CN113541120A - Lightning protection circuit, 5G communication circuit and communication equipment - Google Patents

Lightning protection circuit, 5G communication circuit and communication equipment Download PDF

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Publication number
CN113541120A
CN113541120A CN202010296718.5A CN202010296718A CN113541120A CN 113541120 A CN113541120 A CN 113541120A CN 202010296718 A CN202010296718 A CN 202010296718A CN 113541120 A CN113541120 A CN 113541120A
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CN
China
Prior art keywords
discharge tube
capacitor
lightning protection
circuit
inductor
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CN202010296718.5A
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Chinese (zh)
Inventor
赵修茂
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Shenzhen Tatfook Technology Co Ltd
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Shenzhen Tatfook Technology Co Ltd
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Priority to CN202010296718.5A priority Critical patent/CN113541120A/en
Publication of CN113541120A publication Critical patent/CN113541120A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/06Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q1/00Details of selecting apparatus or arrangements
    • H04Q1/02Constructional details
    • H04Q1/11Protection against environment
    • H04Q1/116Protection against environment lightning or EMI protection, e.g. shielding or grounding

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  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The application discloses a lightning protection circuit, a 5G communication circuit and communication equipment, wherein the lightning protection circuit at least comprises a discharge tube, an inductor and a capacitor, one end of the discharge tube, one end of the inductor and one end of the capacitor are all connected with the input end of the lightning protection circuit, the other end of the discharge tube is grounded, and the other end of the inductor is connected with the other end of the capacitor; the voltage value of the input end is larger than the preset threshold value of the discharge tube, and the discharge tube is conducted. The OOK signal can be transmitted through the capacitor, and therefore insertion loss caused by the inductor is reduced.

