CN102570037A - Multifrequency antenna - Google Patents
Multifrequency antenna Download PDFInfo
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- CN102570037A CN102570037A CN2010106113486A CN201010611348A CN102570037A CN 102570037 A CN102570037 A CN 102570037A CN 2010106113486 A CN2010106113486 A CN 2010106113486A CN 201010611348 A CN201010611348 A CN 201010611348A CN 102570037 A CN102570037 A CN 102570037A
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Abstract
The invention provides a multifrequency antenna, which comprises a feed end, a first grounding end, a second grounding end, a radiation unit, a resonance unit and a bending unit, wherein the first grounding end and the second grounding end are arranged in a plane vertical to the feed end; the radiation unit is connected to the feed end and the bending unit; the resonance unit is arranged at one side of the radiation unit and connected to the first grounding end; and the bending unit is connected to the second grounding end. When the multifrequency antenna works, a signal enters from the feed end and can respectively acquire propagation paths with different lengths along the radiation unit, the resonance unit and the bending unit so as to generate different signals, and furthermore, the multifrequency antenna has multiple working frequency bands.
Description
Technical field
The present invention relates to a kind of antenna, relate in particular to a kind of multifrequency antenna.
Background technology
(personal digital assistant PDA) waits in the radio communication device, and antenna is undoubtedly one of most important assembly in the radio communication device as in order to the parts through the radio wave transmitting/receiving wireless signal of telecommunication in mobile phone, personal digital assistant.
Present most of radio communication device has all possessed the function that communicates with super band at two.Therefore, in order to satisfy user's demand, need to adopt multi-frequency antenna device.Right existing multifrequency antenna versatility is still relatively poor mostly, generally can only be used to receive and dispatch the signal of two frequency ranges, is difficult for satisfying simultaneously three communicating requirements with super band.
Summary of the invention
In view of this, be necessary the multifrequency antenna that provides a kind of versatility stronger.
A kind of multifrequency antenna; Comprise feed side, first earth terminal, second earth terminal, radiating element, resonance unit and bend unit, said first earth terminal and second earth terminal are arranged in the plane vertical with the feed side, and this radiating element is connected to feed side and bend unit; This resonance unit is arranged on a side of this radiating element; And be connected to said first earth terminal, said bend unit is connected to second earth terminal, when said multifrequency antenna is worked; Signal gets into from said feed side; Can obtain the propagation path of different length respectively along said radiating element, resonance unit and bend unit,, make this multifrequency antenna have a plurality of working bands to produce various signals.
Multifrequency antenna of the present invention can produce three above resonance frequencys when work, effectively increased the frequency range of multifrequency antenna, makes the frequency range scope of this multifrequency antenna can contain a plurality of communication systems, has strengthened the versatility of multifrequency antenna.
Description of drawings
Fig. 1 is the schematic perspective view of the multifrequency antenna of the present invention's first preferred embodiments.
Fig. 2 is the schematic perspective view under another angle of multifrequency antenna shown in Figure 1.
Fig. 3 returns the loss sketch map for multifrequency antenna shown in Figure 1.
Fig. 4 is the schematic perspective view of the multifrequency antenna of the present invention's second preferred embodiments.
Fig. 5 is the schematic perspective view of the multifrequency antenna of the present invention's the 3rd preferred embodiments.
Fig. 6 is the schematic perspective view of the multifrequency antenna of the present invention's the 4th preferred embodiments.
The main element symbol description
Multifrequency antenna 100,200,300,400
Feed side 11
Feeding portion 141,341,441
High-frequency radiation part 142
Low frequency radiation portion 143
The first ground connection section 151
The first resonance section 152
The second resonance section 153
The 3rd resonance section 154
Connecting portion 161,261,361,461
Kink 162,262,362,462
The second ground connection section 163,263,363,463
Resonance stub 164,264,364,464
The first high frequency radiation section 1421
The second high frequency radiation section 1422
The first resonance stub 4641
The second resonance stub 4642
Embodiment
Shown in Figure 1 for the multifrequency antenna 100 of the present invention's first preferred embodiment; Can be applicable to mobile phone, personal digital assistant (personal digital assistant; PDA) etc. in the radio communication device, and launch, receive radio wave with the transmitting/receiving wireless signal of telecommunication in a plurality of frequency ranges.
