Effect of the ground screen on sensitivity of low-frequency radio telescope array element

The Giant Ukrainian Radio Telescope (GURT) is a new generation radio telescope with active phased antenna array intended to operate within 10-80 MHz range. The radio telescope is being constructed now in Ukraine. The array elements are active antennas in form of flat wire dipoles integrated with low-noise preamplifiers. In the paper we present a comparative analysis of two GURT array element versions that differ in presence or absence of wire grid ground screen under the dipole. The analysis results are given and discussed.