CN105655693A - Design method of double low frequency resonance LTE antenna - Google Patents
Design method of double low frequency resonance LTE antenna Download PDFInfo
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- CN105655693A CN105655693A CN201610002532.8A CN201610002532A CN105655693A CN 105655693 A CN105655693 A CN 105655693A CN 201610002532 A CN201610002532 A CN 201610002532A CN 105655693 A CN105655693 A CN 105655693A
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- 238000013461 design Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000010168 coupling process Methods 0.000 claims abstract description 27
- 238000005859 coupling reaction Methods 0.000 claims abstract description 27
- 230000008878 coupling Effects 0.000 claims abstract description 25
- 238000005452 bending Methods 0.000 claims description 21
- PEZNEXFPRSOYPL-UHFFFAOYSA-N (bis(trifluoroacetoxy)iodo)benzene Chemical compound FC(F)(F)C(=O)OI(OC(=O)C(F)(F)F)C1=CC=CC=C1 PEZNEXFPRSOYPL-UHFFFAOYSA-N 0.000 claims description 3
- JFUIHGAGFMFNRD-UHFFFAOYSA-N fica Chemical compound FC1=CC=C2NC(C(=O)NCCS)=CC2=C1 JFUIHGAGFMFNRD-UHFFFAOYSA-N 0.000 claims description 3
- ZMRRBWRMQPQQAN-UHFFFAOYSA-N methyl n-[(2',4'-difluoro-4-hydroxy-5-iodobiphenyl-3-yl)carbonyl]-β-alaninate Chemical compound IC1=C(O)C(C(=O)NCCC(=O)OC)=CC(C=2C(=CC(F)=CC=2)F)=C1 ZMRRBWRMQPQQAN-UHFFFAOYSA-N 0.000 claims description 3
- 230000005404 monopole Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000024241 parasitism Effects 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
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Abstract
The invention discloses a design method of a double low frequency resonance LTE antenna. The design method of the double low frequency resonance LTE antenna comprises the following steps: 1) designing a first radiator, namely designing the first radiator at an antenna design region of a carrier, so that the first radiator is at least provided with one low frequency bandwidth and one high frequency bandwidth and space is reserved for a second radiator; and 2) designing the second radiator on the basis of the first radiator, namely selecting a ground point nearby a feeding point of the first radiator, leading out the second radiator at the ground point, controlling low frequency coupling by adjusting maximum routing length of the second radiator, and realizing snake-shaped routing of the second radiator in a coupling region at one side of the first radiator, wherein at least two bends are arranged at the snake-shaped routing, and high frequency coupling is controlled by adjusting the bends; and finally coupling one low frequency resonance at the low frequency bandwidth, and coupling two high frequency resonances at the high frequency bandwidth. The antenna designed by adopting the design method disclosed by the invention can effectively solve the low frequency bandwidth problem and accords with LTE full frequency band communication requirement.
Description
Technical field
The present invention relates to the method for designing of double; two low-frequency resonant LTE antenna.
Background technology
Wireless telecommunications start from the GSM network epoch, and GSM epoch operating frequency of antenna includes GSM900, GSM850, DCS1700, PCS1900. Having arrived the epoch of 3G, 3G epoch operating frequency of antenna includes again WCDMAB12100, EVDO, CDMA2000, TD-SCDMA. And having arrived 4G 5G even in the future, the frequency coverage of radio communication is more and more wider, and current existing Antenna Design runs into bottleneck, is difficulty with.
In order at the problem solving the beamwidth of antenna, current commonly used smart antenna, the solution of smart antenna is to start with solution problem from circuit, so makes design complexity, and cost increases.
Currently also have from antenna itself to optimize the research of bandwidth, but mostly halt because of the defective of low frequency bandwidth.
Summary of the invention
It is an object of the invention to provide the method for designing of a kind of pair of low-frequency resonant LTE antenna, the antenna designed can effectively solve low-frequency band width problem, meets LTE full frequency band communicating requirement.
For achieving the above object, the technical scheme is that the method for designing of a kind of pair of low-frequency resonant LTE antenna of design, comprise the steps:
1) the first radiant body is designed:
Design the first radiant body in the Antenna Design region of carrier, make the first radiant body at least have a low frequency bandwidth, a high frequency bandwidth, and be the second radiant body headspace in Antenna Design region;
2) on the basis of the first radiant body, carry out the design of the second radiant body:
A distributing point earth point selected around at the first radiant body, the second radiant body is drawn at this earth point, low frequency coupling is controlled by adjusting the maximum track lengths of the second radiant body, and make the second radiant body at the snakelike cabling of coupling regime of the first radiant body side, this snakelike cabling arranges at least two bending, controls high-frequency coupling by adjusting bending; Finally it is coupled out a low-frequency resonant in low frequency bandwidth, is coupled out two high-frequency resonants at high frequency bandwidth.
