CN213403008U - Linear frequency modulation source transceiver module - Google Patents
Linear frequency modulation source transceiver module Download PDFInfo
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- CN213403008U CN213403008U CN202022771109.9U CN202022771109U CN213403008U CN 213403008 U CN213403008 U CN 213403008U CN 202022771109 U CN202022771109 U CN 202022771109U CN 213403008 U CN213403008 U CN 213403008U
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Abstract
The utility model provides a linear frequency modulation source transceiver module, including the circuit protective housing, arrange the frequency modulation transceiver circuit in the circuit protective housing and be located a plurality of interfaces of circuit protective housing both sides in, the interface includes network interface, power source and control interface, frequency modulation transceiver circuit includes digital processing unit, linear frequency modulation source transceiver unit, power source and the control unit, linear frequency modulation source transceiver unit includes transmitting circuit, receiving circuit and delay circuit, transmitting circuit includes the linear frequency modulation source that connects gradually, the frequency multiplier, merit divides ware and first RF amplifier, receiving unit includes the second RF amplifier, the mixer that connects gradually, IF amplifier and sampling circuit, digital signal processing unit connects linear frequency modulation unit's input respectively, sampling circuit's output and network interface, delay circuit connects transmitting circuit and receiving circuit respectively, the utility model discloses low-power consumption, small, it is with low costs.
Description
Technical Field
The utility model relates to a frequency modulation source technical field particularly, relates to a linear frequency modulation source transceiver module.
Background
The broadband linear frequency modulation signal source is widely applied to the fields of electronic measurement, traffic navigation, vehicle collision prevention, early warning detection, security check anti-terrorism frequency modulation radar, compression receivers, radar simulators, biomedicine and the like, and the main technologies for generating linear frequency modulation signals include an analog technology and a digital technology. The analog technology mainly utilizes the relatively large nonlinear relation between frequency sweep voltages, when the frequency modulation is carried out by adopting linear voltages, the frequency signal output by the VCO is actually nonlinear, and although the analog signal is intuitive and easy to realize, the confidentiality and the anti-interference performance of the analog signal are relatively poor. The digital linear frequency modulation source can effectively solve the contradiction between the action distance and the distance resolution of the linear frequency modulation signal.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a linear frequency modulation source transceiver module, its low power dissipation, it is small, simple structure, technology maturity, it is with low costs.
The embodiment of the utility model discloses a realize through following technical scheme:
the utility model provides a linear frequency modulation source transceiver module, includes the circuit protective housing, arranges in frequency modulation transceiver circuitry in the circuit protective housing and be located a plurality of interfaces of circuit protective housing both sides, frequency modulation transceiver circuitry includes digital signal processing unit and linear frequency modulation source transceiver unit, linear frequency modulation source transceiver unit includes transmitting circuit and receiving circuit, transmitting circuit is including the linear frequency modulation source, frequency multiplier, merit branch ware and the first RF amplifier that connect gradually, receiving circuit is including the second RF amplifier, mixer, IF amplifier and the sampling circuit that connect gradually, the input of linear frequency modulation source is connected digital signal processing unit, the output of sampling circuit is connected digital signal processing unit.
Preferably, the chirp source transceiver unit further includes a delay circuit, and the delay circuit is connected to the transmitting circuit and the receiving circuit, respectively.
Preferably, the interface includes a network connection port, a power interface and a control interface, and the digital signal processing unit is connected with the outside through the network connection port.
Preferably, the surface of the circuit protection shell further includes a radio frequency receiving antenna and a radio frequency transmitting antenna, the output end of the first RF amplifier is connected to the radio frequency transmitting antenna, and the input end of the second RF amplifier is connected to the radio frequency receiving antenna.
Preferably, the delay circuit includes a delay line, an input end of the delay line is connected to the output end of the power divider, and an output end of the delay line is connected to the input end of the mixer.
Preferably, the frequency modulation transceiver circuit further comprises a power supply unit, an input end of the power supply unit is connected to the power supply interface, and an output end of the power supply unit is connected to the digital signal processing unit and the chirp source transceiver unit.
Preferably, the frequency modulation transceiver circuit further comprises a control unit, the control unit is respectively connected with the linear frequency modulation source transceiver unit, the power supply unit and the control interface, and the control unit is implemented by using an FPGA.
