Directional antenna apparatus
US6486830B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 23, 2000 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Aug 23, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0848
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Signals received by antenna elements are respectively converted to lower frequency signals by the frequency converters. The lower frequency signals are then converted to the digital signals by A/D converters and supplied to a digital signal processing unit. The digital signal processing unit weights the digitized signals on the amplitude and the phase for each signal for optimally controlling the directivity. The weighted signals from the digital signal processing unit are converted to the analog signals by D/A converters and added by an adder. The added signal is then converted by a frequency converter to an original frequency of the received signals by the antenna elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.