Preferably, the continuous cabling that described snakelike cabling is is starting point with the above-mentioned earth point of the second radiant body, and this continuous cabling arranges 180 degree of bendings turned round of at least two in above-mentioned coupling regime.
Preferably, single bending is corresponding with single high-frequency resonant, controls the coupling of corresponding high-frequency resonant by adjusting the track lengths of single bending.
Preferably, the maximum track lengths of the second radiant body controls the electrical length for low-frequency resonant 1/4 wavelength; The track lengths of single bending controls the electrical length for high-frequency resonant 1/4 wavelength.
Preferably, the full-size of snakelike routing region is 75mm �� 30mm.
Preferably, being connected to two sections of cablings of same bending corner in snakelike cabling, their maximum spacing controls at 5��10mm.
Preferably, described earth point controls at 2��5mm with the spacing of distributing point.
Preferably, the minimum feature of the second radiant body cabling controls at 0.2mm.
Preferably, the second radiant body has at least a place to be connected by cabling with the first radiant body, is equivalent to string inductance and/or electric capacity between the second radiant body and the first radiant body and connects.
Preferably, the Pattern of the first radiant body is Monopole, IFA, PIFA, FICA, FIDA or DGPattern.
Advantages of the present invention and having the beneficial effects that: providing the method for designing of a kind of pair of low-frequency resonant LTE antenna, the antenna designed can effectively solve low-frequency band width problem, meets LTE full frequency band communicating requirement.
Because smart mobile phone is bigger than the width of traditional function machine, generally can reach the width of 50mm, so after traditional antenna design is over, interior of mobile phone also has more than space empty, the present invention is on the basis of the first radiant body, and the design concept of the second radiant body comes from the design principle of passive antenna.
It is also mentality of designing that part at the first radiant body antenna adds passive antenna design itself, but passive antenna is from inventing in present application, passive antenna always is the parasitism using HFS, even if someone lengthens parasitism and attempts debugging low frequency, but after being found to low frequency, smaller bandwidth can not be actually used.
Other produces mode such as patent 201410071015.7 of LTE low frequency, it is use traditional passive antenna to produce high frequency, its low frequency is to add coupling grounding (so-called 3rd earth point) at the Open place of the first radiant body, thus producing another LTE low frequency with the first radiant body coupling, this adjustment method of debugging difficulty to(for) antenna relatively is bigger, because there being 3 earth points, many ground connection, multiple ground connection can cause wherein all intercoupling between several radiant bodies, and detailed programs realize ratio less easily.
Second earth point generally can be coupled out a good frequency band, such as patent: 201220722790.0, it is also directly be lengthened to low frequency frequency range by passive antenna, during this Antenna Design because parasitic cabling ground connection place distance feed distance is farther out (more than more than 10mm), so coupling more difficult realization, also needing to debug together with pcb board, debugging difficulty is relatively big, is unfavorable for large-scale application simultaneously.
The present invention solves all the problems above exactly, break through Traditional Thinking, second earth point, 3rd earth point, generally can be coupled out a good frequency band, but the present invention is either directly through the extra serpentine design of the radiant body of the second earth point, the 3rd earth point can be equivalent to and (need not have actual 3rd earth point again, many earth points, because mutual coupling, can strengthen for actual debugging difficulty), go out high and low frequency by the second earth point (the second radiant body) direct-coupling, direct-coupling goes out multiple frequency range; The design of the second radiant body, lengthens the length of passive antenna on the one hand, on the one hand by with brand-new design, realize the fine coupling of low frequency double resonance, effectively widen 2 resonance of low frequency, 3 resonance of high frequency, the electronically small antenna design of above 5 resonance, effectively cover LTE full frequency band.
Accompanying drawing explanation
Fig. 1 to Fig. 3 is with double; two low-frequency resonant LTE antenna of method for designing of the present invention design;
Fig. 4 is the schematic diagram that inventive antenna forms 5 antenna resonances.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described. Following example are only for clearly illustrating technical scheme, and can not limit the scope of the invention with this.