The utility model discloses technical scheme has following advantage and beneficial effect at least:
the utility model changes the analog signal to be transmitted into the radio frequency signal through the connection of the digital signal processing unit and the linear frequency modulation source, and then changes the analog signal into the radio frequency signal which can be transmitted through the processing of the frequency multiplier, the power divider and the first RF amplifier and transmits the radio frequency signal through the radio frequency transmitting antenna; receiving radio frequency signals through a radio frequency receiving antenna, converting the radio frequency signals into digital signals through the processing of a second RF amplifier, a mixer, an IF amplifier and a sampling circuit, and converting the digital signals into analog signals through a digital signal processing unit to be transmitted to an external system; the frequency modulation source has the advantages of simple structure, small volume, low power consumption and low cost;
the utility model relates to a rationally, simple structure, the practicality is strong.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a block diagram of a linear frequency modulation source transceiver module according to embodiment 1 of the present invention;
fig. 2 is a block diagram of a linear frequency modulation source transceiver unit according to embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of this application is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific orientation, be constructed in a specific orientation and be operated is not to be construed as limiting the present invention.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1-2, a linear frequency modulation source transceiver module includes a circuit protection shell, a frequency modulation transceiver circuit disposed in the circuit protection shell, and a plurality of interfaces located on two sides of the circuit protection shell, where the frequency modulation transceiver circuit includes a digital signal processing unit and a chirp source transceiver unit, the chirp source transceiver unit includes a transmitter circuit and a receiver circuit, the transmitter circuit includes a chirp source, a frequency multiplier, a power divider and a first RF amplifier connected in sequence, the receiver circuit includes a second RF amplifier, a frequency mixer, an IF amplifier and a sampling circuit connected in sequence, an input end of the chirp source is connected to the digital signal processing unit, and an output end of the sampling circuit is connected to the digital signal processing unit.
The power divider is used for receiving the frequency modulation model, dividing the received frequency modulation model into two paths of frequency modulation signals with the same frequency, and transmitting the first path of frequency modulation signals to the first RF amplifier, wherein the first RF amplifier is a radio frequency amplifier and is used for amplifying the first path of frequency modulation signals after the power divider is power-divided.
The second RF amplifier is used for receiving an external frequency modulation signal entering the receiving circuit, the second RF amplifier is a high-gain low-noise amplifier, the mixer is used for mixing the received external frequency modulation signal with a second channel of frequency modulation signal distributed by the power divider to obtain an intermediate frequency signal, the IF amplifier is an intermediate frequency amplifier, the intermediate frequency amplifier can obtain high gain, the sampling circuit samples the frequency of the intermediate frequency signal to obtain a digital signal, and the digital signal processing unit obtains an analog signal from the input digital signal.
The chirp source transceiver unit also includes a delay circuit, which is connected to the transmitter circuit and the receiver circuit, respectively. The delay circuit is used for transmitting the second path of frequency modulation signal distributed by the power divider to the mixer.
The interface comprises a network connector, a power supply interface and a control interface, and the digital signal processing unit is connected with the outside through the network connector. The linear frequency modulation source transceiver module is charged through the power interface, and a worker debugs a program of the linear frequency modulation source transceiver module through the control interface. The network interface adopts Ethernet transmission.
The surface of the circuit protection shell further comprises a radio frequency receiving antenna and a radio frequency transmitting antenna, the output end of the first RF amplifier is connected with the radio frequency transmitting antenna, and the input end of the second RF amplifier is connected with the radio frequency receiving antenna. The linear frequency modulation source transceiver module receives radio frequency signals through the radio frequency receiving antenna, processes the radio frequency signals, converts the processed radio frequency signals into analog signals through the network interface and transmits the analog signals to an external system, and the linear frequency modulation source transceiver module receives the analog signals to be processed through the network interface, processes the analog signals and transmits the analog signals through the radio frequency transmitting antenna.
The delay circuit comprises a delay line, wherein the input end of the delay line is connected with the output end of the power divider, and the output end of the delay line is connected with the input end of the mixer. And the second channel of frequency modulation signal enters the frequency mixer through the delay circuit, and is a local oscillation signal.
The frequency modulation transceiver circuit also comprises a power supply unit, wherein the input end of the power supply unit is connected with the output end of the power supply interface power supply unit and is connected with the digital signal processing unit and the linear frequency modulation source transceiver unit.
