CN201319403Y - Multiband monopole antenna capable of improving HAC characteristics - Google Patents
Multiband monopole antenna capable of improving HAC characteristics Download PDFInfo
- Publication number
- CN201319403Y CN201319403Y CNU2008201359740U CN200820135974U CN201319403Y CN 201319403 Y CN201319403 Y CN 201319403Y CN U2008201359740 U CNU2008201359740 U CN U2008201359740U CN 200820135974 U CN200820135974 U CN 200820135974U CN 201319403 Y CN201319403 Y CN 201319403Y
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- radiant body
- hac
- metal radiant
- unipole antenna
- multiband
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Abstract
A multiband monopole antenna capable of improving the HAC characteristics is mainly provided with a first metal radiator and a second metal radiator which can excite a high band and are arranged parallel to each other in the same trend. A tortuous winding part is connected between the same sides of the first and the second metal radiators and can excite a low band. The circuit path length of the tortuous winding part is slightly bigger than half Lambda of the high band, thereby ensuring the current phase difference of a feed-in terminal and a connecting terminal to be about Pi (180 degrees); the electric fields generated by the first and the second metal radiators at the lower parts are close in size, opposite in phase and similar in magnetic field, and the antiphase electromagnetic wave excited by the first and the second metal radiators can cause destructive interference after arriving the HAC test surface, thereby improving the HAC characters of the multiband monopole antenna.
Description
Technical field
The utility model refers to a kind of multiband unipole antenna of the HAC of improvement characteristic especially about a kind of antenna assembly of wireless telecommunications system.
Background technology
The wireless communication technique development fast, general communication apparatus, for example mobile phone or personal digital assistant etc., normal reception and the transmission of using multiband to make wireless signal, for example: Global System for Mobile Communication (Global System forMobile communications, GSM), scattered control system (distributed control system, DCS), person-to-person communication service (Personal Communication Service, PCS), advanced action telephone system (Advanced Mobile Phone System, AMPS), personal digital honeycomb (Personal DigitalCellular, PDC), the multiple access of demal (Code Division Multiple Access, CDMA) etc.Simultaneously, under the requirement of handheld device consolidationization, the structure of antenna also is required compression, makes unipole antenna (monopole antenna) also can be designed to be assembled in the form in the casing.
For example, at United States Patent (USP) 7,405, in the preceding case of 701 " multiband bent monopole antenna (Multi-band bentmonopole antenna) ", just provided a kind of such multiband unipole antenna.Its main antenna element (main antenna element) close position that mainly ties up to a bending is provided with a parasitic antenna (parasitic element), and selects loop (selection circuit) to control this parasitic antenna with one.When this antenna during at high-frequency operation, main antenna element capacitively is coupled (capacitive coupling) in parasitic antenna; But, select the loop will make capacitive couplings lose efficacy when when low frequency is operated.In view of the above, make unipole antenna under multiband, to operate.
Yet such multiband unipole antenna is in the poor effect of hearing aids compatibility (hearing aid compatibility is called for short HAC) test.Antenna is in mobile phone, and hearing aids compatibility (hearing aidcompatibility is called for short HAC) is now by standard.The standardisation bodies ANSI of the U.S. (AmericanNational Standards Institute) has formulated the specification of ANSI C63.19, FCC requires mobile-phone manufacturers and cellular service merchant after 18 days February in 2008, and defeated U.S. product must have the product more than 50% to satisfy the regulation of ANSI C63.19 about hearing aids EMI restriction.
Be similar to United States Patent (USP) 7,405, cases before 701 at a kind of known multiband unipole antenna 91 of Figure 1 and Figure 2, are to be connected with a printed circuit board (PCB) 92 and to be assembled with a feed side 911.This antenna 91 is of a size of 37mm * 18mm * 8mm, and the height of this printed circuit board (PCB) 92 is 2mm, long * wide be 110mm * 50mm, and the headroom district 93 on the printed circuit board (PCB) 92 is of a size of 21mm * 50mm.Disclosed HAC test electric field and the Distribution of Magnetic Field result of this multiband unipole antenna 91 under low-frequency range (900MHz) in Fig. 3, the 4th figure then is HAC test electric field and the Distribution of Magnetic Field result under high band (1800MHz).By the high frequency band test result of Fig. 4, the known multiband unipole antenna of this kind still has the suitable space of improving on the HAC characteristic as can be known.
