Direct digital synthesizer driven phased array antenna
US5943010A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1997 |
| Grant date | Aug 24, 1999 |
| Priority date | — |
| Expiry date | Nov 12, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/24
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A digitally beam formed phased array antenna capable of both transmitting and receiving signals is constructed from a series of digitally controlled antenna elements. To transmit signals, a series of direct digital synthesizers is used to drive the antenna elements forming the phased array. Each direct digital synthesizer is programmed from a common digital processor with specific time and phase delay information such that the signals from the array combine to form a desired antenna pattern. To receive signals, signals from each antenna element in the phased array are processed by analog to digital converter. The digitized signals are then pre-processed in a time and phase delay preprocessor which receives time and phase delay information from a corresponding direct digital synthesizer prior to signal combining in a common digital processor. The digitally beam formed antenna, thus formed, allows for remote reconfiguration, flexible partitioning, and generation of multiple and independent beams from a single phased array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.