CN203826539U - Tunable broadband multi-frequency built-in antenna - Google Patents
Tunable broadband multi-frequency built-in antenna Download PDFInfo
- Publication number
- CN203826539U CN203826539U CN201420216762.0U CN201420216762U CN203826539U CN 203826539 U CN203826539 U CN 203826539U CN 201420216762 U CN201420216762 U CN 201420216762U CN 203826539 U CN203826539 U CN 203826539U
- Authority
- CN
- China
- Prior art keywords
- unit
- antenna
- contact point
- built
- arm
- Prior art date
- 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.)
- Expired - Lifetime
Links
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The utility model relates to a tunable broadband multi-frequency built-in antenna. The antenna comprises a ground feeding contact point, a main feeding contact point, a coupling arm, antenna major branches and an antenna matching circuit, wherein the ground feeding contact point, the main feeding contact point, the coupling arm and the antenna major branches are arranged on an FPC (flexible printed circuit) substrate, and the antenna matching circuit is connected with the main feeding contact point through a change-over switch; the coupling arm comprises a J-shaped first unit and a second unit, the first unit is longitudinally arranged, and the second unit transversely extends toward the left along the bending tail end of the first unit; the antenna major branches comprise an L-shaped third unit, an upper arm, a square-shaped fourth unit, a lower arm and a fifth unit, the third unit is longitudinally arranged at the right side of the first unit, the upper arm transversely extends toward the right, the lower arm transversely extends toward the left, the fifth unit is in the shape of a curve, and a cavity gap is formed between the upper arm and the lower arm; and the ground feeding contact point is connected to the upper end of the first unit, and the main feeding contact point is connected to the upper end of the third unit. The tunable broadband multi-frequency built-in antenna realizes the performance advantages of wide coverage, small area, small head and hand back-off and ability of frequency modulation.
Description
Technical field
The utility model relates to antenna, relates in particular to a kind of tunable broadband multifrequency built-in aerial.
Background technology
Along with LTE industrial chain grows stronger day by day, LTE intelligent terminal is ripe gradually, 4G equipment and facility system are significantly universal in the world, the market proportion of smart mobile phone that makes to be applicable to LTE is day by day huge, antenna for mobile phone is as an extremely important part in mobile phone terminal, restricting the overall performance of mobile phone wireless transmission, the quality of its performance will directly have influence on the extensive commercial process of 4G cell phone.
There are many factors can affect the antenna performance of mobile phone terminal, although these factors are correlated with, conventionally can be divided into three major types: mutual coupling and equipment between antenna size, multiple antenna use a model.
Antenna size depends on three key elements: bandwidth of operation, operating frequency and radiation efficiency.The bandwidth requirement of today is more and more higher, and its motive force is from the FCC frequency distribution of the U.S. and the operator's roaming agreement in global range; Different frequency ranges is used in different regions.Bandwidth and antenna size are directly related, and efficiency and antenna size be directly related, this often means that larger sized antenna can provide larger bandwidth and the efficiency of Geng Gao.
Except bandwidth, antenna size also depends on operating frequency.At north America region, the Verizon Wireless of operator and AT & T Mobility select the LTE product work of promoting in 700MHz frequency range, and this is a part for FCC UHF-TV reallocation frequency range several years ago.These new frequency ranges (17,704-746MHz and 13, and the legacy cellular frequency range of 746-786MHz) using than North America (5,824-894MHz) low.This variation is huge, because frequency is lower, wavelength is longer, thereby antenna that need to be longer could keep radiation efficiency constant.In order to guarantee radiation efficiency, antenna size must be done greatly.Yet cell phone apparatus system designer also needs to increase larger display and more function, therefore available antenna length and whole volume is extremely restricted, thereby reduced the beamwidth of antenna and efficiency.
Utility model content
Therefore, the purpose of this utility model is to provide a kind of tunable broadband multifrequency built-in aerial, reduces area, can covering wide frequency band and Frequency Adjustable.
