CN104577311A - Internal antenna and mobile terminal thereof - Google Patents
Internal antenna and mobile terminal thereof Download PDFInfo
- Publication number
- CN104577311A CN104577311A CN201510004062.4A CN201510004062A CN104577311A CN 104577311 A CN104577311 A CN 104577311A CN 201510004062 A CN201510004062 A CN 201510004062A CN 104577311 A CN104577311 A CN 104577311A
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- Prior art keywords
- antenna
- built
- aerial
- mobile terminal
- ceramic block
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Abstract
The invention discloses an internal antenna and a mobile terminal thereof. The internal antenna comprises an antenna radiating body, a matching circuit and a feed point. The antenna radiating body comprises a ceramic block and an antenna routing part. The ceramic block and one end of the matching circuit are connected through the feed point, and the other end of the matching circuit is a signal input/output end. One end of the antenna routing part is connected with the ceramic block, and the other end of the antenna routing part is in clearance. The mobile terminal comprises a shell and the internal antenna arranged in the shell. According to the internal antenna and the mobile terminal of the internal antenna, the dielectric constant of a dielectric is changed by adding the ceramic block, the effective clearance height of the antenna is increased, the frequency of the internal antenna can be lower, and thus the low-frequency internal antenna can be arranged.
Description
Technical field
The present invention relates to antenna, particularly a kind of built-in aerial and mobile terminal thereof.
Background technology
The low-frequency antenna of existing terminal equipment adopts external whip antenna usually, and this external antenna adds the length of terminal, uses and brings inconvenience, and affect the appearance design of terminal equipment to user.And for built-in aerial, the effective head room needed for low-frequency antenna is comparatively large, the wiring area required for longer antenna is larger, and therefore, the design of built-in low-frequency antenna is very difficult.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, a kind of built-in aerial and mobile terminal thereof are proposed, the dielectric constant of medium is changed by increasing ceramic block, add effective head room of antenna, the frequency of built-in aerial can be made lower, solve the problem that existing built-in low-frequency antenna design is very difficult.
For solving the problems of the technologies described above, the present invention is achieved through the following technical solutions:
The invention provides a kind of built-in aerial, it comprises: antenna radiator, match circuit and distributing point, and described antenna radiator comprises ceramic block and antenna cabling; One end of described match circuit is connected by distributing point with described ceramic block, and the other end is signal input/output terminal; One end of described antenna cabling is connected with described ceramic block, other end headroom.By arranging ceramic block between distributing point and antenna cabling, change dielectric permittivity, thus change effective head room of antenna, the frequency of built-in aerial can be made lower, and make antenna cabling " away from " with reference to ground, be convenient to obtain higher radiation efficiency.
Preferably, also comprise antenna carrier, described antenna cabling is arranged on described antenna carrier, is arranged on antenna carrier by antenna cabling, facilitates the design of antenna cabling.
Preferably, the material of described antenna carrier is insulating material.
Preferably, described antenna carrier is positioned at the top of described ceramic block and/or described match circuit, not affecting on the basis of performance, effectively saves space, also can increase the length of antenna cabling as required.
Preferably, described match circuit is double resonance match circuit, forms the effective bandwidth that double resonance adds antenna.
Preferably, described match circuit comprises the first electric capacity, the second electric capacity, the 3rd electric capacity, the first inductance and the second inductance; Wherein: described first inductance is connected in series with described first electric capacity, described second inductance successively, described second electric capacity and described 3rd Capacitance parallel connection are connected to described first electric capacity two ends, described second electric capacity and described 3rd capacity earth.
The present invention also provides a kind of mobile terminal of built-in aerial, and the built-in aerial comprising shell and arrange in the enclosure, described built-in aerial is above-mentioned built-in aerial.
Preferably, the pcb board of described mobile terminal is provided with headroom district, described distributing point and described ceramic block are arranged in described headroom district, arrange the bandwidth sum efficiency that built-in aerial can improve in headroom district.
Preferably, the back cover of described shell is metal back cover, and described metal back cover, as a part for described antenna cabling, effectively can reduce the length of antenna cabling.
Compared to prior art, the present invention has the following advantages:
(1) built-in aerial provided by the invention by increasing ceramic block between antenna cabling and distributing point, change the dielectric constant of medium, thus add effective headroom of antenna routing region, reduce the frequency of antenna transmitting-receiving, make the design of low-frequency antenna become possibility;
(2) effectively head room increases, make antenna cabling " away from " with reference to ground, be convenient to obtain higher radiation efficiency, make antenna also can obtain higher radiation efficiency at lower frequency;
(3) matching network of the present invention forms double resonance, adds the effective bandwidth of antenna;
(4) mobile terminal of built-in aerial provided by the invention uses metal back cover, makes metal shell as a part for antenna cabling, effectively reduces the length of antenna cabling.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiments of the present invention are described further:
Fig. 1 is the structural representation of built-in aerial of the present invention;
Fig. 2 is the match circuit figure of embodiments of the invention 1;
Fig. 3 is the rearview of the mobile terminal of embodiments of the invention 2;
Fig. 4 is the perspective view of Fig. 3;
Fig. 5 is the rearview of the mobile terminal of embodiments of the invention 3;
Fig. 6 is the return loss plot of the built-in aerial of embodiments of the invention 3.
Label declaration: 1-antenna radiator, 2-distributing point, 3-match circuit, 4-ceramic block, 5-antenna cabling, 6-signal input/output terminal, 7-antenna carrier, 8-PCB plate, 9-headroom district, 10-back cover.
Embodiment
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed execution mode and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Built-in aerial of the present invention comprises: antenna radiator, match circuit and distributing point, and antenna radiator comprises ceramic block and antenna cabling; Match circuit is connected by distributing point with ceramic block, and antenna cabling one end is connected with ceramic block, other end headroom.Be described in greater detail below in conjunction with specific embodiment.
Embodiment 1:
As shown in Figure 1, for the structure chart of the built-in aerial of the present embodiment, it comprises: antenna radiator 1, match circuit 3, antenna radiator 1 comprises ceramic block 4 and antenna cabling 5, wherein: ceramic block 4 and match circuit 3 are coupled together by distributing point 2, the other end of match circuit 3 is signal input/output terminal 6, and antenna cabling 5 one end connects ceramic block 4, other end headroom.
As shown in Figure 2, for the circuit structure diagram of the match circuit 3 of the present embodiment, it is double-resonant circuit, comprise the first electric capacity C1, the second electric capacity C2,3rd electric capacity C3, the first inductance L 1 and the second inductance L 2, wherein: the first inductance L 1 is connected in series with the first electric capacity C1, the second inductance L 2 successively, the second electric capacity C2 and the 3rd electric capacity C3 is connected in parallel in the two ends of the first electric capacity C1, the other end ground connection of the second electric capacity C2 and the 3rd electric capacity C3.The matching network of this five device forms double resonance, adds the effective bandwidth of built-in aerial.
The match circuit 3 herein adopted is an example, should not be construed as limitation of the present invention, those skilled in the art is to be understood that it has a lot of alternative forms, according to the requirement of surrounding environment and different antennae, can design different match circuits to get a desired effect.
The mobile terminal of built-in aerial of the present invention comprises: shell and the built-in aerial arranged in the enclosure, built-in aerial is built-in aerial described above, and it can receive and dispatch the radio signal of lower frequency wave band.Be described below in conjunction with specific embodiment.
Embodiment 2:
As shown in Figure 3, be the rearview of the mobile terminal of the present embodiment, it comprises shell, is provided with the built-in aerial described by embodiment 1 in shell.Distributing point 2, match circuit 3 and ceramic block 4 are arranged on pcb board 8, pcb board 8 are provided with a headroom district 9, and distributing point 2 and ceramic block 4 are arranged in this headroom district 9, and antenna cabling 5 is arranged on antenna carrier 7, and antenna carrier 7 is positioned at the top of pcb board 8.The material of antenna carrier 7 is the design of insulating material, convenient antenna cabling 5, ensure that the insulating properties between antenna cabling 5 and pcb board 8, improves the performance of antenna.
The bandwidth sum efficiency that antenna can improve in headroom district 9 is set, antenna cabling 5 is arranged on antenna carrier 7, can space be saved, improve the transmitting-receiving effect of built-in aerial.
As shown in Figure 4, be the perspective view of Fig. 3, namely remove the rearview of the mobile terminal of the back cover 10 of antenna carrier 7 and shell, the device clearly illustrated on the pcb board 8 of mobile terminal is arranged.In different embodiment, the device on pcb board 8 and headroom district 9 can be arranged in diverse location place as required.
Embodiment 3:
The present embodiment is on the basis of embodiment 2, and the back cover 10 of mobile terminal case is set to metal back cover, it can be used as a part for antenna cabling 5, effectively reduce the length of antenna cabling 5, its rearview as shown in Figure 5.
In the present embodiment, the actual clearance of antenna routing region is 6.8mm, and the thickness of ceramic block is 6.5mm, L1=12nH, L2=15nH, C1=3.9PF, C2=6.8PF, C3=8.2PF.As shown in Figure 6, be the return loss plot of the built-in aerial of the mobile terminal of the present embodiment, can find out that this built-in aerial has higher efficiency when receiving and dispatching the wireless signal of 350MHz ~ 390MHz, achieving the transmitting-receiving of low frequency wireless signal.
