Adjustable beam tilt antenna
US5512914A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1995 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Jan 9, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An omni-directional, collinear, vertical base station antenna having an adjustable or variable radiation beam tilt capability. Terminations at the drive or feed points are provided by an adjustable, capacitive coupling structure at the feed points between the conductive elements of a feed structure and a radiator assembly for adjusting the physical position of the feed points and thereby the phase of the feed points relative to the upper and lower portions of the antenna to alter the deflection angle of the radiation produced. A signal feed, having first and second conductive feed elements, is connectable to a signal feed line to couple a signal between the feed line and the radiator assembly. An adjustable support and control mechanism supports said elongated radiator assembly and said signal feed for relative movement therebetween to effect selective adjustment of the feed points of said capacitive coupling structure along the length of said elongated di-pole radiator assembly to thereby effect adjustment of the beam angle of the radiation pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.