Broadband multi-system beacon simulator radio frequency link

Abstract

The embodiment of the utility model provides a broadband multi-system beacon simulator radio frequency link, which relates to the technical field of radio frequency links and comprises a first frequency mixing circuit, a second frequency mixing circuit, a third frequency mixing circuit and an amplifying circuit. The input end of the first frequency mixing circuit is used for receiving an external input signal, and the output end of the first frequency mixing circuit is connected with the second frequency mixing circuit; and the second frequency mixing circuit, the third frequency mixing circuit and the amplifying circuit are connected in sequence. According to the technical scheme of the utility model, conversion, amplification and optimization from various modulation signals to radio frequency signals can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency links, in particular to a broadband multi-system beacon simulator radio frequency link. Background Art

[0002] With the increasing number of drones, unmanned aerial vehicles (UAVs), low-altitude communication and surveillance systems in the electronic countermeasures (ECM) of the low-altitude economy, and the introduction of a wider spectrum range with the fifth-generation mobile communication system (5G), including low-frequency bands, mid-frequency bands and high-frequency millimeter wave bands, in order to make full use of the characteristics of these different frequency bands, it is essential to support RF links with multiple signal input systems.

[0003] Modern communication RF systems need to support a variety of different types of signals in different frequency bands. Among them, the key transmitter RF link has the disadvantages of processing a small number of input signal types, limited adaptability scenarios, low power conversion efficiency, and complex and bulky overall RF equipment. Utility Model Content

[0004] The embodiment of the utility model provides a broadband multi-system beacon simulator radio frequency link to realize the conversion, amplification and optimization of multiple modulation signals to radio frequency signals.

[0005] Other features and advantages of the present invention will become apparent from the following detailed description or may be learned in part from the practice of the present invention.

[0006] According to a first aspect of an embodiment of the utility model, a broadband multi-system beacon simulator radio frequency link is provided, comprising: a first mixing circuit, a second mixing circuit, a third mixing circuit and an amplifying circuit;

[0007] The input end of the first frequency mixing circuit is used to receive an external input signal, and the output end is connected to the second frequency mixing circuit;

[0008] The second mixing circuit, the third mixing circuit and the amplifier circuit are connected in sequence.

[0009] In some embodiments of the present utility model, based on the above solution, the first frequency mixing circuit includes: a first frequency mixer and a first voltage-controlled oscillator;

[0010] The first input end of the first mixer is used to receive an external input signal, and the second input end is connected to the first voltage-controlled oscillator;

[0011] The output terminal of the first mixer is connected to the input terminal of the second mixer circuit.

[0012] In some embodiments of the present utility model, based on the above solution, the second frequency mixing circuit includes: a second mixer and a second voltage-controlled oscillator;

[0013] A first input terminal of the second mixer is connected to an output terminal of the first mixer, and a second input terminal is connected to the second voltage-controlled oscillator;

[0014] The output terminal of the second mixer is connected to the input terminal of the third mixer circuit.

[0015] In some embodiments of the present utility model, based on the above solution, the third frequency mixing circuit includes: a third frequency mixer and a third voltage-controlled oscillator;

[0016] The first input terminal of the third mixer is connected to the output terminal of the second mixer, and the second input terminal is connected to the third voltage-controlled oscillator;

[0017] The output terminal of the third mixer is connected to the input terminal of the amplifier circuit.

[0018] In some embodiments of the present utility model, based on the aforementioned solution, the amplification circuit includes: a low noise amplifier and an amplifier;

[0019] The input end of the low noise amplifier is connected to the output end of the third mixer, and the output end is connected to the input end of the amplifier;

[0020] The output end of the amplifier is used to output a radio frequency signal.

[0021] In some embodiments of the present utility model, based on the above scheme, the amplifying circuit further includes: a first attenuator, a second attenuator and a third attenuator;

[0022] The input end of the first attenuator is connected to the output end of the third mixer, and the output end is connected to the input end of the low noise amplifier;

[0023] The input end of the second attenuator is connected to the output end of the low noise amplifier, and the output end is connected to the input end of the amplifier;

[0024] The input end of the third attenuator is connected to the output end of the amplifier, and the output end is used to output a radio frequency signal.

