Online dynamic adjustment attenuator

Abstract

The utility model discloses an on-line dynamic regulation attenuator which specifically comprises an attenuation circuit and a micro-control unit, the output end of the micro-control unit is connected with the input end of the attenuation circuit, and the micro-control unit controls the attenuation circuit to regulate the attenuation value. According to the embodiment of the utility model, the online dynamic adjustment of the attenuation value is realized, the insertion loss of the attenuator is reduced, the transmission speed of a digital signal in the attenuator is improved, and the requirement of a modern communication system on the precision adjustment of the intensity of the digital signal is met.

Description

Technical Field

[0001] The utility model relates to the technical field of digital communications, in particular to an online dynamic adjustment attenuator. Background Art

[0002] In the field of digital communications, attenuators are commonly used to adjust signal strength. As a key passive component, they control the strength of digital signals to meet the system's signal strength adjustment requirements. Traditional attenuators are typically fixed-value attenuators that cannot be dynamically adjusted online, limiting their application in complex communication systems. Furthermore, traditional attenuators have high insertion loss and cannot meet the requirements of high-speed data transmission. Therefore, implementing online dynamic adjustment of attenuators, reducing insertion loss, and increasing data transmission speeds have become urgent challenges in the field of digital communications. Utility Model Content

[0003] The utility model provides an online dynamic adjustment attenuator, which realizes online dynamic adjustment of the attenuation value, reduces the insertion loss of the attenuator, improves the digital signal transmission speed of the attenuator, and meets the precise requirements of modern communication systems for digital signal strength adjustment.

[0004] The present invention provides an online dynamic adjustment attenuator, comprising:

[0005] An attenuation circuit and a micro control unit are provided, wherein the output end of the micro control unit is connected to the input end of the attenuation circuit, and the micro control unit controls the attenuation circuit to adjust the attenuation value.

[0006] Furthermore, the attenuation circuit includes:

[0007] Attenuation chip, capacitor, inductor and resistor, wherein the capacitor, inductor and resistor are respectively connected to the chip pins of the attenuator chip.

[0008] Furthermore, the attenuation chip includes:

[0009] The chip pins of the attenuation chip at least include: a data input pin, a clock input pin, a latch enable input pin, a radio frequency output pin and an attenuation value pin.

[0010] Furthermore, the attenuation chip also includes:

[0011] The radio frequency output pin of the attenuation chip outputs an adjusted attenuation value signal, and the attenuation value pin of the attenuation chip is grounded.

[0012] Furthermore, the attenuation chip also includes:

[0013] The data input pin, the clock input pin and the latch enable input pin may also be connected to a serial peripheral interface communication bus, and the serial peripheral interface communication bus is also connected to an output end of the micro control unit.

[0014] Furthermore, the attenuator chip includes:

[0015] At least one digital step attenuator chip, wherein the minimum attenuation value of the digital step attenuator chip includes 0.5dB, and the maximum attenuation value includes 31.5dB.

[0016] Furthermore, the attenuation step gain in the digital step attenuation chip includes at least 0.5 dB.

[0017] Furthermore, the models of the digital step attenuation chip include at least: F1912 chip, wherein the operating frequency of the F1912 chip is 1 MHz to 4 GHz.

[0018] Furthermore, the output end of the micro control unit is connected to the input end of the attenuation circuit, including:

[0019] The output end of the micro control unit is connected to a data input pin, a clock input pin and a latch enable input pin of an attenuation chip in the attenuation circuit.

[0020] Furthermore, the attenuator further comprises:

[0021] The micro control unit is communicatively connected to a cloud platform, wherein the cloud platform at least includes a monitoring setting page.

[0022] In an embodiment of the present invention, an online dynamically adjustable attenuator includes at least an attenuation circuit and a microcontroller unit, wherein the output of the microcontroller unit is connected to the input of the attenuation circuit, the microcontroller unit outputs a digital control signal which is transmitted to the attenuation circuit via the input port of the attenuation circuit, and the attenuation circuit receives the digital control signal to adjust the attenuation value. The present invention utilizes the attenuation circuit and the microcontroller unit to form an online dynamically adjustable attenuator, thereby reducing the insertion loss of the attenuator, thereby ensuring the quality of digital signal transmission and increasing the transmission speed of digital signals in the attenuator. The output of the microcontroller unit is connected to the input of the attenuation circuit, enabling online dynamic adjustment of the attenuation value, achieving the beneficial effect of precisely controlling the attenuation value, and meeting the precise requirements of modern communication systems for adjusting digital signal strength.