The frequency modulation transceiving circuit further comprises a control unit, the control unit is respectively connected with the linear frequency modulation source transceiving unit, the power supply unit and the control interface, and the control unit is realized by adopting an FPGA.
The emission principle is as follows: the linear frequency modulation source transceiver module receives an analog signal transmitted by an external system through a network interface, the analog signal is converted into a digital signal through a digital signal processing unit, the digital signal is converted into a frequency modulation signal through a linear frequency modulation source, the frequency modulation signal is doubled in power through a frequency multiplier, the doubled frequency multiplier generates two paths of frequency modulation signals through a power divider, the first path of frequency modulation signal is amplified in power through a first RF amplifier and then transmitted through a radio frequency transmitting antenna, and the second path of frequency modulation signal is used as a local oscillation signal and is input into a frequency mixer of a receiving circuit through a delay line.
The receiving principle is as follows: the radio frequency signal enters a second RF amplifier through a radio frequency receiving antenna, the second RF amplifier performs frequency amplification on the received radio frequency signal and transmits the radio frequency signal to a mixer, the mixer performs frequency mixing processing on the received second channel of frequency modulation signal and the radio frequency signal processed by the second RF amplifier to obtain an intermediate frequency signal, the intermediate frequency signal enters a sampling circuit after being processed by the intermediate frequency amplifier, the sampling circuit performs frequency sampling on the intermediate frequency signal to obtain a digital signal, and the digital signal is converted into an analog signal through a digital signal processing unit and transmitted to an external system through a network interface.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The linear frequency modulation source transceiver module is characterized by comprising a circuit protection shell, a frequency modulation transceiver circuit arranged in the circuit protection shell and a plurality of interfaces positioned on two sides of the circuit protection shell, wherein the frequency modulation transceiver circuit comprises a digital signal processing unit and a linear frequency modulation source transceiver unit, the linear frequency modulation source transceiver unit comprises a transmitting circuit and a receiving circuit, the transmitting circuit comprises a linear frequency modulation source, a frequency multiplier, a power divider and a first RF amplifier which are sequentially connected, the receiving circuit comprises a second RF amplifier, a frequency mixer, an IF amplifier and a sampling circuit which are sequentially connected, the input end of the linear frequency modulation source is connected with the digital signal processing unit, and the output end of the sampling circuit is connected with the digital signal processing unit.
2. The chirp source transceiver module of claim 1, wherein the chirp source transceiver unit further comprises a delay circuit, the delay circuit being connected to the transmit circuit and the receive circuit, respectively.
3. The chirped source transceiver module according to claim 1, wherein the interface comprises a network interface, a power interface and a control interface, and the digital signal processing unit is connected to the outside through the network interface.
4. The chirped source transceiver module according to claim 1, wherein the surface of the circuit protection casing further comprises a radio frequency receiving antenna and a radio frequency transmitting antenna, wherein the output terminal of the first RF amplifier is connected to the radio frequency transmitting antenna, and the input terminal of the second RF amplifier is connected to the radio frequency receiving antenna.
5. The chirped source transceiver module according to claim 2, wherein the delay circuit comprises a delay line, an input of the delay line is connected to the output of the power divider, and an output of the delay line is connected to the input of the mixer.
6. The chirp source transceiver module of claim 3, wherein the chirp transceiver circuit further comprises a power supply unit, wherein an input of the power supply unit is connected to the power supply interface and an output of the power supply unit is connected to the digital signal processing unit and the chirp source transceiver unit.
7. The chirped source transceiver module according to claim 1, wherein the frequency modulation transceiver circuit further comprises a control unit, the control unit is connected to the chirped source transceiver unit, the power supply unit and the control interface, respectively, and the control unit is implemented by using an FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022771109.9U CN213403008U (en) | 2020-11-25 | 2020-11-25 | Linear frequency modulation source transceiver module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022771109.9U CN213403008U (en) | 2020-11-25 | 2020-11-25 | Linear frequency modulation source transceiver module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213403008U true CN213403008U (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022771109.9U Active CN213403008U (en) | 2020-11-25 | 2020-11-25 | Linear frequency modulation source transceiver module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213403008U (en) |
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2020
- 2020-11-25 CN CN202022771109.9U patent/CN213403008U/en active Active
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