[0025] In some embodiments of the present utility model, based on the above solution, a first low-pass filter is provided between the first frequency mixing circuit and the second frequency mixing circuit, the input end of the first low-pass filter is connected to the output end of the first frequency mixing circuit, and the output end of the first low-pass filter is connected to the input end of the second frequency mixing circuit;

[0026] A second low-pass filter is provided between the second frequency mixing circuit and the third frequency mixing circuit. The input end of the second low-pass filter is connected to the output end of the second frequency mixing circuit, and the output end of the second low-pass filter is connected to the input end of the third frequency mixing circuit.

[0027] The technical solution of the utility model can realize the conversion, amplification and optimization of various modulated signals into radio frequency signals, and the final output radio frequency signal is clean and the intensity is controllable. The technical solution of the utility model can be widely used in communication systems, radars, satellite communications and other fields.

[0028] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present utility model, and together with the specification, are used to explain the principles of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0030] Figure 1 A schematic structural diagram of a broadband multi-system beacon simulator radio frequency link according to an embodiment of the utility model is shown. DETAILED DESCRIPTION

[0031] The example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; on the contrary, these embodiments are provided so that the present invention will be more comprehensive and complete, and the concept of the example embodiments will be fully conveyed to those skilled in the art.

[0032] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present utility model. However, those skilled in the art will appreciate that the technical solution of the present utility model can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the present utility model.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those shown or described.

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Some embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0036] In order to solve the technical problems existing in the prior art, the embodiment of the utility model provides a broadband multi-system beacon simulator radio frequency link, including: a first mixing circuit, a second mixing circuit, a third mixing circuit and an amplifying circuit;

[0037] The input end of the first frequency mixing circuit is used to receive an external input signal, and the output end is connected to the second frequency mixing circuit;

[0038] The second mixing circuit, the third mixing circuit and the amplifier circuit are connected in sequence.

[0039] It can be understood that the external input signal refers to a variety of modulated signals.

[0040] The working principle of the radio frequency link provided in this embodiment is as follows:

[0041] The first mixing circuit performs a first mixing process on the input signal to obtain a first mixing signal, which is then transmitted to the second mixing circuit; the second mixing circuit performs a second mixing process on the first mixing signal to obtain a second mixing signal, which is then transmitted to the third mixing circuit for a third mixing process to obtain a third mixing signal; the third mixing circuit transmits the third mixing signal to the amplifier circuit for amplification to obtain a final adjusted RF signal and output it.

[0042] In some feasible embodiments, based on the above solution, the first frequency mixing circuit includes: a first frequency mixer and a first voltage-controlled oscillator;

[0043] The first input end of the first mixer is used to receive an external input signal, and the second input end is connected to the first voltage-controlled oscillator;

[0044] The output terminal of the first mixer is connected to the input terminal of the second mixer circuit.

[0045] It should be noted that a mixer is essentially a three-terminal device with two inputs and one output, and the output signal is equal to the product of the input signals. A mixer can generate a new signal of the sum and difference of two frequencies by multiplying two signals of different frequencies.

[0046] In this embodiment, the first mixer multiplies the external input signal with the signal generated by the first voltage-controlled oscillator to obtain a first mixed signal with a higher frequency, and outputs the first mixed signal to the second mixer circuit.

[0047] In some feasible embodiments, based on the above solution, the second frequency mixing circuit includes: a second frequency mixer and a second voltage-controlled oscillator;

[0048] A first input terminal of the second mixer is connected to an output terminal of the first mixer, and a second input terminal is connected to the second voltage-controlled oscillator;

[0049] The output terminal of the second mixer is connected to the input terminal of the third mixer circuit.

[0050] In this embodiment, the second mixer multiplies the first mixing signal by the signal generated by the second voltage-controlled oscillator to obtain a second mixing signal with a further increased frequency, and outputs the second mixing signal to the third mixing circuit.

[0051] In some feasible embodiments, based on the above solution, the third frequency mixing circuit includes: a third frequency mixer and a third voltage-controlled oscillator;

[0052] The first input terminal of the third mixer is connected to the output terminal of the second mixer, and the second input terminal is connected to the third voltage-controlled oscillator;

[0053] The output terminal of the third mixer is connected to the input terminal of the amplifier circuit.

[0054] In this embodiment, the third mixer multiplies the second mixing signal with the signal generated by the third voltage-controlled oscillator to obtain a third mixing signal of a desired frequency, and outputs the third mixing signal to the amplifying circuit.

