Radio frequency jammer utilizing antenna array

Abstract

A radio frequency (RF) jammer includes a processing circuit, an RF front-end module, and an antenna array. The processing circuit has a multi-channel interface for transmitting N sets of output signals via the multi-channel interface. N is an integer greater than 1. The RF front-end module is coupled to the multi-channel interface to receive the N sets of output signals and generate N sets of RF signals. The phase relationship between the RF signals contained in each set is determined based on the location information of the target device and the temperature detection result of the RF front-end module. The antenna array is coupled to the RF front-end module to receive the N sets of RF signals and transmit N beamforming signals directed at the target device.

Claims

1. A radio frequency jammer, comprising: a processing circuit having a multi-channel interface for transmitting N sets of output signals via the multi-channel interface, wherein N is an integer greater than 1; a radio frequency front-end module coupled to the multi-channel interface for receiving the N sets of output signals to generate N sets of radio frequency signals, wherein the phase relationship between the radio frequency signals contained in each set of radio frequency signals is determined based on the position information of a target device and the temperature detection result of the radio frequency front-end module; and an antenna array coupled to the radio frequency front-end module for receiving the N sets of radio frequency signals to transmit N beamforming signals directed at the target device.

2. The radio frequency jammer as claimed in claim 1, wherein each radio frequency signal is output via a power amplifier of the radio frequency front-end module, and the power amplifier operates in the compression region between the linear region and the saturation region.

3. The radio frequency jammer as claimed in claim 1, wherein each set of output signals is a single-element set having a single output signal; the processing circuitry is used to transmit N output signals respectively via N channels of the multi-channel interface.

4. The radio frequency jammer as described in claim 3, wherein the processing circuit is used to generate a control signal based on the location information of the target device; the radio frequency front-end module includes: N radio frequency front-end circuits coupled to the N channels to receive the N output signals respectively, each radio frequency front-end circuit being used to generate a set of radio frequency signals based on a corresponding output signal and the control signal.

5. The radio frequency jammer as claimed in claim 4, wherein the group of radio frequency signals comprises M radio frequency signals, where M is an integer greater than 1; the radio frequency front-end circuit comprises: a distribution stage for dividing the output signal into M electrical signals; a phase shift stage coupled to the distribution stage for performing a phase shift operation on the M electrical signals according to the control signal, and thereby generating M phase shift signals; and an amplification stage coupled to the phase shift stage for amplifying the M phase shift signals to generate the M radio frequency signals.

6. The radio frequency jammer as claimed in claim 4, wherein the antenna array comprises: N antenna subarrays, each coupled to the N radio frequency front-end circuits, for receiving the N sets of radio frequency signals to transmit the N beamforming signals respectively.

7. The radio frequency jammer as described in claim 1, wherein each set of output signals contains M output signals with the same frequency, the frequencies of the M output signals being different from the frequencies of the output signals contained in other sets of output signals, and M being an integer greater than 1; the processing circuit is further used to control the phase relationship between the output signals contained in each set of output signals based on the location information of the target device and the temperature detection result of the radio frequency front-end module.

8. The radio frequency jammer as claimed in claim 7, wherein the processing circuit is used to transmit the M output signals of each set of output signals via the M channels of the multi-channel interface, and the N sets of output signals share the M channels; the radio frequency front-end module includes: M radio frequency front-end circuits, respectively coupled to the M channels, the M radio frequency circuits being used to receive the M output signals respectively to generate the M radio frequency signals contained in the same set of radio frequency signals.

9. The radio frequency jammer as claimed in claim 8, wherein the antenna array comprises M antennas respectively coupled to the M radio frequency front-end circuits; each radio frequency front-end circuit comprises: a plurality of amplifier circuits having different operating frequency ranges, wherein each amplifier circuit is selectively coupled between a corresponding channel and a corresponding antenna.

10. The radio frequency jammer as claimed in claim 7, wherein the radio frequency front-end module includes: N sets of radio frequency front-end circuits for receiving the N sets of output signals to generate the N sets of radio frequency signals respectively.

11. The radio frequency jammer as claimed in claim 10, wherein the antenna array comprises: N antenna subarrays, each coupled to the N radio frequency front-end circuits, for receiving the N sets of radio frequency signals to transmit the N beamforming signals respectively.

