Millimeter-wave circularly-polarized array antenna and radiation body thereof
An array antenna and radiator technology, applied in the field of wireless communication, can solve the problem of complex antenna structure, and achieve the effects of simplified structure, wide bandwidth, high axial ratio, wide impedance bandwidth and axial ratio bandwidth.
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Embodiment 1
[0047] like figure 1 and figure 2 As shown, this embodiment provides a millimeter-wave circularly polarized array antenna, which is a 4*4 array antenna, which includes a radiator 1, a first dielectric substrate 2, and a first floor 3 arranged in sequence from top to bottom. , the second dielectric substrate 4 and the feed network 5, it can be seen that a five-layer structure is formed, wherein the radiator 1 is located on the first layer, the first dielectric substrate 2 is located on the first layer, the first floor 3 is located on the third layer, and the second dielectric The substrate 4 is located on the fourth floor, and the feed network 5 is located on the fifth floor.
[0048] Both the first dielectric substrate 2 and the second dielectric substrate 4 are PCB boards, but materials with different dielectric constants and different loss tangents are used. The materials can be FR-4, polyimide, polytetrafluoroethylene glass Any two of cloth and co-fired ceramics.
[004...
Embodiment 2
[0057] The millimeter-wave circularly polarized array antenna in this embodiment can also be a 5*5 array antenna, a 6*6 array antenna, etc., or an array antenna with different rows and columns, such as a 4*6 array antenna, a 6*8 array antenna, etc., and the radiation The numbers of units 12, slots 31 and first power dividers 52 need to be adjusted accordingly. All the other are with embodiment 1.
[0058] In summary, the millimeter-wave circularly polarized array antenna of the present invention has a longer bandwidth, a larger gain, a wider circular polarization axis ratio, and a simple structure, which can meet the requirements of the Ministry of Industry and Information Technology for mobile services in the millimeter-wave frequency band. Requirements for medium broadband wireless access systems (42.3-48.4GHz).
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