CN104852140B - The resonant circuit of the interference between high frequency connectors and antenna can be suppressed - Google Patents
The resonant circuit of the interference between high frequency connectors and antenna can be suppressed Download PDFInfo
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- CN104852140B CN104852140B CN201410051540.2A CN201410051540A CN104852140B CN 104852140 B CN104852140 B CN 104852140B CN 201410051540 A CN201410051540 A CN 201410051540A CN 104852140 B CN104852140 B CN 104852140B
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Abstract
A kind of resonant circuit that can suppress the interference between high frequency connectors and antenna, the circuit board is provided with a circuit layout, one high frequency connectors and an antenna, one end of high frequency connectors and antenna is respectively connecting to one first contact and one second contact of circuit layout, and high frequency connectors are arranged at the side of circuit layout, so that another electronic installation can transmit information by high frequency connectors and electronic installation, antenna can then make electronic installation pass through a preset frequency transmitting/receiving wireless information, it is connected with one the 3rd contact of circuit layout, 3rd contact is arranged at the position between the first contact and the second contact, and the resonant frequency of resonant circuit is close to the transmitting-receiving frequency of antenna.Pass through the resonant circuit being arranged between high frequency connectors and antenna, when another electronic installation transmits information by high frequency connectors and electronic installation, the noise close with antenna frequencies in its caused radiation signal, the normal operation that will be absorbed by resonant circuit without influencing whether antenna.
Description
Technical field
The present invention is a kind of resonant circuit that can suppress the interference between high frequency connectors and antenna, and espespecially one kind is arranged at height
Between frequency connector and antenna, and radiation signal caused by the high frequency connectors can be absorbed, to avoid the influence of noise antenna just
The resonant circuit often operated.
Background technology
With the progress of electronic technology field, the research and development of various electronic installation are invariably towards miniaturization and light-weighted target
Advance, especially various portable electronic devices in recent years（Such as：Mobile phone, personal digital assistant and tablet personal computer etc.）Market it is flourishing
Development, in order to meet carry on convenience, the R＆D direction of these portable electronic devices, be more pushed to it is light, thin, short,
Small is ultimate attainment.At the same time, to meet the needs of people are viewed and admired using these electronic installations or listened to various multimedia messages, respectively
The size of kind digital document capacity or the demand of digital information flow increase all tremendously, therefore, the transmission speed of digital information
When degree also turns into the industry various electronic installation of exploitation with stability, one of important goal pursued.
As foregoing, because the developing direction of various electronic installations increasingly tends to be thinned, therefore, in global design
Not only almost give up the Antenna Design of conventional circumscribed completely, use the Antenna Design of in-building type, and these electronics instead comprehensively
The inner space of device also constantly reduces；On the other hand, to lift the transmission speed of digital information, these electronic installations can match somebody with somebody more
Put USB（Universal Serial Bus, abbreviation USB）Connector, the high-definition multimedia of 3.0 specifications
（High Definition Multimedia Interface, abbreviation HDMI）Interface connector, the connection of DisplayPort interfaces
The high frequency connectors of the quick transmitting digital information of the energy such as device or Thunderbolt interface connectors.Although ultimate attainment pursuit electronics dress
The target of miniaturization is put, makes user facilitate many when carrying these electronic installations really, and connect by using these high frequencies
Device is connect, also makes the efficiency of transmission of digital information obtain really and is lifted tremendously, still, while when pursuing both the above target,
But also the problem of deriving other.
Be applied to the antenna of these electronic installations at present, it is wirelessly transferred by IEEE802.11b/g/n or bluetooth etc. mostly
Agreement transmission digital information, and generally receive and dispatch these digital informations using 2.4GHz radio wave frequency ranges.Past, in wired biography
Under the relatively low situation of defeated connector specification, these connectors caused radiation signal during transmission signal, still not
Cause in influenceing antenna transmitting-receiving digital information, still, nowadays these electronic installations largely use these high frequency connectors, at this
When information is mutually transmitted by high frequency connectors between a little electronic installations, in its caused radiation signal, it will include close
The noise of the antenna transmitting-receiving frequency, and have influence on the stability of antenna transmitting-receiving digital information.In addition, with these electronic installations
Miniaturization, it is clear that be difficult to by way of " increasing the distance between these high frequency connectors and antenna ", effectively avoid noise from doing
Disturb the running of antenna.Foregoing to solve the problems, such as, part dealer sets shield shell in high frequency connectors, or in high frequency connectors
Signal wire set shield shell, to stop that these high frequency connectors are produced during transmission signal by means of shield shell
Raw noise；In addition, still there is part dealer to install absorbing material additional on the signal wire of high frequency connectors, to which absorbing material can be borrowed
Absorb these high frequency connectors caused noise during transmission signal.Although the foregoing practice is really to aforementioned noise
The problem of interference, provides a solution, still, either sets shield shell or installs the mode of absorbing material additional, all can
The production cost of these electronic installations is caused to be lifted, it is therefore, still difficult to be referred to as preferable solution.
