CN210986106U

CN210986106U - Baseband interference signal generating circuit

Info

Publication number: CN210986106U
Application number: CN201922356583.2U
Authority: CN
Inventors: 杨涛; 蒋波; 叶盈刚
Original assignee: Chengdu Zhongzhitiancheng Technology Co ltd
Current assignee: Chengdu Zhongzhitiancheng Technology Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-07-10
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a baseband interference signal generating circuit, a signal generating module, a coherent clock source module, a signal processing module, a transmitting module, an upper computer and a power supply module; the signal generation module is respectively connected with the upper computer, the coherent clock source module and the transmitting module and is used for receiving and transmitting signals; the coherent clock source module is respectively connected with the signal generating module and the transmitting module and is used for transmitting signals and controlling homologous coherent of interference signals in the transmitting module and switching of internal and external reference clocks; the signal processing module is respectively connected with the upper computer and the transmitting module and is used for converting the input signal into an analog baseband signal; the transmitting module is used for converting the intermediate frequency signal into a radio frequency signal and outputting the radio frequency signal; the upper computer is used for transmitting simulation baseband file information; the power supply module is used for supplying power; the utility model discloses make the interfering signal of a plurality of different grade types of emission module output simultaneously, can effectively disturb and shield the signal of a plurality of different grade types.

Description

Baseband interference signal generating circuit

Technical Field

The utility model belongs to the technical field of the interfering signal and specifically relates to a baseband interfering signal generating circuit.

Background

With the development of science and technology, the research of the complex interference suppression source technology is increasingly responded by the nation, and the technology has great significance in military and civil use; with the development, the situations of military radar detection and remote control crime through a mobile terminal or illegal communication through mobile phone communication in life are increasing, and the interference signals are required to interfere the communication of the equipment in order to prevent the situations, but the types of the signals emitted by different types of equipment are various, and the interference signal generating device is required to flexibly process the signals; therefore, the generating circuit capable of simultaneously sending various interference signals can effectively ensure the interference effect.

In the prior art, most interference signal generating devices can only generate one path or two paths of interference signals, the types of the transmitted interference signals are generally 2-5, and flexible processing cannot be performed under the condition of more signal types.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in view of the above problems, a baseband interference signal generating circuit is provided.

The utility model adopts the technical scheme as follows:

a baseband interference signal generating circuit comprising: the device comprises a signal generation module, a coherent clock source module, a signal processing module, a transmitting module, an upper computer and a power supply module; the signal generation module is respectively connected with the upper computer, the coherent clock source module and the transmitting module and is used for generating and transmitting interference signals; the coherent clock source module is respectively connected with the signal generating module and the transmitting module and is used for transmitting signals and controlling homologous coherent of interference signals in the transmitting module and switching of internal and external reference clocks; the signal processing module is respectively connected with the upper computer and the transmitting module and is used for converting the input signal into an analog baseband signal; the transmitting module is used for converting the intermediate frequency signal into a radio frequency signal and outputting the radio frequency signal; the upper computer is used for transmitting simulation baseband file information; the power module is used for supplying power.

Further, the signal generation module is configured to receive a signal subjected to instruction analysis or simulation baseband file data sent by an upper computer, and generate an interference signal according to the received information.

Further, the signal processing module includes: the device comprises an instruction analysis module, a signal format generation module, a data processing module and a signal conversion module; the instruction analysis module is used for converting an input instruction into an internal monitoring instruction; the signal format generating module is used for generating a modulation signal format; the data processing module is used for grouping the received signals; the signal conversion module is used for converting the signal into an analog baseband signal; the instruction analysis module, the signal format generation module, the data processing module and the signal conversion module are connected in sequence.

Further, the signal grouping divides the signals into groups.

Further, the transmitting module includes: the device comprises an up-conversion unit, a frequency synthesis unit and a monitoring unit; the up-conversion unit is used for converting signal frequency and adjusting output signal level; the frequency synthesis unit is used for providing local oscillation signals; the monitoring unit is used for monitoring the circuit state.

Further, the number of the transmitting modules is several.

Further, the power module is used for converting alternating current into direct current for power supply.

Further, the upper computer is a computer or a mobile phone.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses a signal generation module, a plurality of emission module and with the signal processing module of incoming signal grouping for multichannel signal, can produce and export 4 way interference signal to can generate the interference signal of multiple different grade type simultaneously through signal generation module, can reach 9 kinds of interference signal, can effectively disturb and shield the signal of a plurality of different grade types.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a block diagram of a baseband interference signal generating circuit.

