CN203537428U - USB interface outer shell switching circuit in equipment with antenna - Google Patents
USB interface outer shell switching circuit in equipment with antenna Download PDFInfo
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- CN203537428U CN203537428U CN201320568907.9U CN201320568907U CN203537428U CN 203537428 U CN203537428 U CN 203537428U CN 201320568907 U CN201320568907 U CN 201320568907U CN 203537428 U CN203537428 U CN 203537428U
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Abstract
The utility model relates to a USB interface outer shell switching circuit in equipment with an antenna, particularly relates to a USB interface outer shell switching circuit, and aims at achieving the purposes that a USB interface of the equipment with the antenna can meet different kinds of requirements for the antenna performance, power utilization safety and shield interference. The USB interface outer shell switching circuit in the equipment with the antenna is characterized by comprising a switch, wherein the first end of the switch is connected with a USB interface outer shell, and the second end of the switch is triggered to be switched to an earth-free circuit or an alternating current shielding circuit. The USB interface outer shell switching circuit in the equipment with the antenna has the advantages that according to the using situation of the USB interface, the second end of the switch is controlled to be connected with the earth-free circuit or the alternating current shielding circuit, and therefore the USB interface of the equipment with the antenna can meet different kinds of requirements for the antenna performance, the power utilization safety and shield interference.
Description
Technical field
The invention relates to the USB interface shell commutation circuit in the equipment of antenna, is specifically related to USB interface shell commutation circuit.
Background technology
Mobile phone is as a kind of equipment with antenna, and its USB interface outer cover metal has absorption to the electromagnetic wave of antenna, and this can affect antenna performance, and existing solution is to make USB interface shell unsettled, allows USB interface shell become a part for antenna.
Smart mobile phone generally charges by USB interface, some smart mobile phone charging currents are higher, have the risk of the VDD-to-VSS line short circuit of USB interface, existing solution is to make USB interface shell earth-free, and making USB interface shell unsettled is exactly earth-free wherein a kind of structure.
Therefore, for antenna performance and Electrical Safety, preferably allow USB interface shell unsettled earth-free, yet, the earth-free meeting of USB interface shell brings other problem, for example, when USB interface high rate data transmission data, USB interface place impedance discontinuity, transfer of data is disturbed by aerial radiation easily, existing solution is that the design of mobile phone PCB is revised, and this has just not only increased production cost, has also incured loss through delay the time of launch.
Summary of the invention
The object of the invention is to allow with the USB interface in the equipment of antenna, can take into account antenna performance, Electrical Safety and shielding and disturb this several different needs.
The invention provides with the USB interface shell commutation circuit in the equipment of antenna, it is characterized in that, comprises switch, and switch first end connects USB interface shell, and the second end is subject to triggering to switch to earth-free or interchange screened circuit.
Beneficial effect: according to the behaviour in service of USB interface, control switch the second end switches to earth-free or exchanges screened circuit, just can take into account antenna performance, Electrical Safety and shielding and disturb this several different needs.
Accompanying drawing explanation
Utilize accompanying drawing to be described further the invention, but the embodiment in accompanying drawing does not form any restriction to the invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is the circuit diagram with the USB interface shell commutation circuit in the equipment of antenna.
Embodiment
With the following Examples the invention is further described.
With the equipment of antenna, take smart mobile phone as example, its USB interface shell commutation circuit is as Fig. 1, switch is specially switching circuit, switch first end connects USB interface shell, the second end is subject to trigger and switches between three circuit: article one circuit has inductance L 1602 and capacitor C 1602, and inductance L 1602 and capacitor C 1602 form lc circuit; Second circuit has inductance L 1601; Article three, circuit, by switch the second end through capacitor C 1601 ground connection, is equivalent to exchange ground connection.It is unsettled that switch the second end also be can switch to by triggering.Central processing unit is according to the behaviour in service of USB interface, and trigger switch the second end switches, and detailed description specifically sees below.
If A. USB interface there is not peripheral hardware access, with regard to trigger switch the second end, switch to unsettledly, allow USB interface shell become a part for antenna, in order to avoid affect antenna performance.
If B. USB interface has peripheral hardware access but does not carry out transfer of data, for example USB interface is used to charging, with regard to trigger switch, the second end-grain cutting is changed to above-mentioned article one circuit or second circuit, allows the lc circuit that consists of inductance L 1602 and capacitor C 1602 or allow inductance L 1601 as frequency deviation correction circuit, the frequency deviation of antenna for mobile phone be revised.
Above A and B belong to the situation that USB interface is not transmitted data, and the earth-free switching of its trigger switch two port, has taken into account antenna performance and Electrical Safety.
If C. USB interface has transmission data, with regard to trigger switch, the second end-grain cutting is changed to above-mentioned the 3rd circuit, allows USB interface shell exchange ground connection.Article three, circuit is as exchanging screened circuit, and screened shielded antanna radiation, makes transfer of data interference-free.Exchanging screened circuit can be also the direct ground connection of switch the second end, so also can screened shielded antanna radiated interference; Exchange screened circuit and can also be switch the second end through a LC resonant circuit ground connection, LC resonance frequency is consistent with the radiation frequency of antenna, and the radiation frequency signal of antenna is caused, so also can screened shielded antanna radiated interference.