Said multifrequency antenna 100 is a three-dimensional antenna; Can be by metal sheet or flexible print circuit board (flexible printed circuit; FPC) process, comprise feed side 11, first earth terminal 12, second earth terminal 13, radiating element 14, resonance unit 15 and bend unit 16.This radiating element 14 connects this feed side 11 and bend unit 16 respectively, and said resonance unit 15 is connected to this first earth terminal 12, and this bend unit 16 is connected to second earth terminal 13.
This feed side 11 is strip lamellar body always, and the traditional signal transmission ends (figure does not show) on its circuit board inner with being arranged on radio communication device electrically connects, and thinks that said multifrequency antenna 100 plays signal feed-in effect.
Said first earth terminal 12 and second earth terminal 13 are vertical bar shape lamellar body, and both are arranged in parallel, be laid in perpendicular another plane, plane, 11 place, feed side in, and lay respectively at the both sides of feed side 11, with these feed side 11 vertical settings.This first earth terminal 12 and second earth terminal 13 all are connected to the traditional grounded part on the said circuit board, think that said multifrequency antenna 100 provides the ground connection effect.
Please consult Fig. 2 in the lump, said radiating element 14 is that (Planar Inverted-F Antenna PIFA), comprises feeding portion 141, high-frequency radiation part 142 and low frequency radiation portion 143 to a planar inverted-F antenna.Said feeding portion 141 is a strip lamellar body; It is arranged on one with the plane of first earth terminal 12 and second earth terminal 13 place plane parallel in and with vertical connection of end of said feed side 11, think that this radiating element 14 and bend unit 16 provide signal feed-in effect.This high-frequency radiation part 142 is for roughly being the lamellar body of " L " shape, integral body be laid in one with the plane of feed side 11 place plane parallel in, comprise the first high frequency radiation section 1421 and the second high frequency radiation section 1422.The said first high frequency radiation section 1421 is strip lamellar body always, and it vertically is connected to the end of this feeding portion 141 away from feed side 11.This second high frequency radiation section 1422 is strip lamellar body always, and the one of which end connects the end of this first high frequency radiation section 1421, and the other end extends along the direction perpendicular to the first high frequency radiation section 1421.This low frequency radiation portion 143 comprises changeover portion 1431, zigzag section 1432 and extension 1433.This changeover portion 1431 is strip lamellar body always, and it is laid in the plane, high-frequency radiation part 142 place.The vertical connection of end of one end of this changeover portion 1431 and this feeding portion 141 and the first high frequency radiation section 1421; The other end is along being parallel to the second high frequency radiation section 1422 and extending away from the direction of the first high frequency radiation section 1421, and its length is less than the length of the said second high frequency radiation section 1422.Said zigzag section 1432 is for roughly being the strip shape body of " ㄩ " shape, and it is laid in plane, feeding portion 141 place, and a whole side that is positioned at feeding portion 141.One end of this zigzag section 1432 is connected to the end of said changeover portion 1431; And the direction extension one that the edge is parallel to feeding portion 141 is than after the short distance; Bend a right angle,, bend a right angle again with towards extending a longer distance away from these feeding portion 141 place directions; Link to each other with this extension 1433 at last than short distance continuing along the direction horizontal-extending one that is parallel to feeding portion 141.Said extension 1433 is roughly L-shaped lamellar body, and it is laid in plane, high-frequency radiation part 142 place.This extension 1433 comprises shorter portion 1434 and longer portion 1435.This shorter portion 1434 is the rectangle lamellar body of a length less than the length of this first high frequency radiation section 1421, and the one of which end is vertically connected at the end of zigzag section 1432, and the other end is along being parallel to the first high frequency radiation section 1421 and extending away from the direction of said changeover portion 1431.This longer portion 1,435 one is shorter in length than the strip lamellar body of these second high frequency radiation section, 1422 length; The one of which end vertically connects the other end of this shorter portion 1434, and the other end is along being parallel to the second high frequency radiation section 1422 and extending near the direction of the first high frequency radiation section 1421.
