Curvilinear circular polarizer
A circular polarizer and curved technology, applied in the field of communication, can solve the problems of complex production, high processing cost, and many layers of printed boards, and achieve low profile, high-purity circular polarization, and high circular polarization purity. Effect
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Embodiment 1
[0045] A specific embodiment of the present invention discloses a curved circular polarizer, including an upper curved grid layer 1 and a lower curved grid layer 2 arranged in parallel from top to bottom, as figure 1 As shown, the two curved gate layers are aligned from top to bottom.
[0046] The linearly polarized wave passes through the lower curved grid layer 2 and the upper curved grid layer 1 sequentially from bottom to top.
[0047] The lower curved grid layer 2 is used to receive a linearly polarized wave whose electric field vector forms an angle of 45° with the plane of the lower curved grid layer 2, and generate a linearly polarized electric field vector 1 around it.
[0048] The upper curved grid layer 1 is used to receive the linearly polarized wave, generate a linearly polarized electric field vector 2 with a 90° phase difference with the linearly polarized electric field vector 1, and generate a left-handed wave above the upper curved grid layer 1. Or right-han...
Embodiment 2
[0052] Optimizing on the basis of Example 1, such as figure 2 As shown, the upper curved grid layer 1 includes M groups of curved metal grids 3 arranged periodically in the direction of the grids, and N corner-cutting basic units in each group are arranged periodically. The corner-cutting basic unit adopts a rectangular wave unit structure with corner cutting; the M≥2, N≥2. The corner-cut basic unit can reduce the standing wave, reduce the S11 value, and reduce the transmission loss. Therefore, the curved metal grid constructed by the corner-cutting basic unit can blunt the sharp edges, reduce the VSWR, reduce the S11 value, and reduce the transmission loss.
[0053] Preferably, the above periodic arrangement may be a horizontal periodic arrangement.
[0054] Preferably, the structure, size and parameters of the lower curved gate layer 2 are the same as those of the upper curved gate layer 1 . That is, both have the same set of M curved metal grids 4, such as figure 2 sh...
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