CN102544695B - Multi-frequency antenna - Google Patents
Multi-frequency antenna Download PDFInfo
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- CN102544695B CN102544695B CN201010614527.5A CN201010614527A CN102544695B CN 102544695 B CN102544695 B CN 102544695B CN 201010614527 A CN201010614527 A CN 201010614527A CN 102544695 B CN102544695 B CN 102544695B
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- feeding portion
- radiating element
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- multifrequency antenna
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Abstract
The invention provides a multi-frequency antenna, which comprises a feed-in terminal, a grounding terminal, a radiator and a resonance unit. The radiator comprises a first radiation unit, a second radiation unit and a third radiation unit, wherein all the first, second and third radiation units are connected to the feed-in terminal. The resonance unit comprises a first resonance part and a second resonance part, wherein both the first and second resonance parts are connected to the grounding terminal. When the multi-frequency antenna works, the second radiation unit, the second resonance part and the third radiation unit stimulate a corresponding low-frequency resonant mode respectively, and the first radiation unit and the first resonance part stimulate a corresponding high-frequency resonant mode respectively, so that the bandwidth of the multi-frequency antenna is expanded.
Description
Technical field
The present invention relates to a kind of antenna, particularly relate to a kind of multifrequency antenna.
Background technology
At mobile phone, personal digital assistant (personal digital assistant, etc. PDA) in radio communication device, antenna, as in order to the parts by radio wave radio signals, is undoubtedly one of most important assembly in radio communication device.
Current most of radio communication device has all possessed and has carried out in two or more frequency range the function that communicates.Therefore, in order to meet the demand of user, need to adopt multi-frequency antenna device.So the existing multifrequency antenna being applied to radio communication device is generally because structure is comparatively simple, only cannot meet the signal transmitting and receiving demand of multiple frequency range with this body structure simultaneously, therefore generally set up the commutation circuit of the electronic component such as diverter switch, variable capacitance in a wireless communication device to regulate the resonance frequency of antenna, to reach the object of broadband connections.Obviously, the complex structure of radio communication device and cost of manufacture must be caused like this to increase.
Summary of the invention
For the problems referred to above, be necessary to provide a kind of communication band broad and lower-cost multifrequency antenna.
A kind of multifrequency antenna, comprise feed side, earth terminal, radiant body and resonating member, this radiant body comprises the first radiating element, second radiating element and the 3rd radiating element, this first radiating element, second radiating element and the 3rd radiating element are all connected to this feed side, described resonating member comprises the first resonance part and the second resonance part, this first resonance part and the second resonance part are all connected to earth terminal, during described multifrequency antenna work, described second radiating element, second resonance part and the 3rd radiating element inspire corresponding low-frequency resonant mode respectively, described first radiating element and the first resonance part then inspire corresponding high-frequency resonant mode, to widen the frequency range of described multifrequency antenna.
Above-mentioned multifrequency antenna operationally can produce multiple resonance frequency, effectively increases frequency range, makes the frequency range scope of this multifrequency antenna can contain multiple communication system, enhances the versatility of multifrequency antenna.In addition, multifrequency antenna of the present invention does not need to arrange the commutation circuit comprising the electronic building brick such as diverter switch, variable capacitance, for being conducive to the structure simplifying wireless communication apparatus during radio communication device, effectively reduces cost of manufacture.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the multifrequency antenna of present pre-ferred embodiments.
Fig. 2 is the schematic perspective view under another angle of multifrequency antenna shown in Fig. 1.
The return loss schematic diagram that Fig. 3 is multifrequency antenna shown in Fig. 1.
Main element symbol description
Multifrequency antenna 100
Feed side 11
Earth terminal 12
Radiant body 13
Resonating member 14
First earth terminal 121
Second earth terminal 122
First radiating element 131
Second radiating element 132
3rd radiating element 133
First resonance part 141
Second resonance part 142
Feeding portion 1311
Department of Radiation 1312
Extension 1313
Inductance L 1, L2, L3
Connecting portion 1321
Kink 1322
Bend 1331
Ground section 1411
Resonance paragraph 1412
Changeover portion 1421
Extension 1422
First bending segment 1323
Second bending segment 1324
First bending section 1332
Second bending section 1333
Embodiment
Refer to Fig. 1, the invention provides a kind of multifrequency antenna 100, be installed in the radio communication device such as mobile phone, personal digital assistant (personal digital assistant, PDA), and carry out launching, receiving radio wave with radio signals in multiple frequency range.
This multifrequency antenna 100 is a stereoscopic antenna, and the lamellar body be made up of electric conducting materials such as metals is made, and comprises feed side 11, earth terminal 12, radiant body 13 and resonating member 14.