Understand in summary, the design of existing electronic installation, it tends to be difficult to take into account electronic device miniaturization and transmitted with signal
The target of speed lifting, though there is part dealer to attempt solve this problem, the scheme proposed will cause carrying for production cost
Rise, therefore, how by relatively low cost, effectively suppress the interference between high frequency connectors and antenna, become the present invention
The important topic of desired most ardently solution.
The content of the invention
There is the problem of foregoing in design in view of existing electronic installation, inventor is to serve related production all the year round according to it
Industry experience, make great efforts research and experiment by permanent, one kind that the present invention is designed in exploitation finally can suppress high frequency connectors and day
The resonant circuit of interference between line, to solve foregoing problems at one stroke by of the invention.
Technical scheme, it is to provide a kind of resonant circuit that can suppress the interference between high frequency connectors and antenna,
The resonant circuit is applied to a circuit board of an electronic installation, and the circuit board is provided with a circuit layout, a high frequency connectors
（Such as：USB3.0 connectors）And an antenna, wherein one end of the high frequency connectors and antenna is respectively connecting to the circuit layout
One first contact and one second contact, and the high frequency connectors are arranged at the side of the circuit layout, so that another electronic installation
Information can be transmitted by the high frequency connectors and the electronic installation, the antenna then can make the electronic installation pass through a preset frequency
（Such as：2.4GHz）Transmitting/receiving wireless information, the resonant circuit are characterised by：It is connected with one the 3rd contact of the circuit layout
Connect, the 3rd contact is arranged at the position between first contact and the second contact, and the resonant frequency of the resonant circuit（Such as：2.4
~2.5GHz）Close to the transmitting-receiving frequency of the antenna.In this way, pass through the resonance electricity being arranged between the high frequency connectors and the antenna
Road, when another electronic installation transmits information by the high frequency connectors and the electronic installation, its caused radiation signal
In the noise close with the antenna frequencies, the normal operation that will be absorbed by the resonant circuit without influencing whether the antenna,
This practice, shield shell, the signal wire in the high frequency connectors are set in the high frequency connectors compared to existing electronic installation
Shield shell is set or installs the mode of absorbing material additional on the signal wire of the high frequency connectors, hence it is evident that is had excellent in cost
Gesture.
In one embodiment of this invention, the high frequency connectors on the circuit board are the specifications of a USB 3.0
Connector, a high definition multimedia interface connector, a DisplayPort interface connectors or a Thunderbolt connect
Mouth connector.
In one embodiment of this invention, the antenna on the circuit board is a microstrip antenna（Such as：The micro-strip day of L-shaped
Line）, one end of the microstrip antenna is connected to second contact of the circuit layout.
In one embodiment of this invention, the antenna on the circuit board is an etching（Etching）Antenna（Such as：The quarter of L-shaped
Lose antenna）, the etching antenna is to be formed by second contact of the circuit layout for starting point etching.
In one embodiment of this invention, the resonant circuit is a microstripline（Such as：The microstripline of L-shaped）, its one end
It is connected to the 3rd contact of the circuit layout.
In one embodiment of this invention, the resonant circuit is an etched line road（Such as：The etching circuit of L-shaped）, the etching
Circuit is formed by the 3rd contact of the circuit layout for starting point etching.
In one embodiment of this invention, the length of the resonant circuit is between 1/5th wavelength to 1/3rd wavelength
Between.
In one embodiment of this invention, the distance between first contact and the 3rd contact is one first distance, and this second
Distance between contact and the 3rd contact is a second distance, and the second distance and the ratio of first distance are between 1 to 5.
