Feedback limited adaptive antenna with signal environment power level compensation
US4717919A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 1985 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | May 28, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/2813
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An adaptive antenna comprising at least two sensors for receiving electromagnetic signals and for producing first signals; the antenna further including divider means for dividing each first signal into respective second and third signals; weighting means for modifying each respective second signal according to a quantized weighting function; summing means for summing the respective second signals to provide a fourth signal; means for producing a system feedback signal in response to the fourth signal; limiter means for limiting the dynamic range of the system feedback signal; correlator means for correlating the respective third signals with the limited system feedback signal to produce respective correlator output signals; means for determining the signal environment power level of the far field sensed by the at least two sensors and for providing a fifth signal substantially corresponding to 1/.sqroot.P, where P is the signal power level incident on the adaptive array; and means for modifying the weighting function based upon the correlator output signals and the fifth signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.