CN219351734U - Radio frequency device - Google Patents
Radio frequency device Download PDFInfo
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- CN219351734U CN219351734U CN202223325776.XU CN202223325776U CN219351734U CN 219351734 U CN219351734 U CN 219351734U CN 202223325776 U CN202223325776 U CN 202223325776U CN 219351734 U CN219351734 U CN 219351734U
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Abstract
The utility model discloses a radio frequency device, comprising: the circuit board, the Wi-Fi chip, the pi-type circuit, the radio frequency interface extension line and the antenna interface; the Wi-Fi chip and the pi-type circuit are positioned on the circuit board, and a first end of the pi-type circuit is connected with a radio frequency interface of the Wi-Fi chip; one end of the radio frequency interface extension line is connected with the second end of the pi-type circuit, and the other end of the radio frequency interface extension line is connected to the antenna interface. The radio frequency device provided by the embodiment of the utility model can solve the problem that Wi-Fi chips are abnormal due to charge accumulation generated by the radio frequency interface and the antenna.
Description
Technical Field
The utility model relates to the technical field of hardware circuits, in particular to a radio frequency device.
Background
In the application of the radio frequency device, the antenna interface is connected to the outside of the shell through a connecting wire, and is exposed to the influence of static electricity, the static electricity can be released on the antenna interface, and as the internal antenna wire is a net-shaped shielding wire and the internal resistance is large, the static electricity can not be smoothly discharged, electric charge accumulation is formed, a magnetic field is generated and induced on the radio frequency interface, the radio frequency interface can generate larger energy to impact a Wi-Fi chip, and the inside of the Wi-Fi chip is difficult to achieve high withstand voltage due to high frequency, so that the chip is abnormal.
Disclosure of Invention
The utility model provides a radio frequency device which is used for solving the problem that a Wi-Fi chip is abnormal due to charge accumulation generated by a radio frequency interface and an antenna.
According to an aspect of the present utility model, there is provided a radio frequency apparatus comprising: the circuit board, the Wi-Fi chip, the pi-type circuit, the radio frequency interface extension line and the antenna interface;
the Wi-Fi chip and the pi-type circuit are positioned on the circuit board, and a first end of the pi-type circuit is connected with a radio frequency interface of the Wi-Fi chip;
one end of the radio frequency interface extension line is connected with the second end of the pi-type circuit, and the other end of the radio frequency interface extension line is connected to the antenna interface.
Optionally, the radio frequency device further includes a bleed-off connection line, one end of the bleed-off connection line is connected to the antenna interface, and the other end of the bleed-off connection line is connected to the ground end of the circuit board.
Optionally, the pi-type circuit includes: a first resistor, a first capacitor and a second capacitor;
one end of the first resistor is defined as a first end of the pi-type circuit, and the other end of the first resistor is defined as a second end of the pi-type circuit;
one end of the first capacitor is connected with the first end of the pi-type circuit, and the other end of the first capacitor is connected with the grounding end of the circuit board;
one end of the second capacitor is connected with the second end of the pi-type circuit, and the other end of the second capacitor is connected with the grounding end of the circuit board.
Optionally, the pi-type circuit includes: a first resistor, a first diode and a second diode;
one end of the first resistor is defined as a first end of the pi-type circuit, and the other end of the first resistor is defined as a second end of the pi-type circuit;
one end of the first diode is connected with the first end of the pi-type circuit, and the other end of the first diode is connected with the grounding end of the circuit board;
one end of the second diode is connected with the second end of the pi-shaped circuit, and the other end of the second diode is connected with the grounding end of the circuit board.
Optionally, the pi-type circuit includes: a first capacitor, a second capacitor, and a third capacitor;
one end of the third capacitor is defined as a first end of the pi-type circuit, and the other end of the third capacitor is defined as a second end of the pi-type circuit;
one end of the first capacitor is connected with the first end of the pi-type circuit, and the other end of the first capacitor is connected with the grounding end of the circuit board;
one end of the second capacitor is connected with the second end of the pi-shaped circuit, and the other end of the second capacitor is connected with the grounding end of the circuit board.
Optionally, the pi-type circuit includes: a third capacitor, a first diode and a second diode;
one end of the third capacitor is defined as a first end of the pi-type circuit, and the other end of the third capacitor is defined as a second end of the pi-type circuit;
one end of the first diode is connected with the first end of the pi-type circuit, and the other end of the first diode is connected with the grounding end of the circuit board;
one end of the second diode is connected with the second end of the pi-shaped circuit, and the other end of the second diode is connected with the grounding end of the circuit board.