By the resonant circuit being arranged between high frequency connectors and antenna, when another electronic installation passes through high frequency connectors
When transmitting information with electronic installation, the noise close with antenna frequencies in its caused radiation signal will be by resonant circuit
The normal operation absorbed without influencing whether antenna；Shielded in addition, being set compared to existing electronic installation in high frequency connectors
Housing, the signal wire setting shield shell in high frequency connectors, or install absorbing material additional on the signal wire of high frequency connectors
Mode, the present invention reduce the practice of noise jamming by setting resonant circuit, due to without producing shield shell in addition or adding
Fill absorbing material, it is only necessary to can complete by circuit planning and designing, hence it is evident that there is the advantage in cost.
Brief description of the drawings
Fig. 1 is the schematic diagram of the first preferred embodiment of the invention；
Fig. 2 is the schematic diagram of the second preferred embodiment of the invention；And
When Fig. 3 is that actual measurement is provided with the resonant circuit of the present invention and does not set the resonant circuit of the present invention, its noise isolation
Effect compares figure.
Main element symbol description
1st, 2 ... electronic installations
11st, 21 ... circuit boards
12nd, 22 ... high frequency connectors
13rd, 23 ... antennas
14th, 24 ... resonant circuits
The distances of D1 ... first
D2 ... second distances
Embodiment
Your the object of the invention, technical characteristic and its effect can be done further understanding and understood, hereby for just auditor
Coordinate schema for embodiment, describe in detail as follows：
The present invention provides a kind of resonant circuit that can suppress the interference between high frequency connectors and antenna, the first of the present invention
In preferred embodiment, refer to shown in Fig. 1, in the resonant circuit 14 application a to circuit board 11 of an electronic installation 1, the circuit
Plate 11 is provided with a circuit layout, a high frequency connectors 12（Such as：USB3.0, HDMI, DisplayPort or Thunderbolt connect
Connect device）And an antenna 13, wherein one end of the high frequency connectors 12 and antenna 13 is respectively connecting to the one first of the circuit layout
Contact and one second contact（Schema does not show the first contact and the second contact）.The high frequency connectors 12 are arranged at the circuit layout
Side, as user by the high frequency connectors 12 by another electronic installation（Schema is not shown）It is mutual with the electronic installation 1
After connection, the electronic installation 1 just can mutually transmit information with another electronic installation.In the first preferred embodiment of the present invention
In, the antenna 13 is a microstrip antenna of L-shaped, to make the electronic installation 1 can be by a preset frequency（Such as：2.4GHz）Receive and dispatch nothing
Line information, still, the present invention is not limited thereto, and the antenna 13 also can be other kinds of antenna, such as L-shaped, F shapes, inverted f
The single-polarized antenna of shape, T-shaped, in-line or ㄇ fonts（Monopole）, planar inverted-F antenna（Planar Inverted-F）、
Inverse-F antenna（Inverted-F）, inverted L antenna（Inverted-L）, indentation antenna（meanderline）Or dipole antenna
（Dipole）Deng antenna, conjunction is first chatted bright.
Refer to again shown in Fig. 1, the resonant circuit 14 is connected with one the 3rd contact of the circuit layout, and the 3rd connects
Point（Schema is not shown）The position being arranged between first contact and the second contact.Distance between 3rd contact and the first contact
For one first distance D1, the distance between the 3rd contact and the second contact is then a second distance D2, and first preferably implements herein
In example, first distance D1 is 17mm, and second distance D2 is then 85mm, therefore, the first distance D1 and second distance D2's
Ratio is 5, and still, the configuration mode of the resonant circuit 14 is not limited thereto.In other embodiments of the invention, also visually
Situation adjusts the ratio between the first distance D1 and second distance D2, such as：The first distance D1 and second distance D2 are all set
It is set to 45mm, it is 1 to make the ratio between the first distance D1 and second distance D2.In addition, for the personage of art,
Obviously it is also contemplated that first distance D1 to be set as to 15mm~45mm arbitrary value, and second distance D2 is set as
45mm~85mm arbitrary value, and change the ratio between the first distance D1 and second distance D2.The above is only part may be real
The illustration of mode is applied, and non-invention advocates the limitation of the interest field of protection, can think easily by all those skilled in the art
And equivalence changes, all should belong to and not depart from the category to be protected of the invention.
