Near fields aperture antennas measurements by means of a controllable microstrip reflectarray

In this paper design of the measuring set for antennas measurements based on the the reflective type antenna array are considered. Reflectarray is executed on the basis of microstrip dipoles. In structure of each printed dipole of the reflective type antenna array is present controllable microwave element. Changing conductivity of such element, we can effectively operate by length of a printed dipole of the reflective type antenna array. At the same time change of a dipole length results to essential variation of it´s radar cross-section. Thus, there is an opportunity in the electric way to change a place of the greatest reflection from the reflective type antenna. This circumstance enables to measure a near fleld of the researched antenna. It is obvious, that the most convenient for such researches appeared aperture aerials. Microstrip reflectarrays because of their high adaptability to manufacture appeared the most convenient tool in such near field antennas measurements.