METHOD FOR DYNAMIC CALIBRATION OF MOBILE MEASURING STANDS IN A WIDE FREQUENCY BAND Russian patent published in 2023 - IPC H01Q1/00 

FIELD: antenna measurements.

SUBSTANCE: invention relates to the measurements of the parameters of the scattering matrix to control the directivity and gain of the antennas. Essence: and the well-known method of two-port calibration of a vector network analyzer (VNA) is used, and the increase in measurement accuracy is achieved by switching to dynamic error correction of an extended moving measuring path. An extension of the analyzer model is proposed in such a way that each error parameter becomes a function of frequency, as well as a set of spatial coordinates, depending on the design and principle of operation of the measuring stand. Dynamic calibration allows you to determine the parameters of the error model and make a unique adjustment to the received data depending on the relative position of the measuring and tested antennas in space. The vector of error parameters of the model of the movable measuring stand is found, which depends on the frequency vector of the probing signal and the generalized vector of spatial coordinates, which includes information about the position of the measuring ports of the measuring and tested antennas in space. Calculation of calibration corrections is carried out for the data array coming from the VNA to a personal computer (PC) in the entire frequency band for the entire set of spatial coordinates. The method is especially useful in the case of serial measurements of the characteristics of a batch of antennas, when dynamic calibration is carried out once, and corrections are made to the results of all measurements.

EFFECT: increased accuracy of antenna measurements in a wide frequency band.

1 cl, 14 dwg