Reflectarray and a millimetre wave radar
US7719463B2 · kind B2 · utility
7Cited by
16References
12Claims
0Family size
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Key dates
| Filing date | Oct 27, 2006 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Nov 17, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/933
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The reflectarray comprises an array of patch elements (10-13). Each patch element has a cut ring shape formed of a conductive ring with at least one crossing gap. The outer diameter and inner diameter and crossing gap are adjusted so that a phase shift β defined by the following relations is different from zero: φ(Eox)=φ(Eix)+α (1) φ(Eoy)=φ(Eiy)+α+β (2) where: −φ(Eox) and φ(Eoy) are the phases of the orthogonal components and of the reflected wave, respectively, −φ(Eix) and φ(Eiy) are the phases of orthogonal components and of the incident wave, respectively, −α is a phase angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.