These resonance unit 15 integral body are laid in a side of radiating element 14, comprise the first suitable ground connection section 151 of width, the first resonance section, 152, the second resonance section the 153 and the 3rd resonance section 154.This first ground connection section 151 is a strip lamellar body, is arranged on plane, 11 place, said feed side, and with this feed side 11 relatively and be arranged in parallel.This first ground connection section 151 vertically is connected to the end of said first earth terminal 12, thinks that this resonance unit 15 provides the ground connection effect.This first resonance section 152 is arranged on same plane with feeding portion 141, and both relatively and be arranged in parallel.One end of this first resonance section 152 is connected to the end of the first ground connection section 151, and the other end vertically connects this second resonance section 153.This second resonance section 153 is one to have the strip shape body of meander-shaped, and integral body is laid in this plane, high-frequency radiation part 142 place.One end of this second resonance section 153 is connected to the end of the said first resonance section 152; And after extending a segment distance along the direction that is parallel to the first high frequency radiation section 1421; Bend a right angle,, bend a right angle again to be parallel to the second high frequency radiation section 1422 and to extend a segment distance away from the direction of low frequency radiation portion 143; Extend a segment distance with the direction that is parallel to the said first high frequency radiation section 1421, link to each other with the 3rd resonance section 154 at last.The 3rd resonance section 154 is a rectangle lamellar body, and it is arranged on this first resonance section plane, 152 place.One end of the 3rd resonance section 154 vertically connects the end of this second resonance section 153, and the other end extends along the direction that is parallel to the first resonance section 152, and it is shorter in length than the length of this first resonance section 152.
This bend unit 16 comprises connecting portion 161, kink 162, the second ground connection section 163 and resonance stub 164.This connecting portion 161 is strip lamellar body always, is laid in this plane, feeding portion 141 place.One end of this connecting portion 161 vertically is connected to a side of this feeding portion 141, and the other end is along extending away from these feeding portion 141 place directions.This kink 162 is one roughly to be the lamellar body of " L " type; Be laid in plane, connecting portion 161 place; Comprise first bending segment 1621 and second bending segment 1622, an end of this first bending segment 1621 vertically connects the end of this connecting portion 161, and extends along the direction away from zigzag section 1432.One end of this second bending segment 1622 vertically is connected to the end of this first bending segment 1621, and other end edge is parallel to connecting portion 161 and extends near the direction of feeding portion 141, and it is shorter in length than the length of connecting portion 161.This second ground connection section 163 is a strip lamellar body, and it is arranged on this plane, 11 place, feed side, and is positioned at the same side of the feed side 11 and the first ground connection section 151.One end of this second ground connection section 163 vertically is connected to the end of this kink 162, and the other end vertically connects this first earth terminal 12, thinks that this bend unit 16 provides the ground connection effect.This resonance stub 164 is a rectangle lamellar body, and the one of which end is connected to the end of the connecting portion 161 and first bending segment 1621, and extends towards the bearing of trend of said connecting portion 161.
When said multifrequency antenna 100 is worked; Signal is after feed side 11 gets into; Can obtain the propagation path of different length respectively along low frequency radiation portion 143, high-frequency radiation part 142, resonance unit 15 and bend unit 16; And produce different current signals; Make this multifrequency antenna 100 to produce corresponding resonance mode in 930MHz, 1760MHz, 2250MHz and 2710MHz successively, and then make this multifrequency antenna 100 effectively widen the frequency range of this multifrequency antenna 100 respectively at the work down of a plurality of wireless communication frequency bands commonly used such as GSM900, DCS1800, PCS1900 and WCDMA2100.
