Method for measuring far-field pattern of phased-array antenna

Abstract

The invention provides a method for measuring the far-field pattern of a phased-array antenna. Through the phase shift amount compensation of each array element of the phased-array antenna, the method achieves the measurement of the far-field pattern of the phased-array antenna within a limited distance. The method comprises the steps: selecting a microwave chamber with a rotary table, enabling a to-be-measured phased-array antenna to be installed on the rotary table, and enabling the to-be-measured phased-array antenna and a testing system antenna to remain separated by a preset distance; measuring and calculating the geometrical relation between each array element of the to-be-measured phased-array antenna and the testing system antenna; carrying out the phase shift compensation of each array element of the to-be-measured phased-array antenna according to the geometrical relation; enabling the to-be-measured phased-array antenna to rotate through the rotary table, and executing the measurement of the far-field pattern of the to-be-measured phased-array antenna. Therefore, the method can achieve the measurement of the far-field pattern of the phased-array antenna through carrying out the phase shift compensation of all array elements of the phased-array antenna under the condition that there is no near-field scanning system, compact field or far field.

Description

technical field [0001] The invention belongs to the technical field of antenna testing, specifically to the technical field of phased array antennas and the beam forming technology of phased array antennas, and relates to an antenna testing scheme applicable to the measurement of far-field pattern of phased array antennas, in particular to a phased array antenna The far-field pattern measurement method realizes the measurement of the far-field pattern of the phased array antenna within a limited distance by performing phase shift compensation on each array element of the phased array antenna. Background technique [0002] A phased array antenna is an array antenna that contains a large number of array elements, and the phase and amplitude of each array element can be independently controlled. Under the condition that the physical shape and position of the antenna remain unchanged, by configuring the phase value and amplitude value of each array element, the beam shape or bea...

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Problems solved by technology

[0009] In order to solve the problem in the prior art that the measurement of the far field pattern of the phased array antenna is overly dependent on resource conditions such as planar near field, compact field, and far field, the present invention provides a method for measuring the far field pattern of the phased array antenna Program

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