Detection power component

Abstract

The utility model relates to the technical field of signal power detection, in particular to a detection power component. Comprising a radio frequency input end used for being connected with external equipment; the power divider is used for receiving a radio frequency input signal and dividing the signal power of a radio frequency input end into a signal end to be synthesized and a signal end to be detected; the directional coupler comprises a microstrip edge coupling line, is connected with a to-be-detected signal end and is used for carrying out coupling separation on the to-be-detected signal to form a coupling output end; the detection circuit is connected with the coupling output end, is used for performing power detection on a signal output by the coupling output end, and is connected with the detection output end; and the synthesizer is used for synthesizing the signals output by the to-be-synthesized signal end into one path and is connected with the radio frequency output end. Through the design of an integrated structure and the optimization of a broadband range detection circuit, the problem that the detection range is expanded while the power is measured is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to signal power detection technical field especially is related to a detection wave power division subassembly. BACKGROUND

[0002] The power divider is a kind of device that one input signal is divided into two or more output equal or unequal energy, or multiple signal energy is synthesized into one output, at this time, it also becomes a synthesizer.

[0003] The traditional power distribution and detection system is mostly designed in separated mode.On the one hand, the separated power divider usually realizes power distribution of signal by microstrip line or coaxial structure, but its function is limited to single branch, and cannot provide more support for subsequent detection and other complex processing.On the other hand, the independent detector needs to be additionally configured with peak detection circuit, and the power of branch signal is measured by external connection.This separated architecture brings the following problems: first, the branch and detection functions are realized by independent modules, and the signal loss is significantly increased in the transmission process, which affects the accuracy of the signal.Secondly, in the detection range, the detection range of the traditional detection circuit is limited.

[0004] Therefore, it is necessary to design an integrated detection power division subassembly, which solves the problem of power measurement and expands the detection range by optimizing the integrated structure design and wideband range detection circuit. UTILITY MODEL CONTENTS

[0005] In order to solve the problem of power measurement and expand the detection range, the utility model provides a detection power division subassembly.

[0006] The utility model provides a detection power division subassembly, which comprises

[0007] The radio frequency input end is used for connecting with external equipment;

[0008] The power divider is used for receiving radio frequency input signal, and the signal of radio frequency input end is power divided into to-be-synthesized signal end and to-be-detected signal end;

[0009] The directional coupler includes microstrip edge coupling line, and is connected with to-be-detected signal end, is used for coupling separation to to-be-detected signal, forms coupling output end;

[0010] The detection circuit is connected with the coupling output end, is used for power detection to the signal output of coupling output end, and is connected with detection output end;

[0011] The synthesizer is used for synthesizing the signal output of to-be-synthesized signal end into one way, and is connected with radio frequency output end.

[0012] Further, the radio frequency input end and the radio frequency output end are pin interfaces, and the detection output end is an SSMB-JFD interface.

[0013] Further, the detection power division component is a laminated structure, and the detection power division component comprises a top layer, a ground plane layer, a power supply layer and a bottom layer, the power divider, the directional coupler and the combiner are arranged on the top layer, the detection circuit and the detection output end are arranged on the bottom layer, and the ground plane layer is a copper layer.

[0014] Further, a metal shielding cover is arranged between the top layer and the bottom layer.

[0015] Further, the detection circuit comprises a MOS tube one and a MOS tube two, the gate of the MOS tube one is connected with the coupling output end, the gate of the MOS tube two is connected with a reference voltage signal, the drain of the MOS tube one is connected with an analog-to-digital converter through a resistor one, the drain of the MOS tube two is connected with the analog-to-digital converter through a resistor two, the output end of the analog-to-digital converter is connected with a microprocessor, a detection diode connected with the ground is arranged between the resistor two and the analog-to-digital converter, and the sources of the MOS tube one and the MOS tube two are connected with the ground through a current mirror.

[0016] Further, an adjusting circuit is arranged between the gate and the drain of the MOS tube one, and the adjusting circuit comprises an adjusting resistor one and an adjusting resistor two connected in parallel, the adjusting resistor one is connected with a switch one in series, and the adjusting resistor two is connected with a switch two in series.

