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Interval analysis method for influence of uncertainty of spherical conformal antenna on power pattern

A technology of power direction and interval analysis, applied in the field of communication, to save time and computing resources, and avoid complex derivation

Pending Publication Date: 2022-02-11
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, when studying the influence of uncertain factors on the electrical performance of antennas, the existing work only conducts tolerance analysis on planar array antennas, and the most used method is the traditional method of enumerating the data results of multiple models and conducting comprehensive comparative analysis , usually requires a lot of analysis and calculation

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  • Interval analysis method for influence of uncertainty of spherical conformal antenna on power pattern
  • Interval analysis method for influence of uncertainty of spherical conformal antenna on power pattern
  • Interval analysis method for influence of uncertainty of spherical conformal antenna on power pattern

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Effect test

Embodiment 1

[0104] This embodiment provides the specific implementation of the interval analysis method for the influence of the uncertainty of the spherical conformal antenna on the power pattern, such as Figure 5 and 6 As shown, taking the radius as the interval variable, the radius of the spherical substrate is firstly used as the interval variable to study its interval analysis on the electrical performance of the spherical linear array: determine the patch placement angle according to the size of the unit patch antenna, and Rs represents the spherical substrate the radius of The superscript inf represents the lower limit, sup represents the upper limit, and the error ratio is δ, then there is Indicate the interval value of the radius of the spherical surface, and substitute it into the interval coordinate formula to obtain the interval value of the coordinate value of the center point of each antenna unit, and then perform interval analysis on the power pattern of the spherical s...

Embodiment 2

[0109] This embodiment provides the specific implementation of the interval analysis method for the influence of the uncertainty of the spherical conformal antenna on the power pattern, such as Figure 7and 8 As shown, taking the excitation amplitude of the array factor as the interval variable, adopting the interval analysis method of calculating the imaginary part and the real part separately, bringing the formula (15) into the formulas (13) and (14) to obtain the upper and lower limits of the power pattern, Using the approximate formula of the unit factor of the E surface, uniform excitation, the amplitude error ratio of the excitation is δ={1%, 3%, 5%}, and compared with the Monte Carlo (MC, 20000 times) method, so as to obtain the conformal Interval results of array antenna E-plane power pattern, such as Figure 7 and Figure 8 As shown, the results are shown in Table 2.

[0110] Table 2 Figure 7 and Figure 8 Value of SLL for medium power pattern (dB)

[0111] ...

Embodiment 3

[0113] This embodiment provides the specific implementation of the interval analysis method for the influence of the uncertainty of the spherical conformal antenna on the power pattern, such as Figure 9 and 10 As shown, taking the excitation phase of the array factor as the interval variable, using the fitting formula of the element factor of the E surface, uniform excitation, bmn=0, the error ratio is β({1deg, 2deg, 3deg}), and the Monte Carlo The results are compared, and the interval results of CAA are obtained Figure 9 and Figure 10 , and the results are shown in Table 3.

[0114] table 3 Figure 9 and Figure 10 Value of SLL for medium power pattern (dB)

[0115]

[0116] in conclusion:

[0117] For the non-deployable curved spherical conformal load-carrying antenna array, the element factor fitting formula and the interval calculation method of real and imaginary parts of the array factor (RIA) are used to derive and use MATLAB for the non-deployable spherica...

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Abstract

The invention discloses an interval analysis method for the influence of the uncertainty of a spherical conformal antenna on a power pattern. The method comprises the following steps of: S1, creating an analysis model of the power pattern of an array antenna; S2, conducting matrix factor analysis; S3, analyzing unit factors; S4, calculating the power pattern; and S5, performing interval analysis on the power pattern of the spherical surface. The method is suitable for the technical field of communication, an agent model is used for representing a closed interval formula of a spherical patch antenna pattern (serving as an array element), and complex derivation of interval unit factors is avoided; the tolerance analysis method is widely used in the antenna design period and before the antenna prototype manufacturing period to predict errors / tolerances possibly influencing the radiation performance in the antenna structure so as to ensure that the antenna works in operation; compared with a traditional statistical method, the method greatly saves time and computing resources.

Description

technical field [0001] The invention belongs to the technical field of communication, in particular to an interval analysis method for the influence of spherical conformal antenna uncertainty on a power pattern. Background technique [0002] For high-speed moving aircraft, due to the fast cruising speed, in order to minimize its air resistance, the antenna installed on the flight carrier is required to have a very low profile. The aircraft becomes one body, and under this application requirement, the conformal antenna emerges as the times require. As the name implies, a conformal antenna is to wrap the antenna on a curved surface carrier. The conformal antenna used in practice generally refers to a conformal array antenna, which means that each antenna unit that constitutes the array is wrapped on the same curved surface carrier, so that the antenna array The faces are aligned with the carrier outline. Compared with planar array antennas, conformal array antennas can expan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F111/02
CPCG06F30/20G06F2111/02Y02E60/00
Inventor 李鹏丁广大李瑞波许万业胡乃岗保罗·罗卡宋立伟王伟
Owner XIDIAN UNIV
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