Fig. 2 is a block diagram of a signal processing module.

Fig. 3 is a structural diagram of a transmission module.

Wherein, 1-an upper computer; 2-a signal generation module; 3-a signal processing module; 4-coherent clock source module; 5-a transmitting module; 6-a power supply module; 31-an instruction parsing module; 32-a signal format generation module; 33-a data processing module; 34-a signal conversion module; 51-an up-conversion unit; 52-frequency synthesis unit; 53-monitoring unit.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

Example 1

A baseband interference signal generating circuit, as shown in fig. 1, comprising: the device comprises a signal generation module 2, a coherent clock source module 4, a signal processing module 3, a transmitting module 5, an upper computer 1 and a power supply module 6; the signal generation module 2 is respectively connected with the upper computer 1, the coherent clock source module 4 and the transmitting module 5, the coherent clock source module 4 is respectively connected with the signal generation module 2 and the transmitting module 5, and the signal processing module 3 is respectively connected with the upper computer 1 and the transmitting module 5.

The signal generating module 2 is used for generating and transmitting interference signals, and the signal generating module 2 receives instructions of the upper computer 1 or user simulation baseband file signals through communication interfaces such as USB, L AN and COM, generates interference signals according to the received information, and sends the generated interference signals to the signal processing module 3 for processing.

The signal processing module 3 is used for converting the input signal into an analog baseband signal; as shown in fig. 2, the signal processing module 3 includes: an instruction analysis module 31, a signal format generation module 32, a data processing module 33 and a signal conversion module 34; the instruction analysis module 31 is configured to convert an input instruction into an internal monitoring instruction, analyze the internal monitoring instruction, and send an analyzed signal to the signal format generation module 32; the signal format generating module 32 is configured to generate a modulation signal format, that is, a modulation signal format corresponding to the instruction is generated according to the received analyzed instruction signal, and then the signal after format conversion is sent to the data processing module 33; the data processing module 33 is configured to group the received signals, and transmit the grouped signals to the signal conversion module 34, where the grouping may divide the signals into a plurality of groups, in this embodiment, the signals are preferably divided into 4 groups; the signal conversion module 34 is configured to convert the signal into an analog baseband signal, that is, after the grouped signal enters the signal conversion module 34, the signal conversion module 34 performs signal source, channel coding, digital modulation and DA conversion on the received signal to form 4 paths of analog baseband signals with different signal systems and modulation modes, and then transmits the multiple paths of analog baseband signals to the transmitting module 5; the instruction parsing module 31, the signal format generating module 32, the data processing module 33 and the signal converting module 34 are connected in sequence.

The coherent clock source module 4 is used for transmitting signals and controlling the homologous coherence of interference signals in the transmitting module 5 and switching between internal and external reference clocks, that is, is used for synchronizing multiple signals in the transmitting module 5 so that the signals can be output simultaneously.

The transmitting module 5 is used for converting the intermediate frequency signal into a radio frequency signal and outputting the radio frequency signal; as shown in fig. 3, the transmitting module 5 includes: an up-conversion unit 51, a frequency synthesis unit 52 and a monitoring unit 53; the frequency synthesizer unit is configured to provide a local oscillator signal, where the local oscillator signal is configured to convert a received signal into an intermediate frequency signal, and transmit the intermediate frequency signal to the up-conversion unit 51; the up-conversion unit 51 is used for converting signal frequency and adjusting output signal level, in this embodiment, after receiving the signal sent by the frequency synthesis unit 52, the up-conversion unit 51 mixes the received local oscillator signal from the frequency synthesis unit 52 with the analog baseband signal in the signal generation module 2 to obtain an intermediate frequency signal and a radio frequency signal, and then performs on-off filtering, amplification, automatic level control and attenuation control on the obtained signal, and converts the obtained signal into a radio frequency signal to output; the monitoring unit 53 is used for monitoring the circuit state, and is mainly used for monitoring the temperature of the transmitting module 5, so as to prevent the output signal from being unstable due to temperature change.

The upper computer 1 is used for transmitting simulation baseband file information, and the upper computer 1 can transmit instruction information or simulation baseband file information to the signal processing module 3; in this embodiment, the upper computer 1 may be a computer.