[0017] Further, a digital-to-analog converter is connected between the adjusting circuit and the microprocessor, and the digital-to-analog converter is used for receiving a digital signal of the microprocessor and sending an analog signal to the switch one and the switch two.

[0018] Further, the detection power division component comprises a shell, and the shell is made of an aluminum alloy.

[0019] Further, the shell comprises a base and a cover plate, and the cover plate is connected with the base through screws.

[0020] Further, two radio frequency input ends are arranged, two detection output ends are arranged, and one radio frequency output end is arranged.

[0021] In conclusion, the utility model has the beneficial technical effects as follows:

[0022] 1.The utility model provides a kind of wave detection power division assembly, and power divider, directional coupler, wave detection circuit and synthesizer are integrated in one component, shorten signal transmission path, significantly reduce the loss of signal in transmission process.Compared to the traditional separate design needs multiple independent modules to occupy larger space, the laminated structure design of the utility model reasonably arranges each functional module in different levels such as top layer, bottom layer, greatly reduce the overall volume of component.

[0023] 2.The wave detection circuit of the utility model adopts MOS tube, adjusting circuit to adapt to more extensive frequency range signal detection.Through microprocessor control digital-analog converter, and then adjust the switch in adjusting circuit, change the parameter of wave detection circuit, so that wave detection circuit can effectively detect the signal of different frequency, expand detection range.Adjusting circuit can adjust switch state through digital-analog converter according to the instruction of microprocessor, change the working parameter of wave detection circuit, to adapt to the signal detection demand of different frequency and different intensity.

[0024] 3.The utility model adopts soldering needle interface for radio frequency input end and radio frequency output end, soldering needle interface has the characteristics of firm connection and reliable contact, is suitable for the transmission of radio frequency signal, and wave detection output end adopts SSMB-JFD interface:SSMB-JFD interface has the advantages of small size and easy plugging, for wave detection output signal, it is usually necessary to frequently connect and disconnect with external signal analysis equipment to carry out signal monitoring and analysis, and interface design facilitates the use of operating personnel, improves work efficiency. DRAWINGS

[0025] Figure 1 It is a structure schematic view of the wave detection power division assembly of the utility model embodiment.

[0026] Figure 2 It is another structure schematic view of the wave detection power division assembly of the utility model embodiment.

[0027] Figure 3 It is a structure schematic view of the power divider of the utility model embodiment.

[0028] Figure 4 It is a structure schematic view of the synthesizer of the utility model embodiment.

[0029] Figure 5 It is a circuit diagram of the wave detection circuit of the utility model embodiment.

[0030] The components are as follows: 1. RF input terminal; 2. Power divider; 3. Directional coupler; 4. Detector circuit; 5. Synthesizer; 6. RF output terminal; 7. Detector output terminal; 8. Top layer; 9. Ground plane layer; 10. Power layer; 11. Bottom layer; 12. Metal shield; 13. Housing; 14. Base; 15. Cover plate; 16. MOSFET 1; 17. MOSFET 2; 18. Resistor 1; 19. Resistor 2; 20. Analog-to-digital converter; 21. Microprocessor; 22. Detector diode; 23. Current mirror; 24. Adjustable resistor 1; 25. Adjustable resistor 2; 26. Switch 1; 27. Switch 2; 28. Digital-to-analog converter. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Example 1

[0033] Reference Figure 1 The present invention provides a detector power divider assembly, comprising:

[0034] RF input terminal 1 is used for connecting to external devices;

[0035] Reference Figure 3 Power divider 2 is used to receive the radio frequency input signal and divide the signal at the radio frequency input terminal 1 into the signal to be synthesized terminal and the signal to be detected terminal;

[0036] The directional coupler 3 includes a microstrip edge coupling line, which is connected to the end of the signal to be detected and is used to couple and separate the signal to be detected to form a coupled output end.

[0037] The detection circuit 4 is connected to the coupling output terminal and is used to perform power detection on the signal output from the coupling output terminal. It is also connected to the detection output terminal 7.

[0038] Reference Figure 4 Synthesizer 5 is used to combine the signals output from the signal to be synthesized into one channel and connect it to the radio frequency output terminal 6.