[0055] In some feasible embodiments, based on the aforementioned solution, the amplification circuit includes: a low noise amplifier and an amplifier;

[0056] The input end of the low noise amplifier is connected to the output end of the third mixer, and the output end is connected to the input end of the amplifier;

[0057] The output end of the amplifier is used to output a radio frequency signal.

[0058] It can be understood that the amplifier circuit can amplify the third mixed signal to enhance the signal strength to meet the needs of subsequent processing or transmission.

[0059] In some feasible embodiments, based on the above solution, the amplifying circuit further includes: a first attenuator, a second attenuator and a third attenuator;

[0060] The input end of the first attenuator is connected to the output end of the third mixer, and the output end is connected to the input end of the low noise amplifier;

[0061] The input end of the second attenuator is connected to the output end of the low noise amplifier, and the output end is connected to the input end of the amplifier;

[0062] The input end of the third attenuator is connected to the output end of the amplifier, and the output end is used to output a radio frequency signal.

[0063] It can be understood that the attenuator is used to adjust the amplitude of the signal and control the strength of the signal to meet the requirements of the subsequent circuit.

[0064] In this embodiment, the first attenuator is arranged between the third mixer and the low noise amplifier, and is used to attenuate the third mixed signal output by the third mixer, and transmit the attenuated third mixed signal to the low noise amplifier.

[0065] The second attenuator is arranged between the low noise amplifier and the amplifier, and is used for performing attenuation processing on the signal output by the low noise amplifier, and transmitting the attenuated signal to the amplifier.

[0066] The third attenuator is arranged at the output end of the amplifier, and is used for attenuating the signal output by the amplifier.

[0067] In some feasible embodiments, based on the above solution, a first low-pass filter is provided between the first frequency mixing circuit and the second frequency mixing circuit, an input end of the first low-pass filter is connected to an output end of the first frequency mixing circuit, and an output end of the first low-pass filter is connected to an input end of the second frequency mixing circuit;

[0068] A second low-pass filter is provided between the second frequency mixing circuit and the third frequency mixing circuit. The input end of the second low-pass filter is connected to the output end of the second frequency mixing circuit, and the output end of the second low-pass filter is connected to the input end of the third frequency mixing circuit.

[0069] It should be noted that the low-pass filter is used to filter out unwanted high-frequency components, ensuring that only the required frequency components pass through, reducing noise and other interference.

[0070] In this embodiment, the first low-pass filter is arranged between the first mixing circuit and the second mixing circuit, and is used to filter the first mixing signal and transmit the filtered first mixing signal to the second mixing circuit.

[0071] The second low-pass filter is arranged between the second mixing circuit and the third mixing circuit, and is used for filtering the second mixing signal and transmitting the filtered second mixing signal to the third mixing circuit.

[0072] For example, see Figure 1 , shows a schematic structural diagram of a broadband multi-system beacon simulator radio frequency link according to an embodiment of the utility model.

[0073] like Figure 1 As shown, the RF link includes a first mixer Mixer1, a first oscillator VCO1, a first low-pass filter LPF1, a second mixer Mixer2, a second oscillator VCO2, a second low-pass filter LPF2, a third mixer Mixer3, a third oscillator VCO3, a first attenuator ATT1, a low-noise amplifier LNA, a second attenuator ATT2, an amplifier PA and a third attenuator ATT3.