Summary of the invention
The utility model purpose is, a kind of multiband unipole antenna of the HAC of improvement characteristic is provided, so that the multiband unipole antenna can have preferable HAC characteristic.
According to above-mentioned purpose, a kind of multiband unipole antenna that improves the HAC characteristic is characterized in that, comprising:
A pair of in order to motivating first and second metal radiant body of high band respectively, both are alternate and move towards identical setting; This first metal radiant body has a feed side, and this second metal radiant body has a link, and this feed side is positioned at identical lateral margin with link; And
One in order to motivate the tortuous winding section of low-frequency range, and the one end is connected in the feed side of this first metal radiant body, and another end is connected in the link of this second metal radiant body, and this complications coiling position is at the homonymy of this first and second metal radiant body;
Electric path length that wherein should the complications winding section is greater than λ/2 of this high band, and the current and phase difference of this feed side and this link is π.
Wherein, first and second metal radiant body is parallel to each other.
Wherein, the spacing between first and second metal radiant body is within high band 0.2 λ.
Wherein, this unipole antenna is of a size of 35mm * 18mm * 8mm, and the length of this first metal radiant body is 30mm, and the length of this second metal radiant body is 32mm, the length of this complications winding section is 71mm, and the spacing between this first and second metal radiant body is 11mm.
Wherein, this unipole antenna is installed in the headroom district on the printed circuit board (PCB); The height of this printed circuit board (PCB) is 2mm, and long * wide be 110mm * 50mm, and this headroom district is of a size of 21mm * 50mm.
Wherein, tortuous winding section is a level to the complications form that winds the line.
Wherein, tortuous winding section is for vertically to complications coilings form.
This first and second metal radiant body below partly, the electric field level that both produce is close, phase place is opposite, magnetic field is also same, and on the antiphase electromagnetic wave that first and second metal radiant body the excites arrival HAC test surfaces destruction interference takes place, to improve the HAC characteristic of this multiband unipole antenna.
A kind of multiband unipole antenna that improves the HAC characteristic provided by the utility model compares with well-known antenna, and is little in the electric field and the changes of magnetic field of low-frequency range (900MHz); And under high band (1800MHz), electric field of the present utility model can improve 5.1dB than well-known antenna, and the utility model magnetic field reaches and improves HAC characteristic (HAC performance) than the good 2.5dB of well-known antenna.
In addition, the tortuous winding section in the utility model can have multiple different coiling form, for example in level to complications coilings form or vertically to complications coiling form.
Below, will design feature of the present utility model and effect be described in detail according to the embodiment shown in the drawing.
Description of drawings
Fig. 1 represents a kind of stereogram of known multiband unipole antenna,
Fig. 2 presentation graphs 1 known multiband unipole antenna is assemblied in the plan view of printed circuit board (PCB),
HAC test electric field and the Distribution of Magnetic Field result of Fig. 3 presentation graphs 1 known multiband unipole antenna under low-frequency range (900MHz),
HAC test electric field and the Distribution of Magnetic Field result of Fig. 4 presentation graphs 1 known multiband unipole antenna under high band (1800MHz),
Fig. 5 represents the stereogram of the utility model multiband unipole antenna,
Fig. 6 represents another angle stereogram of the utility model multiband unipole antenna,
Fig. 7 represents that the utility model multiband unipole antenna is installed in the stereogram in the printed circuit board (PCB) headroom district,
Fig. 8 represents voltage standing wave ratio (VSWR) test result of the utility model multiband unipole antenna,
Fig. 9 represents HAC test electric field and the Distribution of Magnetic Field result of the utility model multiband unipole antenna under low-frequency range (900MHz),
Figure 10 represents HAC test electric field and the Distribution of Magnetic Field result of the utility model multiband unipole antenna under high band (1800MHz),
Figure 11 represents the stereogram of the another kind of embodiment of the utility model,
Figure 12 represents another angular views of Figure 11 embodiment.
Embodiment
See also Fig. 5 and Fig. 6, multiband unipole antenna provided by the utility model, its structure is mainly constituted with a pair of first and second metal radiant body 1,2 and one tortuous winding section 3.
The first metal radiant body 1 and the second metal radiant body 2 motivate high band respectively, DCS/PCS for example, and both are alternate, preferably to be parallel to each other and to move towards identical and be provided with; The first metal radiant body 1 shown in the figure and the second metal radiant body 2 are rectangle, but also can crooked shape or other shapes, as long as keep both to be about parallel.
