Electrically variable beam tilt antenna
US5917455A · kind A · utility
46Cited by
7References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1996 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Nov 13, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q11/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna assembly having an operating frequency and a vertical radiation pattern with a main lobe axis defining a downtilt angle with respect to the earth's surface. The antenna assembly comprises a plurality of antennas in first, second, and third antenna groups disposed along a backplane, the backplane having a longitudinal axis along which the antennas are disposed, and a phase adjustment mechanism disposed between the second and third antenna groups, such that adjustment of the phase adjustment mechanism results in variation of the vertical radiation pattern downtilt angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.