FIELD: physics.
SUBSTANCE: method includes emitting a microwave signal into an anechoic chamber, scattering said signal with a metal probe and receiving the power of signals scattered by the probe and the illuminated portion of the side wall of the anechoic chamber. The probe is made in the form of a thin rhombic metal plate with the same or different length of diagonals, wherein the length of the diagonal or the shorter diagonal is greater than the operating wavelength of the anechoic chamber. The probe is placed on a low-reflecting support which is placed in the anechoic area of the anechoic chamber vertically and with one or its diagonals horizontally, after which the probe is rotated on the azimuth and irradiated with a microwave radiator, and the measured portion of the side wall of the anechoic chamber is irradiated with mirror reflection from the probe towards said portion, and microwave signals are received separately in time: one mirror reflected from the plane of the probe in the reverse direction, and the other reflected in the reverse direction from the probe-irradiated portion of the side wall of the anechoic chamber, and the echo coefficient of the probe-irradiated portion of the wall is determined as the ratio of the power of signals reflected in the reverse direction from the illuminated portion of the side wall and the plane of the probe.
EFFECT: simple method of measuring the echo coefficient of walls of an anechoic chamber and simple design of the probe.
1 dwg
