Circularly polarized leaky wave antenna based on substrate integrated mirror dielectric waveguide
A dielectric waveguide and substrate integration technology, which is applied to leaky waveguide antennas, antennas, antenna grounding devices, etc., can solve the problems of difficulty in reducing the unit spacing and unit size, and it is difficult to achieve miniaturization, and achieve the effect of suppressing OSB.
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Embodiment 1
[0041] A circularly polarized leaky-wave antenna based on a substrate-integrated image dielectric waveguide, characterized in that it includes a feeder structure 1, a radiation structure 2 and a feed structure 3,
[0042] The feeder structure 1 of the antenna includes, from bottom to top, the metal ground 12 of the lower layer of the feeder, and the feeder dielectric layer 11, wherein the feeder dielectric layer 11 is symmetrically arranged with two air hole areas 112 left and right along the central axis, and between the two air hole areas 112 Be the central transmission belt 111;
[0043] The radiating structure 2 includes a plurality of radiating units, and the radiating unit includes an exciting horizontally polarized wave structure 21 and an exciting vertically polarized wave structure 22. The relative positions of the two make the two excited linearly polarized waves have a phase difference of π / 2, Exciting horizontally polarized wave structure 21 includes two metal stri...
Embodiment 2
[0051] Such as Figure 8 , The difference between this embodiment and Embodiment 1 is that: the two single metal strips in the horizontally polarized radiation structure of each radiation unit become two parallel metal strips.
Embodiment 3
[0053] Such as Figure 9 As shown, the difference between this embodiment and Embodiment 1 is that in the direction perpendicular to the propagation direction of the feeder electromagnetic wave, multiple radiation parts are arranged side by side, and the original one-dimensional linear array is expanded into a two-dimensional array, and then two-dimensional Dimensional shaping; the feeder structure of the formed two-dimensional array shares the feeder medium layer 11 and the metal ground 12 of the feeder lower layer.
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