[0023] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of an online dynamic adjustment attenuator provided according to an embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of another online dynamic adjustment attenuator provided according to an embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of another online dynamic adjustment attenuator provided according to an embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of a monitoring setting page provided according to an embodiment of the present utility model;

[0029] Figure 5 This is a schematic diagram of an attenuation chip circuit provided according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0030] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first," "second," and the like in the specification and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the numbers used in this manner are interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a list of products or devices is not necessarily limited to those explicitly listed, but may include other elements that are not explicitly listed or inherent to those products or devices.

[0032] Figure 1 A schematic diagram of an online dynamic adjustment attenuator provided by an embodiment of the utility model, see Figure 1 As shown, the online dynamic adjustment attenuator includes:

[0033] An attenuation circuit and a micro control unit are provided, wherein the output end of the micro control unit is connected to the input end of the attenuation circuit, and the micro control unit controls the attenuation circuit to adjust the attenuation value.

[0034] In the embodiment of the present invention, the attenuation circuit can be understood as an electronic circuit responsible for receiving the control signal transmitted by the micro control unit to adjust the signal strength. For example, the attenuation circuit includes at least: an attenuation chip, a capacitor, an inductor and a resistor.

[0035] The microcontroller unit is a component of the online dynamic adjustment attenuator, which is used to generate a digital control signal to adjust the attenuation output by the attenuation circuit. The elements in the microcontroller unit include at least: a memory or a processor. For example, the microcontroller unit can control external devices or circuits to achieve specific functions by executing the program stored in the memory.

[0036] The attenuation value can be understood as the reduction in digital signal strength relative to the original signal strength, and is used to describe the strength loss of the digital signal during transmission. The unit of the attenuation value may include: decibel or percentage. For example, the digital signal strength attenuates by 35 decibels or the digital signal strength attenuates by 35%.

[0037] Specifically, the online dynamic adjustment attenuator includes at least the following components: an attenuation circuit and a microcontroller unit, wherein the microcontroller unit includes an input / output port, the attenuation circuit includes an input / output port, the output port of the microcontroller unit is connected to the input port of the attenuation circuit, the microcontroller unit outputs a digital control signal which is transmitted to the inside of the attenuation circuit through the input port of the attenuation circuit, and the attenuation circuit receives the digital control signal to adjust the attenuation value.

[0038] In an embodiment of the present invention, an online dynamically adjustable attenuator includes at least an attenuation circuit and a microcontroller unit, wherein the output of the microcontroller unit is connected to the input of the attenuation circuit, the microcontroller unit outputs a digital control signal which is transmitted to the attenuation circuit via the input port of the attenuation circuit, and the attenuation circuit receives the digital control signal to adjust the attenuation value. In this embodiment of the present invention, the attenuation circuit and the microcontroller unit are used to form an online dynamically adjustable attenuator, thereby reducing the insertion loss of the attenuator, thereby ensuring the quality of digital signal transmission and increasing the transmission speed of digital signals in the attenuator. The output of the microcontroller unit is connected to the input of the attenuation circuit, enabling online dynamic adjustment of the attenuation value, achieving the beneficial effect of precisely controlling the attenuation value, and meeting the precise requirements of modern communication systems for adjusting digital signal strength.

[0039] Figure 2 Another schematic diagram of an online dynamic attenuator provided by the present invention is shown in FIG. Figure 2 As shown, the attenuation circuit includes:

[0040] Attenuation chip, capacitor, inductor and resistor, wherein the capacitor, inductor and resistor are respectively connected to the chip pins of the attenuator chip.

[0041] In an embodiment of the present invention, the attenuation chip refers to an integrated circuit for adjusting signal strength. For example, the attenuation chip may include: an F1912 chip or a field programmable gate array (FPGA) chip, wherein the attenuation chip includes at least one chip pin.

[0042] Capacitors (C) are used for frequency compensation and impedance matching, inductors (L) are used for impedance matching and signal filtering, and resistors (R) are used to consume signal power and reduce signal amplitude. Capacitors and resistors can form an RC circuit to adjust the frequency response characteristics of the circuit, and capacitors and inductors can form an LC circuit to achieve characteristics such as signal filtering at a specific frequency. For example, the units of capacitance can include: farad or microfarad, the units of inductance can include: Henry or henry, and the units of resistance can include: ohm or kilo-ohm.