Description

Lightning protection circuit, 5G communication circuit and communication equipment
Technical Field
The application relates to the field of 5G communication, in particular to a lightning protection circuit, a 5G communication circuit and communication equipment.
Background
In the fifth generation (5G) communication technology, when a 5G communication circuit is used to transmit an On-Off Keying (OOK) signal, the 5G communication circuit generally needs to have a lightning protection function, that is, the 5G communication circuit is generally provided with a lightning protection circuit.
The existing lightning protection circuit at least comprises a large inductor, wherein the large inductor is usually an inductor in the microhenry level, and an OOK signal can be blocked by the large inductor when passing through the lightning protection circuit, so that the insertion loss of the OOK signal is increased.
Disclosure of Invention
The application provides a lightning protection circuit and 5G communication circuit to reduce the insertion loss when OOK signal passes through the lightning protection circuit.
In order to solve the technical problem, the application adopts a technical scheme that: a lightning protection circuit at least comprises a discharge tube, an inductor and a capacitor, wherein one end of the discharge tube, one end of the inductor and one end of the capacitor are connected with an input end of the lightning protection circuit, the other end of the discharge tube is grounded, and the other end of the inductor is connected with the other end of the capacitor; and the voltage value of the input end is greater than the preset threshold value of the discharge tube, and the discharge tube is conducted.
Optionally, the lightning protection circuit further includes a resistor, and the other end of the inductor and the other end of the capacitor are connected to the output end of the lightning protection circuit through the resistor.
Optionally, the input end receives an OOK signal, and the OOK signal is transmitted through the capacitor to reduce insertion loss of the OOK signal.
In order to solve the above technical problem, another technical solution adopted by the present application is: providing a 5G communication circuit, wherein the 5G communication circuit at least comprises a lightning protection circuit and a 5G communication device; the lightning protection circuit at least comprises a discharge tube, an inductor and a capacitor, one end of the discharge tube, one end of the inductor and one end of the capacitor are connected with the input end of the 5G communication circuit, the other end of the discharge tube is grounded, and the other end of the inductor and the other end of the capacitor are coupled with the 5G communication device; and the voltage value of the input end is greater than the preset threshold value of the discharge tube, and the discharge tube is conducted.
Optionally, the lightning protection circuit further includes a resistor, and the other end of the inductor and the other end of the capacitor are coupled to the 5G communication device through the resistor.
Optionally, the 5G communication circuit further comprises a functional circuit connected between the resistor and the 5G communication device.
Optionally, the input end receives an OOK signal, and the OOK signal is transmitted through the capacitor to reduce insertion loss of the OOK signal.
Optionally, the inductance has an inductance value of the order of microhenries, and the discharge tube comprises a gas discharge tube.
Optionally, the OOK signal is an 2.176MHz communication control signal.
In order to solve the above technical problem, the present application adopts another technical solution: a communication device is provided, which comprises the 5G communication circuit.
The beneficial effect of this application is: different from the prior art, the lightning protection circuit at least comprises a discharge tube, an inductor and a capacitor, wherein one end of the discharge tube, one end of the inductor and one end of the capacitor are connected with the input end of the lightning protection circuit, the other end of the discharge tube is grounded, and the other end of the inductor is connected with the other end of the capacitor; the voltage value of the input end is larger than the preset threshold value of the discharge tube, and the discharge tube is conducted. The capacitor and the inductor of the lightning protection circuit are arranged in parallel, and when the lightning protection circuit receives an OOK signal, the OOK signal is transmitted through the capacitor, so that the insertion loss of the inductor to the OOK signal is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic circuit diagram of an embodiment of a lightning protection circuit of the present application;
FIG. 2 is a schematic circuit diagram of another embodiment of the lightning protection circuit of the present application;
FIG. 3 is a circuit schematic of an embodiment of the present 5G communication circuit;
fig. 4 is a circuit diagram of an embodiment of a communication circuit of the present application 5G.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a circuit diagram illustrating an embodiment of a lightning protection circuit according to the present application. The application provides a lightning protection circuit 10, wherein the output residual voltage value of the lightning protection circuit 10 is lower than the overvoltage peak value which can be endured by the protection circuit and has a certain allowance; the lightning protection circuit 10 should have sufficient inrush current capability and response speed.
The lightning protection circuit 10 comprises at least a discharge tube 11, an inductor 12 and a capacitor 13. The discharge tube 11 comprises a gas discharge tube, when the external voltage is increased to exceed the insulation strength of gas, the gap between two poles of the gas discharge tube breaks down the discharge, the original insulation state is converted into a conductive state, and the voltage between the two poles of the gas discharge tube is maintained at the residual voltage level determined by a discharge arc channel after the conduction; when the gas discharge tube is in a conductive state, the voltage between two electrodes of the gas discharge tube is low, generally between 20-50V, so that the gas discharge tube can well protect a rear-stage circuit.