See also Fig. 3, what be depicted as multifrequency antenna 100 of the present invention returns loss (return loss, RL) measurement result sketch map.By finding out that this multifrequency antenna all can satisfy antenna work designing requirement under the operating frequency of 930MHz, 1760MHz, 2250MHz, 2540MHz among the figure.
See also Fig. 4; Multifrequency antenna 200 for the present invention's second preferred embodiments; The difference of itself and multifrequency antenna 100 is that an end of this resonance stub 264 is connected to the end of first bending segment 2621 and second bending segment 2622, and oppositely extends towards the bearing of trend of said second bending segment 2622.
Please consult Fig. 5 in the lump; Multifrequency antenna 300 for the present invention's the 3rd preferred embodiments; The difference of itself and multifrequency antenna 100 is that an end of this resonance stub 364 is connected in first bending segment 3621 side away from feeding portion 341, and extends along parallel this connecting portion 361 and second bending segment 3622 and away from the direction of feeding portion 341.
Please consult Fig. 6 in the lump, be the multifrequency antenna 400 of the present invention's the 4th preferred embodiments, the difference of itself and multifrequency antenna 100 stub 464 that is to resonate comprises the first resonance stub 4641 and the second resonance stub 4642.Wherein, this first resonance stub 4641 is a strip lamellar body, and it is arranged in the connecting portion 461 side away from second bending segment 4622, and along being parallel to feeding portion 441 and extending away from the direction of this second bending segment 4622.This second resonance stub 4642 is length and the width and first resonance stub 4641 length and the suitable strip lamellar body of width; The one of which end is connected in the first resonance stub 4641 near a side of feeding portion 441; The other end extends along parallel this connecting portion 461 and near the direction of feeding portion 441, and separated by a distance with feeding portion 441.
Obviously, multifrequency antenna 100/200/300/400 of the present invention can produce a plurality of resonance frequencys when work, effectively increased frequency range, makes the frequency range scope of these multifrequency antennas can contain a plurality of communication systems, has strengthened the versatility of multifrequency antenna.
Claims (14)
1. multifrequency antenna; It is characterized in that: said multifrequency antenna comprises feed side, first earth terminal, second earth terminal, radiating element, resonance unit and bend unit, and said first earth terminal and second earth terminal are arranged in the plane vertical with the feed side, and this radiating element is connected to feed side and bend unit; This resonance unit is arranged on a side of this radiating element; And be connected to said first earth terminal, said bend unit is connected to second earth terminal, when said multifrequency antenna is worked; Signal gets into from said feed side; Can obtain the propagation path of different length respectively along said radiating element, resonance unit and bend unit,, make this multifrequency antenna have a plurality of working bands to produce various signals.
2. multifrequency antenna as claimed in claim 1 is characterized in that: said radiating element is a planar inverted-F antenna.
3. multifrequency antenna as claimed in claim 1; It is characterized in that: said radiating element comprises feeding portion and high-frequency radiation part, and this feeding portion is the strip lamellar body, be arranged in the plane that parallels with first earth terminal and second earth terminal and with terminal vertical connection of said feed side; This high-frequency radiation part is arranged in the plane that parallels with the feed side; Comprise the first high frequency radiation section and the second high frequency radiation section, the said first high frequency radiation section is strip lamellar body always, and the one of which end is vertically connected at the end of this feeding portion; The other end is connected to the second high frequency radiation section; This second high frequency radiation section is a vertical bar shape lamellar body, and the one of which end connects the end of this first high frequency radiation section, and the other end extends along the direction perpendicular to the first high frequency radiation section.
4. multifrequency antenna as claimed in claim 3 is characterized in that: said radiating element comprises low frequency radiation portion, and the entire length of said low frequency radiation portion is greater than the entire length of high-frequency radiation part.
5. multifrequency antenna as claimed in claim 4; It is characterized in that: said low frequency radiation portion comprises changeover portion, zigzag section and extension, and this changeover portion is strip lamellar body always, is laid in the plane, high-frequency radiation part place; The vertical connection of end of one end of this changeover portion and this feeding portion and the first high frequency radiation section; The other end is along being parallel to the second high frequency radiation section and extending away from the direction of the first high frequency radiation section, and said zigzag section is a strip shape body, is laid in plane, feeding portion place; And vertically connect this changeover portion and extension, said extension is laid in plane, high-frequency radiation part place.