[0043] Specifically, the attenuation circuit is composed of at least one attenuation chip, a capacitor, an inductor and a resistor, wherein the attenuation chip contains at least one chip pin for connecting with external components such as capacitors, inductors and resistors, and components such as capacitors, inductors and resistors are connected to the chip pins of the attenuation chip through their respective pins or wires.

[0044] It is understood that the connection method of the capacitors, inductors, and resistors to the chip pins can be changed based on the attenuation circuit design requirements. For example, at least one capacitor and at least one inductor can be connected in parallel, and the parallel circuit can be connected to at least one chip pin of the attenuation chip, or at least one inductor can be connected in series, and the series circuit can be connected to at least one chip pin of the attenuation chip. It is understood that the values of the capacitors, inductors, and resistors can be changed based on the attenuation circuit design requirements. For example, the capacitor value can include: 300 farads or 200 microfarads, the inductor value can include: 300 henrys or 200 henrys, and the resistor value can include: 300 ohms or 2 kilo-ohms.

[0045] Figure 3 Another schematic diagram of an online dynamic attenuator provided by the present invention is shown in FIG. Figure 3 As shown, the attenuation chip includes:

[0046] The chip pins of the attenuation chip at least include: a data input pin, a clock input pin, a latch enable input pin, a radio frequency output pin and an attenuation value pin.

[0047] In an embodiment of the present invention, the data input pin is used to receive external input data signals, wherein these data signals are used to control a specific attenuation value or a specific attenuation state of the attenuator. For example, the attenuation state may include: attenuation enabled or attenuation disabled.

[0048] The clock input pin is used to receive an external clock signal and is responsible for synchronizing the data input process to ensure that the data is read or processed at the correct timing. For example, the data processing operation may include: data sampling or data storage.

[0049] The latch enable input pin is used to receive an external input level signal, control the latching and updating of data, and ensure that the data is stably stored inside the attenuation chip at the correct time. The level signal can include a low level signal and a high level signal. For example, if the latch enable input pin receives an external input level signal as a low level signal, the attenuation chip will not latch the data. If the latch enable input pin receives an external input level signal as a high level signal, the attenuation chip will latch the data at the input end.

[0050] The RF output pin is an output interface of the attenuation value signal, which is used to connect to an external device to be attenuated. For example, the RF output pin of the F1912 chip includes the RF2 pin, which outputs the attenuation value signal to the device to be attenuated.

[0051] The attenuation value pin is used to receive an external level signal to adjust the attenuation of the attenuator. For example, the attenuation value pins of the F1912 chip include at least: D0 attenuation value pin, D1 attenuation value pin, D2 attenuation value pin, D3 attenuation value pin, D4 attenuation value pin, and D5 attenuation value pin. The attenuation value is controlled by changing the level state of the six attenuation value pins D0 to D5.

[0052] Specifically, the attenuation circuit includes at least one attenuation chip, wherein the chip pins of the attenuation chip include at least: a data input pin for receiving an external data signal, a clock input pin for receiving an external clock signal, a latch enable input pin for receiving an external level signal and controlling the data latch update, a radio frequency output pin for outputting the attenuation amount and connecting to an external device to be attenuated, and an attenuation value pin for receiving a level signal to adjust the attenuation amount of the attenuator. These chip pins work together to ensure that the attenuation chip can accurately adjust the output attenuation value signal according to the input control signal.

[0053] Furthermore, in an embodiment of the present utility model, the attenuation chip further includes:

[0054] The radio frequency output pin of the attenuation chip outputs an adjusted attenuation value signal, and the attenuation value pin of the attenuation chip is grounded.

[0055] In the embodiment of the present invention, the attenuation value signal can be understood as a signal attenuated by an attenuation chip. For example, the attenuation value signal can include: a signal with attenuated signal amplitude or a signal with attenuated signal frequency.

[0056] Grounding the attenuation value pin refers to connecting the attenuation value pin on the attenuation chip to ground (GROUND, GND) to avoid unexpected attenuation settings.

[0057] Specifically, the attenuation chip includes a data input pin, a clock input pin, a latch enable input pin, an RF output pin and an attenuation value pin, as well as an RF output pin and an attenuation value pin. Among them, the grounded RF output pin is responsible for outputting the attenuation value signal after attenuation by the attenuation chip, and the attenuation value pin is connected to GND to avoid unexpected attenuation settings due to external interference or misoperation.

