Dual-polarization three-order band-pass three-dimensional frequency selective surface
A frequency-selective surface and first-order bandpass technology, which is applied in the field of electromagnetic fields and microwaves, can solve the problems of narrow out-of-band suppression bandwidth, poor frequency selectivity, and large electrical size, and achieve good angular stability, flat third-order passband, and high The effect of frequency selectivity
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[0013] In order to describe the technical solution disclosed in the present invention in detail, further elaboration will be made below in conjunction with the accompanying drawings and specific embodiments.
[0014] figure 1 A three-dimensional schematic diagram of the unit structure of the dual-polarization third-order bandpass three-dimensional frequency selective surface proposed by the present invention. Each unit structure includes a metal square cylinder 1 and a medium square 2 . Both the upper surface and the lower surface of the unit structure form a resonant unit composed of a metal square ring and an upper end surface of a metal square cylinder.
[0015] figure 2 A schematic diagram of the components constituting the unit structure of the present invention is given. figure 2 (a) is a metal square cylinder 1; figure 2 (b) is medium square 2. The metal square ring 21 , the metal square ring 22 and the metal square ring 23 are respectively etched at the central...
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