CN102280685B - Designing and manufacturing method of mobile phone antenna, mobile phone antenna and mobile phone - Google Patents
Designing and manufacturing method of mobile phone antenna, mobile phone antenna and mobile phone Download PDFInfo
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- CN102280685B CN102280685B CN201110124407.1A CN201110124407A CN102280685B CN 102280685 B CN102280685 B CN 102280685B CN 201110124407 A CN201110124407 A CN 201110124407A CN 102280685 B CN102280685 B CN 102280685B
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- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000004088 simulation Methods 0.000 claims description 22
- 238000012956 testing procedure Methods 0.000 claims description 6
- PEZNEXFPRSOYPL-UHFFFAOYSA-N (bis(trifluoroacetoxy)iodo)benzene Chemical group FC(F)(F)C(=O)OI(OC(=O)C(F)(F)F)C1=CC=CC=C1 PEZNEXFPRSOYPL-UHFFFAOYSA-N 0.000 claims description 4
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- 238000011056 performance test Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 10
- 230000005855 radiation Effects 0.000 abstract description 8
- 230000005670 electromagnetic radiation Effects 0.000 abstract description 3
- 230000005684 electric field Effects 0.000 description 11
- 239000000523 sample Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
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- 239000002184 metal Substances 0.000 description 2
- 208000032041 Hearing impaired Diseases 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
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Abstract
The invention discloses a designing and manufacturing method of a mobile phone antenna, a mobile phone antenna and a mobile phone. The method comprises a modeling step and a testing step, and an HAC (hill start assist control) slot can be arranged on the mobile phone antenna through the two steps and used for improving the HAC performance of the mobile phone. The far field test requirement and near field HAC test standard of mobile phone electromagnetic radiation can be met simultaneously by the mobile phone antenna which is designed by the method, and the HAC performance of the mobile phone can be met on the premises of not influencing the far field radiation performance of the mobile phone; and the design method for the mobile phone antenna is implemented simply, the test requirement can be satisfied by only partially modifying the existing antenna structure, and the electromagnetic property between the mobile phone and a hearing aid is improved effectively.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of antenna for mobile phone design, manufacture method, antenna for mobile phone and mobile phone that improves mobile phone HAC characteristic.
Background technology
Hearing has the people of obstacle conventionally to use hearing aids to improve one's hearing, and the electromagnetic wave of launching when mobile communication may disturb these hearing aidss, Hearing Impaired's life is caused to harmful effect, thereby will carry out certain restriction to the electromagnetic radiation characteristic of mobile phone.For this reason, FCC (FCC) has implemented HAC(Hearing Aid Compatibility) authentication, stipulating that cell phone manufacturer is obligated is limited in Electromagnetic Interference (EMI) below certain level, uses might as well being in the way machine and hearing aids when.The testing standard of HAC is ANSIC63.19, is promulgated by American National Standards Institute (ANSI) (American National Standards Institute).
HAC test comprises radio frequency testing, by the probe of a special test electromagnetic field, the distance of scanning distance mobile phone 10mm or 15mm a 5 × 5cm centered by mobile phone sender
2plane, in this region, collect the electric field or the magnetic field data that are emitted by mobile phone.This test belongs to near-field test, is different from the OTA(OVER THE AIR of mobile phone) test.OTA test is the test of a kind of far field, for radiant power and the receiving sensitivity of testing mobile phone.At present, the OTA radiance of the large more options reduction of cell phone manufacturer mobile phone reduces the electromagnetic interference of mobile phone to hearing aids.And OTA test is a kind of far field test of carrying out for mobile phone radiation power, reduce the interference of mobile phone near field to hearing aids by the radiance index that reduces far field, will produce certain influence to the radio-frequency (RF) power amplification of mobile phone, also be unfavorable for effective radiation of mobile phone radio frequency signal.