Optionally, the first diode and the second diode are TVS transistors.
Optionally, the capacitance value of the third capacitor is 10uf.
Optionally, the radio frequency device further includes a plastic housing, and the circuit board and the antenna interface are fixed on the plastic housing;
the two ends of the discharging connecting wire comprise conducting rings, the conducting rings at one end of the discharging connecting wire are sleeved with the antenna interface and fixedly connected through nuts, and the conducting rings at the other end of the discharging connecting wire are fixed to the grounding end of the main board through bolts.
Optionally, the radio frequency device further comprises an antenna, one end of the antenna is connected to the antenna interface, and the other end of the antenna is suspended.
An embodiment of the present utility model provides a radio frequency device, which is characterized by including: the circuit board, the Wi-Fi chip, the pi-type circuit, the radio frequency interface extension line and the antenna interface; the Wi-Fi chip and the pi-type circuit are positioned on the circuit board, and a first end of the pi-type circuit is connected with a radio frequency interface of the Wi-Fi chip; one end of the radio frequency interface extension line is connected with the second end of the pi-shaped circuit, and the other end of the radio frequency interface extension line is connected to the antenna interface. The problem that the Wi-Fi chip is abnormal due to charge accumulation generated by the radio frequency interface and the antenna is solved, and static electricity of 0.5kV is problematic, so that static electricity of +/-6 kV can be stably passed after the method is used.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the utility model or to delineate the scope of the utility model. Other features of the present utility model will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a radio frequency device according to a first embodiment of the present utility model;
FIG. 2 is a pi-type circuit according to a first embodiment of the present utility model;
FIG. 3 is another pi-type circuit provided in accordance with a second embodiment of the present utility model;
FIG. 4 is another pi-type circuit provided in accordance with a third embodiment of the present utility model;
FIG. 5 is another pi-type circuit provided in accordance with a fourth embodiment of the present utility model;
fig. 6 is a schematic structural diagram of another rf device according to a fifth embodiment of the utility model.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a radio frequency device according to a first embodiment of the present utility model, referring to fig. 1, the radio frequency device of the present embodiment includes: circuit board 100, wi-Fi chip 110, pi-type circuit 120, radio frequency interface extension 130, and antenna interface 140.
The Wi-Fi chip 110 and the pi-type circuit 120 are located on the circuit board 100, and a first end A of the pi-type circuit 120 is connected with a radio frequency interface of the Wi-Fi chip 110.
One end of the RF interface extension 130 is connected to the second end B of the pi-type circuit 120, and the other end of the RF interface extension 130 is connected to the antenna interface 140.
With continued reference to fig. 1, the radio frequency device further includes a drain connection line 150, one end of the drain connection line 150 is connected to the antenna interface 140, and the other end of the drain connection line 150 is connected to the ground terminal of the circuit board 100.
In the embodiment of the utility model, the impedance of the radio frequency interface extension line 130 needs to be ensured and can not be changed randomly, so that the discharge connection line 150 is added to increase the charge release, so that the charge is released to the grounding end of the circuit board 100 as soon as possible, and the problem that the voltage rise is caused by too fast charge accumulation and crosstalk affects the radio frequency interface is avoided.
Fig. 2 is a pi-type circuit according to a first embodiment of the present utility model, which is applied to the rf device in fig. 1, and referring to fig. 2, the pi-type circuit 120 includes: a first resistor L1, a first capacitor C1 and a second capacitor C2.
One end of the first resistor L1 is defined as a first end a of the pi-type circuit 120, and the other end of the first resistor L1 is defined as a second end B of the pi-type circuit 120.
One end of the first capacitor C1 is connected to the first end a of the pi-type circuit 120, and the other end of the first capacitor C1 is connected to the ground terminal of the circuit board 100.
One end of the second capacitor C2 is connected to the second end B of the pi-type circuit 120, and the other end of the second capacitor C2 is connected to the ground terminal of the circuit board 100.
The embodiment of the utility model provides a radio frequency device, which comprises: the circuit board, the Wi-Fi chip, the pi-type circuit, the radio frequency interface extension line and the antenna interface; the Wi-Fi chip and the pi-type circuit are positioned on the circuit board, and a first end A of the pi-type circuit is connected with a radio frequency interface of the Wi-Fi chip; one end of the radio frequency interface extension line is connected with the second end B of the pi-shaped circuit, and the other end of one end of the radio frequency interface extension line is connected to the antenna interface. The problem that the Wi-Fi chip is abnormal due to charge accumulation generated by the radio frequency interface and the antenna is solved, and static electricity of 0.5kV is problematic, so that static electricity of +/-6 kV can be stably passed after the method is used.
