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Millimeter wave radiator near-field radiation dose measurement method based on far-field plane scanning

A plane scanning and near-field radiation technology, applied in electrostatic field measurement, magnetic field size/direction, measurement device and other directions, can solve problems such as the influence of millimeter wave radiator output power, frequent replacement of measurement probes, and non-reflection of measurement data, etc. Achieve the effect of reducing measurement workload, high measurement accuracy, and reducing sampling points

Inactive Publication Date: 2020-11-06
XIDIAN UNIV
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Problems solved by technology

It is used to solve the problems that the measurement data does not reflect the accurate value of the measurement point, the multiple reflection of the wave, the influence of the output power of the millimeter wave radiator on the measurement data and the frequent replacement of the measurement probe in the existing measurement method

Method used

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  • Millimeter wave radiator near-field radiation dose measurement method based on far-field plane scanning
  • Millimeter wave radiator near-field radiation dose measurement method based on far-field plane scanning
  • Millimeter wave radiator near-field radiation dose measurement method based on far-field plane scanning

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Embodiment Construction

[0034] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and simulation experiments.

[0035] The measuring device was established before carrying out the invention steps, the millimeter wave radiator was installed on the cross slide, the main radiation direction of the millimeter wave radiator was vertically upward, and the two moving directions of the cross slide were along the E plane and the E surface of the millimeter wave radiator respectively. H plane; the measurement probe is placed vertically above the millimeter-wave radiator, the opening waveguide of the measurement probe is vertically downward, and the measurement probe can rotate around its main axis, so that the E-plane of the opening waveguide is parallel to the E-plane and H-plane of the millimeter-wave radiator respectively , to couple the electric fields in two orthogonal directions, the coupling power is given by the power meter con...

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Abstract

The invention relates to a millimeter wave radiator near-field radiation dose measurement method based on far-field plane scanning, which mainly solves the problems of low precision and low efficiencyof the existing millimeter wave radiator near-field radiation dose measurement. According to the invention, the method comprises the steps of measuring and calculating electric field complex amplitude distribution on a far-field scanning plane; converting the far-field electric field complex amplitude into a plane wave spectrum through inverse Fourier transform, decomposing the near-field dose space into near-field planes, converting the plane wave spectrum into the electric field complex amplitude and the magnetic field complex amplitude on each near-field plane through inverse Fourier transform, and calculating the power flow density. According to the method, the power is measured on the scanning plane located in the far field, the near-field radiation dose of the millimeter wave radiator is calculated according to the power, and compared with an existing direct measurement method, the measurement method provided by the invention has the advantages that the measurement precision andthe measurement efficiency are improved.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic field measurement, in particular to a near-field radiation dose measurement method of a millimeter-wave radiator based on far-field plane scanning. The invention can be applied to the experimental measurement of the electric field, the magnetic field and the power flow density in the near field area of ​​the millimeter wave radiator. Background technique [0002] Millimeter waves are widely used in medical and biological research. In medical applications, mmWave has traditionally been used to speed up wound healing after surgery, prevent infection, suppress scarring and activate the immune system, and recent uses of mmWave include diagnosing skin cancer and relieving pain. In biological applications, a typical example is to use millimeter waves to irradiate isolated epithelial cells and corneal cells. Cell samples are placed within a few wavelengths of the millimeter wave radiator to rece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/14G01R29/08G01R33/02G01R33/10G01R21/00
CPCG01R21/00G01R29/0857G01R29/0878G01R29/0892G01R29/14G01R33/0206G01R33/10
Inventor 赵建勋张旭但佳雄李帅
Owner XIDIAN UNIV
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