Phase correcting reflection zone plate for focusing microwave
US5389944A · kind A · utility
7Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1993 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Aug 9, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/065
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A zone plate for focusing microwave energy is provided comprising a plurality of reflective portions corresponding to zones of the zone plate, each reflective portion reflecting energy .lambda./P out of phase with respect to adjacent reflective portions, where .lambda. is the wavelength of the energy. The reflective portions are positioned in P parallel planes mounted on low dielectric loss sheets and separated by a distance of .lambda./2P such that energy reflected from the reflective portions constructively interfere at a focus of the zone plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.