 摘 要 】

An ultrawideband antenna based on a short dielectric dipole has been developed to sound dielectric layered media and to search objects including those hidden behind a dielectric barrier. In contrast to the previously presented antennas, the new one has an unbalanced output and contains a built-in balanced-to-unbalanced unit. As a result of optimization of the antenna geometry and topology of active elements, the lower frequency boundary was shifted toward low frequencies. The antenna records short nanosecond pulses with the spectrum ranging from 150 MHz to 2 GHz with small waveform distortions.