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US 5,204,683 AGranted
Radar receiver for a radar having a digital beam forming antenna
AssigneeThomson-CSF
InventorGerard Auvray
Life of this patent
Estimating the term…
Abstract
This radar receiver, in particular for a radar having an antenna with beam forming through computation, comprises essentially means for matched filtering having a bandwidth B, means for amplitude and phase detection, and means for analog-to-digital conversion, and is such that said means for analog-to-digital conversion work on the intermediate-frequency signals, at a frequency much higher than said intermediate frequency. The receiver can be fully constructed in gallium arsenide technology.
Claims10
A radar receiver comprising:
- a digital beam forming antenna including a plurality of elemental receivers, each of the elemental receivers comprising:
- a microwave amplifier receiving from an antenna element a received signal;
- a local oscillator;
- a mixer circuit connected to receive a signal from said microwave amplifier and a signal from said local oscillator converting said signal from said microwave amplifier into an intermediate frequency signal;
- an analog-to-digital converter for receiving said intermediate frequency signal, said analog-to-digital converter producing a digital signal from over sampling said intermediate frequency signal at a sampling rate much higher than said intermediate frequency signal frequency;
- and,
- means for forming two channels of quadrature related signals from said digital signal and for subsequently demodulating said quadrature signals.
4 more elements
Dependencies are inferred from the claim text.