For achieving the above object, the utility model provides a kind of tunable broadband multifrequency built-in aerial, comprise ground feed contact point, main power feed contact point, coupling arm and the antenna main branch road be located on FPC base material, and the antenna-matching circuit being connected with this main power feed contact point by diverter switch; This coupling arm comprises the first module that is J-shaped of longitudinal setting and the second unit laterally extending along the bent back ends of this first module left; This antenna main branch road comprises the L-shaped Unit the 3rd that is longitudinally arranged at this first module right side, upper arm from the 3rd unit bottom horizontal expansion to the right, the Unit the 4th that is the degree of lip-rounding forming below this upper arm right side, underarm from the 4th unit bottom horizontal expansion left, and the Unit the 5th that is arranged at this curved shape in underarm upper left side, wherein between this upper arm and this underarm, the space at interval forms cavity gap; This ground feed contact point is connected in this first module upper end, and this main power feed contact point is connected in the 3rd upper end, unit.
Wherein, this diverter switch is single-pole double-throw switch (SPDT).
Wherein, the lateral length of described upper arm is 28.6 millimeters.
Wherein, the lateral length of described underarm is 35.6 millimeters.
Wherein, the area of described Unit the 4th is 38.6 square millimeters.
Wherein, the area of described Unit the 5th is 15.3 square millimeters.
In sum, tunable broadband multifrequency built-in aerial of the present utility model has been realized frequency band broad covered area, and area is little, the feature performance benefit of the little and Frequency Adjustable of number of people hand rollback.
For further setting forth the utility model, be to realize technological means and the effect that predetermined object is taked, refer to following about detailed description of the present utility model and accompanying drawing, believe the purpose of this utility model, feature and feature, should be goed deep into thus and concrete understanding, yet accompanying drawing only provides reference and explanation use, is not used for the utility model to be limited.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, by embodiment of the present utility model is described in detail, will make the technical solution of the utility model and other beneficial effects apparent.
In accompanying drawing,
Fig. 1 is the vertical view of the tunable broadband multifrequency of the utility model built-in aerial one preferred embodiment;
Fig. 2 is the return loss schematic diagram of this preferred embodiment antenna major state;
Fig. 3 is the circuit diagram of the diverter switch of this preferred embodiment;
Fig. 4 is the return loss schematic diagram after this preferred embodiment antenna change-over switch switches.
Embodiment
As shown in Figure 1, it is the vertical view of the tunable broadband multifrequency of the utility model built-in aerial one preferred embodiment.This is tunable, and broadband multifrequency built-in aerial can utilize the one side of flexible circuit board (FPC) paving copper cabling to make, mainly comprise ground feed contact point 1, main power feed contact point 2, coupling arm 3 and the antenna main branch road 4 be located in FPC base material (not shown), and the antenna-matching circuit (not showing in Fig. 1) being connected with this main power feed contact point 2 by diverter switch; This coupling arm 3 comprises the first module that is substantially J-shaped 31 of longitudinal setting and the second unit 32 laterally extending along the bent back ends of this first module 31 left; This antenna main branch road 4 comprises L-shaped the 3rd unit 41 substantially that is longitudinally arranged at these first module 31 right sides, upper arm 42 from the horizontal expansion to the right of 41 bottoms, Unit the 3rd, the 4th unit 6 that is the degree of lip-rounding forming below these upper arm 42 right sides, underarm 43 from the horizontal expansion left of 6 bottoms, Unit the 4th, and the 5th unit 7 that is arranged at these underarm 43 curved shapes in upper left side, wherein the space at this upper arm 42 and these underarm 43 intervals forms cavity gap 5; This ground feed contact point 1 is connected in this first module 31 upper ends, and this main power feed contact point 2 is connected in 41 upper ends, Unit the 3rd.