The inductance value of the inductor 12 is in microhenry level and the unit is uH, such as 1-100 uH. In the 5G communication field, to satisfy the characteristics of high speed, low delay, large capacity, etc., an OOK signal with a short wavelength is selected to satisfy the requirement, but the strength of the OOK signal is very small, and in order to allow the OOK signal to pass smoothly, an inductor 12 of the microhenry level is used. The OOK signal produces a strong change in magnetic field strength when the inductor 12 is powered on and off. When the lightning protection circuit 10 receives the OOK signal and the discharge tube 11 is in a conductive state, the voltage between two electrodes of the discharge tube 11 is low, and since the inductance value of the inductor 12 is in the microhenry level, the OOK signal passes through the inductor 12, the inductor 12 can have a function of current stabilization and filtering, but the magnetic field generated by the inductor 12 can also cause insertion loss of the OOK signal.
The capacitor 13 is a large capacitor, that is, a large capacitor is connected in parallel to the inductor 12, and a specific capacitance value can be calculated according to the capacitance Q, i.e., Q/U, where U represents a voltage applied across the lightning protection circuit 10, and the capacitor 13 can stabilize the voltage in the lightning protection circuit 10, so that the OOK signal is transmitted through the capacitor 13.
Specifically, one end of the discharge tube 11, one end of the inductor 12, and one end of the capacitor 13 are all connected to the input terminal 101 of the lightning protection circuit 10, the other end of the discharge tube 11 is grounded, and the other end of the inductor 12 is connected to the other end of the capacitor 13. The discharge tube 11 is provided with a preset threshold, wherein the discharge tube 11 is provided with the preset threshold in advance, and when the voltage difference value at two ends of the discharge tube 11 exceeds the preset threshold, the discharge tube 11 is conducted and is in a conducting state; therefore, the voltage value of the input terminal 101 of the lightning protection circuit 10 is greater than the preset threshold value of the discharge tube 11, and the discharge tube 11 is turned on.
The capacitor 13 and the inductor 12 of the lightning protection circuit 10 of this embodiment are arranged in parallel, when the lightning protection circuit 10 receives the OOK signal, the blocking effect of the inductor 12 is weakened, and the OOK signal is transmitted through the capacitor 13, so that the insertion loss of the inductor 12 to the OOK signal is reduced.
Furthermore, the lightning protection circuit 10 further includes a resistor 2, please refer to fig. 2, and fig. 2 is a circuit diagram of another embodiment of the lightning protection circuit of the present application. The other end of the inductor 12 and the other end of the capacitor 13 are connected to the output terminal 102 of the lightning protection circuit 10 through the resistor 2.
In particular, as can be seen from the above, one end of the inductor 12 and one end of the capacitor 13 are both connected to the input terminal 101 of the lightning protection circuit 10. When the resistor 2 is added, compared with the input end 101 of the lightning protection circuit 10, the resistor 2 is disposed at a position close to the output end 102 of the lightning protection circuit 10, and the resistor 2 is connected in series with the inductor 12, while the other end of the inductor 12 may be connected with the other end of the capacitor 13, that is, the inductor 12 is connected in parallel with the capacitor 13, if the other end of the inductor 12 is used as the output end 102 of the lightning protection circuit 10, one end of the input resistor 2 is connected with the output end 102 of the lightning protection circuit 10, and the other end of the capacitor 13 is connected with the output end 102 of the lightning protection circuit 10, that is, the other end of the inductor 12 is connected with the other end of the capacitor 13 as a node, that is, the node is connected with one end of the input resistor 2, and the other end of the resistor 2 is used as the output end 102 of the lightning protection circuit 10, as shown in fig. 2.
The input end 101 of the lightning protection circuit 10 receives an OOK signal, and the OOK signal may be transmitted through the capacitor 13 to reduce insertion loss of the OOK signal.
The capacitor 13 is an electronic component that holds and discharges electric charges. The type of the capacitor 13 is mainly determined by the electrode and the insulating medium, and as the connection between the circuits while the capacitor 13 is charged and discharged, allows the ac signal to pass and transmit to the next stage circuit, and provides a low impedance path for the inductor 12 of the component connected in parallel in the ac circuit, so that the OOK signal can transmit through the capacitor 13 for reducing the insertion loss of the OOK signal.
Referring to fig. 3, fig. 3 is a schematic circuit diagram of a 5G communication circuit according to an embodiment of the present application. The 5G communication circuit is particularly important to have the characteristics of low power consumption, large connection, low time delay and high reliability. The 5G communication circuit comprises at least a lightning protection circuit 10 and a 5G communication device 4. The lightning protection circuit 10 includes at least a discharge tube 11, an inductor 12 and a capacitor 13. The discharge tube 11, the inductor 12 and the capacitor 13 are similar to the discharge tube 11, the inductor 12 and the capacitor 13 shown in fig. 1 in structure and characteristics, and are not described herein again. And 5G communication equipment 4 adopts 5G communication technology as the component that 5G communication circuit constitutes, has high speed, ubiquitous net, low-power consumption, low time delay's characteristics.
The 5G communication circuit 4 uses 2.176MHz communication control signals, and the communication control signals are OOK signals. In 5G communication, 2.176MHz communication control signals are often used, and signals of such frequencies are also sometimes referred to as OOK signals because they are encoded in OOK.
