CN109586019A - A kind of PCB coupled antenna structure and its mobile terminal - Google Patents
A kind of PCB coupled antenna structure and its mobile terminal Download PDFInfo
- Publication number
- CN109586019A CN109586019A CN201811389410.4A CN201811389410A CN109586019A CN 109586019 A CN109586019 A CN 109586019A CN 201811389410 A CN201811389410 A CN 201811389410A CN 109586019 A CN109586019 A CN 109586019A
- Authority
- CN
- China
- Prior art keywords
- pcb
- elastic slice
- antenna
- antenna structure
- microphone
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Landscapes
- Support Of Aerials (AREA)
- Waveguide Aerials (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention discloses a kind of PCB coupled antenna structure and its mobile terminals, including antenna platelet, wherein, the antenna platelet includes PCB bottom and the PCB top layer for being set to PCB bottom upper end, grounding elastic slice is provided on the PCB top layer, the feed elastic slice that is arranged side by side with the grounding elastic slice and it is adjacent to the coupling slot of the grounding elastic slice side, microphone is provided on the PCB bottom, the microphone is set to the lower section of grounding elastic slice side empty regions, using microphone body as a part of antenna resonance, to while improving PCB integrated level, reduce influence of the microphone to antenna performance.
Description
Technical field
The present invention relates to mobile terminal antenna design field, more specifically, it relates to a kind of PCB coupled antenna structure and
Its mobile terminal.
Background technique
With the continuous development of communications industry, especially comprehensively screen become mobile terminal development trend, antenna headroom with
And device stack is more and more closer, proposes increasingly higher demands to current communication system integrated level.Many metal devices
It can be placed on the region of antenna, how to reduce influence of the metal device to mobile terminal antenna, entire industry is paid special attention to
Problem.
In wireless telecommunications, antenna can be usually fixed on pcb board by move mode namely the printing of mobile terminal
On circuit board, using as the receiving of communicating circuit signal and transmitting terminal on pcb board.Since microphone and loudspeaker need a spacing
From preventing cross-talk, it has to microphone are placed on antenna shrapnel attachment, antenna headroom is occupied, certainly will will lead under antenna performance
Drop.
Therefore, the prior art could be improved and develop.
Summary of the invention
The object of the present invention is to provide a kind of PCB coupled antenna structure, reach while improving PCB integrated level, reduces
The purpose of influence of the microphone to antenna performance.
Above-mentioned technical purpose of the invention has the technical scheme that
Including antenna platelet, wherein the antenna platelet includes PCB bottom and the top PCB for being set to PCB bottom upper end
Layer, it is provided with grounding elastic slice, the feed elastic slice being arranged side by side with the grounding elastic slice on the PCB top layer and is adjacent to described
The coupling slot of grounding elastic slice side is provided with microphone on the PCB bottom, and the microphone is set to the grounding elastic slice one
The lower section in side clearway region.
The PCB coupled antenna structure, wherein the feed elastic slice, grounding elastic slice, coupling slot and microphone surround
High-frequency coupling resonant tank, the perimeter of the high-frequency coupling resonant tank are arranged so that high-frequency coupling resonance in quarter-wave
Long length.
The PCB coupled antenna structure, wherein the feed elastic slice is connected to PCB bottom by feeder line, passes through control
The feeder line of the coupling slot and the feed elastic slice is to adjust resonance.
The PCB coupled antenna structure, wherein 18 ~ 20mm of Zhou Changwei of the coupling slot.
The PCB coupled antenna structure, wherein be provided on the PCB bottom and be covered in the microphone connecting line
PCB edge, PCB edge ground connection and be set to the other side of the coupling slot relative to feed elastic slice.
The PCB coupled antenna structure, wherein be additionally provided with radio frequency connector and antenna on the PCB top layer
With module, the antenna match module is connected between the radio frequency connector and feedback ground elastic slice.
The PCB coupled antenna structure, wherein between the antenna match module and feed elastic slice and radio frequency connector
Connected by feeder line.
The PCB coupled antenna structure, wherein switch shrapnel, the switch shrapnel are additionally provided on the PCB bottom
It is connected to PCB bottom by connecting line, the switch shrapnel and the feed elastic slice are spaced a predetermined distance to constitute PIFA days
Line.
