Apparatus for controlling array antenna comprising a plurality of antenna elements and method therefor
US5396256A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1993 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Oct 27, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/2605
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In an apparatus and method for controlling an array antenna including a predetermined plurality of M antenna elements arranged in a predetermined arrangement configuration, beam electric field strengths of a plurality of N beams of transmitting signals are calculated, and then signals representing the calculated beam electric field strengths equal to or larger than a threshold value are outputted. Thereafter, based on the outputted signals, there are calculated a plurality of N weight coefficients for the receiving signals respectively corresponding to the plurality of N beams of transmitting signals, such that a main beam of the array antenna is directed toward an incoming direction of a desired radio wave and also a level of the receiving signal in an incoming direction of an unnecessary radio wave are made zero. Further, based on the calculated plurality of N weight coefficients and a transmitting frequency of the transmitting signals, there is calculated at least either one of a plurality of M amounts of phase shift and a plurality of M amounts of amplitudes for the transmitting signals, and then the antenna elements are controlled in accordance with at least one of the calcula…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.