Hold, in this first preferred embodiment, the resonant circuit 14 is a microstripline of L-shaped, and its length between
/ 5th wavelength are between 1/3rd wavelength（Such as：Quarter-wave）, still, the present invention is not limited thereto, the resonance
Circuit 14 also can be other kinds of resonant circuit.For example, refer to shown in Fig. 2, second in the present invention is preferably implemented
In example, the circuit board 21 of electronic installation 2 is provided with a circuit layout, and the resonant circuit 24 of the electronic installation 2 designs L-shaped one
Circuit is etched, and the etching circuit is one the 3rd contact by the circuit layout（Schema is not shown）Formed for starting point etching.Should
Configuration relation between the high frequency connectors 22 and antenna 23 of resonant circuit 24 and the electronic installation 2, then it is preferably real to be analogous to first
Example is applied, by these design methods, same attainable cost invents the effect of to be reached.Refer to again shown in Fig. 1, resonance electricity
The resonant frequency on road 14（Such as：2.4~2.5GHz）Close to the transmitting-receiving frequency of the antenna 13（Such as：Foregoing 2.4GHz）.Due to this
Therefore the resonant frequency of resonant circuit 14, is connected close to the transmitting-receiving frequency of the antenna 13 in another electronic installation by the high frequency
When connecing device 12 with the electronic installation 1 transmission information, although the high frequency connectors 12 can produce radiation signal, the high frequency connects
Noise close with the frequency of antenna 13 in radiation signal caused by device 12 is connect, before the antenna 13 is had influence on, Bian Huixian
Absorbed by the resonant circuit 14, and effectively reduce harmful effect of the radiation signal to the antenna 13.
Refer to shown in Fig. 3, be the present inventor, do not set for the electronic installation 1 provided with the resonant circuit 14 and
Another electronic installation of the resonant circuit, actually measure the isolation between its high frequency connectors 12 and the antenna 13, institute
The datagram of acquisition.Wherein thicker lines represent the measurement result of the electronic installation provided with the resonant circuit 14, and thinner
Lines then represent to be not provided with the measurement result of another electronic installation of the resonant circuit 14.By in figure it will be evident that general
It is usually used in the frequency range of transmission of wireless signals（That is 2.4GHz or so）, in the state of provided with the resonant circuit 14, high frequency connection
Isolation between device 12 and the antenna 13 can reach about -70~-60dB, and in the state of the resonant circuit 14 is not provided with, should
Isolation between high frequency connectors 12 and the antenna 13 then only about -55~-50dB, it is clear that in the high frequency connectors 12 and the day
The resonant circuit 14 is set between line 13, really can be to providing good isolation effect between the high frequency connectors 12 and the antenna 13.
Its effect of resonant circuit and antennas orthogonal is preferable, in addition, when the length increase of resonant circuit, the effect of isolation also with
Increase.
Understand in summary, by the resonant circuit 14 being arranged between the high frequency connectors 12 and the antenna 13, when this
When another electronic installation transmits information by the high frequency connectors 12 and the electronic installation 1, in its caused radiation signal with
The close noise of the frequency of antenna 13, the normal fortune that will be absorbed by the resonant circuit 14 without influencing whether the antenna 13
Make；In addition, shield shell, the signal wire setting screen in high frequency connectors are set in high frequency connectors compared to existing electronic installation
Housing is covered, or installs the mode of absorbing material additional on the signal wire of high frequency connectors, the present invention is by setting the resonant circuit 14
To reduce the practice of noise jamming, due to without producing shield shell in addition or installing absorbing material additional, it is only necessary to planned by circuit
Design can be completed, hence it is evident that have the advantage in cost.
It is described above, only it is presently preferred embodiments of the present invention, still, the interest field that the present invention is advocated, does not limit to
In this, by all those skilled in the art, according to disclosed herein technology contents, can think easily and equivalence changes, all should
Category does not depart from the protection category of the present invention.
Claims (12)
1. a kind of resonant circuit that can suppress the interference between high frequency connectors and antenna, the resonant circuit is applied to an electronic installation
A circuit board on, the circuit board is provided with a circuit layout, a high frequency connectors and an antenna, and the wherein high frequency connectors are set
The side of the circuit layout is placed in, so that another electronic installation can transmit information by the high frequency connectors and the electronic installation,
The antenna can then make the electronic installation by a preset frequency transmitting/receiving wireless information, one end difference of the high frequency connectors and antenna
One first contact and one second contact of the circuit layout are connected to, the distance between first contact and the second contact is not less than one
Individual wavelength, it is characterised in that：
The resonant circuit is a microstripline or circuit etching, and the starting point of one end of the microstripline or the circuit etching is the electricity
One the 3rd contact of road layout, the 3rd contact are arranged at the position between first contact and the second contact, make first contact
Air line distance to the 3rd contact is less than first contact to the air line distance of the second contact, and the resonant frequency of the resonant circuit
Close to the transmitting-receiving frequency of the antenna, accordingly, made an uproar in the radiation signal produced by the high frequency connectors with the antenna frequencies close to it
Sound, before the antenna is had influence on, first it will be absorbed by the resonant circuit.
