Single-feed broadband low-profile circular polarization microstrip antenna
A microstrip antenna, low profile technology, applied in the directions of antennas, antenna components, antenna grounding devices, etc., can solve the problems of large size and complex feeding network, and achieve the effect of simple design, easy integration and low cost
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[0020] The present invention will be further described below in conjunction with specific examples.
[0021] see figure 1 with figure 2 As shown, the single-feed broadband low-profile circularly polarized microstrip antenna described in this embodiment uses a dielectric substrate 1 with a size of 200mm*200mm*3.2mm, the bottom surface is covered with copper as the floor 2, and the top surface is the main patch 3 and parasitic patches 41 and 42. The main patch is a circular patch with slots 51 and 52. The radius of the main patch is 18mm, and the size of the slots is 5mm*3.3mm. The parasitic patch is two fan rings, the inner and outer diameters of which are respectively 30mm and 38mm, the central angle phi=54.5 degrees, and the central position of the parasitic fan ring forms an angle of theta=20 degrees with the Y axis. Use the SMA connector 6 to feed power to the main patch, and the feeding position forms an angle of alpha=45 degrees with the X axis, and the distance from ...
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