Planar multiband frequency selective surfaces with stable filter response
US11545758B2 · kind B2 · utility
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32Claims
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Key dates
| Filing date | Mar 10, 2021 |
| Grant date | Jan 3, 2023 |
| Priority date | — |
| Expiry date | Mar 10, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A frequency selective surface (FSS) having periodicity between one eighth and one quarter of an operational wavelength of the FSS and a low profile. The FSS has multiple pattern elements which are used to produce multiple transmission poles, and in some embodiments multiple transmission zeros. The transmission poles and transmission zeros are in the Ka and Ku bands, making the FSS applicable to 5G application. The transmission poles and transmission zeros also have high angular stability an oblique incident angle as high as 60°, as well as polarization insensitivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.