Accurate and fast calculation method of far-field radiation field of large-scale mimo array antenna
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An array antenna and fast calculation technology, applied in calculation, special data processing applications, instruments, etc., can solve the problems of inability to quickly and accurately implement antenna radiation field calculation, calculation time consumption, etc., and achieve fast analysis speed and high synthesis accuracy Effect
Active Publication Date: 2018-01-23
THE PLA INFORMATION ENG UNIV
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However, due to the limitation of the computing power of a single computer, when the scale of the array antenna is too large, any full-wave simulation method, even the current high-efficiency Hybrid MoM Solution, is also limited by the huge memory and computing time. The calculation of the antenna radiation field cannot be performed quickly and accurately due to consumption, and an accurate and fast analysis method for the far-field radiation of massive MIMO array antennas is proposed
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Embodiment 1
[0043] Example 1: Combining Figure 1-Figure 2 , an accurate and fast calculation method for the far-field radiation field of a massive MIMO array antenna, the calculation method includes the following steps:
[0044] Step 1: Determine the element spacing parameter d of the M×N planar array antenna x , d y , where d x is the element spacing in the x direction of the planar array antenna, d y is the array element spacing in the y direction of the planar array antenna, M×N element planar array antenna reference figure 1 shown.
[0045] Step 2: Solve the relationship between the incident field and the scattered field of the unit antenna, which is:
[0046] Considering the incident plane wave, the incident field of the antenna element and scattered field According to the form of spherical vector wave expansion, we have
[0047]
[0048]
[0049] where M mn , N mn represents the spherical vector wave function, The spherical vector wave coefficient of the scatter...
Embodiment 2
[0073] Embodiment 2: In combination with Table 1, the present invention will be further described by taking an 8×8 planar array as an example.
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[0075] Table 1
[0076] First, determine the structural parameters of the 8×8 element planar array antenna.
[0077] Secondly, determine the size of the environment sub-array in the array;
[0078] Considering the three distribution characteristics in the x direction and y direction: edge, sub-edge and array distribution, and the symmetry of the planar array antenna structure, a total of 9 sub-arrays need to be extracted, as s...
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Abstract
The invention belongs to the field of electromagnetic numerical calculation, and specifically relates to an accurate and fast analysis method for far-field radiation of a large-scale MIMO array antenna, including: determining the structural parameters of the M×N element planar array antenna; solving the relationship between the incident field and the scattering field of the unit antenna; according to Mutual coupling characteristics between unit antennas, select the sub-array form and size of the extraction unit under the array environment conditions; for the antenna sub-array of the extraction unit, solve the far-field radiation pattern of the unit in the sub-array; according to the far-field radiation direction of the unit in the array Figure, according to the principle of superposition to calculate the array antenna far-field radiation pattern. The present invention utilizes the accuracy of mutual coupling calculation to well solve the limitation of the calculation capacity of a single computer in methods such as the method of moments, finite element method, and time domain finite difference, when the scale of the array antenna is too large , the full-wave simulation method cannot quickly and accurately implement the calculation of the antenna radiation field due to the huge consumption of memory and calculation time. It can analyze the pattern of large-scale and conformal array antennas, and has high synthesis accuracy and fast analysis speed. advantage.
Description
technical field [0001] The invention belongs to the field of electromagnetic numerical calculation, and in particular relates to an accurate and rapid analysis method for the far-field radiation of a large-scale MIMO array antenna solved by an iterative scattering algorithm. Background technique [0002] The large-scale antenna array system (Massive MIMO) is considered to be the most potential transmission technology for 5G in the future, and it is the extension and extension of MIMO technology in the existing 4G network. The Massive MIMO system plays a very good role in increasing the system capacity, improving the communication quality and the versatility of devices in complex environments. It conforms to the current development trend that radio frequency components are closer to the antenna, reduces maintenance costs and energy costs, and further improves network performance and deployment flexibility. It plays an important role in the fifth-generation mobile communicatio...
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