The technical scheme that the present invention is embodied as is:
The method for designing of a kind of pair of low-frequency resonant LTE antenna, comprises the steps:
1) the first radiant body is designed:
Design the first radiant body in the Antenna Design region of carrier, make the first radiant body at least have a low frequency bandwidth, a high frequency bandwidth, and be the second radiant body headspace in Antenna Design region;
2) on the basis of the first radiant body, carry out the design of the second radiant body:
A distributing point earth point selected around at the first radiant body, the second radiant body is drawn at this earth point, low frequency coupling is controlled by adjusting the maximum track lengths of the second radiant body, and make the second radiant body at the snakelike cabling of coupling regime of the first radiant body side, this snakelike cabling arranges at least two bending, controls high-frequency coupling by adjusting bending; Finally it is coupled out a low-frequency resonant in low frequency bandwidth, is coupled out two high-frequency resonants at high frequency bandwidth.
Preferably, the continuous cabling that described snakelike cabling is is starting point with the above-mentioned earth point of the second radiant body, and this continuous cabling arranges 180 degree of bendings turned round of at least two in above-mentioned coupling regime.
Preferably, single bending is corresponding with single high-frequency resonant, controls the coupling of corresponding high-frequency resonant by adjusting the track lengths of single bending.
Preferably, the maximum track lengths of the second radiant body controls the electrical length for low-frequency resonant 1/4 wavelength; The frequency range of described low-frequency resonant is B5, B6, B8, B12, B13, B14, B17, B18, B19, B20, B26, B27, B28, B44 of LTE; GSM850, GSM900, CDMA800; B5, B6, B8 etc. of WCDMA;
The track lengths of single bending controls the electrical length for high-frequency resonant 1/4 wavelength; The frequency range of described high-frequency resonant is B1, B2, B3, B4, B7, B9, B10, B11, B21, B22, B23 of LTE, B24, B25, B33, B34, B35, B36, B37, B38, B39, B40, B41, B42, B4; GSM1800, GSM1900; B1, B2, B3 of CDMA1900, WCDMA, B4, B7, B9, B10; TD-SCDMA-A, TD-SCDMA-F etc.
Preferably, the full-size of snakelike routing region is 75mm �� 30mm.
Preferably, being connected to two sections of cablings of same bending corner in snakelike cabling, their maximum spacing controls at 5��10mm.
Preferably, described earth point controls at 2��5mm with the spacing of distributing point.
Preferably, the minimum feature of the second radiant body cabling controls at 0.2mm.
Preferably, the second radiant body has at least a place to be connected by cabling with the first radiant body, is equivalent to string inductance and/or electric capacity between the second radiant body and the first radiant body and connects.
Preferably, the Pattern of the first radiant body is Monopole, IFA, PIFA, FICA, FIDA or DGPattern.
Fig. 1 to Fig. 3 is that 1 in each figure is the first radiant body, and 2 is the second radiant body, and 3 is snakelike cabling with double; two low-frequency resonant LTE antenna of method for designing of the present invention design.
As shown in Figure 4, the present invention is by breaking the Antenna Design of thinking set so that antenna at least forms 5 antenna resonances, it is most important that its medium and low frequency realizes 2 resonance;I.e. low frequency��Among number resonance, one of them is first harmonic;Number resonance is first harmonic,Number resonance is second harmonic,Number resonance is triple-frequency harmonics; Under the little and wide band requirement of smart mobile phone, it is achieved the full frequency band of 4GLTE covers.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the technology of the present invention principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. the method for designing of pair low-frequency resonant LTE antenna, it is characterised in that comprise the steps:
1) the first radiant body is designed:
Design the first radiant body in the Antenna Design region of carrier, make the first radiant body at least have a low frequency bandwidth, a high frequency bandwidth, and be the second radiant body headspace in Antenna Design region;
2) on the basis of the first radiant body, carry out the design of the second radiant body:
A distributing point earth point selected around at the first radiant body, the second radiant body is drawn at this earth point, low frequency coupling is controlled by adjusting the maximum track lengths of the second radiant body, and make the second radiant body at the snakelike cabling of coupling regime of the first radiant body side, this snakelike cabling arranges at least two bending, controls high-frequency coupling by adjusting bending; Finally it is coupled out a low-frequency resonant in low frequency bandwidth, is coupled out two high-frequency resonants at high frequency bandwidth.
