METHOD AND DEVICE FOR MEASURING CHARACTERISTICS OF PHASED ANTENNA ARRAY Russian patent published in 2017 - IPC G01R29/10 

FIELD: measuring equipment.

SUBSTANCE: group of inventions relates to the measuring technology, and more specifically to the measurement of the phased antenna array (FAA) channel parameters and the determination of the directivity pattern of the FAA elements. The method and the device for measuring the FAA channel parameters, the method and the device for determining the directivity pattern of the FAA elements are disclosed. Method for measuring the FAA channel parameters, in each channel of which a discrete multi-bit phase shifter is mounted, designed for the phase-shift signal manipulation in this FAA channel at the manipulation frequency Ω/2π contains the stages, on which: a) the FAA is powered with the initial signal at the frequency ω₀/2π, the phase shift signal manipulation is realized in the measured FAA channel at the manipulation frequency Ω/2π with only one discharge existing in this FAA channel of the discrete multi-bit phase shifter switching its another discharge; the emitted FAA signal is received by the measurement antenna fixed in the intermediate zone of the FAA radiation; a background signal is compensated in the received signal formed by the non-manipulated FAA channels due to the initial signal use at the frequency ω₀/2π, selecting the value of this part to be equal to the background radiation value and having an opposite phase; the quadrature signal demodulation is performed, obtained after the background signal compensation, to obtain the original signal I of the in-phase channel and the original signal Q of the quadrature channel; signal I of the in-phase channel and the signal Q of the quadrature channel are filtered at the manipulation frequency Ω/2π; synchronous detection of the filtered signals is carried out at the manipulation frequency Ω/2π, receiving the resulting signal I' of the in-phase channel and the resulting signal Q' of the quadrature channel; the amplitude A and the measured signal phase ϕ are determined according to the resulting signal I' of the in-phase channel and the resulting signal Q of the quadrature channel, characterizing the measured FAA channel. The method for determining the FAA element directivity pattern comprises the stages of extracting a fragment of the said FAA, including, at least, several tens of elements; setting the extracted FAA fragment on the pivoting means; performing the method stages for measuring the FAA channel parameters for various rotation angles of the said extracted FAA fragment with respect to the said measurement antenna; making the directivity pattern of the FAA element from the detected amplitudes and phases of each element of the said FAA fragment, taking into account the geometry of the said extracted FAA fragment and the said measurement antenna.

EFFECT: it is possible to perform parameter measurements with a fixed probe with high accuracy, typical for conventional amplifazometers.

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