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Equivalent method for calculating a radiation near field of circular-aperture antenna

An antenna radiation, circular aperture technology, applied in the field of effect, to achieve the effect of engineering applicability

Active Publication Date: 2021-03-09
CHINA SHIP DEV & DESIGN CENT
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Problems solved by technology

[0003] Commercial simulation software usually builds or imports a geometric model, then conducts electromagnetic subdivision, and finally uses various computational electromagnetics methods to perform numerical calculations, and can accurately obtain the near-field radiation of the reflector antenna. This method has high calculation accuracy, but the premise is The detailed geometric parameters or geometric model of the antenna must be obtained

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  • Equivalent method for calculating a radiation near field of circular-aperture antenna
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  • Equivalent method for calculating a radiation near field of circular-aperture antenna

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] Such as figure 1 As shown, the equivalent method for calculating the near-field radiation of the circular aperture antenna in the embodiment of the present invention includes the following steps:

[0038] Step 1. Set sampling points on the aperture surface, and the spacing between sampling points is 1 / 10 of the wavelength;

[0039] Step 2. Calculate the corresponding equivalent magnetic current according to the field distribution at each sampling point. The aperture surface field distribution can be obtained according to the test, or the aperture field distribution function;

[0040] Step...

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Abstract

The invention discloses an equivalent method for calculating a radiation near field of a circular-aperture antenna, and the method comprises the following steps: 1, setting a plurality of sampling points on an aperture surface of the circular-aperture antenna at certain intervals; 2, calculating a corresponding equivalent magnetic current according to the field distribution at each sampling point;3, calculating a radiation field of the equivalent magnetic current at each sampling point in space; 4, superposing the radiation fields of the sampling points to obtain a radiation total field of equivalent magnetic current on the aperture surface; and 5, calculating a field intensity correction coefficient. The invention is suitable for circular aperture antennas, and can also be popularized and applied to antennas with other shapes and apertures; and the limitation that a geometric model or geometric parameters cannot be obtained is overcome, and engineering applicability is achieved.

Description

technical field [0001] The invention relates to the field of electromagnetic compatibility, in particular to an equivalent method for calculating the radiation near field of a circular aperture antenna. Background technique [0002] The reflector antenna is one of the widely used microwave antenna forms, and the analysis of the radiation characteristics of the reflector antenna is of great significance for antenna layout and electromagnetic safety analysis. [0003] Commercial simulation software usually builds or imports a geometric model, then conducts electromagnetic subdivision, and finally uses various computational electromagnetics methods to perform numerical calculations, and can accurately obtain the near-field radiation of the reflector antenna. This method has high calculation accuracy, but the premise is Detailed geometric parameters or a geometric model of the antenna must be obtained. [0004] In the case that the geometric parameters cannot be obtained for mo...

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Application Information

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IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 温定娥吴为军方重华王冬冬张崎
Owner CHINA SHIP DEV & DESIGN CENT
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