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US07847236B2 Fresnel antenna 有权
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Fresnel antenna
摘要:
A Fresnel antenna includes a plurality of Fresnel elements spaced to selectively attenuate electromagnetic waves having a predetermined wavelength, selected wavelengths, or range of wavelengths, and to concentrate electromagnetic waves having a predetermined wavelength, selected wavelengths, or range of wavelengths other than the attenuated wavelengths.
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