Cavity gap 5 is by being surrounded and formed by antenna main branch road 4; The 4th unit 6 and the 5th unit 7 are for regulating antenna frequency deviation and producing extra high-frequency resonant; By the antenna main branch road 4 being connected with antenna main power feed, formed the resonance of low-frequency range, the height of the length of the arm of antenna main branch road 4 and the resonance point of low-frequency range is inversely proportional to, arm is longer, and the resonance point of low frequency is lower, otherwise, arm is shorter, the resonance point of low frequency is higher, and the cavity gap forming between two parts up and down of this arm (being cavity gap 5) formed HFS, and the size in cavity gap 5 also affects the height of high-frequency resonant point, cavity is larger often, and resonance point is just lower; Cavity is less, and resonance point is just higher, and certainly, the size of cavity also can change the length of low band arm, thus also will remote-effects to the resonance point of low-frequency range; In addition, the utility model antenna high band can produce double resonance, and this extra resonance producing is that the 4th unit 6, the 5th unit 7 by antenna the right and left forms, its area large young pathbreaker affect the frequency of this resonance point; Arm (being coupling arm 3) on ground feed has formed the 3rd resonance of high band, is mainly the frequency range 7 of LTE, and band limits is 2500M～2690MHz; In a word, in debug process, by the correlation of each frequency range being adjusted in conjunction with antenna brachium, antenna can be adjusted to optimum state.
In this preferred embodiment, the lateral length L1 of upper arm 42 is about 28.6 millimeters; The lateral length L2 of underarm 43 is about 35.6 millimeters; The area of the 4th unit 6 is about 38.6 square millimeters; The area of the 5th unit 7 is about 15.3 square millimeters, and interior week of Unit the 5th, the approximate circular arc by being about 14.2 millimeters and radius R 2 by radius R 1 and being about 2.6 millimeters was formed by connecting.
The utility model relates to the monopole antenna that is applied to built-in antenna of mobile phone, and all channel antenna is realized in the cavity gap being coupled between feed and arm and arm by combination.This preferred embodiment realizes on typical LTE mobile phone terminal, therefore the profile of antenna need design in conjunction with some appearance characteristics of this type.Why antenna of the present utility model adopts monopole (Monopole) antenna, and the one, the entire area that can dwindle to a certain extent antenna, can have more space to select; Two can improve the in use deleterious effects of suffered number of people hand of antenna, this is because antenna area can be accomplished relatively little, can try one's best antenna cabling is distributed toward the centre position in antenna for mobile phone region, the deleterious effects of number of people hand that like this can more effectively less left and right to antenna performance.
As shown in Figure 2, it is return loss (S11) schematic diagram of this preferred embodiment antenna major state.As can be seen from Figure 2, the band bandwidth of this antenna can cover GSM850 (824～890MHz), GSM900 (880～960MHz), DCS (1710～1880MHz), PCS (1850～1990MHz), WCDMA2100 (1920～2170MHz), WCDMA900 (880～960MHz), the frequency range 3 (1710～1880MHz) of LTE frequency range, frequency range 7 (2500～2690MHz).In Fig. 2, mark 1 (triangle) data are :-4.9965dB, 824.000MHz; Mark 2 data are-5.0982dB, 960.000MHz; Mark 3 data are-20.717dB, 1.71000GHz; Mark 4 data are-11.133dB, 2.17000GHz; Mark 5 data are-23.140dB, 2.70000GHz.Visible, the beamwidth of antenna of the present utility model has covered most application band, but the bandwidth of low frequency part still cannot meet the requirement of frequency range 20 (790～860MHz) frequency range of LTE, in fact for the built-in aerial of mobile phone terminal, this is very difficult by adjusting antenna form or debugging coupling and realize the bandwidth requirement that is total to 170MHz from 790MHz～960MHz, and the method that must seek other realizes the frequency range covering of 790～860MHz.
So, the utility model proposes by increase the diverter switch (Switch) of antenna on antenna feed path, change the coupling of original antenna, original low band resonance is covered in target frequency bands, thereby realize the expansion of low frequency bandwidth.When needs use original coupling, switch switches back again, and this is also a kind of aperture tuned antenna.The realization of this scheme needs a switchable multichannel Switch device to coordinate realization, Switch can be switched to the state of 2 roads or multichannel, can connect or be connected in parallel on a certain path of distributing point (generally at distributing point between radio frequency testing seat).