[0039] The RF input terminal 1 and RF output terminal 6 are solder pin interfaces, and the detector output terminal 7 is an SSMB-JFD interface.

[0040] Power divider 2 adopts a Wilkinson power divider 2 structure, including isolation resistors and a microstrip edge coupling line of directional coupler 3, the length of which is one-quarter of the signal wavelength. When the signal to be detected is transmitted to directional coupler 3, the microstrip edge coupling line couples part of the signal energy to the coupling output terminal according to the principle of electromagnetic induction. The signal power output at the coupling output terminal is 10% of the power of the signal to be detected, and maintains a good phase relationship with the signal to be detected, so that the subsequent detection circuit 4 can perform accurate power detection.

[0041] The wave detection power division assembly is a laminated structure, and the wave detection power division assembly includes a top layer 8, a ground plane layer 9, a power supply layer 10, and a bottom layer 11. The power divider 2, the directional coupler 3, and the combiner 5 are arranged on the top layer 8. The wave detection circuit 4 and the wave detection output end 7 are arranged on the bottom layer 11. The ground plane layer 9 is a copper layer.

[0042] A metal shielding cover 12 is arranged between the top layer 8 and the bottom layer 11.

[0043] With reference to Figure 2 , the assembly adopts a laminated structure. The power divider 2, the directional coupler 3, and the combiner 5 on the top layer 8 are manufactured on the same layer by a high-precision printed circuit board (PCB) process. The copper layer of the ground plane layer 9 has a thickness of 35 μm, which can effectively shield electromagnetic interference between the circuit on the top layer 8 and the circuit on the bottom layer 11. The power supply layer 10 provides stable power supply for each circuit module, ensuring the normal operation of each circuit module. The wave detection circuit 4 and the wave detection output end 7 on the bottom layer 11 are also manufactured by the PCB process. The metal shielding cover 12 arranged between the top layer 8 and the bottom layer 11 is made of a metal material with high magnetic permeability, such as permalloy, and has a thickness of 1 mm. It can effectively block external electromagnetic interference from entering the interior of the assembly and prevent electromagnetic interference generated by the internal circuit of the assembly from leaking to the outside, ensuring the stable operation of the assembly in a complex electromagnetic environment.

[0044] With reference to Figure 5 , the wave detection circuit 4 includes MOS tube one 16 and MOS tube two 17. The gate of the MOS tube one 16 is connected to the coupling output end. The gate of the MOS tube two 17 is connected to a reference voltage signal. The drain and source of the MOS tube one 16 are connected to an analog-to-digital converter 20 through a resistor one 18. The drain and source of the MOS tube two 17 are connected to the analog-to-digital converter 20 through a resistor two 19. The output end of the analog-to-digital converter 20 is connected to a microprocessor 21. A wave detection diode 22 connected to the ground is arranged between the resistor two 19 and the analog-to-digital converter 20. The source of the MOS tube one 16 and the source of the MOS tube two 17 are connected to the ground through a current mirror 23.

[0045] An adjusting circuit is arranged between the gate and the drain of the MOS tube one 16. The adjusting circuit includes an adjusting resistor one 2418 and an adjusting resistor two 2519 connected in parallel. The adjusting resistor one 2418 is connected in series with a switch one 26. The adjusting resistor two 2519 is connected in series with a switch two 27.

[0046] A digital-to-analog converter 28 is connected between the adjusting circuit and the microprocessor 21. The digital-to-analog converter 28 is used to receive a digital signal of the microprocessor 21 and send an analog signal to the switch one 26 and the switch two 27.

