Test data processing method of spherical multi-probe antenna based on microwave network analysis

A microwave network and processing method technology, applied in the field of data processing, can solve the problems of inability to obtain the three-dimensional holographic radiation information of the antenna under test, inability to measure the near-field data of the antenna, etc., so as to shorten the processing time of the antenna test data and improve the running speed of the program. , the effect of reducing the number of multiplications

Inactive Publication Date: 2017-03-29
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0004] In order to overcome the shortcomings that the existing planar near-field antenna measurement method cannot measure the near-field data of the antenna at various pitch angles, and ...

Method used

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  • Test data processing method of spherical multi-probe antenna based on microwave network analysis
  • Test data processing method of spherical multi-probe antenna based on microwave network analysis
  • Test data processing method of spherical multi-probe antenna based on microwave network analysis

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Embodiment Construction

[0029] Now in conjunction with embodiment the present invention will be further described:

[0030] Choose a pyramidal horn antenna with a diameter of 52.07cm, and the test frequency f=2.4GHz. The specific steps are as follows:

[0031] 1) Use the electromagnetic simulation software HFSS to model and simulate the pyramidal horn antenna, and use the standard electric dipole probe to treat it as θ polarization and When polarized, at a distance of r from the antenna to be tested 0 The near-field data w(A,0,θ,φ) and Probe rotation angle χ 1 = 0, And bring into formula (1) to get μ=±1.

[0032]

[0033] Where λ is the working wavelength of the antenna under test, A is the distance from the probe to the antenna under test, θ is the pitch angle of the probe relative to the antenna under test, is the azimuth angle of the probe relative to the antenna under test.

[0034] 2) Use the w obtained in 1) ±1 (A, θ, φ) into the inverse fast Fourier transform of formula (2) a...

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Abstract

The invention relates to a rapid test data processing method of a spherical multi-probe antenna based on microwave network analysis. Based on an idea of microwave network analysis, the to-be-tested antenna and a probe system are seen as an open two-port network, excitation is equivalent to input of the network, reception signals of probes are equivalent to output, a transmission equation of the antenna is derived strictly via coordinate rotation, and a far-field directional diagram of the to-be-tested antenna is solved via the reception signals of the probes and probe response constants of different areas. The program operation speed is improved greatly, and the test data processing time of the antenna is shortened.

Description

technical field [0001] The invention relates to a data processing method, in particular to a spherical multi-probe antenna test data processing method based on microwave network analysis. Background technique [0002] The document "Quick Calculation Method for Near Field Measurement Antenna Far Field Characteristics, CN 104391183 A, China" discloses an extrapolation algorithm for antenna plane near field measurement. The x and y direction components of the electric field are obtained by the two near-field scanning tests, and then the two-dimensional Fourier transform is performed to determine the spectral function. Finally, the far-field pattern of the antenna is calculated by the stationary phase method. However, when using a planar near-field measurement antenna, the antenna to be tested does not move, and the test probe collects the amplitude and phase values ​​of the electric field at a distance less than half a wavelength on the horizontal or vertical plane relative to ...

Claims

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Application Information

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IPC IPC(8): G01R29/10
CPCG01R29/10
Inventor 李南京郭丽芳胡楚锋陈卫军郭淑霞郭鹏潘世洲
Owner NORTHWESTERN POLYTECHNICAL UNIV
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