CN208337551U - A kind of lightning protection protective system that reduces is to the device of mobile radiotelephone signal transmission attenuation - Google Patents
A kind of lightning protection protective system that reduces is to the device of mobile radiotelephone signal transmission attenuation Download PDFInfo
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- CN208337551U CN208337551U CN201820258402.5U CN201820258402U CN208337551U CN 208337551 U CN208337551 U CN 208337551U CN 201820258402 U CN201820258402 U CN 201820258402U CN 208337551 U CN208337551 U CN 208337551U
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- grounding ports
- radio
- mainboard
- lightning protection
- signal
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Abstract
The utility model discloses a kind of reduction lightning protection protective systems to the device of mobile radiotelephone signal transmission attenuation, including mainboard, radio-frequency module and Anneta module, the grounding ports of Anneta module are connected with the grounding ports of mainboard by connecting line, the grounding ports of radio-frequency module and the grounding ports of mainboard are connected directly, the signal port of Anneta module is connected with the signal connection end mouth of radio-frequency module by RF coaxial line, and connect connection wire length of the RF coaxial line of the signal port of Anneta module and the signal connection end mouth of radio-frequency module than connecting the grounding ports of Anneta module and the grounding ports of mainboard.The device of the utility model does not increase significantly compared with conventional scheme in cost, and lightning protection effect is good, and mobile radiotelephone signal intensity is not also substantially reduced.
Description
Technical field
The utility model belongs to mobile communication equipment field, relates in particular to one kind for reducing lightning protection protective system pair
The device of mobile radiotelephone signal transmission attenuation.
Background technique
The wireless power-off sensor and FSU of steel tower can all use and arrive mobile radiotelephone signal, and require to believe in mobile wireless
Lightning protection is added on number circuit.It is excessive to frequently can lead to radio signal attenuation while carrying out lightning protection.
In design process, when transmitting mobile radiotelephone signal in PCB circuit board, it is desirable that radio-frequency transmission line wraps ground always to subtract
The loss of few transmitting radio frequency signal, and antenna is always outside in our devices used in everyday for having mobile wireless transfer function
It sets.The external radiofrequency signal that will lead to of antenna is subject to be struck by lightning, and in the lightning stroke experiment for radiofrequency signal mouth, radio frequency chip holds
Easily by broken by lightning.
The protection system of lightning protection often by radio-frequency front-end independent grounding, then accesses mainboard by very long one section of line
Ground.The energy being struck by lightning in this way would not directly pour into radio-frequency module, can prevent radio frequency chip from damaging, but doing so can make to penetrate
The decaying of frequency signal is larger, and more than 10db, this is the result is that unacceptable.So a kind of device is needed to realize the same of lightning protection
When guarantee movable signal transmission quality.
Utility model content
The utility model aim is to research and develop a kind of reduction lightning protection protective system to fill mobile radiotelephone signal transmission attenuation
Device can be common to the mobile radiotelephone signal application of lightning protection demand.
In view of the foregoing drawbacks, the utility model, which develops one kind, can reduce lightning protection protective system to the biography of mobile radiotelephone signal
The device of defeated decaying.The specific technical solution that the utility model uses is as follows:
A kind of lightning protection protective system that reduces is to the device of mobile radiotelephone signal transmission attenuation, which is characterized in that described device
Including mainboard, radio-frequency module and Anneta module, Anneta module has antenna circuit and lightning protection circuit and grounding ports and signal
Port, mainboard have grounding ports and radio-frequency module connectivity port, and radio-frequency module has grounding ports and signal connection end mouth, day
The grounding ports of wire module are connected to lightning protection circuit, and the grounding ports of Anneta module pass through connecting line phase with the grounding ports of mainboard
Even, the grounding ports of radio-frequency module and the grounding ports of mainboard are connected directly, the signal port of Anneta module and radio-frequency module
Signal connection end mouth is connected by RF coaxial line, and the signal for the signal port and radio-frequency module for connecting Anneta module connects
Connect connection wire length of the RF coaxial line of port than connecting the grounding ports of Anneta module and the grounding ports of mainboard.
Preferably, the connecting line for connecting the grounding ports of Anneta module and the grounding ports of mainboard is on mainboard
PCB trace.It is further preferred that the length of the connecting line of the grounding ports of the grounding ports and mainboard of connection Anneta module is at least
30mm。
In addition, the length of the RF coaxial line of the signal connection end mouth of the signal port and radio-frequency module of connection Anneta module
It is at least 50mm.