The PCB coupled antenna structure, wherein the switch shrapnel and it is described feed elastic slice between spacing be 10 ~
15mm。
A kind of mobile terminal, wherein including described in any item PCB coupled antenna structures as above.
In conclusion the present invention constitutes PIFA antenna by feed elastic slice and switch shrapnel, using microphone as antenna
A part of resonance, using microphone and antenna shrapnel forms high-frequency coupling resonance frequency, thus improving PCB integrated level
While, influence of the microphone to antenna performance is reduced, and control coupling slot and feed elastic slice antenna cabling spacing or pass through
It feeds elastic slice cabling to extend, adjusts coupled resonance frequency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of PCB top layer in the present embodiment.
Fig. 2 is the structural schematic diagram of PCB bottom in the present embodiment.
In figure: 1, PCB top layer；2, PCB bottom；3, elastic slice is fed；4, grounding elastic slice；5, microphone；6, switch shrapnel；7,
Coupling slot；8, antenna match module；9, radio frequency connector.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Embodiment: the embodiment of the present invention provides a kind of PCB coupled antenna structure, and as shown in Figures 1 and 2, including antenna is small
Plate, antenna platelet include PCB bottom 2 and PCB top layer 1, and PCB top layer 1 is set to the upper end of PCB bottom 2, is arranged on PCB top layer 1
There are grounding elastic slice 4 and feed elastic slice 3, the weldering of the pad and feed elastic slice 3 of grounding elastic slice 4 is specifically provided on PCB top layer 1
Disk, grounding elastic slice 3 and feed elastic slice 4 are respectively welded and are fixed on corresponding pad.
Wherein feed elastic slice 3 is used as feed, is connected to PCB top layer 1 by feeder line, feed elastic slice 3 and grounding elastic slice 4 are side by side
Setting, and feed and be reserved with design gaps between elastic slice 3 and grounding elastic slice 4.If design gaps are too small, being easy in processing will feedback
Electric elastic slice 3 welds together with grounding elastic slice 4, short-circuit conditions occurs, if design gaps are excessive, will affect feed elastic slice 3 with
Resonance between grounding elastic slice 4, therefore in the present embodiment, the design gaps fed between elastic slice 3 and grounding elastic slice 4 are preferably
0.5mm。
Coupling slot 7 is provided on PCB top layer 1, the adjacent side with grounding elastic slice 4 of coupling slot 7 opens up.In PCB top layer 1
The side of grounding elastic slice 4 is provided with an empty regions, empty regions ground connection is provided with microphone 5, wheat on PCB bottom 2
Corresponding be welded in of gram wind 5 is arranged on PCB bottom 2 on the pad of microphone 5, and microphone 5 is located at the headroom of 4 side of grounding elastic slice
The lower section in region, and microphone 5 is paved at the empty regions of PCB top layer 1.
It is made of to be formed on antenna platelet coupling slot 7, microphone 5, grounding elastic slice 4, feed elastic slice 3 and its cabling
High-frequency coupling resonance range, i.e. a part by microphone 5 as coupling regime sets antenna so as to avoid microphone 5
The influence of performance is counted, and has saved space.
It is provided with the PCB edge for being covered in the connecting line of microphone 5 on PCB bottom 2, is specially set to coupling slot 7
Relative to the other side of feed elastic slice 3 and the PCB edge of ground connection, the ground of PCB edge for cover microphone 5 PCB bottom 2 with
Cabling among PCB top layer 1, to reduce interference of the cabling to antenna of microphone 5.
It is higher and higher therewith for the integrated level requirement of wherein pcb board since the size of current mobile terminal is smaller and smaller,
Therefore mobile terminal antenna headroom and device stack it is more and more closer, for reduce antenna area size, in PCB bottom 2
On be additionally provided with switch shrapnel 6, switch shrapnel 6 is welded on corresponding pad, and switch shrapnel 6 is connected to PCB by connecting line
Bottom 2, and switch shrapnel 6 and feed elastic slice 3 are spaced a predetermined distance setting, to constitute PIFA antenna.Specifically, described open
The spacing closed between elastic slice 6 and the feed elastic slice 3 is 10 ~ 15mm.