For example below for example in, utilize conventional mobile phone antenna to carry out test experiments in PCS frequency range.First, three of PCS frequency range channels (512,661,810) are tested under the essentially identical condition of total radiant power (TRP), obtained corresponding HAC test data, as shown in table 1.In PCS frequency range, the HAC test M3 critical point of electric field (E-field) and magnetic field (H-field) is 84.1V/M and 0.25A/M, Electric and magnetic fields test data in three channels that show in table 1 is all greater than this M3 circle point 84.1V/M and 0.25A/M, does not therefore meet HAC testing standard.
HAC data under the initial TRP of table 1
For this reason, reduce the total radiant power (TRP) of PCS frequency range at these three channels, then carry out HAC test, test result is as shown in table 2.
Table 2 reduces the HAC data after TRP
By reducing TRP, the performance of HAC slightly promotes, but is 91.2V/M at the electric field of channel 810, is greater than 84.1V/M, and the magnetic field of channel 512 and channel 661 is 0.25A/M, equal M3 critical point 0.25A/M, and the performance of TRP has had the decline of 2dBm.From then on can find out, the decline (being mainly the decline of TRP) of OTA performance can not fundamentally solve the electromagnetic interference of mobile phone to hearing aids.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of antenna for mobile phone method for designing, antenna for mobile phone and mobile phone.Antenna for mobile phone according to the method design is applied to after mobile phone, has solved and has not affected under the prerequisite of mobile phone OTA radiance, also can make mobile phone HAC performance meet the problem of testing standard.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of antenna for mobile phone method for designing is provided, and the method comprises: modeling procedure, set up antenna for mobile phone simulation model, wherein, in this antenna for mobile phone simulation model, arrange in order to improve the HAC gap of mobile phone HAC characteristic; Testing procedure, produces antenna for mobile phone sample according to this antenna for mobile phone simulation model, and this antenna for mobile phone sample is carried out to HAC performance test, if test result can not reach HAC testing standard, revises this HAC gap and turns back to modeling procedure; Revise HAC gap and comprise modification HAC gap width, HAC number of slots and the HAC gap position on this antenna for mobile phone simulation model; HAC gap width is located between 0.5mm to 2mm, HAC number of slots is made as and is at least 1, HAC gap is located between the feedback point of antenna for mobile phone simulation model and place and along the side near this antenna for mobile phone simulation model and is extended.
The present invention also provides a kind of antenna for mobile phone, is provided with to improve at least one HAC gap of mobile phone HAC characteristic on this antenna for mobile phone; The width range in HAC gap is 0.5mm to 2mm; HAC gap is arranged between the feedback point of antenna for mobile phone and place and along the side near antenna for mobile phone extends, and wherein this extends to continuous extension or is interrupted and extends; The antenna for mobile phone type that is provided with HAC gap is PIFA antenna.
The present invention also provides a kind of mobile phone, and this mobile phone comprises the antenna for mobile phone preferred embodiment in the above HAC of being provided with gap.
The invention has the beneficial effects as follows: a kind of antenna for mobile phone method for designing, antenna for mobile phone and mobile phone that can simultaneously meet electromagnetic radiation of mobile telephone far field test request and near field HAC testing standard is provided, preferably resolved the contradictory relation of mobile phone far-field radiation and near-field thermal radiation in traditional approach; This antenna for mobile phone method for designing realizes simple, and structure is simple and clear, and only need carry out local flow improvement to existing antenna structure can meet test request, has effectively improved the Electro Magnetic Compatibility between mobile phone and hearing aids; And, also help the processing and manufacturing of antenna for mobile phone, and update to existing mobile phone.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of an embodiment of antenna for mobile phone method for designing according to the present invention;
Fig. 2 is the structural representation of an embodiment of antenna for mobile phone according to the present invention;
Fig. 3 is the structural representation of another embodiment of antenna for mobile phone according to the present invention;
Fig. 4 is the structural representation of another embodiment of antenna for mobile phone according to the present invention;
Fig. 5 is the structural representation of another embodiment of antenna for mobile phone according to the present invention.
