CN106547717A - Shell circuit, micro USB seats operation circuit and terminal - Google Patents
Shell circuit, micro USB seats operation circuit and terminal Download PDFInfo
- Publication number
- CN106547717A CN106547717A CN201610979346.XA CN201610979346A CN106547717A CN 106547717 A CN106547717 A CN 106547717A CN 201610979346 A CN201610979346 A CN 201610979346A CN 106547717 A CN106547717 A CN 106547717A
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- Prior art keywords
- usb
- circuit
- shell
- micro
- seats
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4086—Bus impedance matching, e.g. termination
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The present invention proposes a kind of shell circuit, a kind of micro USB seats operation circuit and a kind of terminal, wherein, shell circuit includes：Micro USB seats, the micro USB seat tools have several grounding pins；Grounded inductor, one end ground connection of the grounded inductor, the other end are connected to described several grounding pins.Technical scheme, a grounded inductor is additionally arranged between the grounding pin and earth terminal of micro USB seats, due to impedance of the grounded inductor to firing frequency frequency band it is very big, in this rf frequency section communication of 850M 1900M, the shell of micro USB seats 102 does not interfere with antenna performance over the ground equivalent to open circuit；And when this frequency band of USB transmission communicates, grounded inductor impedance very little, the shell of micro USB seats are smoothly grounded, and usb signal would not be by Radio frequency interference, so as to play the shielding action to usb signal, it is to avoid the generation of situations such as bit error rate is too high and USB data transmission is interrupted.
Description
【Technical field】
The present invention relates to field of circuit technology, more particularly to a kind of a kind of shell circuit, micro-USB seats operation circuit and
A kind of terminal.
【Background technology】
Micro USB are a portable versions of USB 2.0 (Universal Serial Bus2.0, USB (universal serial bus))
This, which has the advantages that, and interface is little, the times of capable of being inserted and pulled out is more.At present, the micro-USB seats in the terminal such as mobile phone are put below antenna
After putting, the shell of micro-USB seats can not be directly grounded, and otherwise, can greatly affect the performance of antenna.
But, the shell of micro-USB seats is earth-free just cannot to play shielding action to usb signal, so, penetrated
During frequency high power communication, usb signal can be caused the bit error rate too high by Radio frequency interference, be easily caused USB data transmission interruption.
Therefore, how while antenna performance is ensured to avoid USB data transmission from interrupting, become skill urgently to be resolved hurrily at present
Art problem.
【The content of the invention】
Embodiments provide a kind of shell circuit, a kind of micro-USB seats operation circuit and a kind of terminal to be intended to
Solve to affect when the shell of micro-USB seats in correlation technique is directly grounded antenna performance, it is earth-free when cause USB data transmission
A kind of technical problem of interruption, using the teaching of the invention it is possible to provide effectively connection circuit, realizes neither affecting antenna performance to be avoided that usb data again
The problem of Transmission.
In a first aspect, a kind of shell circuit is embodiments provided, including：Micro-USB seats, the micro-
USB seat tools have several grounding pins；Grounded inductor, one end ground connection of the grounded inductor, the other end is connected to described some
Individual grounding pin.
In the above embodiment of the present invention, alternatively, the quantity of several grounding pins is four.
In the above embodiment of the present invention, alternatively, the inductance value of the grounded inductor is more than or equal to 100nH, and little
In or be equal to 120nH.
Second aspect, appoints in embodiments providing a kind of operation of micro-USB seats circuit, including above-described embodiment
Shell circuit described in one, therefore, micro-USB seats operation circuit have and above-described embodiment any one of it is outer
Shell circuit identical technique effect.
The third aspect, embodiments provides a kind of terminal, including the shell any one of above-described embodiment
Circuit, therefore, the terminal has and the shell circuit identical technique effect any one of above-described embodiment.