The power module 6 is used for supplying power, in this embodiment, the power module 6 mainly includes AC/DC, DC/DC, L DO, and circuits such as overvoltage, overcurrent protection, EMI filter, and converts 220V 50Hz AC input power into pure DC operating voltages such as +24V, +12V, + 5V, +3.3V, +2.5V and +1.25V required for module operation, so as to ensure that each functional module of the device supplies power normally.

In this embodiment, the number of the transmitting modules 5 is several, preferably, 4 transmitting modules 5 are adopted, and each transmitting module 5 can transmit different types of interference signals; in practical use, a user instruction (signal format, modulation type, modulation parameter, output frequency, output power and the like) from the upper computer 1 is analyzed in the device through an instruction to form an internal monitoring instruction, a modulation signal format (internal baseband signal generation) is generated or simulation baseband file data (data format is temporarily determined as IQ data flow) from the upper computer 1 is received, the formed signal format files are regrouped to form independent data flows corresponding to 4 paths of interference signals, the independent data flows are respectively input into 4 paths of channels, 4 paths of analog baseband signals with different signal systems and modulation modes are formed through information source, channel coding, modulation and DA conversion and are respectively output into 4 paths of radio frequency conversion and transmission channels, and different signal formats, different modulation modes, different signal bandwidths and the like are finally output, Complex signal interference sources of different signal frequencies and different transmit powers.

The utility model discloses a plurality of emission module 5 and with input signal grouping for the signal processing module 3 of multichannel signal, make emission module 5 can export the interfering signal of a plurality of different grade types simultaneously to 9 kinds of interfering signals are exported, can effectively disturb or shield the signal of a plurality of different grade types, for example SSK, QPSK, ASK, PSK, BPSK, frequency modulation pulse, frequency modulation noise, frequency sweep, gaussian white noise etc..

The present invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.

Claims

1. A baseband interference signal generating circuit, comprising: the device comprises a signal generation module (2), a coherent clock source module (4), a signal processing module (3), an emission module (5), an upper computer (1) and a power supply module (6); the signal generation module (2) is respectively connected with the upper computer (1), the coherent clock source module (4) and the transmitting module (5) and is used for generating and transmitting interference signals; the coherent clock source module (4) is respectively connected with the signal generating module (2) and the transmitting module (5) and is used for transmitting signals and controlling homologous coherent of interference signals in the transmitting module (5) and switching of internal and external reference clocks; the signal processing module (3) is respectively connected with the upper computer (1) and the transmitting module (5) and is used for converting input signals into analog baseband signals; the transmitting module (5) is used for converting the intermediate frequency signal into a radio frequency signal and outputting the radio frequency signal; the upper computer (1) is used for transmitting simulation baseband file information; the power supply module (6) is used for supplying power; the signal processing module (3) comprises: the device comprises an instruction analysis module (31), a signal format generation module (32), a data processing module (33) and a signal conversion module (34); the instruction analysis module (31) is used for converting an input instruction into an internal monitoring instruction; a signal format generating module (32) for generating a modulated signal format; the data processing module (33) is used for grouping the received signals; the signal conversion module (34) is used for converting the signal into an analog baseband signal; the instruction analysis module (31), the signal format generation module (32), the data processing module (33) and the signal conversion module (34) are connected in sequence.

2. The baseband interference signal generating circuit according to claim 1, wherein the signal generating module (2) is configured to receive a signal subjected to instruction parsing or simulation baseband file data sent by the upper computer (1), and generate the interference signal according to the received information.

3. The baseband interference signal generating circuit of claim 1, wherein said signal grouping divides the signal into groups.

4. The baseband interference signal generating circuit according to claim 1, wherein the transmitting module (5) comprises: an up-conversion unit (51), a frequency synthesis unit (52) and a monitoring unit (53); the up-conversion unit (51) is used for converting signal frequency and adjusting output signal level; the frequency synthesis unit is used for providing local oscillation signals; the monitoring unit (53) is used for monitoring the circuit state.

5. The baseband interference signal generating circuit according to claim 1, characterized in that said transmitting modules (5) are several in number.

6. The baseband interference signal generating circuit according to claim 1, wherein said power supply module (6) is configured to convert an alternating current into a direct current for supplying power.

7. The baseband interference signal generating circuit according to claim 1, wherein the upper computer (1) is a computer.