Embodiment
Fig. 1 has shown it is a preferred embodiment of antenna for mobile phone method for designing of the present invention.The embodiment showing at Fig. 1 has comprised modeling procedure S11 and testing procedure S12, and its process prescription is as follows.
First, in modeling procedure S11, by means of the design of Simulation instrument of antenna for mobile phone, the HFSS software of for example U.S. Ansoft company, sets up the simulation model of antenna for mobile phone.In the design of antenna for mobile phone in the past, these simulation models may be built up, and the antenna for mobile phone model that therefore can build up based on these in this preferred embodiment completes further design, can greatly simplify like this design process of antenna for mobile phone of the present invention.As a key Design content of antenna for mobile phone method for designing embodiment of the present invention, a gap is set on the basis of original antenna for mobile phone model exactly.This gap is the gap of selecting suitable position to output on original antenna for mobile phone model, if for example original antenna for mobile phone model comprises antenna feed point and place, such gap can be set between antenna feed point and place.This slot parameter comprises gap width, number of slots, gap position, seam shape and trend etc.The gap arranging on antenna for mobile phone is mainly the resonance characteristic for changing antenna for mobile phone, this relies on sheet metal generation resonance different from general antenna for mobile phone, because producing resonance, sheet metal can produce corresponding electric current at the ground end of the printed circuit board of mobile phone (pcb board), and then have influence on hearing aids when electromagenetic wave radiation, and in the time producing resonance with gap, relatively little on the impact of hearing aids.Just based on this principle, gap is set on antenna for mobile phone can improves the HAC characteristic of mobile phone, therefore, this gap of improving mobile phone HAC characteristic is called to HAC gap here.
HAC gap is that the HAC characteristic improvement that mobile phone brings is mainly determined by HAC slot parameter, therefore in modeling procedure S11, be mainly to carry out emulation testing for the HAC gap with different parameters feature, make the antenna for mobile phone model of design in simulated environment, first can meet HAC testing standard.As previously mentioned, HAC slot parameter comprises the features such as HAC gap width, HAC number of slots and HAC gap arranging on antenna for mobile phone simulation model.As preferred embodiment, HAC gap width is 0.5mm to 2mm, HAC number of slots is at least 1, and extend between the feedback point of antenna for mobile phone simulation model and place and along the side near described antenna for mobile phone simulation model in the position Shi GaiHAC gap of HAC gap on described antenna for mobile phone.
After completing modeling procedure S11, enter testing procedure S12.In testing procedure S12, first produce corresponding antenna for mobile phone sample according to the antenna for mobile phone simulation model building in modeling procedure S11, carry out object test for this antenna for mobile phone sample, further the actual test of check effect.Can not meet HAC testing standard if utilize this antenna for mobile phone sample to carry out HAC performance test, illustrate that the antenna for mobile phone simulation model and the practical application that in modeling procedure S11, build also have gap, HAC gap needs to revise, and comprises and revises HAC gap width, HAC number of slots and the HAC gap position on described antenna for mobile phone simulation model.For this reason, turn back to redjustment and modification HAC gap in modeling procedure S11, optimize antenna for mobile phone simulation model structure, and then enter testing procedure S12 and carry out object test, so repeatedly, until meet HAC testing standard.
Fig. 2 has shown the structural representation of a preferred embodiment of antenna for mobile phone of the present invention.The embodiment showing at Fig. 2 comprises antenna for mobile phone 11, antenna place 12, antenna feed point 13 and HAC gap 14.Antenna for mobile phone 11 belongs to antenna type conventional in mobile phone, for example PIFA antenna.A side at antenna for mobile phone is provided with antenna place 12 and antenna feed point 13, and antenna place 12 is for antenna for mobile phone ground connection, and antenna feed point 13 is connected with transmitting power amplifier unit and the receiving element of mobile phone.Between antenna place 12 and antenna feed point 13, be provided with a gap, i.e. HAC gap.Can realize when the mobile phone emitting electromagnetic wave by HAC gap is set on antenna for mobile phone 11, meet near field HAC testing standard, and can not exert an influence to mobile phone OTA far-field radiation performance, take into account the requirement of mobile phone radiation near-field test and far field test simultaneously.The antenna for mobile phone embodiment of the present invention that Fig. 2 shows obtains according to the antenna for mobile phone method for designing embodiment design shown in Fig. 1, and the width range in HAC gap is wherein 0.5mm to 2mm.
