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The possibility of widening the backscattering pattern (monostatic RCS pattern) of the Van Atta array with changing cylinder radius and array parameters has been studied. Assumed that waveguides are single-mode, and coupling between array radiators occurs through waveguides only. Integral equations obtained in explicit form for tangential component of the electric field intensity in the array elements apertures. Analysis of array RCS performed with different number of array elements pairs N, cylinder radius, aperture size, array spacing, and waveguides lengths.

In this paper shown that at low frequencies an shielded anechoic chamber can be represented as a rectangular resonator with perfect conducting walls in which it is possible to carry out measurements of the antenna radiation pattern under certain conditions. The experimental research showed good agreement with a rigorous solution.

Experimental research of the controllable Van-Atta with analog phase shifter was carried. Modulation by square and parabolic waves was investigated. Shown that in case of π-manipulation we can obtain carrier frequency suppression in reflected signal. In case of linear phase modulation it is possible to shift carrier frequency on a given value. Also HITTITE HMC247 volt-phase characteristics and input bandwidth for each modulating signal was measured.