By above technical scheme, when being directly grounded for the shell of the micro-USB seats in correlation technique, antenna is affected
Performance, it is earth-free when cause USB data transmission to be interrupted technical problem, using the teaching of the invention it is possible to provide a kind of effectively connection circuit, its
A grounded inductor is additionally arranged between the grounding pin and earth terminal of micro-USB seats, grounded inductor is to firing frequency frequency band
Impedance is very big, when 850M-1900M this rf frequency section communicates, the shell of micro-USB seats 102 over the ground equivalent to open circuit,
Antenna performance is not interfered with；And when this frequency band of USB transmission communicates, grounded inductor impedance very little, micro-USB seats
Shell is smoothly grounded, and usb signal would not be by Radio frequency interference, so as to play the shielding action to usb signal, it is to avoid bit error rate mistake
The generation of situations such as high and USB data transmission is interrupted.
【Description of the drawings】
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by to be used attached needed for embodiment
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this area
For those of ordinary skill, without having to pay creative labor, can be with other attached according to these accompanying drawings acquisitions
Figure.
Fig. 1 shows the circuit diagram of shell circuit according to an embodiment of the invention；
Fig. 2 shows that micro-USB seats according to an embodiment of the invention run the circuit diagram of circuit；
Fig. 3 shows the block diagram of terminal according to an embodiment of the invention.
【Specific embodiment】
In order to be better understood from technical scheme, below in conjunction with the accompanying drawings the embodiment of the present invention is retouched in detail
State.
It will be appreciated that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
Its embodiment, belongs to the scope of protection of the invention.
The term for using in embodiments of the present invention is the purpose only merely for description specific embodiment, and is not intended to be limiting
The present invention." one kind ", " described " and " being somebody's turn to do " of singulative used in the embodiment of the present invention and appended claims
It is also intended to include most forms, unless context clearly shows that other implications.
Fig. 1 shows the circuit diagram of shell circuit according to an embodiment of the invention.
As shown in figure 1, the shell circuit 100 of one embodiment of the present of invention, including：Micro-USB seats 102 and ground connection electricity
Sense 104.
Wherein, one end that micro-USB seats 102 have several grounding pins, grounded inductor 104 is grounded, and the other end connects
Several grounding pins are connected to, in other words, that is, are set up between the grounding pin and earth terminal of micro-USB seats 102
One grounded inductor 104.
So, the impedance due to grounded inductor 104 to firing frequency frequency band is very big, in this rf frequency of 850M-1900M
During Duan Tongxin, the shell of micro-USB seats 102 does not interfere with antenna performance over the ground equivalent to open circuit；And USB transmission this
When individual frequency band communicates, 104 impedance very little of grounded inductor, the shell of micro-USB seats 102 are smoothly grounded, and usb signal would not
By Radio frequency interference, so as to play the shielding action to usb signal, it is to avoid situations such as bit error rate is too high and USB data transmission is interrupted
Generation.
Generally speaking, the embodiment of the present invention make use of inductance in the different principle of different frequency sections impedance operator, due to
Impedance of the grounded inductor 104 in the shell circuit of micro-USB seats 102 in different frequency sections over the ground is different, micro-USB
When seat 102 is put below the antenna, antenna performance is neither affected, can solve radio frequency high-power again causes USB data transmission to be interrupted
Problem.
In the above embodiment of the present invention, alternatively, the quantity of several grounding pins is four.
In FIG, model MCB04-5K1400B-DH of micro-USB seats 102, its have pin6, pin7, pin8 and
Tetra- GND grounding pins of pin9, this four grounded pin are connected on the ground by grounded inductor 104 after connecting together, wherein, ground connection
Inductance 104 can be wire-wound inductor, or other kinds of inductance in addition as needed, can be according to the reality of circuit
Border needs to be selected.
So, four grounded pin is grounded by grounded inductor 104, as grounded inductor 104 is in different frequency sections pair
The impedance on ground is different, when micro-USB seats 102 are put below the antenna, neither affects antenna performance, can solve radio frequency again high
Power causes the problem that USB data transmission is interrupted.
In the above embodiment of the present invention, alternatively, the inductance value of grounded inductor 104 is more than or equal to 100nH, and is less than
Or it is equal to 120nH.
