Pointing control for antenna system with electronic scannning and digital beam forming
US5084708A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1990 |
| Grant date | Jan 28, 1992 |
| Priority date | — |
| Expiry date | Aug 15, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/2682
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
This antenna system has a plurality of elementary antennas configured into an array, wherein there is a reception (or transmission) channel associated with each antenna or sub-array of antennas, said reception channel having, in series: PA1 an active reception module, PA1 delay means capable of selectively introducing a pure delay of propagation of the signal picked up by the elementary antenna so as to produce a gradation of delays for the different respective elementary antennas, said gradation of delays enabling the definition of a desired pointing in the direction of the wave to be received with respect to the orientation proper to the array; PA1 and an analog/digital converter receiving, at input, the analog signal received, to deliver, at output, a corresponding digitized signal to a beam forming computer. The delay means are digital means, positioned at output of the analog/digital converter and typically comprise a digitally programmable delay generator comprising a programming input that receives a digital control word, defining the delay to be produced, from a pointing computer, a triggering input that receives pulses digitally representing the signal to be delayed and a …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.