OOK, On-Off Keying, binary amplitude Keying. Herein, the "amplitude keying" is also called "amplitude Shift keying" and is denoted as ask (amplitude Shift keying). OOK is a special case of ASK modulation, and one amplitude is taken as 0, and the other amplitude is not 0, which is OOK. Binary On-Off Keying (OOK), also known as binary amplitude Keying (2ASK), uses a unipolar non-return-to-zero code sequence to control the On and Off of a sinusoidal carrier.
Because the OOK modulation mode is simple to realize, the amplitude keying mode is widely applied to 5G communication and optical fiber communication systems.
Wherein, one end of the discharge tube 11, one end of the inductor 12 and one end of the capacitor 13 are all connected with the input end of the 5G communication circuit 4, the other end of the discharge tube 11 is grounded, and the other ends of the inductor 12 and the capacitor 13 are coupled with the 5G communication device 4; the reason why the coupling manner is adopted is that different 5G communication devices 4 have different functions, and corresponding functional components can be added between the output terminal 102 of the lightning protection circuit 10 and the 5G communication device 4 to meet the application expansion requirements in the future.
The voltage value of the input terminal 101 of the lightning protection circuit 10 is greater than the preset threshold value of the discharge tube 11, and the discharge tube 11 is conducted.
Optionally, as shown in fig. 3, the lightning protection circuit 10 further includes a resistor 2, and the other end of the inductor 12 and the other end of the capacitor 13 are coupled to the 5G communication device 4 through the resistor 2.
When the resistor 2 is connected in series with the lightning protection circuit 10, the resistor 2 can divide voltage, so that the 5G communication equipment 4 is protected.
The resistor 2 and the 5G communication device 4 are coupled, because different 5G communication devices 4 have different functions, and corresponding functional components can be added between the resistor 2 and the 5G communication device 4 to meet the requirement of application expansion in the future.
Specifically, referring to fig. 4, fig. 4 is a circuit diagram of an embodiment of the communication circuit of the present application 5G. The 5G communication circuit 4 further comprises a functional circuit 3, the functional circuit 3 being connected between the resistor 2 and the 5G communication device 4.
In particular, the functional circuit 3 is divided by function, in particular a digital circuit: the circuit for digital operation, storage, transmission and conversion by two binary digits of high and low level has the basic forms of gate circuit and trigger circuit, mainly including counter, decoder and memory; an analog circuit: the circuit for processing analog signals is divided into two types of linear and nonlinear circuits, wherein the linear circuit is also called an operational amplifier and is used for household appliances, automatic control and medical equipment, and the nonlinear circuit is used for a signal generator, a frequency converter and a wave detector; a microwave circuit: the circuit with the working frequency higher than 1000MHz is applied to the aspects of navigation, radar, satellite communication and the like. Therefore, different functional circuits can be selected according to different later application scenes so as to meet the requirements of users.
Optionally, the input terminal 101 of the lightning protection circuit 10 receives an OOK signal, and the OOK signal is transmitted through the capacitor 13 to reduce insertion loss of the OOK signal.
Further, the 5G communication circuit 4 is provided with a housing, and the 5G communication circuit 4 is grounded through the housing.
The 5G communication circuit 4 belongs to a small-signal system, which is important for processing noise and interference problems in the small-signal system, and other circuits and electronic components may exist between the 5G communication circuits 4, so that the 5G communication circuit 4 is provided with a housing, and the 5G communication circuit 4 can solve the noise and interference problems to a certain extent through the grounding of the housing.
Specifically, the grounding mode is a reasonable grounding mode selected according to requirements of an actual working environment, a circuit working frequency, a grounding mechanism and the like, and the selectable grounding modes include a suspension grounding mode, a single-point grounding mode, a multi-point grounding mode and the like, which are not limited herein. The suspension grounding is characterized in that the circuit has no reference ground level, the circuit has independent zero potential, and due to the independence, noise, electromagnetic interference and the like with other circuits can be avoided, but electrostatic charges cannot be effectively released, so the suspension grounding is generally used for some low-frequency electronic equipment; the single-point grounding is realized, and because the respective elements are only related to the self grounding resistance and low current, the elements are not interfered with each other, so that a uniform ground potential exists among the circuits, the bottom line is prevented from forming common impedance, and because no loop exists in the whole grounding channel, the interference of the ground loop current generated by a hard external magnetic field is avoided, thereby improving the performance of the 5G communication circuit 4; in a multi-point grounding system, grounding is generally performed in order of ground current flowing from small signal units to large signal units to reduce noise and interference.
The present application further proposes a communication device comprising the above-mentioned 5G communication circuit.
The above embodiments are merely examples, and not intended to limit the scope of the present application, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present application, or those directly or indirectly applied to other related arts, are included in the scope of the present application.

