Antenna apparatus and communication system
US10056692B2 · kind B2 · utility
0Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2016 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Nov 22, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q15/0013
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna includes a first body having a ring monopole and a second body positioned below the first body. The second body can have a plurality of notched ring resonators. A spacer can be positioned between the first and second bodies. In some embodiments, the second body can define an artificial ground. In addition, the ring resonators can be arranged and configured to generate a 180° phase difference between polarized waves so that a radiated wave from the ring monopole and a reflected wave from the artificial ground have orthogonal polarizations and a 90° phase difference to form a circularly polarized radiated wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.