The inductance value of grounded inductor 104 may be at 100nH to 120nH in the range of this, alternatively, it is also possible to according to reality
Circuit requirements, from the inductance of other inductance value.
You need to add is that, the inductance of 100nH is very big to the rf frequency section impedance in more than 900MHz, grounded inductor
, in when 100nH to 120nH is in the range of this, generally, grounded inductor 104 is to 850MHz to 1900MHz for 104 inductance value
In the range of the impedance of rf frequency section it is all very big, therefore, it can be defined as the rf frequency in the range of 850MHz to 1900MHz
Firing frequency frequency, the rf frequency that will be less than 850MHz are defined as low radio frequency frequency.
Certainly, the division of the scope of the scope of firing frequency frequency and low radio frequency frequency is not limited to a kind of above-mentioned situation.
Fig. 2 shows that micro-USB seats according to an embodiment of the invention run the circuit diagram of circuit.
As shown in Fig. 2 micro-USB seats provided in an embodiment of the present invention run circuit 200, including the shell shown in Fig. 1
Circuit 100, therefore, the micro-USB seats operation circuit 200 has and 100 identical technology of the shell circuit effect shown in Fig. 1
Really, will not be described here.
In addition, micro-USB seats operation circuit 200 also include with the pin1 of micro-USB seats 102, pin2, pin3,
The other parts that pin4 with pin5 pins are connected.
Including common mode module, common mode module includes common mode inductance L100, on the one hand for filtering common mode on holding wire
Electromagnetic interference, on the other hand for suppressing itself not send out electromagnetic interference, it is to avoid affect other electricity under same electromagnetic environment
The normal work of sub- equipment, common mode inductance L100 can adopt EXC14CE900U models.
Wherein also include surge protection module, surge protection module has diode T115, within the extremely short time
Conducting shunting, so as to avoid infringement of the surge to loop.
For other components and parts in Fig. 2 will not be described here.
Fig. 3 shows the block diagram of terminal according to an embodiment of the invention.
As shown in figure 3, terminal according to an embodiment of the invention 300, including the shell circuit 100 shown in Fig. 1, because
This, the terminal 300 has and the 100 identical technique effect of shell circuit shown in Fig. 1, will not be described here.
Technical scheme is described in detail above in association with accompanying drawing, by technical scheme, electricity is make use of
Feel in the different principle of different frequency sections impedance operator, as the grounded inductor in the shell circuit of micro-USB seats is in difference
Frequency band impedance over the ground is different, when micro-USB seats are put below the antenna, neither affects antenna performance, and can solve
Radio frequency high-power causes the problem that USB data transmission is interrupted.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
It should be noted that terminal involved in the embodiment of the present invention can include but is not limited to personal computer
(Personal Computer, PC), personal digital assistant (Personal Digital Assistant, PDA), wireless handheld
Equipment, panel computer (Tablet Computer), mobile phone, MP3 player, MP4 players etc..
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements done etc. are should be included within the scope of protection of the invention.
Claims (5)
1. a kind of shell circuit, it is characterised in that include：
Micro-USB seats, the micro-USB seat tools have several grounding pins；
Grounded inductor, one end ground connection of the grounded inductor, the other end are connected to described several grounding pins.
2. shell circuit according to claim 1, it is characterised in that the quantity of several grounding pins is four.
3. shell circuit according to claim 1 and 2, it is characterised in that the inductance value of the grounded inductor is more than or waits
In 100nH, and it is less than or equal to 120nH.
4. a kind of micro-USB seats run circuit, it is characterised in that including shell as claimed any one in claims 1 to 3
Circuit.
