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

A technology of phased array antenna and measurement method, applied in the direction of antenna radiation pattern, etc., can solve problems such as excessive dependence on resource conditions

Active Publication Date: 2017-01-04
BEIJING INST OF SPACECRAFT SYST ENG
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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

Method used

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

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Embodiment Construction

[0018] It should be understood that the measurement of the far-field pattern of the phased array antenna can usually use the near-field scanning measurement method, the compact field measurement method or the far-field measurement method. The method for measuring the far-field pattern of the phased array antenna of the present invention can perform phase shift compensation on each array element of the phased array antenna when conditions such as a near-field scanning system, a compact field, or a far field are not available. Realize the measurement of the far-field pattern of the phased array antenna. The main steps of the method include: the first step is to measure and calculate the geometric relationship between each element of the phased array antenna and the antenna of the test system; the second step is to calculate the phase compensation required by each element of the phased array antenna according to the geometric relationship According to the amount of compensation, ...

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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...

Claims

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Application Information

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IPC IPC(8): G01R29/10
Inventor 阎鲁滨毛永飞杜海龙
Owner BEIJING INST OF SPACECRAFT SYST ENG
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