METHOD OF DETERMINING GAIN OF FOCUSED ANTENNA ARRAY Russian patent published in 2019 - IPC G01R29/10 

FIELD: physics.

SUBSTANCE: invention relates to antenna measurements and can be used for experimental evaluation of efficiency of antenna arrays (AA) focused in near electromagnetic field (EMF). Method includes a signal generator which, through a calibrated attenuator and a standing wave meter, is connected to the AA, in the mode of transmitting the energy level E_s acting on the meter EMF generated by the AR at the focusing point M, including calculation and experimental realization of the amplitude-phase distribution of complex currents exciting AA in the focusing mode to obtain a fixed level E_s at point M; determining readings of calibrated attenuator N_s, dB and feed channel ratio K_s, dB, as well as their reference values N_e, dB and K_e, dB in a similar way and at the same value of fixed level E_s at point M; with subsequent determination of amplification coefficient of AR by formula G_s, dB = N_e, dB - N_s, dB + K_e, dB - K_s, dB + G_e, dB, where Ge, dB is a reference gain value, characterized in that reference values of N_e, dB and K_e, dB, determined experimentally, and a reference gain G_e, dB, determined by design and (or) experiment, correspond to standard uniform amplitude-phase distribution of complex currents exciting AA.

EFFECT: technical result consists in improvement of accuracy of determination of amplification factor of focused AA.

1 cl, 2 dwg