Circularly polarized antenna formed of a slotted cylindrical dipole
US4451829A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1979 |
| Grant date | May 29, 1984 |
| Priority date | — |
| Expiry date | Jun 25, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/282
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna, particularly suitable for two-way communication between a communication satellite and an aircraft in flight, having a circular polarization response, comprising a T-matched dipole element producing a pattern polarized parallel to the axis of the aircraft fuselage, and having a slot therein which is separately excited to produce an E field orthogonally polarized with respect to the pattern of the dipole. By exciting the dipole and the slot in phase quadrature, the combined patterns provide circular polarization as is necessary for satellite communications. The shape of the antenna enclosure has a very low drag and favorable aerodynamic characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.