Dual-circularly-polarized broadband wide-beam antenna
A dual circular polarization, wide bandwidth technology, applied in the direction of the antenna, antenna parts, antenna grounding switch structure connection, etc., can solve the problems of large lateral size, difficult to good axial ratio characteristics, etc., to achieve wide axial ratio beam, good circular Polarization characteristics, the effect of increasing the horizontal plane gain
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Embodiment 1
[0035] see Figure 1 to Figure 6 , a dual circularly polarized wide-bandwidth beam antenna, comprising a circular waveguide 1, a feed probe 5, a load probe 6, a bulkhead phase shifter 2 and a metal ring group; the feed probe 5, the load Both the probe 6 and the diaphragm phase shifter 2 are located in the circular waveguide 1, and the feeding probe 5 and the load probe 6 are separated on both sides of the diaphragm phase shifter 2; One end face of the circular waveguide 1 is closed, and the other end face is provided with an opening; the energy fed by the feeding probe 5 is converted by the diaphragm phase shifter to form a circularly polarized wave and then radiated outward from the opening; The metal ring group is located next to the opening for introducing a horizontal annular magnetic flow; the side wall of the circular waveguide 1 close to the opening is provided with a group of hollow grooves for introducing a vertical magnetic flow.
[0036]Through the circular wavegui...
Embodiment 2
[0038] On the basis of the above structure, at least two first vertical grooves 11 and at least two second vertical grooves 12 are arranged in the hollow groove group; the length of the first vertical groove 11 is longer than that of the second vertical groove 12 length, and the length directions of both are parallel to the axis of the circular waveguide 1; the first vertical slots 11 and the second vertical slots 12 are alternately arranged. The arrangement direction is clockwise or counterclockwise around the axis of the circular waveguide 1 . By adopting different slot depths to increase the pattern bandwidth of the antenna, it is more conducive to widening the bandwidth.
Embodiment 3
[0040] On the basis of the above structure, the opening is a circular mouth whose diameter is equal to the diameter of the circular waveguide 1; one end of the first vertical groove 11 extends to the edge of the opening, and the second vertical groove One end of 12 also extends to the edge of the opening, so that part of the electromagnetic wave is leaked and the axial ratio of the beam is improved.
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