2. the method for designing of according to claim 1 pair of low-frequency resonant LTE antenna, it is characterized in that, the continuous cabling that described snakelike cabling is is starting point with the above-mentioned earth point of the second radiant body, and this continuous cabling arranges 180 degree of bendings turned round of at least two in above-mentioned coupling regime.
3. the method for designing of according to claim 2 pair of low-frequency resonant LTE antenna, it is characterised in that single bending is corresponding with single high-frequency resonant, controls the coupling of corresponding high-frequency resonant by adjusting the track lengths of single bending.
4. the method for designing of according to claim 3 pair of low-frequency resonant LTE antenna, it is characterised in that the maximum track lengths of the second radiant body controls the electrical length for low-frequency resonant 1/4 wavelength; The track lengths of single bending controls the electrical length for high-frequency resonant 1/4 wavelength.
5. the method for designing of according to claim 4 pair of low-frequency resonant LTE antenna, it is characterised in that the full-size of snakelike routing region is 75mm �� 30mm.
6. the method for designing of according to claim 5 pair of low-frequency resonant LTE antenna, it is characterised in that being connected to two sections of cablings of same bending corner in snakelike cabling, their maximum spacing controls at 5��10mm.
7. the method for designing of according to claim 6 pair of low-frequency resonant LTE antenna, it is characterised in that the spacing of described earth point and distributing point controls at 2��5mm.
8. the method for designing of according to claim 7 pair of low-frequency resonant LTE antenna, it is characterised in that the minimum feature of the second radiant body cabling controls at 0.2mm.
9. the method for designing of according to claim 8 pair of low-frequency resonant LTE antenna, it is characterised in that the second radiant body has at least a place to be connected by cabling with the first radiant body, is equivalent to string inductance and/or electric capacity between the second radiant body and the first radiant body and connects.
10. the method for designing of according to claim 9 pair of low-frequency resonant LTE antenna, it is characterised in that the Pattern of the first radiant body is Monopole, IFA, PIFA, FICA, FIDA or DGPattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610002532.8A CN105655693A (en) | 2016-01-06 | 2016-01-06 | Design method of double low frequency resonance LTE antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610002532.8A CN105655693A (en) | 2016-01-06 | 2016-01-06 | Design method of double low frequency resonance LTE antenna |
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| CN105655693A true CN105655693A (en) | 2016-06-08 |
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| CN201610002532.8A Pending CN105655693A (en) | 2016-01-06 | 2016-01-06 | Design method of double low frequency resonance LTE antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058442A (en) * | 2016-07-06 | 2016-10-26 | 广东通宇通讯股份有限公司 | Antenna |
| CN110943286A (en) * | 2019-09-29 | 2020-03-31 | 歌尔股份有限公司 | Mobile terminal and antenna thereof |
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| CN103187623A (en) * | 2011-12-31 | 2013-07-03 | 宏碁股份有限公司 | Communication electronic device and its antenna structure |
| CN103346393A (en) * | 2013-06-17 | 2013-10-09 | 清华大学 | Multi-frequency plane printed antenna comprising protruded floor and applied to mobile terminal |
| US20150009087A1 (en) * | 2011-06-08 | 2015-01-08 | Amazon Technologies, Inc. | Multi-band antenna |
| CN104934694A (en) * | 2014-03-17 | 2015-09-23 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device employing same |
-
2016
- 2016-01-06 CN CN201610002532.8A patent/CN105655693A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102683830A (en) * | 2011-03-11 | 2012-09-19 | 宏碁股份有限公司 | Mobile communication device and antenna structure thereof |
| US20150009087A1 (en) * | 2011-06-08 | 2015-01-08 | Amazon Technologies, Inc. | Multi-band antenna |
| CN103187623A (en) * | 2011-12-31 | 2013-07-03 | 宏碁股份有限公司 | Communication electronic device and its antenna structure |
| CN103346393A (en) * | 2013-06-17 | 2013-10-09 | 清华大学 | Multi-frequency plane printed antenna comprising protruded floor and applied to mobile terminal |
| CN104934694A (en) * | 2014-03-17 | 2015-09-23 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device employing same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058442A (en) * | 2016-07-06 | 2016-10-26 | 广东通宇通讯股份有限公司 | Antenna |
| CN110943286A (en) * | 2019-09-29 | 2020-03-31 | 歌尔股份有限公司 | Mobile terminal and antenna thereof |
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Application publication date: 20160608 |
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