The first metal radiant body 1 has a feed side 11, and the second metal radiant body 2 has a link 21, and this feed side 11 is positioned at identical lateral margin with link 21.
One end of tortuous winding section 3 is connected in the feed side 11 of the first metal radiant body 1, and another end is connected in the link 21 of this second metal radiant body 2, make 3 the homonymies in tortuous winding section at the first metal radiant body 1 and the second metal radiant body 2, and motivate low-frequency range, for example GSM850/GSM900.In this embodiment, tortuous winding section 3 be for level to the complications form that winds the line.
The basic concept of the utility model design adopts destruction interference (destructed interference), reaches the HAC characteristic of improving antenna.
In the structure of the utility model multiband unipole antenna, the electric path length of tortuous winding section 3 is designed to be slightly larger than λ/2 of high band, and the feed side 11 that makes the first metal radiant body 1 is about π (180 spend) with the current and phase difference of the link 21 of the second metal radiant body 2.This will make win metal radiant body 1 and the second metal radiant body 2 below partly, the electric field level that both produce is close, phase place is opposite, magnetic field also together, and destruction interference takes place on the antiphase electromagnetic wave that first and second metal radiant body 1,2 the excites arrival HAC test surfaces, to improve the HAC characteristic of this multiband unipole antenna.
The person of advancing, the spacing between the first metal radiant body 1 and the second metal radiant body 2 can effectively be controlled magnetic field, near field and electric field.The electric field that the electric field that the first metal radiant body 1 produces and the second metal radiant body 2 produce under antenna partly the time direction consistent, but phase place is opposite.For magnetic field, magnetic field also disappears under antenna mutually.And the test surfaces of antenna HAC is much larger than the antenna aperture area, and the distance that the first metal radiant body 1 and the second metal radiant body 2 antiphase electromagnetic wave that excites arrive on the HAC test surfaces does not wait, and has caused the destruction interference generation again.Therefore, spacing principle between the first metal radiant body 1 and the second metal radiant body 2 is that 0.7 λ to 0.5 λ (because phase shift causes) of high band is good, be similar to supergain antenna, but because the phase change of 0.5 λ has been caused in tortuous winding section 3, thus in this antenna the spacing between the first metal radiant body 1 and the second metal radiant body 2 real be to be good within 0.2 λ of high band.
Suitable selection first metal radiant body 1 and the spacing between the second metal radiant body 2 can make the electric field of antenna improve 5dB, and 2dB are improved in magnetic field.
As for low-frequency range, for example the GSM850/GSM900 frequency range is to be excited by tortuous winding section 3, so and the near-field effect of general unipole antenna do not have much differences.
Below a size is similar to known multiband unipole antenna in the prior art compare both HAC test result of embodiment, progressive function of the present utility model is described.
With Fig. 5 and multiband unipole antenna shown in Figure 6, design it and be of a size of 35mm * 18mm * 8mm, and the length of this first metal radiant body is 30mm, and the length of the second metal radiant body is 32mm, the length of tortuous winding section 3 is 71mm, and to select the spacing between the first metal radiant body 1 and the second metal radiant body 2 be 11mm.Referring to Fig. 7, this multiband unipole antenna is installed in the headroom district 41 on the printed circuit board (PCB) 4, and the height of this printed circuit board (PCB) 4 is 2mm, and long * wide be 110mm * 50mm, and the headroom district is of a size of 21mm * 50mm.
Voltage standing wave ratio (VSWR) test result that has shown this embodiment antenna in Fig. 8 shows that this antenna can a low-frequency range (900MHz) and a high band (1800MHz) operation.Fig. 9 is HAC test electric field and the Distribution of Magnetic Field result under low-frequency range (900MHz), and Figure 10 then is HAC test electric field and the Distribution of Magnetic Field result under high band (1800MHz).
Fig. 9 and Figure 10 are compared with Fig. 3 and Fig. 4, can get following table:
Nine palace lattice are the nine palace lattice that are same as HAC test plane in table, and the form in each lattice is " well-known antenna/the utility model antenna ", in addition, and "+" table electric field or magnetic field improvement value, and "-" table electric field or magnetic field impairment value.
Can obtain to draw a conclusion by last table:
1. the electric field of the utility model antenna and well-known antenna or changes of magnetic field are little under the 900MHz frequency range.
