Low sidelobe vortex beam generating method based on multi-ring array
A generation method and low sidelobe technology are applied to antenna arrays, devices for manufacturing antenna arrays, antenna arrays that are powered independently, etc., which can solve the problems of reducing the quality of orbital angular momentum communication and increasing the sidelobe gain of vortex beams. Enhanced integrity, reduced beam divergence angle, and improved communication quality
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[0031] The following describes the present invention in further detail with reference to the accompanying drawings and embodiments:
[0032] Reference figure 1 , The multi-ring array used in the present invention includes N concentric ring-shaped arrays, and the i-th ring-shaped array includes M i A microstrip antenna element uniformly distributed along the circumference, i=1, 2,...,N, N≥2, M i+1 ≥M i ≥4. This embodiment selects but is not limited to N=2 circular ring arrays to form a multi-ring array. Both the first circular circular array 1 and the second circular circular array 2 include eight microstrip antenna elements uniformly distributed along the circumference. , M 1 =M 2 =8, the center operating frequency of each microstrip antenna unit is f=3.9GHz.
[0033] Reference figure 2 , The present invention is based on the multi-ring array low-sidelobe vortex beam generation method, including the following steps:
[0034] Step 1. Determine the parameters for generating the vort...
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