This feed side 11 is vertical bar shape lamellar body, and itself and the traditional Signal transmissions end (not shown) be arranged on the circuit board of radio communication device inside are electrically connected, and think that described multifrequency antenna 100 plays signal feed-in effect.
This earth terminal 12 comprises the first earth terminal 121 and the second earth terminal 122, this first earth terminal 121 is vertical bar shape lamellar body, be arranged on in the plane of place, feed side 11 plane being perpendicular, this first earth terminal 121 is connected to the traditional grounded part on described circuit board, thinks that described multifrequency antenna 100 provides ground connection to act on.This second earth terminal 122 is strip lamellar body, and be arranged on this place, feed side 11 plane, its one end is vertically connected to the end of this first earth terminal 121, and the other end extends along the direction parallel with this feed side 11, and is connected to resonating member 14.
This radiant body 13 is a unipole antenna (monopole antenna), comprises the first radiating element 131, second radiating element 132 and the 3rd radiating element 133.This first radiating element 131 is an inverted F shaped antenna (planar inverted-F antenna, PIFA), comprises feeding portion 1311, Department of Radiation 1312 and extension 1313.This feeding portion 1311 is strip lamellar body always, and be arranged on in another plane of place, feed side 11 plane being perpendicular, it is vertically connected to the end of described feed side 11, for providing signal feed-in effect for described radiant body 13.This Department of Radiation 1312 is a lamellar body with curved structure, is laid in described feeding portion 1311 place plane.Particularly, one end of this Department of Radiation 1312 is connected to the end of this feeding portion 1311, after the other end extends a segment distance along the direction of this feeding portion 1311 vertical, bend a right angle, to extend one comparatively after short distance along parallel and away from this feeding portion 1311 direction, bend a right angle again, to continue to extend along vertical and away from feeding portion 1311 direction.This extension 1313 is a strip shape body, its one end is connected to the side of this Department of Radiation 1312, after the other end extends a segment distance along this feeding portion 1311 parallel and away from the direction of Department of Radiation 1312, bend a right angle, to continue along the direction being parallel to feed side 11 to extend, and then this extension 1313 part is made to be laid in this feed side 11 institute planar.
See also Fig. 2, this second radiating element 132 comprises inductance L 1, connecting portion 1321 and kink 1322.This connecting portion 1321 is the strip lamellar body roughly in " L " type, its one end is connected to the side of extension 1313 feeding portion 1311 dorsad by this inductance L 1, after the other end extends one section of longer distance along the direction of this feeding portion 1311 vertical, bend a right angle, to extend a comparatively short distance along the direction being parallel to this feeding portion 1311, and be connected with this kink 1322.This kink 1322 is laid in the plane that parallels with feed side 11, comprises the first bending segment 1323 and the second bending segment 1324, and this first bending segment 1323 is strip lamellar body always, and it is vertically connected to the end of this connecting portion 1321.This second bending segment 1324 is the strip lamellar body that a length is greater than the first bending segment 1323, and it is vertically connected to the end away from connecting portion 1321 in this first bending segment 1323, to be formed roughly in the list structure of " L " type with this first bending segment 1323.
3rd radiating element 133 comprises inductance L 2 and bend 1331, and this bend 1331 comprises the first bending section 1332 and the second bending section 1333.One end of this first bending section 1332 is connected to the end of feeding portion 1311 and Department of Radiation 1312 by this inductance L 2, after the other end extends a longer distance along the direction perpendicular to feeding portion 1311, bend a right angle, to extend along this feeding portion 1311 parallel and away from the direction of Department of Radiation 1312, and be connected with this second bending section 1333.This second bending section 1333 is strip lamellar body always, it is laid in this kink 1322 institute planar, its one end is vertically connected to the end of the first bending section 1332, and the other end is along this second bending segment 1324 parallel and extend near the direction of this first bending segment 1323.
This resonating member 14 comprises the first resonance part 141 and the second resonance part 142, and this first resonance part 141 comprises ground section 1411 and resonance paragraph 1412.This ground section 1411 is a strip lamellar body, and it is arranged on this feeding portion 1311 institute planar.One end of this ground section 1411 is connected to the end of earth terminal 12, and the other end extends along the direction being parallel to this feeding portion 1311.This resonance paragraph 1412 is a strip lamellar body, its be arranged on this kink 1322 and the second bending section 1333 institute planar, its one end is vertically connected to the end of this ground section 1411, and the other end is along this second bending segment 1324 parallel and extend near the direction of this kink 1322.
