Millimeter-wave 360-DEG omnidirectional-scan dielectric cylinder lens antenna
A lens antenna, dielectric column technology, applied in the direction of antennas, antenna arrays, electrical components, etc., to achieve low cost, convenient connection, and simple effects
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[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0038] In the case of horizontal polarization, in order to ensure that the parallel plate waveguide composed of two adjacent metal discs excites TE 10 mode, the height of the parallel-plate waveguide must be greater than half a wavelength and less than one wavelength at the same time. The propagation constant k of this mode is related to the height of the parallel plate waveguide, that is, the height of the dielectric cylindrical lens, and the efficiency of the cylindrical lens antenna also depends on this height. Therefore, the height of the parallel plate waveguide is chosen as , which can not only ensure the highest efficiency of the cylindrical lens antenna, but also make the focal length of the cylindrical lens smaller, reduce the scattering of electromagnetic waves between the metal discs, and reduce the level of side lobes and back lobes. The ...
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