[0047] The signal output from the coupling output terminal is connected to the detector circuit 4, and the gate of MOSFET 1 receives the coupled output signal. The gate of MOSFET 2 is connected to a stable reference voltage signal, which is provided by a high-precision voltage source inside the base station, and its voltage value is 1V. MOSFET 1 and MOSFET 2 are the same type of enhancement-mode MOSFET, and their drain current has a non-linear relationship with the gate voltage. Through the current mirror circuit 23, the sources of MOSFET 1 and MOSFET 2 are grounded, so that their source currents are consistent. Resistors 18 and 19 are both 1kΩ and are used to convert the drain current of the MOSFETs into a voltage signal. The detector diode is a low-barrier Schottky diode, which has fast switching characteristics and low forward conduction voltage, and can effectively rectify the signal. The analog-to-digital converter 20 converts the analog voltage signal into a digital signal and transmits it to the microprocessor 21 for analysis and processing. The regulating resistor 24 in the regulating circuit has a resistance of 500Ω, and the regulating resistor 25 has a resistance of 1000Ω. Switches 26 and 27 are high-speed electronic switches with a response time of less than 1 ns. When the microprocessor 21 determines that the sensitivity of the detector circuit 4 needs to be adjusted based on parameters such as the detected signal frequency and intensity, it sends analog control signals to switches 26 and 27 via the digital-to-analog converter 28. The microprocessor 21 controls the digital-to-analog converter 28 to output a specific analog voltage signal, causing switch 26 to close and switch 27 to open. At this time, adjusting resistor 24 is connected to the circuit, changing the operating parameters of the detector circuit 4 and improving its ability to detect weak signals.

[0048] The detector power divider includes a housing 13, which is made of aluminum alloy.

[0049] Reference Figure 2 The housing 13 includes a base 14 and a cover plate 15, the cover plate 15 being connected to the base 14 by screws.

[0050] The base 14 and cover 15 of the aluminum alloy housing 13 are connected by eight M3 stainless steel screws, ensuring the airtightness and mechanical strength of the housing 13. During installation and maintenance, the cover 15 can be easily removed and installed using a Phillips screwdriver to inspect and repair the internal circuitry.

[0051] The radio frequency input terminal 1 has two terminals, the detector output terminal 7 has two terminals, and the radio frequency output terminal 6 has one terminal.

[0052] Two RF input terminals 1: These enable simultaneous input of RF signals from different signal sources or frequency bands, providing possibilities for complex signal processing scenarios. For example, in a communication system, signals from different base stations or frequency bands can be input simultaneously and processed separately by the power divider 2 and subsequent circuitry, improving the component's signal processing capabilities and flexibility.

[0053] The two detector outputs 7 can simultaneously detect two different signals and output the detection results. This is very useful for applications that require simultaneous monitoring of the power of multiple signals, such as in multi-antenna communication systems. The two detector outputs 7 can be used to monitor the signal power of different antenna ports separately, providing more data support for system signal adjustment and optimization.

[0054] A single RF output terminal 6 combines the signals processed by the power divider 2 and the combiner 5 into a single output, meeting the requirements of subsequent devices for a single RF signal input. For example, the combined signal can be input to a power amplifier for further amplification and then used for signal transmission and other operations, achieving efficient signal transmission and processing.

[0055] During work:

[0056] Signal input stage: Radio frequency signals from different frequency bands from the base station transmitter are connected to the two radio frequency input terminals 1 of the detector power divider via cables. The radio frequency signals enter the power divider 2 through the solder pin interface.

[0057] Power distribution stage: Power divider 2 receives the RF input signal and divides the signal power into the signal to be synthesized and the signal to be detected according to a preset ratio. For example, according to a 6:4 ratio, 60% of the signal power goes to the signal to be synthesized and 40% of the signal power goes to the signal to be detected.

[0058] Coupling and separation stage: The signal to be detected is transmitted to the directional coupler 3. The directional coupler 3 performs coupling and separation of the signal to be detected through the microstrip edge coupling line, coupling part of the signal energy to the coupling output end. The signal power output by the coupling output end is about 10% of the power of the signal to be detected.

[0059] Power detection stage: The signal output from the coupling output terminal is connected to the detection circuit 4. The gate of MOSFET 1 receives this signal and compares it with the reference voltage signal of the gate of MOSFET 2. Through the current mirror 23 circuit, the source currents of MOSFET 1 and MOSFET 2 are kept consistent, and their drain currents are converted into voltage signals through a resistor. The detection diode rectifies the signal, and the analog-to-digital converter 20 converts the analog voltage signal into a digital signal and transmits it to the microprocessor 21 for analysis and processing to obtain the power value of the signal.