[0058] Furthermore, in an embodiment of the present utility model, the attenuation chip further includes:

[0059] The data input pin, the clock input pin and the latch enable input pin may also be connected to a serial peripheral interface communication bus, and the serial peripheral interface communication bus is also connected to the micro control unit.

[0060] In an embodiment of the present invention, a serial peripheral interface (SPI) communication bus refers to a network for data exchange and communication. The SPI communication bus exchanges and communicates data based on the SPI protocol. For example, the SPI communication bus exchanges and communicates data with the attenuation chip based on the SPI protocol, and the attenuation chip also communicates and shares data with the microcontroller unit through the SPI communication bus.

[0061] Specifically, the data input pin, clock input pin and latch enable input pin of the attenuation chip are not only connected to the microcontroller unit, but can also be connected to the SPI communication bus in accordance with the SPI protocol. The data input pin, clock input pin and latch enable input pin exchange and communicate data with the SPI communication bus. The SPI communication bus is also connected to the microcontroller unit end. The microcontroller unit exchanges and communicates data with the SPI communication bus in accordance with the SPI protocol.

[0062] For example, the standard SPI communication bus consists of a master output / slave input data line, a master input / slave output data line, a serial clock line, and a slave select line / chip select line. The data input pin of the F1912 chip is connected to the master output / slave input data line, the clock input pin of the F1912 chip is connected to the serial clock line, and the latch enable input pin of the F1912 chip is connected to the slave select line / chip select line.

[0063] For example, the attenuation chip and the microcontroller unit can receive data from peripheral devices through the SPI communication bus, wherein the peripheral devices may include: a cloud platform or a network controller, and the attenuation chip and the microcontroller unit follow the SPI protocol to communicate and share data with the peripheral devices.

[0064] Furthermore, in an embodiment of the present invention, the attenuator chip includes:

[0065] At least one digital step attenuator chip, wherein the minimum attenuation value of the digital step attenuator chip includes 0.5dB, and the maximum attenuation value includes 31.5dB.

[0066] In an embodiment of the present invention, a digital step attenuation chip refers to an electronic component responsible for realizing signal strength attenuation in a digital step manner, wherein digital stepping can be understood as a discrete quantization method of the signal attenuation amount during the signal attenuation process, and each step corresponds to an attenuation amount.

[0067] For example, the digital step attenuator chip includes: F1912 chip or PE4302 chip, and the number of bits of the digital step attenuator chip includes: 4 bits or 6 bits, wherein the 4-bit digital step attenuator chip can provide 16 levels of attenuation, and the 6-bit digital step attenuator chip can provide 64 levels of attenuation.

[0068] The minimum attenuation value can be understood as the lowest attenuation that the digital step attenuator chip can provide. For example, the minimum attenuation value includes at least 0.5dB. When the minimum attenuation value of the digital step attenuator chip is 0.5dB, the signal strength of the digital signal is attenuated by 0.5dB after passing through the digital step attenuator chip.

[0069] The maximum attenuation value can be understood as the highest attenuation that the digital step attenuator chip can provide. For example, the maximum attenuation value includes at least 31.5dB. When the minimum attenuation value of the digital step attenuator chip is 31.5dB, the signal strength of the digital signal is attenuated by 31.5dB after passing through the digital step attenuator chip.

[0070] Specifically, the attenuator chip includes at least one digital step attenuator chip that realizes signal strength attenuation in a digital step manner, wherein the digital step attenuator chip can provide an attenuation value range of 0.5dB to 31.5dB, wherein the starting point of the attenuation range is the minimum attenuation value: 0.5dB, and the end point of the attenuation range is the maximum attenuation value: 31.5dB.

[0071] Furthermore, in an embodiment of the present invention, the attenuation step gain in the digital step attenuation chip includes at least 0.5 dB.

[0072] In the embodiment of the present invention, the attenuation step gain can be understood as the minimum attenuation step. For example, the attenuation step gain includes: 0.5dB or 1dB. When the attenuation step gain is 0.5dB, it means that the change in signal strength decreases in steps of 0.5dB.

[0073] Specifically, the digital step attenuator chip adjusts the digital signal strength. The attenuation step gain of the digital step attenuator chip is at least 0.5dB. Each time the digital signal passes through the digital step attenuator chip with an attenuation step gain of at least 0.5dB, the signal strength will drop by at least 0.5dB.

