Accurate and fast calculation method of far-field radiation field of large-scale mimo array antenna
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
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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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