[0060] Adjustment Phase: Based on the detected signal power value, frequency, and other parameters, the microprocessor 21 determines whether the operating parameters of the detector circuit 4 need to be adjusted. If so, the microprocessor 21 sends analog control signals to switches 26 and 27 in the adjustment circuit via the digital-to-analog converter 28 to adjust the connection of the adjustment resistor and change the operating parameters of the detector circuit 4 to improve the detection adaptability.

[0061] Signal synthesis and output stage: The signal to be synthesized is transmitted to synthesizer 5. Synthesizer 5 combines the two signals into one signal and outputs it to the power amplifier through the solder pin interface of RF output terminal 6 for further signal amplification and subsequent processing.

[0062] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A detector power divider assembly, characterized in that, include: Radio frequency input terminal (1) is used to connect to external devices; The power divider (2) is used to receive the radio frequency input signal and divide the signal power of the radio frequency input terminal (1) into the signal terminal to be synthesized and the signal terminal to be detected. The directional coupler (3) includes a microstrip edge coupling line connected to the end of the signal to be detected, and is used to couple and separate the signal to be detected to form a coupled output end; The detection circuit (4) is connected to the coupling output terminal and is used to perform power detection on the signal output by the coupling output terminal, and is connected to the detection output terminal (7). Synthesizer (5) is used to combine the signals output from the signal to be synthesized into one channel and connect it to the radio frequency output terminal (6).

2. The detector power divider assembly according to claim 1, characterized in that, The RF input terminal (1) and RF output terminal (6) are solder pin interfaces, and the detector output terminal (7) is an SSMB-JFD interface.

3. The detector power divider assembly according to claim 2, characterized in that, The detector power divider is a stacked structure. The detector power divider includes a top layer (8), a ground plane layer (9), a power supply layer (10), and a bottom layer (11). The power divider (2), the directional coupler (3), and the synthesizer (5) are located on the top layer (8). The detector circuit (4) and the detector output terminal (7) are located on the bottom layer (11). The ground plane layer (9) is a copper layer.

4. The detector power divider assembly according to claim 3, characterized in that, A metal shield (12) is provided between the top layer (8) and the bottom layer (11).

5. The detector power divider assembly according to claim 4, characterized in that, The detection circuit (4) includes a MOS transistor (16) and a MOS transistor (17). The gate of the MOS transistor (16) is connected to the coupled output terminal, and the gate of the MOS transistor (17) is connected to the reference voltage signal. The drain and collector of the MOS transistor (16) are connected to an analog-to-digital converter (20) through a resistor (18). The drain and collector of the MOS transistor (17) are connected to the analog-to-digital converter (20) through a resistor (19). The output terminal of the analog-to-digital converter (20) is connected to a microprocessor (21). A grounded detector diode (22) is connected between the resistor (19) and the analog-to-digital converter (20). The sources of the MOS transistor (16) and the MOS transistor (17) are grounded through a current mirror (23).

6. The detector power divider assembly according to claim 5, characterized in that, An adjustment circuit is provided between the gate and drain of the MOS transistor (16). The adjustment circuit includes a first adjustment resistor (24) and a second adjustment resistor (25) connected in parallel. The first adjustment resistor (24) is connected in series with a first switch (26), and the second adjustment resistor (25) is connected in series with a second switch (27).

7. The detector power divider assembly according to claim 6, characterized in that, A digital-to-analog converter (28) is connected between the adjustment circuit and the microprocessor (21). The digital-to-analog converter (28) is used to receive digital signals from the microprocessor (21) and send analog signals to switch one (26) and switch two (27).

8. The detector power divider assembly according to claim 7, characterized in that, The detector power divider includes a housing (13), which is made of aluminum alloy.

9. The detector power divider assembly according to claim 8, characterized in that, The housing (13) includes a base (14) and a cover plate (15), the cover plate (15) being connected to the base (14) by screws.

10. The detector power divider assembly according to claim 9, characterized in that, There are two radio frequency input terminals (1), two detector output terminals (7), and one radio frequency output terminal (6).

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