2. the electric field of the utility model antenna and well-known antenna has improved about 5.1dB under the 1800MHz frequency range, and the good slightly 2.5dB in magnetic field (ginseng sees the above table the last cell lattice of nine palace lattice).
The person of advancing referring to Figure 11 and Figure 12, is another kind of embodiment of the present utility model, and in this embodiment, the first metal radiant body 1 has a feed side 11, and the second metal radiant body 2 has a link 21; And an end of tortuous winding section 3 is connected in the feed side 11 of the first metal radiant body 1, and another end is connected in the link 21 of this second metal radiant body 2, and motivates low-frequency range.And different with last embodiment institute, tortuous winding section 3 is for vertically to complications coiling form.
To sum up institute is old, and multiband unipole antenna provided by the utility model has utilized interference theory and project organization, to reach the function of improving antenna HAC characteristic.
And only be preferred embodiment of the present utility model shown in the above drawing, therefore be not limited to claim of the present utility model.In every case the simple and easy change of being done according to the utility model technological thought, for example first and second metal radiant body trend is different coiling form in bending or tortuous winding section etc., all still belongs in the claim protection.
Claims (7)
1. a multiband unipole antenna that improves the HAC characteristic is characterized in that, comprising:
A pair of in order to motivating first and second metal radiant body of high band respectively, both are alternate and move towards identical setting; This first metal radiant body has a feed side, and this second metal radiant body has a link, and this feed side is positioned at identical lateral margin with link; And
One in order to motivate the tortuous winding section of low-frequency range, and the one end is connected in the feed side of this first metal radiant body, and another end is connected in the link of this second metal radiant body, and this complications coiling position is at the homonymy of this first and second metal radiant body;
Electric path length that wherein should the complications winding section is greater than λ/2 of this high band, and the current and phase difference of this feed side and this link is π.
2. according to the described multiband unipole antenna that improves the HAC characteristic of claim 1, it is characterized in that first and second metal radiant body is parallel to each other.
3. according to the described multiband unipole antenna that improves the HAC characteristic of claim 1, it is characterized in that the spacing between first and second metal radiant body is within high band 0.2 λ.
4. according to the described multiband unipole antenna that improves the HAC characteristic of claim 1, it is characterized in that, this unipole antenna is of a size of 35mm * 18mm * 8mm, and the length of this first metal radiant body is 30mm, and the length of this second metal radiant body is 32mm, the length of this complications winding section is 71mm, and the spacing between this first and second metal radiant body is 11mm.
5. according to the described multiband unipole antenna that improves the HAC characteristic of claim 4, it is characterized in that this unipole antenna is installed in the headroom district on the printed circuit board (PCB); The height of this printed circuit board (PCB) is 2mm, and long * wide be 110mm * 50mm, and this headroom district is of a size of 21mm * 50mm.
6. according to the described multiband unipole antenna that improves the HAC characteristic of claim 1, it is characterized in that tortuous winding section is a level to the complications form that winds the line.
7. according to the described multiband unipole antenna that improves the HAC characteristic of claim 1, it is characterized in that tortuous winding section is for vertically to complications coilings form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201359740U CN201319403Y (en) | 2008-09-27 | 2008-09-27 | Multiband monopole antenna capable of improving HAC characteristics |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008201359740U CN201319403Y (en) | 2008-09-27 | 2008-09-27 | Multiband monopole antenna capable of improving HAC characteristics |
