METHOD OF MEASURING ANTENNA GAIN AND DEVICE THEREFOR Russian patent published in 2016 - IPC G01R29/10 

FIELD: radio engineering, communication.

SUBSTANCE: method is based on generating a high-frequency signal at a given frequency f; measuring the power P_e of the signal and emitting the signal using a reference antenna towards the analysed antenna located in a far zone; receiving the signal by the analysed antenna; measuring the power P_i of the signal and calculating antenna gain using the formula $$G_n=P_n\frac{4\pi R^2}{\mathrm{Pr}{S}_{eff}},$$ where $$R=12\frac{h^{2}f}{c},$$ h is the height of the phase centres of the reference antenna and the analysed antenna from the underlying surface, S_eff is the effective area of the reference antenna; calculating the distance between phase centres of the reference and analysed antennae R which corresponds to each given frequency value f; measuring the real distance between the phase centres of the reference and analysed antennae R_n; calculating the difference in distance R-R_n and moving the analysed antenna along a line which connects the phase centres of the reference and analysed antennae until R-R_n=0. The device comprises series-connected signal generator, power meter and reference antenna, as well as a positioning device on which the analysed antenna and a receiving device are mounted. The device also includes series-connected range-finding device, control and processing device, as well as a control command generator, the output of which is connected to the input of the positioning device, the second output, second and third inputs of the control device are connected to the input of the signal generator, the second output of the power meter, the output of the receiving device through a switching device, respectively, wherein the range-finding device is mounted on the positioning device.

EFFECT: low time costs for taking measurements and high measurement accuracy.

2 cl, 2 dwg