Fig. 3 has shown the structural representation of another preferred embodiment of antenna for mobile phone of the present invention.This embodiment comprises antenna for mobile phone 21, antenna place 22, antenna feed point 23 and HAC gap 24 equally.It is two that the antenna for mobile phone embodiment showing with Fig. 2 distinguishes the number that part is HAC gap 24.
Fig. 4 has shown the structural representation of another preferred embodiment of antenna for mobile phone of the present invention.On the antenna for mobile phone embodiment basis that this embodiment shows at Fig. 2, make HAC gap 34 not only between antenna place 32 and antenna feed point 33, also extend along the side of antenna for mobile phone 31 simultaneously.
Fig. 5 has shown the structural representation of another preferred embodiment of antenna for mobile phone of the present invention.Compared with the embodiment that this embodiment shows with Fig. 4, difference part is, HAC gap 44 is not continuous extension while extension along the side of antenna for mobile phone 41, extends but be interrupted.HAC gap 44 is also between antenna place 42 and antenna feed point 43.
The antenna for mobile phone embodiment of the present invention that Fig. 2 to Fig. 5 shows obtains according to the antenna for mobile phone method for designing embodiment design shown in Fig. 1, and the antenna for mobile phone in each embodiment belongs to antenna for mobile phone common type, for example PIFA antenna.In addition, in the operational frequency bandwidth scope of antenna for mobile phone, comprise at least one in 880-960MHz, 1710-1880MHz and 1850-1990MHz.
For illustrate utilize antenna for mobile phone of the present invention after mobile phone obtain good HAC performance, below relatively an antenna for mobile phone embodiment in the magnetic field and the electric field data that arrange before and after HAC gap.
Table 3 is, at antenna for mobile phone embodiment, the magnetic field data of testing before HAC gap is set.According to HAC testing standard ANSIC63.19, the distance of scanning distance mobile phone 10mm or 15mm a 5 × 5cm centered by mobile phone sender
2plane, this test plane divide into again 9 blocks, each block is tested respectively magnetic field and electric field strength.Table 3 is exactly the measurement of magnetic field data of 9 blocks that obtain, and according to the test request of this standard, removes after the maximum of 3, and its test result is 0.29A/M, is greater than M3 critical point 0.25A/M, does not meet HAC testing standard.
Table 3 arranges HAC gap measurement of magnetic field data before
| 0.15 | 0.11 | 0.15 |
| 0.32 | 0.29 | 0.20 |
| 0.40 | 0.32 | 0.23 |
Table 4 is, at antenna for mobile phone embodiment, the electric field data of testing before HAC gap are set.According to similar method of testing, can from table 4, obtain its electrical field test result is 125.84V/M, is greater than M3 critical point 84.1V/M, does not also meet HAC testing standard.
Table 4 arranges HAC gap electrical field test data before
| 105.35 | 104.73 | 70.57 |
| 133.93 | 125.84 | 79.62 |
| 120.21 | 99.59 | 55.31 |
Table 5 is after antenna for mobile phone embodiment arranges HAC gap, the magnetic field data of under equal conditions testing.According to similar method of testing, its field, magnetic field test result is 0.18A/M as seen from Table 5, is less than M3 critical point 0.25A/M, meets HAC testing standard.