Referring to Fig. 3, it is the circuit diagram of the diverter switch of the utility model preferred embodiment.As shown in Figure 3, the example of this programme is to adopt one pole double-throw (SPDT) switch, is connected in parallel on main power feed path.When switching over arrives state 0, the resonance of antenna as shown in Figure 2.When resonance is switched to state 1, as shown in Figure 4, it is the return loss schematic diagram after this preferred embodiment antenna change-over switch switches to resonance.In Fig. 4, mark 1 (triangle) data are :-8.4416dB, 790.000MHz; Mark 2 data are-9.8992dB, 860.000MHz; Mark 3 data are-7.6356dB, 1.71000GHz; Mark 4 data are-1.2745dB, 2.17000GHz; Mark 5 data are-5.8667dB, 2.70000GHz.Now effectively frequency range can cover 790～860MHz, has realized the demand of this case.The switching of switch be according to mobile phone terminal in real time frequency range used judge, when mobile phone terminal is applied to the frequency range 20 of LTE, switch is switched to state 1, when be applied to except frequency range 20 other frequency ranges time, switch automatically switches on state 0.The realization of this process needs mobile phone baseband engineer's cooperation.The operating efficiency of antenna under different switching states can be referring to as following table one and table two.
Table one, on off state are the efficiency of 0 o'clock
Table two, on off state are the efficiency of 1 o'clock
In sum, the utility model is applicable to most intelligent mobile phone terminals, and satisfied frequency range is: low-frequency range 790～860MHz; High band 1710～2170MHz; 2500～2690MHz.Tunable broadband multifrequency built-in aerial of the present utility model has been realized frequency band broad covered area, and area is little, the feature performance benefit of the little and Frequency Adjustable of number of people hand rollback.
The above; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to the technical solution of the utility model and technical conceive, and all these changes and distortion all should belong to the protection range of the accompanying claim of the utility model.
Claims (6)
1. a tunable broadband multifrequency built-in aerial, it is characterized in that, comprise ground feed contact point, main power feed contact point, coupling arm and the antenna main branch road be located on FPC base material, and the antenna-matching circuit being connected with this main power feed contact point by diverter switch; This coupling arm comprises the first module that is J-shaped of longitudinal setting and the second unit laterally extending along the bent back ends of this first module left; This antenna main branch road comprises the L-shaped Unit the 3rd that is longitudinally arranged at this first module right side, upper arm from the 3rd unit bottom horizontal expansion to the right, the Unit the 4th that is the degree of lip-rounding forming below this upper arm right side, underarm from the 4th unit bottom horizontal expansion left, and the Unit the 5th that is arranged at this curved shape in underarm upper left side, wherein between this upper arm and this underarm, the space at interval forms cavity gap; This ground feed contact point is connected in this first module upper end, and this main power feed contact point is connected in the 3rd upper end, unit.
2. tunable broadband multifrequency built-in aerial as claimed in claim 1, is characterized in that, this diverter switch is single-pole double-throw switch (SPDT).
3. tunable broadband multifrequency built-in aerial as claimed in claim 1, is characterized in that, the lateral length of described upper arm is 28.6 millimeters.
4. tunable broadband multifrequency built-in aerial as claimed in claim 1, is characterized in that, the lateral length of described underarm is 35.6 millimeters.
5. tunable broadband multifrequency built-in aerial as claimed in claim 1, is characterized in that, the area of described Unit the 4th is 38.6 square millimeters.