6. multifrequency antenna as claimed in claim 5; It is characterized in that: an end of said zigzag section is connected to the end of said changeover portion, and extends one than after the short distance along the direction that is parallel to feeding portion, bends a right angle; To extend a longer distance towards belonging to direction away from this feeding portion; Bend a right angle again, link to each other with this extension at last than short distance continuing along the direction horizontal-extending one that is parallel to feeding portion.
7. multifrequency antenna as claimed in claim 5; It is characterized in that: said extension comprises shorter portion and longer portion; One end of this shorter portion is vertically connected at the end of zigzag section; The other end extends along the direction that is parallel to the first high frequency radiation section, and an end of this longer portion vertically connects the other end of this shorter portion, and the other end is along being parallel to the second high frequency radiation section and extending near the direction of the first high frequency radiation section.
8. multifrequency antenna as claimed in claim 3 is characterized in that: said resonance unit comprises the first ground connection section, the first resonance section, the second resonance section and the 3rd resonance section, this first ground connection Duan Weiyi strip lamellar body; Be arranged on plane, place, said feed side, with this feed side relatively and be arranged in parallel, an end of this first ground connection section is connected to the end of said first earth terminal; The other end vertically connects this first resonance section; This first resonance section is arranged on same plane with feeding portion, both relatively and be arranged in parallel, an end of this first resonance section is connected to the end of the first ground connection section; The other end vertically connects this second resonance section; The strip shape body that this second resonance Duan Weiyi has meander-shaped, integral body are laid in this plane, high-frequency radiation part place, the 3rd resonance Duan Weiyi rectangle lamellar body; Be arranged on this plane, first resonance section place; One end of the 3rd resonance section vertically connects the end of this second resonance section, and the other end extends along the direction that is parallel to the first resonance section, and it is shorter in length than the length of this first resonance section.
9. multifrequency antenna as claimed in claim 8; It is characterized in that: an end of the said second resonance section is connected to the end of the said first resonance section, and after extending a segment distance along the direction that is parallel to the first high frequency radiation section, bends a right angle; To be parallel to the second high frequency radiation section and to extend a segment distance away from the direction of high-frequency radiation part; Bend a right angle again, extend a segment distance, link to each other with the 3rd resonance section at last to be parallel to the said first high frequency radiation section.
10. multifrequency antenna as claimed in claim 3 is characterized in that: said bend unit comprises connecting portion, kink and the second ground connection section, and this connecting portion is strip lamellar body always; Be laid in this plane, feeding portion place, an end of this connecting portion vertically is connected to a side of this feeding portion, and the other end is along extending away from this feeding portion place direction; This kink is laid in plane, connecting portion place, comprises first bending segment and second bending segment, and an end of this first bending segment vertically connects the end of this connecting portion; And along direction extension away from connecting portion; One end of this second bending segment vertically is connected to the end of this first bending segment, and the other end is along being parallel to connecting portion and extending this second ground connection Duan Weiyi strip lamellar body near the direction of feeding portion; Be arranged on this plane, place, feed side; One end of this second ground connection section vertically is connected to the end of this kink, and the other end extends along the direction that is parallel to the feed side, and vertically connects this second earth terminal.
11. multifrequency antenna as claimed in claim 10 is characterized in that: said bend unit comprises the resonance stub, and this resonance stub is a rectangle lamellar body, and the one of which end is connected to the end of the connecting portion and first bending segment, and extends towards the bearing of trend of said connecting portion.
12. multifrequency antenna as claimed in claim 10; It is characterized in that: said bend unit comprises the resonance stub; This resonance stub is a rectangle lamellar body, and the one of which end is connected to the end of first bending segment and second bending segment, and oppositely extends towards the bearing of trend of said second bending segment.