The efficiency of the built-in aerial of the present embodiment is as shown in table 1:
Table 1
| Frequency (MHz) | 350 | 360 | 370 | 380 | 390 |
| Efficiency (%) | 35.2 | 42.73 | 38.26 | 40.65 | 36.41 |
Disclosed herein is only the preferred embodiments of the present invention, and this specification is chosen and specifically described these embodiments, and being to explain principle of the present invention and practical application better, is not limitation of the invention.The modifications and variations that any those skilled in the art do within the scope of specification, all should drop in scope that the present invention protects.
Claims (9)
1. a built-in aerial, is characterized in that, comprising: antenna radiator, match circuit and distributing point, and described antenna radiator comprises ceramic block and antenna cabling;
One end of described match circuit is connected by distributing point with described ceramic block, and the other end is signal input/output terminal; One end of described antenna cabling is connected with described ceramic block, other end headroom.
2. built-in aerial according to claim 1, is characterized in that, also comprises antenna carrier, and described antenna cabling is arranged on described antenna carrier.
3. built-in aerial according to claim 2, is characterized in that, described antenna carrier is positioned at the top of described ceramic block and/or described match circuit.
4. built-in aerial according to claim 3, is characterized in that, the material of described antenna carrier is insulating material.
5. built-in aerial according to claim 1, is characterized in that, described match circuit is double resonance match circuit.
6. built-in aerial according to claim 5, is characterized in that, described match circuit comprises the first electric capacity, the second electric capacity, the 3rd electric capacity, the first inductance and the second inductance; Wherein:
Described first inductance is connected in series with described first electric capacity, described second inductance successively, and described second electric capacity and described 3rd Capacitance parallel connection are connected to described first electric capacity two ends, described second electric capacity and described 3rd capacity earth.
7. a mobile terminal for built-in aerial, the built-in aerial comprising shell and arrange in the enclosure, it is characterized in that, described built-in aerial is the built-in aerial as described in any one of claim 1 to 5.
8. the mobile terminal of built-in aerial according to claim 7, is characterized in that, the pcb board of described mobile terminal is provided with headroom district, and described distributing point and described ceramic block are arranged in described headroom district.
9. the mobile terminal of built-in aerial according to claim 7, is characterized in that, the back cover of described shell is metal back cover, and described metal back cover is as a part for described antenna cabling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004062.4A CN104577311A (en) | 2015-01-05 | 2015-01-05 | Internal antenna and mobile terminal thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510004062.4A CN104577311A (en) | 2015-01-05 | 2015-01-05 | Internal antenna and mobile terminal thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104577311A true CN104577311A (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510004062.4A Pending CN104577311A (en) | 2015-01-05 | 2015-01-05 | Internal antenna and mobile terminal thereof |
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| Country | Link |
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| CN (1) | CN104577311A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10109922B2 (en) | 2015-09-30 | 2018-10-23 | Microsoft Technology Licensing, Llc | Capacitive-fed monopole antenna |
| CN111211419A (en) * | 2020-03-20 | 2020-05-29 | 歌尔科技有限公司 | Design method, device and system of dual-resonance antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI297228B (en) * | 2006-05-18 | 2008-05-21 | Yageo Corp | A compact composite antenna |
| TW201036251A (en) * | 2009-03-26 | 2010-10-01 | Walsin Technology Corp | Ceramic chip type antenna |
| CN101950856A (en) * | 2010-07-19 | 2011-01-19 | 中兴通讯股份有限公司 | Multiband antenna device and application terminal thereof |
| CN103326112A (en) * | 2012-03-23 | 2013-09-25 | 联想(北京)有限公司 | Antenna device and terminal equipment |
-
2015
- 2015-01-05 CN CN201510004062.4A patent/CN104577311A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI297228B (en) * | 2006-05-18 | 2008-05-21 | Yageo Corp | A compact composite antenna |
| TW201036251A (en) * | 2009-03-26 | 2010-10-01 | Walsin Technology Corp | Ceramic chip type antenna |
| CN101950856A (en) * | 2010-07-19 | 2011-01-19 | 中兴通讯股份有限公司 | Multiband antenna device and application terminal thereof |
| CN103326112A (en) * | 2012-03-23 | 2013-09-25 | 联想(北京)有限公司 | Antenna device and terminal equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10109922B2 (en) | 2015-09-30 | 2018-10-23 | Microsoft Technology Licensing, Llc | Capacitive-fed monopole antenna |
| CN111211419A (en) * | 2020-03-20 | 2020-05-29 | 歌尔科技有限公司 | Design method, device and system of dual-resonance antenna |
| CN111211419B (en) * | 2020-03-20 | 2021-08-06 | 歌尔科技有限公司 | Design method, device and system of dual-resonance antenna |
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Application publication date: 20150429 |
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