Claims (10)

1. A lightning protection circuit is characterized by at least comprising a discharge tube, an inductor and a capacitor, wherein one end of the discharge tube, one end of the inductor and one end of the capacitor are connected with an input end of the lightning protection circuit, the other end of the discharge tube is grounded, and the other end of the inductor is connected with the other end of the capacitor; and the voltage value of the input end is greater than the preset threshold value of the discharge tube, and the discharge tube is conducted.
2. The lightning protection circuit of claim 1, further comprising a resistor, wherein the other end of the inductor and the other end of the capacitor are connected to the output of the lightning protection circuit through the resistor.
3. The lightning protection circuit of claim 1, wherein the input receives an OOK signal that is transmitted through the capacitor to reduce insertion loss of the OOK signal.
4. A5G communication circuit is characterized in that the 5G communication circuit at least comprises a lightning protection circuit and 5G communication equipment; the lightning protection circuit at least comprises a discharge tube, an inductor and a capacitor, one end of the discharge tube, one end of the inductor and one end of the capacitor are connected with the input end of the 5G communication circuit, the other end of the discharge tube is grounded, and the other end of the inductor and the other end of the capacitor are coupled with the 5G communication device; and the voltage value of the input end is greater than the preset threshold value of the discharge tube, and the discharge tube is conducted.
5. The 5G communication circuit according to claim 4, wherein the lightning protection circuit further comprises a resistor, and the other end of the inductor and the other end of the capacitor are coupled to the 5G communication device through the resistor.
6. The 5G communication circuit according to claim 5, wherein the 5G communication circuit further comprises a functional circuit connected between the resistor and the 5G communication device.
7. The 5G communication circuit as claimed in any one of claims 4-6, wherein the input receives an OOK signal, the OOK signal being transmitted through the capacitor for reducing insertion loss of the OOK signal.
8. The 5G communication circuit according to claim 7, wherein the inductance has an inductance value of microHenry level, and the discharge tube comprises a gas discharge tube.
9. The 5G communication circuit of claim 8, wherein the OOK signal is an 2.176MHz communication control signal.
10. A communication device comprising the 5G communication circuit according to any one of claims 5 to 9.
CN202010296718.5A 2020-04-15 2020-04-15 Lightning protection circuit, 5G communication circuit and communication equipment Pending CN113541120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010296718.5A CN113541120A (en) 2020-04-15 2020-04-15 Lightning protection circuit, 5G communication circuit and communication equipment

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Application Number Priority Date Filing Date Title
CN202010296718.5A CN113541120A (en) 2020-04-15 2020-04-15 Lightning protection circuit, 5G communication circuit and communication equipment

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CN113541120A true CN113541120A (en) 2021-10-22

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004266963A (en) * 2003-03-03 2004-09-24 Nippon Telegr & Teleph Corp <Ntt> Modelling method for communication arrester, arrester and program
CN105162101A (en) * 2015-09-09 2015-12-16 成都川睿科技有限公司 Intelligent equipment lightning protection interface for intelligent transportation system
CN205863910U (en) * 2016-06-17 2017-01-04 深圳市威通科技有限公司 A kind of receiver and lightning protection circuit thereof
CN208890365U (en) * 2018-09-14 2019-05-21 深圳市中鹏电子有限公司 A kind of the power lightning protection circuit and lightning protection power source of 5G communication base station

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004266963A (en) * 2003-03-03 2004-09-24 Nippon Telegr & Teleph Corp <Ntt> Modelling method for communication arrester, arrester and program
CN105162101A (en) * 2015-09-09 2015-12-16 成都川睿科技有限公司 Intelligent equipment lightning protection interface for intelligent transportation system
CN205863910U (en) * 2016-06-17 2017-01-04 深圳市威通科技有限公司 A kind of receiver and lightning protection circuit thereof
CN208890365U (en) * 2018-09-14 2019-05-21 深圳市中鹏电子有限公司 A kind of the power lightning protection circuit and lightning protection power source of 5G communication base station

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