[0074] The first input terminal of the first mixer Mixer1 receives an external input signal IF IN, the second input end is connected to the first oscillator VCO1, the output end is connected to the first low-pass filter LPF1, the first mixer Mixer1 multiplies the input signal IFIN with the signal LO1 generated by the first oscillator VCO1 to obtain a first mixed signal, and transmits the first mixed signal to the first low-pass filter LPF1 for filtering; the output end of the first low-pass filter LPF1 is connected to the first input end of the second mixer Mixer2, the second input end of the second mixer Mixer2 is connected to the second oscillator VCO2, the output end of the second mixer Mixer2 is connected to the second low-pass filter LPF2, the second mixer Mixer2 multiplies the first mixed signal after filtering by the first low-pass filter LPF1 with the signal LO2 generated by the second oscillator VCO2 to obtain a second mixed signal, and transmits the second mixed signal to the second low-pass filter LPF2 for filtering; the output end of the second low-pass filter LPF2 is connected to the first input end of the third mixer Mixer3, the second input end of the third mixer Mixer3 is connected to the third oscillator VCO3, and the output end is connected to the first attenuator ATT1 is connected, the third mixer Mixer3 multiplies the second mixed signal after filtering by the second low-pass filter LPF2 with the signal LO3 generated by the third oscillator VCO3 to obtain a third mixed signal, and transmits the third mixed signal to the first attenuator ATT1 for the first attenuation process; the output end of the first attenuator ATT1 is connected to the low noise amplifier LNA, and the third mixed signal after the first attenuation is transmitted to the low noise amplifier LNA for the first amplification process; the output end of the low noise amplifier LNA is connected to the second attenuator ATT2, and the third mixed signal after the first amplification process is transmitted to the second attenuator ATT2 for the second attenuation process; the output end of the second attenuator ATT2 is connected to the amplifier PA, and the third mixed signal after the second attenuation process is transmitted to the amplifier PA for the second amplification process; the output end of the amplifier PA is connected to the third attenuator ATT3, and the third mixed signal after the second amplification process is transmitted to the third attenuator ATT3 for the third attenuation process, and the third mixed signal after the third attenuation process is output as the final output signal RF OUT to the outside of the RF link.

[0075] In summary, the broadband multi-system beacon simulator RF link provided by the utility model can receive, convert and process various modulated RF signals, convert them from one frequency to another, and filter out unnecessary frequency components, and finally output a pure RF signal with controllable intensity. The RF link provided by the utility model can be widely used in communication systems, radars, satellite communications and other fields for signal reception, processing and transmission.

[0076] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the embodiments disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present invention. It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A broadband multi-system beacon simulator radio frequency link, characterized in that: include: A first mixing circuit, a second mixing circuit, a third mixing circuit and an amplifier circuit; The input end of the first frequency mixing circuit is used to receive an external input signal, and the output end is connected to the second frequency mixing circuit; The second mixing circuit, the third mixing circuit and the amplifier circuit are connected in sequence.

2. The radio frequency link according to claim 1, characterized in that: The first frequency mixing circuit comprises: a first frequency mixer and a first voltage-controlled oscillator; The first input end of the first mixer is used to receive an external input signal, and the second input end is connected to the first voltage-controlled oscillator; The output terminal of the first mixer is connected to the input terminal of the second mixer circuit.

3. The radio frequency link according to claim 2, characterized in that: The second frequency mixing circuit comprises: a second frequency mixer and a second voltage-controlled oscillator; A first input terminal of the second mixer is connected to an output terminal of the first mixer, and a second input terminal is connected to the second voltage-controlled oscillator; The output terminal of the second mixer is connected to the input terminal of the third mixer circuit.

4. The radio frequency link according to claim 3, characterized in that: The third frequency mixing circuit comprises: a third frequency mixer and a third voltage-controlled oscillator; The first input terminal of the third mixer is connected to the output terminal of the second mixer, and the second input terminal is connected to the third voltage-controlled oscillator; The output terminal of the third mixer is connected to the input terminal of the amplifier circuit.

5. The radio frequency link according to claim 4, characterized in that: The amplifying circuit comprises: a low noise amplifier and an amplifier; The input end of the low noise amplifier is connected to the output end of the third mixer, and the output end is connected to the input end of the amplifier; The output end of the amplifier is used to output a radio frequency signal.

6. The radio frequency link according to claim 5, characterized in that: The amplifying circuit further comprises: a first attenuator, a second attenuator and a third attenuator; The input end of the first attenuator is connected to the output end of the third mixer, and the output end is connected to the input end of the low noise amplifier; The input end of the second attenuator is connected to the output end of the low noise amplifier, and the output end is connected to the input end of the amplifier; The input end of the third attenuator is connected to the output end of the amplifier, and the output end is used to output a radio frequency signal.

7. The radio frequency link according to any one of claims 1 to 6, characterized in that: A first low-pass filter is provided between the first frequency mixing circuit and the second frequency mixing circuit, an input end of the first low-pass filter is connected to an output end of the first frequency mixing circuit, and an output end of the first low-pass filter is connected to an input end of the second frequency mixing circuit; A second low-pass filter is provided between the second frequency mixing circuit and the third frequency mixing circuit. The input end of the second low-pass filter is connected to the output end of the second frequency mixing circuit, and the output end of the second low-pass filter is connected to the input end of the third frequency mixing circuit.

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