[0074] Furthermore, in an embodiment of the present invention, the models of the digital step attenuation chip include at least: an F1912 chip, wherein the operating frequency of the F1912 chip is 1 MHz to 4 GHz.

[0075] Specifically, the attenuation circuit includes at least one digital step attenuator chip, wherein there are many types of digital step attenuator chips, and the types of digital step attenuator chips include at least: F1912 chip, and the operating frequency range of the F1912 chip covers the 1MHz to 4GHz frequency band.

[0076] Among them, the F1912 chip is a 6-bit digital step attenuator. The F1912 chip can provide 64 different attenuation steps. The fine step control enables the F1912 chip to accurately adjust signal attenuation. Users can select the appropriate attenuation step size according to their needs to meet different signal processing requirements. The F1912 chip has a wide operating frequency range and can operate at different frequencies to meet different application requirements.

[0077] Furthermore, in an embodiment of the present invention, the output end of the micro control unit is connected to the input end of the attenuation circuit, including:

[0078] The output end of the micro control unit is connected to a data input pin, a clock input pin and a latch enable input pin of an attenuation chip in the attenuation circuit.

[0079] Specifically, the output port of the microcontroller unit is connected to the attenuation chip in the attenuation circuit, specifically to the data input pin, clock input pin and latch enable input pin of the attenuation chip. The data input pin, clock input pin and latch enable input respectively receive different digital signals from the microcontroller unit.

[0080] For example, the output port of the microcontroller unit includes at least: an input / output pin and a clock pin. One or more input / output pins of the microcontroller unit are connected to the data input pin of the attenuation chip, the clock pin of the microcontroller unit is connected to the clock input pin of the attenuation chip, and another one or more input / output pins of the microcontroller unit are connected to the latch enable input pin of the attenuation chip; the data input pin receives the data signal for controlling the attenuation of F1912 transmitted by the input / output pin of the microcontroller unit, the clock input pin receives the clock signal sent by the clock pin of the microcontroller unit, and is used to synchronize the data transmission between the microcontroller unit and the F1912 chip, and the latch enable input pin receives the level signal transmitted by the input / output pin of the microcontroller unit. When the microcontroller unit needs to latch data, the microcontroller unit will generate a signal on the control pin to trigger the latch mechanism of the F1912 chip.

[0081] Furthermore, in an embodiment of the present invention, the attenuator further comprises:

[0082] The micro control unit is communicatively connected to a cloud platform, wherein the cloud platform at least includes a monitoring setting page.

[0083] In the embodiment of the present invention, the cloud platform can be understood as a remote service platform based on the Internet or cloud computing technology. The uses of the cloud platform can include: real-time monitoring of the micro control unit status or remote control of the micro control unit status.

[0084] A communication connection refers to a connection between different systems or components established through a communication protocol. For example, the communication protocol may include: SPI protocol or local interconnect network bus protocol. Different systems or components can exchange data and transfer information through the communication connection.

[0085] The monitoring settings page can be understood as a functional area in the cloud platform. For example, the purpose of the monitoring settings page may include: configuring the micro control unit or querying the historical data of the micro control unit, wherein configuring the micro control unit at least includes: setting the signal attenuation. For example, the signal attenuation is set on the monitoring settings page, and the set signal attenuation is transmitted to the attenuation circuit via the micro control unit. Figure 4 As shown in the figure, set the signal attenuation in the black solid line box on the monitoring setting page.

[0086] Specifically, the microcontroller unit establishes a communication connection with a cloud platform based on the Internet or cloud computing technology through a communication protocol, and the microcontroller unit exchanges data and transmits information with the cloud platform through the communication connection. The cloud platform includes at least one monitoring setting page, and the signal attenuation is set in the monitoring setting page. The signal attenuation is transmitted to the microcontroller unit through the communication connection, and the microcontroller unit transmits the signal attenuation to the attenuation circuit.

[0087] Figure 5 A schematic diagram of an attenuation chip circuit provided by an embodiment of the present utility model, see Figure 5 As shown, the attenuation chip circuit includes at least: an attenuation pin, an inductor, a capacitor and a resistor, and the attenuation pin includes at least the following pins: a data (DATA) input pin, a clock (CLK) input pin, a latch enable (LE) input pin, a power supply (VDD) pin, a not connected (NC) pin, a mode selection (VMODE) pin, a radio frequency input pin (RF1), a radio frequency output pin (RF2), an attenuation value pin and a ground pin (GND), wherein the attenuation value pin includes: a D0 pin, a D1 pin, a D2 pin, a D3 pin, a D4 pin and a D5 pin, the inductor includes at least: an inductor L8 and an inductor L11, and the capacitor includes at least: a capacitor C29, a capacitor C30, a capacitor C 32. capacitor C62, capacitor C63, capacitor C64, capacitor C65, capacitor C71, capacitor C72 and capacitor C88, the resistors include at least: resistor R55, resistor R56, resistor R73 and resistor R74, the internal resistance of inductor L8 and inductor L11 is 100 ohms, the size of capacitor C29 is 1 nanofarad, the size of capacitor C30 and capacitor C32 is 47 picofarads, the size of capacitor C62 and capacitor C72 is 100 nanofarad, the size of capacitor C63, capacitor C64, capacitor C65 and capacitor C71 is 100 picofarad and the size of capacitor C88 is 1 picofarad, the size of resistor R55, resistor R56, resistor R73 and resistor R74 is 100 ohms. In the attenuation chip circuit, the VDD pin is connected to a 3.3 volt voltage through an inductor L8 and is grounded through a capacitor C62; the VMODE pin is connected to a 3.3 volt voltage through a resistor R56 and an inductor L11 and is grounded through capacitors C71 and C72, wherein capacitors C71 and C72 are connected in parallel; the RF2 pin is connected to an external device REC through a capacitor C32 and is grounded through a capacitor C88, wherein the external device REC is the device to be attenuated; the RF1 pin is connected to an external device MOD_IN through capacitors C29 and C30, wherein the external The external device MOD_IN is used to transmit the radio frequency signal to the RF1 pin; the DATA pin is connected to PC7 through a resistor R55 and is grounded through a capacitor C64; the CLK pin is connected to PC6 through a resistor R73 and is grounded through a capacitor C63; the LE pin is connected to PC1 through a resistor R74 and is grounded through a capacitor C65; PC7, PC6 and PC1 are external network connectors that can be connected to the microcontroller unit; the D0 pin, D1 pin, D2 pin, D3 pin, D4 pin, D5 pin, GND pin and NC pin are connected to the ground.

[0088] It should be understood that the above specific embodiments do not limit the scope of protection of the embodiments of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An online dynamic adjustment attenuator, characterized in that: The attenuator comprises: An attenuation circuit and a micro control unit, wherein the output end of the micro control unit is connected to the input end of the attenuation circuit, and the micro control unit controls the attenuation circuit to adjust the attenuation value.

2. The attenuator according to claim 1, characterized in that: The attenuation circuit comprises: An attenuator chip, a capacitor, an inductor, and a resistor, wherein the capacitor, the inductor, and the resistor are respectively connected to the chip pins of the attenuator chip.

3. The attenuator according to claim 2, characterized in that: The attenuation chip comprises: The chip pins of the attenuation chip at least include: a data input pin, a clock input pin, a latch enable input pin, a radio frequency output pin and an attenuation value pin.

4. The attenuator according to claim 3, characterized in that: The attenuation chip further includes: The radio frequency output pin of the attenuation chip outputs an adjusted attenuation value signal, and the attenuation value pin of the attenuation chip is grounded.

5. The attenuator according to claim 3, characterized in that: The attenuation chip further includes: The data input pin, the clock input pin and the latch enable input pin may also be connected to a serial peripheral interface communication bus, and the serial peripheral interface communication bus is also connected to the micro control unit.

6. The attenuator according to claim 2, characterized in that: The attenuator chip comprises: At least one digital step attenuator chip, wherein the minimum attenuation value of the digital step attenuator chip includes 0.5dB, and the maximum attenuation value includes 31.5dB.

7. The attenuator according to claim 6, characterized in that: The attenuation step gain in the digital step attenuation chip includes at least 0.5dB.

8. The attenuator according to claim 7, characterized in that: The models of the digital step attenuation chip include at least: F1912 chip, wherein the operating frequency of the F1912 chip is 1 MHz to 4 GHz.

9. The attenuator according to claim 1, characterized in that: The output end of the micro control unit is connected to the input end of the attenuation circuit, including: The output end of the micro control unit is connected to a data input pin, a clock input pin and a latch enable input pin of an attenuation chip in the attenuation circuit.

10. The attenuator according to claim 1, characterized in that: The attenuator further comprises: The micro control unit is communicatively connected to a cloud platform, wherein the cloud platform at least includes a monitoring setting page.

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