6. tunable broadband multifrequency built-in aerial as claimed in claim 1, is characterized in that, the area of described Unit the 5th is 15.3 square millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420216762.0U CN203826539U (en) | 2014-04-30 | 2014-04-30 | Tunable broadband multi-frequency built-in antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420216762.0U CN203826539U (en) | 2014-04-30 | 2014-04-30 | Tunable broadband multi-frequency built-in antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203826539U true CN203826539U (en) | 2014-09-10 |
Family
ID=51482006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420216762.0U Expired - Lifetime CN203826539U (en) | 2014-04-30 | 2014-04-30 | Tunable broadband multi-frequency built-in antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203826539U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240772A (en) * | 2017-07-26 | 2017-10-10 | 上海鸿洛通信电子有限公司 | A kind of FPC plates and communication antenna for supporting multiband |
| CN107925160A (en) * | 2015-09-22 | 2018-04-17 | 华为技术有限公司 | The system and method for adaptive aperture adjustable antenna |
| CN109244682A (en) * | 2018-08-30 | 2019-01-18 | 深圳市信维通信股份有限公司 | A kind of antenna increasing bandwidth and the mobile terminal using the antenna |
| CN109950692A (en) * | 2019-03-05 | 2019-06-28 | 禾邦电子(苏州)有限公司 | A kind of multiband FPCB antenna |
| CN113054433A (en) * | 2021-03-24 | 2021-06-29 | 昆山睿翔讯通通信技术有限公司 | Double ground feed coupling antenna and mobile phone |
-
2014
- 2014-04-30 CN CN201420216762.0U patent/CN203826539U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107925160A (en) * | 2015-09-22 | 2018-04-17 | 华为技术有限公司 | The system and method for adaptive aperture adjustable antenna |
| CN107240772A (en) * | 2017-07-26 | 2017-10-10 | 上海鸿洛通信电子有限公司 | A kind of FPC plates and communication antenna for supporting multiband |
| CN109244682A (en) * | 2018-08-30 | 2019-01-18 | 深圳市信维通信股份有限公司 | A kind of antenna increasing bandwidth and the mobile terminal using the antenna |
| CN109244682B (en) * | 2018-08-30 | 2023-12-19 | 深圳市信维通信股份有限公司 | Antenna capable of increasing bandwidth and mobile terminal adopting same |
| CN109950692A (en) * | 2019-03-05 | 2019-06-28 | 禾邦电子(苏州)有限公司 | A kind of multiband FPCB antenna |
| CN109950692B (en) * | 2019-03-05 | 2024-05-07 | 禾邦电子(苏州)有限公司 | Multiband FPCB antenna |
| CN113054433A (en) * | 2021-03-24 | 2021-06-29 | 昆山睿翔讯通通信技术有限公司 | Double ground feed coupling antenna and mobile phone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204189957U (en) | A kind of tunable LTE metal edge frame antenna being applied to smart mobile phone | |
| CN103117452B (en) | A kind of novel LTE terminal antenna | |
| CN204303980U (en) | Seamless metal loop antenna structure | |
| CN103151601B (en) | A kind of bottom edge slot coupled antenna | |
| CN203826539U (en) | Tunable broadband multi-frequency built-in antenna | |
| CN106972254A (en) | Mobile terminal | |
| CN109149072A (en) | Antenna modules and mobile terminal | |
| CN203589193U (en) | Wideband multitape coupled antenna structure based on mobile phone metal frame | |
| CN105375109A (en) | Tunable antenna structure for completely closed metal-frame mobile phone | |
| CN101587983A (en) | Multi-frequency antenna and radio communication system having same | |
| CN110085994A (en) | A kind of adjustable antenna and terminal | |
| CN205092315U (en) | A tunable antenna structure that is used for complete closure metal frame cell -phone | |
| CN203398299U (en) | Cellphone terminal antenna | |
| CN205609756U (en) | Novel antenna structure of metal backing lid cell -phone | |
| CN105633552A (en) | Combined antenna system and mobile terminal | |
| CN108400427A (en) | Antenna system | |
| CN108110407A (en) | Mobile terminal | |
| CN204651481U (en) | A kind of application all-metal bonnet multiband aerial on a communications device | |
| CN204011720U (en) | A kind of antenna based on switched tuning | |
| CN205583141U (en) | Restructural antenna and mobile terminal | |
| CN103985957B (en) | A kind of broadband multi-band built-in mobile phone antenna | |
| CN106571528B (en) | Multiband antenna system and electronic device | |
| CN204441460U (en) | A kind of IFA antenna of novel wide-band | |
| CN104143694B (en) | Antenna structure and wireless communication device using same | |
| CN105846069A (en) | Multi-band MIMO cell phone antenna with simple decoupling structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200813 Address after: 518102 room 333, 3 / F, block B, famous and excellent purchasing center, Xixiang street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN FLYTEL TECHNOLOGYCO., Ltd. Address before: The Milky Way Fengyun No. 5 building, 518000 Guangdong city of Shenzhen Province, North Song Ping West Fifth Nanshan Science and Technology Industrial District 5 Building Room 502 Patentee before: Wang Hongyang |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |