A dual-polarized filter antenna with high selectivity and low cross-polarization
A filter antenna, high selectivity technology, applied in the direction of antenna, slot antenna, electrical short antenna, etc., can solve the problem that the structure cannot expand the dual-polarization filter antenna, etc., to achieve obvious out-of-band suppression effect, steep edge, directional radiation performance Good results
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[0054] figure 1 and Figure 2(a)-Figure 2(d)As shown, a dual-polarized filter antenna with high selectivity and low cross-polarization does not require an additional filter circuit and has a band-pass filter response, including a metal reflective floor 1 at the bottom, a feed patch 2 in the middle, and a top The parasitic patch 3 and two orthogonal H-shaped feeders 4, 5. The side length of the parasitic patch is P 1 , the side length of the feed patch is P 2 , the upper surface of the first dielectric substrate 9 is printed with parasitic patches, and the feed patch is printed on the upper surface of the second dielectric substrate 10, the dielectric constants of the first and second dielectric plates are both 2.65, and the thicknesses are uniform. It is 1mm, and the side length is represented by L. There is a height h between the first and second dielectric plates 1 The air layer, this design can increase the bandwidth and gain performance of the antenna.
[0055] The m...
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