5. a kind of terminal, it is characterised in that including shell circuit as claimed any one in claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610979346.XA CN106547717A (en) | 2016-11-08 | 2016-11-08 | Shell circuit, micro USB seats operation circuit and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610979346.XA CN106547717A (en) | 2016-11-08 | 2016-11-08 | Shell circuit, micro USB seats operation circuit and terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106547717A true CN106547717A (en) | 2017-03-29 |
Family
ID=58394285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610979346.XA Pending CN106547717A (en) | 2016-11-08 | 2016-11-08 | Shell circuit, micro USB seats operation circuit and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106547717A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106897241A (en) * | 2016-12-28 | 2017-06-27 | 深圳天珑无线科技有限公司 | A kind of usb circuit and mobile terminal being applied in mobile terminal |
| CN107526702A (en) * | 2017-09-15 | 2017-12-29 | 深圳传音制造有限公司 | A kind of usb circuit of mobile terminal and the mobile terminal with the circuit |
| CN108521035A (en) * | 2018-03-28 | 2018-09-11 | 努比亚技术有限公司 | The connection structure of mobile terminal and its universal serial bus connector |
| CN109639887A (en) * | 2018-11-27 | 2019-04-16 | 维沃移动通信有限公司 | A kind of control method and terminal device |
| CN112313928A (en) * | 2018-06-29 | 2021-02-02 | 华为技术有限公司 | USB seat operation circuit and terminal |
| CN113342592A (en) * | 2020-03-03 | 2021-09-03 | 合肥杰发科技有限公司 | Disconnection detection method, device and medium for hot-plug equipment |
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| CN201359725Y (en) * | 2009-01-21 | 2009-12-09 | 青岛海信移动通信技术股份有限公司 | USB interface circuit and portable hand-held device provided with the circuit |
| CN201947167U (en) * | 2011-02-18 | 2011-08-24 | 深圳精美精科技有限公司 | USB (universal serial bus) power supply circuit |
| CN104135148A (en) * | 2014-07-17 | 2014-11-05 | 青岛歌尔声学科技有限公司 | USB (Universal Serial Bus) interface circuit |
| CN204190612U (en) * | 2014-09-19 | 2015-03-04 | 苏州科利科技发展有限公司 | A kind of usb circuit |
| CN104393867A (en) * | 2014-12-10 | 2015-03-04 | 成都英力拓信息技术有限公司 | Output switch voltage stabilizing circuit for computer USB3.0 interface |
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Patent Citations (5)
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| CN201359725Y (en) * | 2009-01-21 | 2009-12-09 | 青岛海信移动通信技术股份有限公司 | USB interface circuit and portable hand-held device provided with the circuit |
| CN201947167U (en) * | 2011-02-18 | 2011-08-24 | 深圳精美精科技有限公司 | USB (universal serial bus) power supply circuit |
| CN104135148A (en) * | 2014-07-17 | 2014-11-05 | 青岛歌尔声学科技有限公司 | USB (Universal Serial Bus) interface circuit |
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| CN104393867A (en) * | 2014-12-10 | 2015-03-04 | 成都英力拓信息技术有限公司 | Output switch voltage stabilizing circuit for computer USB3.0 interface |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106897241A (en) * | 2016-12-28 | 2017-06-27 | 深圳天珑无线科技有限公司 | A kind of usb circuit and mobile terminal being applied in mobile terminal |
| CN107526702A (en) * | 2017-09-15 | 2017-12-29 | 深圳传音制造有限公司 | A kind of usb circuit of mobile terminal and the mobile terminal with the circuit |
| CN107526702B (en) * | 2017-09-15 | 2023-12-05 | 深圳传音制造有限公司 | USB interface circuit of mobile terminal and mobile terminal with same |
| CN108521035A (en) * | 2018-03-28 | 2018-09-11 | 努比亚技术有限公司 | The connection structure of mobile terminal and its universal serial bus connector |
| 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 |
| CN109639887A (en) * | 2018-11-27 | 2019-04-16 | 维沃移动通信有限公司 | A kind of control method and terminal device |
| CN113342592A (en) * | 2020-03-03 | 2021-09-03 | 合肥杰发科技有限公司 | Disconnection detection method, device and medium for hot-plug equipment |
| CN113342592B (en) * | 2020-03-03 | 2023-08-25 | 合肥杰发科技有限公司 | Disconnection detection method, device and medium of hot plug equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170329 |