This second resonance part 142 comprises inductance L 3, changeover portion 1421 and extension 1422.This changeover portion 1421 is one roughly in the strip lamellar body of " L " type, be laid in this feeding portion 1311 institute planar, its one end is connected to the end of this earth terminal 12 and ground section 1411 by this inductance L 3, the other end is along vertical and extend one comparatively after short distance away from the direction of this feeding portion 1311, bend a right angle, extend with the direction along this feeding portion 1311 parallel, and be connected with this extension 1422.This extension 1422 is one roughly in the strip lamellar body of " L " type, and entirety is laid in this kink 1322 institute planar.One end of this extension 1422 is vertically connected to the end of this changeover portion 1421, the other end bends a right angle after extending a segment distance along the direction of this first bending segment 1323 parallel, to extend along this second bending segment 1324 parallel near the direction of kink 1322.
When described multifrequency antenna 100 works, signal is after feed side 11 enters, can respectively along the second radiating element 132, second resonance part 142, 3rd radiating element 133, first radiating element 131 and the first resonance part 141 obtain the propagation path of different length, and produce different current signals, make this multifrequency antenna 100 can successively in 700MHz, 800MHz, 930MHz, 1700MHz and 2400MHz produces corresponding resonance mode, and then this multifrequency antenna 100 can be worked respectively under multiple conventional wireless communication frequency bands such as LTE/GSM/EGSM/DCS/PCS/WCDMA, effectively widen the frequency range of this multifrequency antenna 100.
Refer to Fig. 3, what be depicted as multifrequency antenna 100 of the present invention returns loss (return loss, RL) measurement result schematic diagram.As can be seen from Figure, this multifrequency antenna all can meet Antenna Operation designing requirement under the operating frequency of 700MHz, 800MHz, 930MHz, 1700MHz and 2400MHz.
Obviously, multifrequency antenna 100 of the present invention operationally can produce multiple resonance frequency, effectively increases frequency range, makes the frequency range scope of this multifrequency antenna 100 can contain multiple communication system, enhances the versatility of multifrequency antenna 100.In addition, multifrequency antenna 100 of the present invention does not need to arrange the commutation circuit comprising the electronic building brick such as diverter switch, variable capacitance, is conducive to the structure simplifying radio communication device, effectively reduces cost of manufacture when being applied to radio communication device.
Claims (8)
1. a multifrequency antenna, comprise feed side, earth terminal, radiant body and resonating member, this radiant body comprises the first radiating element, second radiating element and the 3rd radiating element, this first radiating element, second radiating element and the 3rd radiating element are all connected to this feed side, described first radiating element comprises feeding portion, Department of Radiation and extension, this feeding portion is arranged on in the plane of place, feed side plane being perpendicular, and be vertically connected to the end of described feed side, this Department of Radiation is laid in described feeding portion place plane, one end of this extension is connected to the side of this Department of Radiation, after the other end extends a segment distance along this feeding portion parallel and away from the direction of Department of Radiation, bend a right angle, to continue along the direction being parallel to feed side to extend, and then make this extension part be laid in this feed side institute planar, described resonating member comprises the first resonance part and the second resonance part, this first resonance part and the second resonance part are all connected to earth terminal, during described multifrequency antenna work, described second radiating element, second resonance part and the 3rd radiating element inspire corresponding low-frequency resonant mode respectively, described first radiating element and the first resonance part then inspire corresponding high-frequency resonant mode, to widen the frequency range of described multifrequency antenna.
2. multifrequency antenna as claimed in claim 1, is characterized in that: this radiant body is a unipole antenna.
3. multifrequency antenna as claimed in claim 1, is characterized in that: this feeding portion is strip lamellar body always, and this Department of Radiation is a lamellar body with curved structure, and this extension is a strip shape body.
4. multifrequency antenna as claimed in claim 3, it is characterized in that: one end of this Department of Radiation is connected to the end of this feeding portion, after the other end extends a segment distance along the direction of this feeding portion vertical, bend a right angle, to extend one comparatively after short distance along parallel and away from this feeding portion direction, bend a right angle again, to continue to extend along vertical and away from feeding portion direction.
5. multifrequency antenna as claimed in claim 3, it is characterized in that: this second radiating element comprises inductance (L1), connecting portion and kink, this connecting portion is the strip lamellar body in " L " type, its one end is connected to the side of extension feeding portion dorsad by described inductance (L1), after the other end extends one section of longer distance along the direction of this feeding portion vertical, bend a right angle, to extend a comparatively short distance along the direction being parallel to this feeding portion, and be connected with this kink, this kink is laid in the plane that parallels with feed side, comprise the first bending segment and the second bending segment, this first bending segment is strip lamellar body always, it is vertically connected to the end of this connecting portion, this second bending segment is a strip lamellar body, it is vertically connected to the end away from connecting portion in this first bending segment, to be formed roughly in the list structure of " L " type with this first bending segment.