So far visible, this USB interface shell commutation circuit has been taken into account antenna performance, Electrical Safety and shielding and has been disturbed this several different needs.
Finally should be noted that; above embodiment is only in order to illustrate the technical scheme of the invention; but not restriction to the invention protection range; although the invention has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical scheme of the invention, and not depart from essence and the scope of the invention technical scheme.
Claims (10)
1. with the USB interface shell commutation circuit in the equipment of antenna, it is characterized in that, comprise switch, switch first end connects USB interface shell, and the second end is subject to triggering to switch to earth-free or interchange screened circuit.
2. USB interface shell commutation circuit according to claim 1, is characterized in that, the earth-free switching of switch two port is triggered by the situation that USB interface is not transmitted data.
3. USB interface shell commutation circuit according to claim 2, is characterized in that, earth-free concrete finger is for revising the frequency deviation correction circuit of antenna frequency deviation, and USB interface is not transmitted data and specifically referred to that USB interface has peripheral hardware access but do not carry out transfer of data.
4. USB interface shell commutation circuit according to claim 3, is characterized in that, frequency deviation correction circuit comprises inductance.
5. USB interface shell commutation circuit according to claim 4, is characterized in that, frequency deviation correction circuit also comprises electric capacity (C1602), forms lc circuit with described inductance.
6. USB interface shell commutation circuit according to claim 3, is characterized in that, USB interface has peripheral hardware access but do not carry out transfer of data and specifically refers to that USB interface is used to charging.
7. USB interface shell commutation circuit according to claim 2, is characterized in that, earth-free concrete finger is unsettled, and USB interface is not transmitted data and specifically referred to that USB interface there is not peripheral hardware access.
8. USB interface shell commutation circuit according to claim 1, is characterized in that, the switching that switch two port exchanges screened circuit is subject to USB interface to have the situation of transmission data to trigger.
9. USB interface shell commutation circuit according to claim 8, is characterized in that, described interchange screened circuit is specially switch the second end through electric capacity (C1601) ground connection or direct ground connection.
10. USB interface shell commutation circuit according to claim 8, is characterized in that, described interchange screened circuit is specially switch the second end through LC resonant circuit ground connection, and LC resonance frequency is consistent with the radiation frequency of antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320568907.9U CN203537428U (en) | 2013-09-13 | 2013-09-13 | USB interface outer shell switching circuit in equipment with antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320568907.9U CN203537428U (en) | 2013-09-13 | 2013-09-13 | USB interface outer shell switching circuit in equipment with antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203537428U true CN203537428U (en) | 2014-04-09 |
Family
ID=50423598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320568907.9U Withdrawn - After Issue CN203537428U (en) | 2013-09-13 | 2013-09-13 | USB interface outer shell switching circuit in equipment with antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203537428U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516842A (en) * | 2013-09-13 | 2014-01-15 | 广东欧珀移动通信有限公司 | USB interface outer shell switching circuit in equipment with antenna |
| WO2015117359A1 (en) * | 2014-07-21 | 2015-08-13 | 中兴通讯股份有限公司 | Wireless fidelity (wifi) auxiliary antenna |
| CN105099491A (en) * | 2015-06-12 | 2015-11-25 | 联想(北京)有限公司 | Control method and electronic equipment |
| WO2020000371A1 (en) * | 2018-06-29 | 2020-01-02 | 华为技术有限公司 | Usb seat operating circuit and terminal |
-
2013
- 2013-09-13 CN CN201320568907.9U patent/CN203537428U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516842A (en) * | 2013-09-13 | 2014-01-15 | 广东欧珀移动通信有限公司 | USB interface outer shell switching circuit in equipment with antenna |
| CN103516842B (en) * | 2013-09-13 | 2016-05-11 | 广东欧珀移动通信有限公司 | USB interface shell commutation circuit in equipment with antenna |
| WO2015117359A1 (en) * | 2014-07-21 | 2015-08-13 | 中兴通讯股份有限公司 | Wireless fidelity (wifi) auxiliary antenna |
| CN105099491A (en) * | 2015-06-12 | 2015-11-25 | 联想(北京)有限公司 | Control method and electronic equipment |
| CN105099491B (en) * | 2015-06-12 | 2018-03-23 | 联想(北京)有限公司 | Control method and electronic equipment |
| WO2020000371A1 (en) * | 2018-06-29 | 2020-01-02 | 华为技术有限公司 | Usb seat operating circuit and terminal |
| CN112313928A (en) * | 2018-06-29 | 2021-02-02 | 华为技术有限公司 | USB seat operation circuit and terminal |
| CN112313928B (en) * | 2018-06-29 | 2024-04-05 | 荣耀终端有限公司 | USB seat operation circuit and terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140409 Effective date of abandoning: 20160511 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |