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US 7,023,374 B2Granted
Method and apparatus for signal detection and jamming
AssigneesAbraham Jossef, Ron Yaacov Davidson
InventorsAbraham Jossef, Ron Yaacov Davidson, Raviv Levin, Itay Hect
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Abstract
Apparatus and method for multi-band, multi-frequency signal detection and transmission, comprising a multi-band wideband antenna, a receiver based on a plurality of synthesized down-converters and a plurality of synthesized programmable multi-channel phase-locked LOs, a DDS and a synthesized complex I/Q phase-detector, a control center based on a DSP connected with an ADC, plurality of DACs and an FPGA, and a plurality of synthesized programmable multi-channel transmitters synchronized with the DDS.
Claims32
Apparatus for multi-band, multi-frequency signal detection and transmission, comprising:
- a multi-band wideband antenna for receiving said signals;
- a receiver, connected with said antenna, said receiver comprising:
- a plurality of low-noise amplifiers (LNAs);
- a DDS driven by a reference source;
- a plurality of synthesized down-converters, each of said plurality of down-converters connected with a respective one of said LNAs;
- a plurality of synthesized programmable multi-channel phase-locked LOs based on said DDS, wherein each of said plurality of down-converters is connected with a respective one of said synthesized progran-iniable multi-channel LOs and wherein each of said LOs is synchronized with said DDS;
- and
- a synthesized complex I/Q phase-detector comprising an LO, said phase-detector synthesized LO based on said DDS, said phase-detector connected with said down-converters;
- a control center comprising:
- a powerful DSP;
- a memory unit connected with said DSP;
- analog-to-digital converter (ADC) connected with said I/Q phase detector and with said DSP;
- a plurality of digital-to-analog converters (DACs) connected with said DSP;
- and
- FPGA connected with said DSP and with said plurality of programmable synthesized receiver LOs, said FPGA additionally connected with said DDS for programming controls;
- and
- a multi-band transmitter comprising:
- a plurality of synthesized programmable multi-channel transmitters based on said DDS, each of said transmitters synchronized with said DDS and each of said transmitters connected with said FPGA for receiving programming controls;
- and
- a plurality of multi-band wide-band antennae for transmitting.
17 more elements
Apparatus for multi-band, multi-frequency signal detection and transmission, comprising:
- a multi-band wideband antenna for receiving said signals;
- a receiver, connected with said antenna, said receiver comprising:
- a plurality of low-noise amplifiers (LNAs);
- a DDS driven by a reference source;
- a plurality of synthesized down-converters, each of said plurality of down-converters connected with a respective one of said LNAs;
- a plurality of synthesized programmable multi-channel phase-locked LOs based on said DDS, wherein each of said plurality of down-converters is connected with a respective one of said synthesized programmable multi-channel LOs and wherein each of said LOs is synchronized with said DDS;
- and
- a synthesized complex I/Q phase-detector comprising a synthesized LO, said phase-detector synthesized LO based on said DDS, said phase-detector connected with said down-converters;
- control center comprising:
- a powerful DSP;
- a memory unit connected with said DSP;
- analog-to-digital converter (ADC) connected with said L/Q phase detector and with said DSP;
- a plurality of digital-to-analog converters (DACs) connected with said DSP;
- and
- FPGA connected with said DSP and with said plurality of programmable synthesized receiver LOs, said FPGA additionally connected with said DDS for programming controls;
- and
- a multi-band transmitter comprising:
- a plurality of multi-channel free-run VCOs, each of said VCOs connected with a respective one of said DACs for voltage tuning;
- and
- a plurality of multi-band wide-band antennae for transmitting.
17 more elements
Apparatus for multi-band, multi-frequency signal detection, comprising:
- a multi-band wideband antenna for receiving said signals;
- a receiver, connected with said antenna, said receiver comprising:
- a plurality of low-noise amplifiers (LNAs);
- a DDS driven by a reference source;
- a plurality of synthesized down-converters, each of said plurality of down-converters connected with a respective one of said LNAs;
- a plurality of synthesized programmable multi-channel phase-locked LOs based on said DDS, wherein each of said plurality of down-converters is connected with a respective one of said synthesized programmable multi-channel LOs and wherein each of said LOs is synchronized with said DDS;
- and
- a synthesized complex I/Q phase-detector comprising an LO, said phase-detector LO based on said DDS, said phase-detector connected with said down-converters;
- a control center comprising:
- a powerful DSP;
- a memory unit connected with said DSP;
- analog-to-digital converter (ADC) connected with said I/Q phase detector and with said DSP;
- a plurality of digital-to-analog converters (DACs) connected with said DSP;
- and
- FPGA connected with said DSP and with said plurality of programmable receiver LOs, said FPGA additionally connected with said DDS for programming controls.
12 more elements
Apparatus for multi-band, multi-frequency signal transmission, comprising:
- a control center comprising:
- a powerful DSP;
- a memory unit connected with said DSP;
- FPGA connected with said DSP;
- a DDS driven by a reference source and connected with said FPGA for programming controls;
- and
- a multi-band transmitter, comprising:
- a plurality of synthesized programmable multi-channel transmitters based on said DDS, each of said transmitters synchronized with said DDS and each of said transmitters connected with said FPGA for receiving programming controls;
- and
- a plurality of multi-band wide-band antennae for transmitting.
7 more elements
A method of detecting multi-band multi-channel signals, said method comprising the steps of:
- receiving a signal;
- down-converting said received signal to a base-band signal, wherein said base-band signal comprises a complex I and Q vector;
- converting said I and Q from analog to digital;
- processing said digital signal using FFT to locate the signal in the filtered frequency domain, said step of processing comprising the steps of:
- dividing said base-band bandwidth into F frequency sub-domains;
- repeating said step of dividing for each relevant one of said sub-domains R times;
- and
- following each of said dividing steps, storing information with respect to said digital signal signature.
5 more elements
A method of detecting and transmitting multi-band multi-channel signals of interest, comprising the steps of:
- receiving a signal;
- down-converting said received signal to a base-band signal, wherein said base-band signal comprises a complex I and Q vector;
- converting said I and Q from analog to digital;
- processing said digital signal using FFT to locate the signal in the filtered frequency domain, said step of processing comprising the steps of:
- dividing said base-band bandwidth into F frequency sub-domains;
- repeating said step of dividing for each relevant one of said sub-domains R times;
- and
- following each of said dividing steps, storing information with respect to said digital signal signature;
- using said stored signature for determining whether said signal is one of said signals of interest;
- and
- transmitting a signal, based on said stored signature of said detected signal of interest.
8 more elements
Dependencies are inferred from the claim text.