The utility model has the advantages that the utility model proposes a kind of device, come ensure communication interface can lightning protection protecting against shock while, drop
Low lightning protection protective system is to mobile radiotelephone signal transmission attenuation.We separate the ground of the lightning protection circuit of radio-frequency front-end and mainboard,
PCB trace by length greater than 30mm is connected to mainly, and by rf signal line by being more than that the RF coaxial line of 50mm connects
It is connected to radio-frequency module.Achieve the effect that lightning protection in this way, also ensures the intensity transmission of radiofrequency signal.The utility model have with
Lower advantage and the utility model has the advantages that 1, installation cost does not increase significantly compared with conventional scheme；2, lightning protection effect is good, will not be light
Easily by broken by lightning；3, mobile radiotelephone signal intensity is not substantially reduced.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of conditioning circuit in the device of the utility model.
Specific embodiment
In the prior art, the design of the general equipment containing communication module, antenna circuit+lightning protection circuit and radio frequency mould
It is directly connected to block and mainboard, this design radio frequency chip can be in lightning test by broken by lightning.If only considering lightning protection
Design, then antenna circuit+lightning protection circuit and radio-frequency module connection signal be not connected to ground, and this design can pass through lightning stroke
Experiment, but radio frequency signal attenuation is larger, is greater than 10db, decays larger to movable signal, is not available.
Therefore the utility model, which develops, a kind of realizes lightning protection effect in the case where avoiding movable signal greater attenuation
Device.Referring to Fig. 1, which is the device using the design of the utility model.As seen in Figure 1, antenna circuit+lightning protection circuit
Not direct-connected with radio-frequency module and mainboard, the signal lead of antenna circuit+lightning protection circuit and radio-frequency module is more than by one
The RF coaxial line of 50mm connects, and antenna circuit+lightning protection circuit ground with mainboard is more than the connection of 30mm by a segment length
Line connection.The decaying for the mobile radio signal that this design generates, which can control, to be received in the situation in range, can also be light
Pine is tested by lightning stroke,
It is by antenna circuit+lightning protection circuit and radio-frequency module and mainboard not direct-connected in product design process, antenna electric
The signal lead of road+lightning protection circuit and radio-frequency module is connected by the RF coaxial line that one is more than 50mm, antenna circuit+lightning protection
The ground of circuit with mainboard is connect by the connecting line that a segment length is more than 30mm.The device lightning protection function designed in this way does not have
It is problematic, and mobile radiotelephone signal decaying is also smaller.
The embodiments of the present invention is described in detail above in conjunction with attached drawing, but the utility model is not limited to
Above embodiment, technical field those of ordinary skill within the scope of knowledge, this reality can also not departed from
It is made a variety of changes under the premise of novel objective.
Claims (4)
1. a kind of lightning protection protective system that reduces is to the device of mobile radiotelephone signal transmission attenuation, which is characterized in that described device packet
Mainboard, radio-frequency module and Anneta module are included, Anneta module has antenna circuit and lightning protection circuit and grounding ports and signal end
Mouthful, mainboard has grounding ports and radio-frequency module connectivity port, and radio-frequency module has grounding ports and signal connection end mouth, antenna
The grounding ports of module are connected to lightning protection circuit, and the grounding ports of Anneta module pass through connecting line phase with the grounding ports of mainboard
Even, the grounding ports of radio-frequency module and the grounding ports of mainboard are connected directly, the signal port of Anneta module and radio-frequency module
Signal connection end mouth is connected by RF coaxial line, and the signal for the signal port and radio-frequency module for connecting Anneta module connects
Connect connection wire length of the RF coaxial line of port than connecting the grounding ports of Anneta module and the grounding ports of mainboard.
2. reducing lightning protection protective system as described in claim 1 to the device of mobile radiotelephone signal transmission attenuation, feature exists
In the connecting line for connecting the grounding ports of Anneta module and the grounding ports of mainboard is the PCB trace on mainboard.
3. reducing lightning protection protective system as claimed in claim 2 to the device of mobile radiotelephone signal transmission attenuation, feature exists
In the length for connecting the connecting line of the grounding ports of Anneta module and the grounding ports of mainboard is at least 30mm.
4. reducing lightning protection protective system as described in claim 1 to the device of mobile radiotelephone signal transmission attenuation, feature exists
In the length for connecting the RF coaxial line of the signal port of Anneta module and the signal connection end mouth of radio-frequency module is at least
50mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820258402.5U CN208337551U (en) | 2018-02-09 | 2018-02-09 | A kind of lightning protection protective system that reduces is to the device of mobile radiotelephone signal transmission attenuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820258402.5U CN208337551U (en) | 2018-02-09 | 2018-02-09 | A kind of lightning protection protective system that reduces is to the device of mobile radiotelephone signal transmission attenuation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208337551U true CN208337551U (en) | 2019-01-04 |
Family
ID=64782455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820258402.5U Active CN208337551U (en) | 2018-02-09 | 2018-02-09 | A kind of lightning protection protective system that reduces is to the device of mobile radiotelephone signal transmission attenuation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208337551U (en) |
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2018
- 2018-02-09 CN CN201820258402.5U patent/CN208337551U/en active Active
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