Example two
Fig. 3 is a schematic diagram of another pi-type circuit according to an embodiment of the present utility model, which is applied to the rf device of fig. 1 according to an embodiment of the present utility model, referring to fig. 3, a pi-type circuit 120 includes: a first resistor L1, a first diode D1, and a second diode D2.
One end of the first resistor L1 is defined as a first end a of the pi-type circuit 120, and the other end of the first resistor L1 is defined as a second end B of the pi-type circuit 120.
One end of the first diode D1 is connected to the first end a of the pi-type circuit 120, and the other end of the first diode D1 is connected to the ground terminal of the circuit board 100.
One end of the second diode D2 is connected to the second end B of the pi-type circuit 120, and the other end of the second diode D2 is connected to the ground terminal of the circuit board 100.
The first diode D1 and the second diode D2 are TVS transistors.
In the embodiment of the present utility model, the pi-type circuit 120 is provided with a first diode D1 and a second diode D2, which are grounded, and the first diode D1 and the second diode D2 are TVS diodes for absorbing electrostatic energy.
Example III
Fig. 4 is a schematic diagram of another pi-type circuit according to an embodiment of the present utility model, which is applied to the rf device of fig. 1 according to an embodiment of the present utility model, referring to fig. 4, a pi-type circuit 120 includes: a first capacitor C1, a second capacitor C2 and a third capacitor C3.
One end of the third capacitor C3 is defined as a first end a of the pi-type circuit 120, and the other end of the third capacitor C3 is defined as a second end B of the pi-type circuit 120.
One end of the first capacitor C1 is connected to the first end a of the pi-type circuit 120, and the other end of the first capacitor C2 is connected to the ground terminal of the circuit board 100.
One end of the second capacitor is connected to the second end B of the pi-type circuit, and the other end of the second capacitor is connected to the ground terminal of the circuit board 100.
Wherein, the capacitance value of the third capacitor C3 is 10uf.
The pi-type circuit 120 in the embodiment of the present utility model is different from the pi-type circuit 120 in fig. 2 in that the first resistor L1 is changed to the third capacitor C3 with a capacitance of 10uf for isolation, and for the 2.4G signal, the first resistor L1 is changed to the third capacitor C3 with almost no attenuation to the original radio frequency signal.
Example IV
Fig. 5 is another pi-type circuit provided in an embodiment of the present utility model, which is applied to the rf device in fig. 1 in an embodiment of the present utility model, referring to fig. 5, pi-type circuit 120 includes: a third capacitor C3, a first diode D1 and a second diode D2.
One end of the third capacitor C3 is defined as a first end a of the pi-type circuit 120, and the other end of the third capacitor C3 is defined as a second end B of the pi-type circuit 120.
One end of the first diode D1 is connected to the first end a of the pi-type circuit 120, and the other end of the first diode D1 is connected to the ground terminal of the circuit board 100.
One end of the second diode D2 is connected to the second end B of the pi-type circuit 120, and the other end of the second diode D2 is connected to the ground terminal of the circuit board 100.
The capacitance value of the third capacitor C3 is 10uf, and the first diode D1 and the second diode D2 are TVS tubes.
In the embodiment of the present utility model, the pi-type circuit 120 is provided with a first diode D1 and a second diode D2, which are grounded, and the first diode D1 and the second diode D2 are TVS diodes for absorbing electrostatic energy.
Example five
Fig. 6 is a schematic diagram of a radio frequency device according to an embodiment of the present utility model, which is applied to the radio frequency device according to the first and second embodiments of the present utility model. Referring to fig. 6, the radio frequency device in the embodiment of the present utility model further includes a plastic housing 200, and the circuit board 100 and the antenna interface 140 are fixed to the plastic housing 200.
Optionally, both ends of the drain connection wire 150 include conductive rings, the conductive ring at one end of the drain connection wire 150 is sleeved with the antenna interface 140 and fixedly connected through a nut, and the conductive ring at the other end of the drain connection wire 150 is fixed to the grounding end of the motherboard 100 through a bolt.
Wherein the conductive ring, nut and bolt are not shown in the figures.
Optionally, with continued reference to fig. 6, the radio frequency device in the embodiment of the present utility model further includes an antenna 300, one end of the antenna 300 is connected to the antenna interface 140, and the other end of the antenna 300 is suspended.