Table 5 arranges HAC gap measurement of magnetic field data afterwards
| 0.23 | 0.15 | 0.13 |
| 0.27 | 0.18 | 0.13 |
| 0.24 | 0.15 | 0.10 |
Table 6 is after antenna for mobile phone embodiment arranges HAC gap, the electric field data of under equal conditions testing.According to similar method of testing, its electric field test result is 61.94V/M as seen from Table 6, is less than M3 critical point 84.1V/M, meets HAC testing standard.
Table 6 arranges HAC gap electrical field test data afterwards
| 50.43 | 59.99 | 61.94 |
| 70.51 | 54.48 | 61.18 |
| 77.73 | 69.88 | 55.63 |
As can be seen here, antenna for mobile phone embodiment of the present invention has obtained good HAC performance improvement.
The invention still further relates to the mobile phone that above antenna for mobile phone preferred embodiment of the present invention is installed.
The invention still further relates to the manufacture method of antenna for mobile phone, in the embodiment of an antenna for mobile phone manufacture method, between the feedback point of this antenna for mobile phone and place, HAC gap is set.In the preferred embodiment of another antenna for mobile phone manufacture method, HAC gap is set and extends along the side near this antenna for mobile phone.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent method or equivalent structure that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. an antenna for mobile phone method for designing, is characterized in that, comprising:
Modeling procedure, sets up described antenna for mobile phone simulation model, wherein, in described antenna for mobile phone simulation model, arranges in order to improve the HAC gap of mobile phone HAC characteristic;
Testing procedure, produces antenna for mobile phone sample according to described antenna for mobile phone simulation model, and described antenna for mobile phone sample is carried out to HAC performance test, if test result can not reach HAC testing standard, revises described HAC gap and turns back to described modeling procedure;
Wherein, the described HAC of described modification gap comprises modification HAC gap width, HAC number of slots and the HAC gap position on described antenna for mobile phone simulation model;
Described HAC gap width is located between 0.5mm to 2mm, described HAC number of slots is made as and is at least 1, described HAC gap is located between the feedback point of described antenna for mobile phone simulation model and place and along the side near described antenna for mobile phone simulation model and is extended.
2. an antenna for mobile phone, is characterized in that: at least one the HAC gap that is provided with to improve mobile phone HAC characteristic on described antenna for mobile phone;
The width range in described HAC gap is 0.5mm to 2mm;
Described HAC gap is arranged between the feedback point of described antenna for mobile phone and place and along the side near described antenna for mobile phone extends, and wherein saidly extends to continuous extension or is interrupted and extends;
Described antenna for mobile phone type is PIFA antenna.
3. a mobile phone, is characterized in that: described mobile phone comprises antenna for mobile phone claimed in claim 2.
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| CN201110124407.1A CN102280685B (en) | 2011-05-13 | 2011-05-13 | Designing and manufacturing method of mobile phone antenna, mobile phone antenna and mobile phone |
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| CN201110124407.1A CN102280685B (en) | 2011-05-13 | 2011-05-13 | Designing and manufacturing method of mobile phone antenna, mobile phone antenna and mobile phone |
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| CN102280685A CN102280685A (en) | 2011-12-14 |
| CN102280685B true CN102280685B (en) | 2014-07-09 |
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| CN106093597B (en) * | 2016-05-28 | 2018-08-17 | 河北工业大学 | The photo-electric electric field near field probes made using printed circuit board |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997164A (en) * | 2009-08-21 | 2011-03-30 | 联发科技股份有限公司 | Portable electronic device and antenna thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997164A (en) * | 2009-08-21 | 2011-03-30 | 联发科技股份有限公司 | Portable electronic device and antenna thereof |
Non-Patent Citations (2)
| Title |
|---|
| "Printed λ/8-PIFA for Penta-Band WWAN Operation in the Mobile Phone";Chih-Hua Chang等;《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》;20090531;第57卷(第5期);摘要，第13栏第2段-第16栏第1段，附图1、13-14，表II * |
| Chih-Hua Chang等."Printed λ/8-PIFA for Penta-Band WWAN Operation in the Mobile Phone".《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》.2009,第57卷(第5期),第1373-1381页. |
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