For conventional linear inverse-F antenna, i.e., for IFA antenna, radiating element, ground line are all thin conductor lines, in this way
Equivalent radio-frequency distributed inductance is larger, and distribution capacity is smaller, so that IFA antenna frequency band is typically less than the percent of centre frequency
One.By using the sheet metal with one fixed width to replace the thin wire of IFA antenna, to increase distribution capacity and reduce distribution
Inductance, planar section are equivalent to the parallel connection of several wire antenna impedances, therefore, input impedance of the planar antenna than wire antenna
It wants low, produces the resonance characteristic in broadband, to increase the beamwidth of antenna.
Wherein, switch shrapnel 6 and feed elastic slice 3 are rectangular microstrip antenna radiation patch, and PCB of the invention is coupled
Antenna structure is the top for being placed on ground, and the resonant aerial including grounding elastic slice 4, due to the effect of grounding elastic slice 4, this hair
The resonance length of bright middle antenna shorten to quarter-wave from half wavelength, to reduce the object of conventional antenna structures
Manage size.
To guarantee that the resonance length of antenna is quarter-wave, therefore high-frequency coupling resonance range, i.e. feed elastic slice 3,
The perimeter for the high-frequency coupling resonant tank that grounding elastic slice 4, coupling slot 7 and its microphone 5 surround is arranged so that high-frequency coupling is humorous
It shakes in quarter-wave length.
Since ununified standard, the internal components position setting of every money product is arranged in current mobile terminal internal components
It is all different, it is thus possible to which it is partially long or partially short that there are antenna lengths.The feeder line conduct being connect due to feed elastic slice 3 with PCB top layer 1
A part of high-frequency coupling resonant tank, in PCB design, between control coupling slot 7 and the feeder line of feed elastic slice 3
Away from realization resonance fine tuning.Such as resonance length, by the cabling of 4 top of grounding elastic slice, adjustment is fed between elastic slice 3 and microphone 5
Spacing, or control coupling slot 7 and feed elastic slice 3 connecting line cabling spacing, can be achieved resonance adjustment.It is being embodied
In example, the perimeter of coupling slot 7 is preferably 18 ~ 20mm, and the feed line length of feed elastic slice 3 is adjusted according to actual needs, preferably
It is 2.2 to 2.4mm.
Radio frequency connector 9 and antenna match module 8 are additionally provided on PCB top layer 1, the antenna match module 8 connects
Between the radio frequency connector 9 and feed elastic slice 3, for antenna match module 8 for optimizing PIFA antenna, radio frequency connector 9 is logical
Antenna match module 8 is crossed to connect with antenna body.The pad of radio frequency connector 9 is provided on PCB top layer 1.
Specifically, being connected by feeder line between the antenna match module 8 and feed elastic slice 3 and radio frequency connector 9.
The space compression in mobile terminal is smaller and smaller at present, therefore must sacrifice the performance of antenna.Traditional is outer
Antenna average efficiency is set 50% or more, and mobile terminal is usually built-in antenna at present, built-in antenna efficiency is usually less than 40%.
Therefore, in order to efficiently utilize wireless sender power, the antenna-matching circuit connecting with feed elastic slice is set in PCB top layer, from
And the impedance of antenna is matched, to reduce the reflection loss as caused by impedance.
In a further embodiment, it can also be not provided with antenna-matching circuit, replace and print by using flexible circuit board
Circuit board, the position of adjustment feed elastic slice, to complete antenna optimization.
The embodiment of the present invention also provides a kind of mobile terminal, wherein including PCB coupled antenna structure as described above；Tool
Body is as described above.
In conclusion the present invention constitutes PIFA antenna by feed elastic slice and switch shrapnel, using microphone as antenna
A part of resonance, using microphone and antenna shrapnel forms high-frequency coupling resonance frequency, thus improving PCB integrated level
While, influence of the microphone to antenna performance is reduced, and control coupling slot and feed elastic slice antenna cabling spacing or pass through
It feeds elastic slice cabling to extend, adjusts coupled resonance frequency.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations all should belong to the guarantor of appended claims of the present invention
Protect range.
Claims (10)
1. a kind of PCB coupled antenna structure, including antenna platelet, it is characterized in that: the antenna platelet includes PCB bottom and sets
It is placed in the PCB top layer of PCB bottom upper end, grounding elastic slice is provided on the PCB top layer, is set side by side with the grounding elastic slice
The feed elastic slice set and the coupling slot for being adjacent to the grounding elastic slice side are provided with microphone on the PCB bottom, described
Microphone is set to the lower section of grounding elastic slice side empty regions.
2. PCB coupled antenna structure according to claim 1, it is characterized in that: the feed elastic slice, grounding elastic slice, coupling
Slot and microphone surround high-frequency coupling resonant tank, and the perimeter of the high-frequency coupling resonant tank is arranged so that high-frequency coupling
Resonance is in quarter-wave length.
3. PCB coupled antenna structure according to claim 2, it is characterized in that: the feed elastic slice is connected to by feeder line
PCB bottom, by controlling the feeder line of the coupling slot and the feed elastic slice to adjust resonance.
4. PCB coupled antenna structure according to claim 3, it is characterized in that: 18 ~ 20mm of Zhou Changwei of the coupling slot.
5. PCB coupled antenna structure according to claim 1 is covered in institute it is characterized in that: being provided on the PCB bottom
The PCB edge of microphone connecting line is stated, the PCB edge is grounded and is set to the coupling slot relative to the another of feed elastic slice
Side.
6. PCB coupled antenna structure according to claim 1, it is characterized in that: being additionally provided with radio frequency company on the PCB top layer
Device and antenna match module are connect, the antenna match module is connected between the radio frequency connector and feedback ground elastic slice.
7. PCB coupled antenna structure according to claim 6, it is characterized in that: the antenna match module and feed elastic slice
It is connected by feeder line between radio frequency connector.
8. PCB coupled antenna structure according to claim 1, it is characterized in that: being additionally provided with switch bullet on the PCB bottom
Piece, the switch shrapnel are connected to PCB bottom by connecting line, and the switch shrapnel is spaced a predetermined distance with the feed elastic slice
To constitute PIFA antenna.
9. PCB coupled antenna structure according to claim 8, it is characterized in that: the switch shrapnel and the feed elastic slice
Between spacing be 10 ~ 15mm.
10. a kind of mobile terminal, it is characterized in that: including PCB coupled antenna structure as claimed in claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389410.4A CN109586019B (en) | 2018-11-21 | 2018-11-21 | PCB coupling antenna structure and mobile terminal thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389410.4A CN109586019B (en) | 2018-11-21 | 2018-11-21 | PCB coupling antenna structure and mobile terminal thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109586019A true CN109586019A (en) | 2019-04-05 |
| CN109586019B CN109586019B (en) | 2020-08-11 |
Family
ID=65923545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811389410.4A Active CN109586019B (en) | 2018-11-21 | 2018-11-21 | PCB coupling antenna structure and mobile terminal thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109586019B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111029746A (en) * | 2019-12-24 | 2020-04-17 | 华勤通讯技术有限公司 | Antenna assembly and electronic equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20230034696A (en) * | 2021-09-03 | 2023-03-10 | 삼성전자주식회사 | An electronic device comprising an antenna and microphone |
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| FI20012525A (en) * | 2001-06-29 | 2002-12-30 | Filtronic Lk Oy | Integrated radio telephone construction |
| JP2010010879A (en) * | 2008-06-25 | 2010-01-14 | Panasonic Corp | Antenna device and electronic apparatus using the same |
| CN201294259Y (en) * | 2008-07-22 | 2009-08-19 | 比亚迪股份有限公司 | Built-in double-frequency mobile phone antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111029746B (en) * | 2019-12-24 | 2022-01-21 | 华勤技术股份有限公司 | Antenna assembly and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109586019B (en) | 2020-08-11 |
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Effective date of registration: 20230731 Address after: No. 138, Taodu Road, Dingshu Town, Yixing City, Wuxi City, Jiangsu Province, 214200 Patentee after: JIANGSU HENGXIN TECHNOLOGY Co.,Ltd. Patentee after: JIANGSU HENGXIN WIRELESS TECHNOLOGY Co.,Ltd. Address before: 516006 Zhongkai hi tech Zone, Huizhou, Guangdong, 86 Chang seven Road West Patentee before: HUIZHOU TCL MOBILE COMMUNICATION Co.,Ltd. |
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