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| CN201319403Y true CN201319403Y (en) | 2009-09-30 |
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| CNU2008201359740U Expired - Lifetime CN201319403Y (en) | 2008-09-27 | 2008-09-27 | Multiband monopole antenna capable of improving HAC characteristics |
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Cited By (9)
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| CN102013895A (en) * | 2010-12-13 | 2011-04-13 | 惠州市硕贝德通讯科技有限公司 | Method for solving electromagnetic compatibility problem of antenna of minitype terminal mobile phone |
| CN102437410A (en) * | 2011-09-19 | 2012-05-02 | 惠州硕贝德无线科技股份有限公司 | Method for improving electromagnetic compatibility of mobile phone antenna and hearing-aid |
| CN102545930A (en) * | 2010-12-16 | 2012-07-04 | 深圳富泰宏精密工业有限公司 | Wireless communicator |
| CN102714353A (en) * | 2009-11-27 | 2012-10-03 | 脉冲芬兰有限公司 | Mimo antenna |
| CN108183322A (en) * | 2017-12-28 | 2018-06-19 | 东莞市仁丰电子科技有限公司 | A kind of multiband three-in-one antenna |
| CN109659687A (en) * | 2019-01-23 | 2019-04-19 | 杭州电子科技大学 | A kind of six unit multiband mimo antennas suitable for 5G mobile terminal |
| CN109950690A (en) * | 2017-12-21 | 2019-06-28 | 华为技术有限公司 | A kind of antenna and terminal |
| US11362420B1 (en) | 2021-05-18 | 2022-06-14 | Changsha Chixin Semiconductor Tech Co., Ltd. | Miniaturized printed ultra-wideband and bluetooth antenna |
| WO2022242146A1 (en) * | 2021-05-18 | 2022-11-24 | 长沙驰芯半导体科技有限公司 | Miniaturised ultra-wideband and bluetooth printed antenna |
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- 2008-09-27 CN CNU2008201359740U patent/CN201319403Y/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102714353A (en) * | 2009-11-27 | 2012-10-03 | 脉冲芬兰有限公司 | Mimo antenna |
| US9461371B2 (en) | 2009-11-27 | 2016-10-04 | Pulse Finland Oy | MIMO antenna and methods |
| CN102714353B (en) * | 2009-11-27 | 2015-11-25 | 脉冲芬兰有限公司 | Mimo antenna |
| CN102013895B (en) * | 2010-12-13 | 2013-06-19 | 惠州硕贝德无线科技股份有限公司 | Method for solving electromagnetic compatibility problem of antenna of minitype terminal mobile phone |
| CN102013895A (en) * | 2010-12-13 | 2011-04-13 | 惠州市硕贝德通讯科技有限公司 | Method for solving electromagnetic compatibility problem of antenna of minitype terminal mobile phone |
| CN102545930B (en) * | 2010-12-16 | 2015-03-11 | 深圳富泰宏精密工业有限公司 | Wireless communicator |
| CN102545930A (en) * | 2010-12-16 | 2012-07-04 | 深圳富泰宏精密工业有限公司 | Wireless communicator |
| CN102437410B (en) * | 2011-09-19 | 2015-07-29 | 惠州硕贝德无线科技股份有限公司 | Promote the method for antenna for mobile phone and hearing aids Electro Magnetic Compatibility |
| CN102437410A (en) * | 2011-09-19 | 2012-05-02 | 惠州硕贝德无线科技股份有限公司 | Method for improving electromagnetic compatibility of mobile phone antenna and hearing-aid |
| US11251534B2 (en) | 2017-12-21 | 2022-02-15 | Huawei Technologies Co., Ltd. | Antenna and terminal |
| CN109950690A (en) * | 2017-12-21 | 2019-06-28 | 华为技术有限公司 | A kind of antenna and terminal |
| CN109950690B (en) * | 2017-12-21 | 2020-11-17 | 华为技术有限公司 | Antenna and terminal |
| CN108183322A (en) * | 2017-12-28 | 2018-06-19 | 东莞市仁丰电子科技有限公司 | A kind of multiband three-in-one antenna |
| CN108183322B (en) * | 2017-12-28 | 2024-02-06 | 东莞市仁丰电子科技有限公司 | Multiband three-in-one antenna |
| CN109659687A (en) * | 2019-01-23 | 2019-04-19 | 杭州电子科技大学 | A kind of six unit multiband mimo antennas suitable for 5G mobile terminal |
| US11362420B1 (en) | 2021-05-18 | 2022-06-14 | Changsha Chixin Semiconductor Tech Co., Ltd. | Miniaturized printed ultra-wideband and bluetooth antenna |
| WO2022242146A1 (en) * | 2021-05-18 | 2022-11-24 | 长沙驰芯半导体科技有限公司 | Miniaturised ultra-wideband and bluetooth printed antenna |
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Owner name: AUDEN COMMUNICATIONS + MULTIMEDIA TECHNOLOGY (KUNS Free format text: FORMER OWNER: YAODENG SCIENCE AND TECHONLOGY CO., LTD Effective date: 20110607 |
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Effective date of registration: 20110607 Address after: 215313 Jiangsu Province Lu Yang Kunshan City Yingbin Road No. 15 Patentee after: YAODENG DIANTONG TECHNOLOGY (KUNSHAN) CO., LTD. Address before: China Taiwan Taoyuan County Patentee before: Yaodeng Science and Techonlogy Co., Ltd |
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