6. multifrequency antenna as claimed in claim 5, it is characterized in that: the 3rd radiating element comprises inductance (L2) and bend, this bend comprises the first bending section and the second bending section, one end of this first bending section is connected to the end of feeding portion and Department of Radiation by this inductance (L2), after the other end extends a longer distance along the direction perpendicular to feeding portion, bend a right angle, to extend along this feeding portion parallel and away from the direction of Department of Radiation, and be connected with this second bending section, this second bending section is strip lamellar body always, it is laid in this kink institute planar, its one end is vertically connected to the end of the first bending section, the other end is along this second bending segment parallel and extend near the direction of this first bending segment.
7. multifrequency antenna as claimed in claim 5, it is characterized in that: this first resonance part comprises ground section and resonance paragraph, this ground section is a strip lamellar body, it is arranged on this feeding portion institute planar, one end of this ground section is connected to the end of earth terminal, the other end extends along the direction being parallel to this feeding portion, this resonance paragraph is a strip lamellar body, it is arranged on this kink place plane, its one end is vertically connected to the end of this ground section, and the other end is along this second bending segment parallel and extend near the direction of this kink.
8. multifrequency antenna as claimed in claim 5, it is characterized in that: this second resonance part comprises inductance (L3), changeover portion and extension, this changeover portion is one in the strip lamellar body of " L " type, be laid in this feeding portion institute planar, its one end is connected to the end of this earth terminal by described inductance (L3), the other end is along vertical and extend one comparatively after short distance away from the direction of this feeding portion, bend a right angle, vertically to extend along the direction of this feeding portion parallel, and be connected with this extension, this extension is one in the strip lamellar body of " L " type, entirety is laid in this kink institute planar, one end of this extension is vertically connected to the end of this changeover portion, after the other end extends a segment distance along the direction of this first bending segment parallel, bend a right angle, to extend near the direction of kink along this second bending segment parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010614527.5A CN102544695B (en) | 2010-12-30 | 2010-12-30 | Multi-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010614527.5A CN102544695B (en) | 2010-12-30 | 2010-12-30 | Multi-frequency antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102544695A CN102544695A (en) | 2012-07-04 |
| CN102544695B true CN102544695B (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010614527.5A Expired - Fee Related CN102544695B (en) | 2010-12-30 | 2010-12-30 | Multi-frequency antenna |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241871B (en) * | 2013-06-06 | 2019-07-12 | 深圳富泰宏精密工业有限公司 | The wireless communication device of multifrequency antenna and the application multifrequency antenna |
| CN104425888B (en) * | 2013-08-30 | 2019-11-22 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device with the antenna structure |
| CN107369889B (en) * | 2017-08-04 | 2021-04-13 | 苏州优尼赛信息科技有限公司 | Compact dual-band linearly polarized monopole antenna |
| CN110048214A (en) * | 2019-03-05 | 2019-07-23 | 惠州Tcl移动通信有限公司 | A kind of antenna and wireless communication apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1701465A (en) * | 2003-06-09 | 2005-11-23 | 松下电器产业株式会社 | Antenna and electronic device using the same |
| CN101208825A (en) * | 2005-06-28 | 2008-06-25 | 脉冲芬兰有限公司 | Internal multiband antenna |
| CN101345341A (en) * | 2007-07-13 | 2009-01-14 | 清华大学 | Multiband antenna |
| CN101640307A (en) * | 2008-07-30 | 2010-02-03 | 深圳富泰宏精密工业有限公司 | Multi-frequency antenna and wireless communication device with same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6650294B2 (en) * | 2001-11-26 | 2003-11-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Compact broadband antenna |
| TWI279030B (en) * | 2004-06-21 | 2007-04-11 | Accton Technology Corp | Antenna and antenna array |
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2010
- 2010-12-30 CN CN201010614527.5A patent/CN102544695B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1701465A (en) * | 2003-06-09 | 2005-11-23 | 松下电器产业株式会社 | Antenna and electronic device using the same |
| CN101208825A (en) * | 2005-06-28 | 2008-06-25 | 脉冲芬兰有限公司 | Internal multiband antenna |
| CN101345341A (en) * | 2007-07-13 | 2009-01-14 | 清华大学 | Multiband antenna |
| CN101640307A (en) * | 2008-07-30 | 2010-02-03 | 深圳富泰宏精密工业有限公司 | Multi-frequency antenna and wireless communication device with same |
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| CN102544695A (en) | 2012-07-04 |
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Granted publication date: 20150204 Termination date: 20191230 |