2. resonant circuit as claimed in claim 1, it is characterised in that the high frequency connectors on the circuit board are a general strings
The connector of the specification of row bus 3.0.
3. resonant circuit as claimed in claim 1, it is characterised in that the high frequency connectors on the circuit board are a high-resolutions
Spend multi-media interface connector.
4. resonant circuit as claimed in claim 1, it is characterised in that the high frequency connectors on the circuit board are one
DisplayPort interface connectors.
5. resonant circuit as claimed in claim 1, it is characterised in that the high frequency connectors on the circuit board are one
Thunderbolt interface connectors.
6. resonant circuit as claimed in claim 1, it is characterised in that the antenna on the circuit board is a microstrip antenna, should
One end of microstrip antenna is connected to second contact of the circuit layout.
7. resonant circuit as claimed in claim 1, it is characterised in that the antenna on the circuit board is an etching antenna, should
Etching antenna is to be formed by second contact of the circuit layout for starting point etching.
8. resonant circuit as claimed in claim 6, it is characterised in that the antenna on the circuit board is a L-shaped, F shapes, inverted f
Shape, T-shaped, in-line or ㄇ font antennas.
9. resonant circuit as claimed in claim 7, it is characterised in that the antenna on the circuit board is a L-shaped, F shapes, inverted f
Shape, T-shaped, in-line or ㄇ font antennas.
10. resonant circuit as claimed in claim 1, it is characterised in that the resonant circuit is a L-shaped, F shapes, inverted-F, T words
Shape, in-line or ㄇ font antennas.
11. resonant circuit as claimed in claim 10, it is characterised in that the length of the resonant circuit is between 1/5th wavelength
To between 1/3rd wavelength.
12. the resonant circuit as described in any one of claim 1 to 11, it is characterised in that between first contact and the 3rd contact
Distance be one first distance, the distance between second contact and the 3rd contact is a second distance, and the second distance with should
The ratio of first distance is between 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051540.2A CN104852140B (en) | 2014-02-14 | 2014-02-14 | The resonant circuit of the interference between high frequency connectors and antenna can be suppressed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051540.2A CN104852140B (en) | 2014-02-14 | 2014-02-14 | The resonant circuit of the interference between high frequency connectors and antenna can be suppressed |
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| Publication Number | Publication Date |
|---|---|
| CN104852140A CN104852140A (en) | 2015-08-19 |
| CN104852140B true CN104852140B (en) | 2018-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410051540.2A Active CN104852140B (en) | 2014-02-14 | 2014-02-14 | The resonant circuit of the interference between high frequency connectors and antenna can be suppressed |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101792415B1 (en) * | 2015-12-30 | 2017-11-02 | 삼성전기주식회사 | Ant communication apparatus with improved isolation between antennas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1446389A (en) * | 2000-08-11 | 2003-10-01 | 西门子公司 | Antenna structure of mobile communication deivce, especially mobile phone |
| CN101320840A (en) * | 2008-06-24 | 2008-12-10 | 东南大学 | Multi-stop band ultra-wideband antenna based on miniaturization double module resonator |
| TW201234954A (en) * | 2011-01-11 | 2012-08-16 | Apple Inc | Resonating element for reducing radio-frequency interference in an electronic device |
| TW201401647A (en) * | 2012-06-20 | 2014-01-01 | Sony Corp | Folding antenna device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8102319B2 (en) * | 2008-04-11 | 2012-01-24 | Apple Inc. | Hybrid antennas for electronic devices |
-
2014
- 2014-02-14 CN CN201410051540.2A patent/CN104852140B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1446389A (en) * | 2000-08-11 | 2003-10-01 | 西门子公司 | Antenna structure of mobile communication deivce, especially mobile phone |
| CN101320840A (en) * | 2008-06-24 | 2008-12-10 | 东南大学 | Multi-stop band ultra-wideband antenna based on miniaturization double module resonator |
| TW201234954A (en) * | 2011-01-11 | 2012-08-16 | Apple Inc | Resonating element for reducing radio-frequency interference in an electronic device |
| TW201401647A (en) * | 2012-06-20 | 2014-01-01 | Sony Corp | Folding antenna device |
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| CN104852140A (en) | 2015-08-19 |
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