12. The radio frequency jammer as claimed in claim 1, wherein the N frequencies of the N beamforming signals are respectively located in N operating frequency bands of the target device; the processing circuit is used to determine the N operating frequency bands of the target device based on a first input signal, and to set the frequencies of the N sets of output signals according to the N operating frequency bands; the radio frequency jammer further comprises: an antenna for receiving an electromagnetic wave signal transmitted by the target device to generate a radio frequency signal; and a radio frequency front-end circuit coupled to the antenna and the processing circuit for processing the radio frequency signal output by the antenna to generate the first input signal.

13. The radio frequency jammer as claimed in claim 1, wherein the processing circuitry is used to perform beamforming processing on a plurality of second input signals to determine the location information of the target device; the radio frequency jammer further comprises: a plurality of antennas arranged in an array for receiving a plurality of electromagnetic wave signals transmitted by the target device to generate a plurality of radio frequency signals; and a radio frequency front-end circuitry coupled to the plurality of antennas and the processing circuitry for processing the plurality of radio frequency signals output by the plurality of antennas to generate the plurality of second input signals.

14. A radio frequency jammer, comprising: a processing circuit having a multi-channel interface for generating an output signal with a frequency located in an operating frequency band of a target device; and a first radio frequency front-end circuit coupled to the multi-channel interface for receiving the output signal to generate M radio frequency signals, M being an integer greater than 1, wherein the first radio frequency front-end circuit comprises: a distribution stage for dividing the output signal into M electrical signals; and a phase shift stage coupled to the distribution stage for generating M phase shift signals based on the M electrical signals. And an amplification stage, coupled to the phase shift stage, for amplifying the M phase shift signals to generate the M radio frequency signals; And an antenna array coupled to the amplification stage to receive the M radio frequency signals to send a beamforming signal directed at the target device, wherein the phase shift stage performs phase shifting operations on the M electrical signals based on the position information of the target device and the temperature detection result of the amplification stage, and generates the M phase shift signals accordingly.

15. The radio frequency jammer as claimed in claim 14, wherein the M radio frequency signals are output via M power amplifiers of the amplification stage, and each power amplifier operates in the compression region between the linear region and the saturation region.

16. The radio frequency jammer as claimed in claim 14, wherein the processing circuitry is configured to generate the output signal based on a first input signal carrying information of the operating frequency band; the radio frequency jammer further comprises: an antenna for receiving an electromagnetic wave signal transmitted by the target device to generate a radio frequency signal; and a second radio frequency front-end circuitry coupled to the antenna and the processing circuitry for processing the radio frequency signal output by the antenna to generate the first input signal.

17. A radio frequency jammer, comprising: a processing circuit having a multi-channel interface for generating M output signals based on an operating frequency band of a target device and location information, wherein M is an integer greater than 1, and the M output signals have the same frequency within the operating frequency band, and the phase relationship between the M output signals is determined based on the location information; M first radio frequency front-end circuits, respectively coupled to the M channels of the multi-channel interface, for receiving the M output signals via the M channels to generate the M radio frequency signals; and an antenna array coupled to the M first radio frequency front-end circuits for receiving the M radio frequency signals to transmit a beamforming signal directed at the target device, wherein the phase relationship between the M output signals is determined based on the location information and temperature detection results of the M first radio frequency front-end circuits.

18. The radio frequency jammer as claimed in claim 17, wherein the M radio frequency signals are output via M power amplifiers of the M first radio frequency front-end circuits, and each power amplifier operates in a compression region between the linear region and the saturation region.

19. The radio frequency jammer as claimed in claim 17, wherein the antenna array comprises M antennas respectively coupled to the M first radio frequency front-end circuits; each first radio frequency front-end circuit comprises: a plurality of amplifier circuits having different operating frequency ranges, wherein each amplifier circuit is selectively coupled between a corresponding channel and a corresponding antenna.

20. The radio frequency jammer as claimed in claim 17, wherein the processing circuitry is configured to generate the M output signals based on a first input signal carrying information of the operating frequency band; the radio frequency jammer further comprises: an antenna for receiving an electromagnetic wave signal transmitted by the target device to generate a radio frequency signal; and a second radio frequency front-end circuitry coupled to the antenna and the processing circuitry for processing the radio frequency signal output by the antenna to generate the first input signal.

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