The radio frequency device in the embodiment of the utility model comprises the radio frequency device described in any embodiment, and has the same functions as those of the embodiment.
The above embodiments do not limit the scope of the present utility model. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.
Claims (12)
1. A radio frequency device, comprising: the circuit board, the Wi-Fi chip, the pi-type circuit, the radio frequency interface extension line and the antenna interface;
the Wi-Fi chip and the pi-type circuit are positioned on the circuit board, and a first end of the pi-type circuit is connected with a radio frequency interface of the Wi-Fi chip;
one end of the radio frequency interface extension line is connected with the second end of the pi-type circuit, and the other end of the radio frequency interface extension line is connected to the antenna interface.
2. The radio frequency device of claim 1, further comprising a bleed connection line having one end connected to the antenna interface and another end connected to a ground of the circuit board.
3. The radio frequency device according to claim 1, wherein the pi-type circuit comprises: a first resistor, a first capacitor and a second capacitor;
one end of the first resistor is defined as a first end of the pi-type circuit, and the other end of the first resistor is defined as a second end of the pi-type circuit;
one end of the first capacitor is connected with the first end of the pi-type circuit, and the other end of the first capacitor is connected with the grounding end of the circuit board;
one end of the second capacitor is connected with the second end of the pi-type circuit, and the other end of the second capacitor is connected with the grounding end of the circuit board.
4. The radio frequency device according to claim 1, wherein the pi-type circuit comprises: a first resistor, a first diode and a second diode;
one end of the first resistor is defined as a first end of the pi-type circuit, and the other end of the first resistor is defined as a second end of the pi-type circuit; one end of the first diode is connected with the first end of the pi-type circuit, and the other end of the first diode is connected with the grounding end of the circuit board;
one end of the second diode is connected with the second end of the pi-shaped circuit, and the other end of the second diode is connected with the grounding end of the circuit board.
5. The radio frequency device according to claim 1, wherein the pi-type circuit comprises: a first capacitor, a second capacitor, and a third capacitor;
one end of the third capacitor is defined as a first end of the pi-type circuit, and the other end of the third capacitor is defined as a second end of the pi-type circuit;
one end of the first capacitor is connected with the first end of the pi-type circuit, and the other end of the first capacitor is connected with the grounding end of the circuit board;
one end of the second capacitor is connected with the second end of the pi-type circuit, and the other end of the second capacitor is connected with the grounding end of the circuit board.
6. The radio frequency device according to claim 1, wherein the pi-type circuit comprises: a third capacitor, a first diode and a second diode;
one end of the third capacitor is defined as a first end of the pi-type circuit, and the other end of the third capacitor is defined as a second end of the pi-type circuit;
one end of the first diode is connected with the first end of the pi-type circuit, and the other end of the first diode is connected with the grounding end of the circuit board;
one end of the second diode is connected with the second end of the pi-shaped circuit, and the other end of the second diode is connected with the grounding end of the circuit board.
7. The radio frequency device according to claim 4, wherein the first diode and the second diode are TVS tubes.
8. The radio frequency device according to claim 6, wherein the first diode and the second diode are TVS tubes.
9. The radio frequency device according to claim 5, wherein the capacitance of the third capacitor is 10uf.
10. The radio frequency device according to claim 6, wherein the capacitance of the third capacitor is 10uf.
11. The radio frequency device of claim 2, further comprising a plastic housing, the circuit board and the antenna interface being secured to the plastic housing;
the two ends of the discharging connecting wire comprise conducting rings, the conducting rings at one end of the discharging connecting wire are sleeved with the antenna interface and fixedly connected through nuts, and the conducting rings at the other end of the discharging connecting wire are fixed to the grounding end of the main board through bolts.
12. The radio frequency device according to any one of claims 1-11, further comprising an antenna, wherein one end of the antenna is connected to the antenna interface, and wherein the other end of the antenna is suspended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223325776.XU CN219351734U (en) | 2022-12-09 | 2022-12-09 | Radio frequency device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223325776.XU CN219351734U (en) | 2022-12-09 | 2022-12-09 | Radio frequency device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219351734U true CN219351734U (en) | 2023-07-14 |
Family
ID=87106772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223325776.XU Active CN219351734U (en) | 2022-12-09 | 2022-12-09 | Radio frequency device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219351734U (en) |
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2022
- 2022-12-09 CN CN202223325776.XU patent/CN219351734U/en active Active
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