13. multifrequency antenna as claimed in claim 10; It is characterized in that: said bend unit comprises the resonance stub; This resonance stub is a rectangle lamellar body; The one of which end is connected in first bending segment side away from feeding portion, and extends along parallel this connecting portion and second bending segment and away from the direction of feeding portion.
14. multifrequency antenna as claimed in claim 10; It is characterized in that: said bend unit comprises the resonance stub, and this resonance stub comprises the first resonance stub and the second resonance stub, and this first resonance stub is a strip lamellar body; Be arranged on a side of connecting portion; And along being parallel to feeding portion and extending away from the direction of this second bending segment, this second resonance section be the strip lamellar body, and an end is connected to first and resonates in the stub near a side of feeding portion; The other end extends along parallel this connecting portion and near the direction of feeding portion, and separated by a distance with feeding portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010106113486A CN102570037A (en) | 2010-12-29 | 2010-12-29 | Multifrequency antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106113486A CN102570037A (en) | 2010-12-29 | 2010-12-29 | Multifrequency antenna |
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| CN102570037A true CN102570037A (en) | 2012-07-11 |
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| CN2010106113486A Pending CN102570037A (en) | 2010-12-29 | 2010-12-29 | Multifrequency antenna |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104241871A (en) * | 2013-06-06 | 2014-12-24 | 深圳富泰宏精密工业有限公司 | Multi-band antenna and wireless communication apparatus using the same |
| CN105655690A (en) * | 2014-11-13 | 2016-06-08 | 联想(北京)有限公司 | Frequency range switch antenna |
| CN106159447A (en) * | 2015-04-14 | 2016-11-23 | 启碁科技股份有限公司 | Smart antenna module and omnidirectional antenna |
| CN109103593A (en) * | 2018-09-21 | 2018-12-28 | 深圳华大北斗科技有限公司 | Built-in all frequency bands antenna |
| CN104300202B (en) * | 2013-07-17 | 2019-02-26 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device with the antenna structure |
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| CN1409570A (en) * | 2001-09-14 | 2003-04-09 | 诺基亚有限公司 | Internal multiple frequency antenna with improved radiation effeciency |
| CN1729593A (en) * | 2002-10-28 | 2006-02-01 | 科学、技术与研究机构 | Miniature built-in multiple frequency band antenna |
| CN101651251A (en) * | 2008-08-15 | 2010-02-17 | 启碁科技股份有限公司 | Multi-frequency antenna and electric device using same |
| CN201498596U (en) * | 2009-07-02 | 2010-06-02 | 鸿富锦精密工业（深圳）有限公司 | multi-frequency antenna |
| US20100214174A1 (en) * | 2009-02-24 | 2010-08-26 | Fujikura Ltd. | Antenna and wireless communication apparatus |
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| CN1409570A (en) * | 2001-09-14 | 2003-04-09 | 诺基亚有限公司 | Internal multiple frequency antenna with improved radiation effeciency |
| CN1729593A (en) * | 2002-10-28 | 2006-02-01 | 科学、技术与研究机构 | Miniature built-in multiple frequency band antenna |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241871A (en) * | 2013-06-06 | 2014-12-24 | 深圳富泰宏精密工业有限公司 | Multi-band antenna and wireless communication apparatus using the same |
| 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 |
| CN104300202B (en) * | 2013-07-17 | 2019-02-26 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device with the antenna structure |
| CN105655690A (en) * | 2014-11-13 | 2016-06-08 | 联想(北京)有限公司 | Frequency range switch antenna |
| CN105655690B (en) * | 2014-11-13 | 2019-05-31 | 联想(北京)有限公司 | A kind of frequency range switched antenna |
| CN106159447A (en) * | 2015-04-14 | 2016-11-23 | 启碁科技股份有限公司 | Smart antenna module and omnidirectional antenna |
| CN109103593A (en) * | 2018-09-21 | 2018-12-28 | 深圳华大北斗科技有限公司 | Built-in all frequency bands antenna |
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Application publication date: 20120711 |