Integrated substrate gap waveguide feed slot coupled meta-surface circularly polarized antenna
A circularly polarized antenna and integrated substrate technology, applied in the direction of antenna, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problems of leakage, low gain, narrow bandwidth of millimeter wave antenna, etc. , the effect of improving energy transmission characteristics
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Embodiment 1
[0029] Such as figure 1 As shown, the present invention includes a first medium plate 1, a second medium plate 2, a third medium plate 3, and a fourth medium plate 4; the first medium plate 1, the second medium plate 2, the third medium plate 3, The fourth medium plate 4 is pressed together to form a whole. ISGW is the abbreviation of Substrate Integrated Gap Waveguide (SIGW).
[0030] The upper surface of the first dielectric board 1 has periodically arranged corner-cut patches 5 as a radiation structure, and the upper surface of the second dielectric board 2 has a first copper clad layer 7 as an antenna ground.
[0031] Such as figure 2 As shown, the corner-cut patch 5 is formed by symmetrically cutting off two corners on the diagonal on the basis of the square patch, and the cut-off corners are isosceles triangles. The corner-cut patch 5 is obtained by cutting off the same isosceles right-angled triangles on opposite corners of the square patch, and the circular polariz...
Embodiment 2
[0041] As described in Embodiment 1 above, the first dielectric plate 1, the second dielectric plate 2, and the third dielectric plate 3 are made of materials with a dielectric constant of 2.2 and a loss tangent of 0.0009; the fourth dielectric plate 4 is made of a dielectric constant Made of a material with a loss tangent of 4.4 and a loss tangent of 0.02. The overall size of the antenna is 12mm*12mm*0.1.362mm.
[0042] attached image 3 The shown return loss, gain and axial ratio simulation results show that the center frequency of the integrated substrate gap waveguide feeding slot coupling metasurface circularly polarized antenna of the present invention is 28.08GHz, and the -10dB impedance bandwidth is 25.34GHz-30.81GHz, and the absolute bandwidth 5.47GHz, the relative bandwidth is 19.5%, the 3dB axial ratio bandwidth is 28.15GHz-32.28GHz, the absolute bandwidth is 4.13GHz, the relative bandwidth is 14.7%, and the impedance bandwidth in-band gain reaches 8.9dBi-10.35dBi....
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