CN101388487A - Multi-frequency antenna - Google Patents
Multi-frequency antenna Download PDFInfo
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- CN101388487A CN101388487A CNA2007101323113A CN200710132311A CN101388487A CN 101388487 A CN101388487 A CN 101388487A CN A2007101323113 A CNA2007101323113 A CN A2007101323113A CN 200710132311 A CN200710132311 A CN 200710132311A CN 101388487 A CN101388487 A CN 101388487A
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Abstract
The invention relates to a multi-frequency antenna, which comprises a grounding portion, a radiating portion, a connecting portion and a feeder line, wherein the grounding portion comprises a main body portion and an extending portion which vertically extends from the main body portion, the radiating portion comprises a first radiating portion which works on a lower frequency band and a second radiating portion which works on a higher frequency band, wherein the first radiating portion comprises a first radiator which is electrically connected with the connecting portion and a second radiator which extends from the first radiator, wherein the second radiator comprises the first radiator which is shared with the first radiating portion and a third radiator which extends from the first radiator. The connecting portion is electrically connected with the first radiating portion, the second radiating portion and the grounding portion. The radiating portion further comprises a fourth radiator and a parasitic radiator, wherein the fourth radiator extends out from the tail end of the connecting portion, the parasitic radiator extends out from the grounding portion, and since the parasitic radiator and the fourth radiator can widen the high-frequency working frequency band of the second radiating portion, and therefore, the multi-frequency antenna has wider high-frequency radiation frequency band.
Description
[technical field]
The present invention relates to a kind of multifrequency antenna, especially refer to a kind of multifrequency antenna that can work in WWAN (Wireless WideArea Network, wireless wide area network) and have wider bandwidth.
[background technology]
Along with making rapid progress of modern communication technology, increasing mobile electronic equipment such as mobile computer etc. all are equipped with antenna, so that it can insert a wireless lan (wlan) job.At present, WLAN (wireless local area network) is mostly based on bluetooth (Bluetooth) technical standard or IEEE802.11 series standard.The working band of antenna falls within 2.4GHz in the Bluetooth technology standard, and the working band of antenna falls within 2.4GHz and 5GHz respectively in the IEEE802.11 series technique standard.Therefore, the antenna in the present notebook computer is the antenna that is applied to above-mentioned frequency band mostly.
Yet, following mobile electronic equipment will be not content with and only insert one and can not move that (the signal maximum transmission distance has only 10 meters in the Bluetooth technology, the electronic equipment that allow to insert this system hardly moves) or the WLAN (wireless local area network) of moving range very little (IEEE802.11 is that signal transmission ultimate range also has only 150 meters in the row standard, only limits to moving between the office).It is the target that pursue the communications field that mobile electronic equipment is inserted wireless wide area network (WWAN).The mobile electronic equipment that inserts WWAN can wider mobile office, amusement.Present global WWAN is mostly based on GSM (Global Systemfor Mobile communication), GPS (Global Positioning System, global positioning system) and CDMA (Code Division Multiple Access, code division multiple access) technical standard.GSM technical work frequency band falls within 900MHz and 1800MHz.The GPS technical standard works in the 1575MHz frequency band.The CDMA technology standard is divided into three kinds again: CDMA2000, WCDMA and TD-SCDMA.The CDMA2000 working band comprises 800,900,1700,1800,1900,2100MHz; The WCDMA working band comprises 1800,1900,2100MHz; The TD-SCDMA working band comprises 900,1800,2100MHz.Yet at present the antenna of laptop computer applications is to work in 2.4GHz and 5GHz frequency band mostly, and the used antenna of mobile phone that can insert the GSM network is unsuitable for placing notebook computer because of factors such as size or power mostly.The tw Taiwan patent announcement has disclosed a kind of double-frequency inverted F antenna for I254493 number, this antenna has two main radiant bodies, it works in 1800MHz, 900MHz frequency band respectively, can insert in the electronic equipments such as notebook computer so that it can insert the GSM network work.Yet, above-mentioned inverse-F antenna working band is narrower, only covered the frequency band of GSM work, and the working band of CDMA2000, WCDMA and TD-SCDMA has much not by its covering, so, this antenna only can work in the GSM network of WWAN, and can not work in CDMA2000, WCDMA and TD-SCDMA fully.
Therefore, be necessary such antenna is improved, to address the aforementioned drawbacks.
[summary of the invention]
The object of the present invention is to provide a kind of miniaturization and have the multifrequency antenna of broad emission band.
To achieve these goals, multifrequency antenna of the present invention is reached in the following manner:
A kind of multifrequency antenna, it comprises grounding parts, Department of Radiation, connecting portion and feeder line; The grounding parts shape is roughly a rectangle; Department of Radiation comprises first Department of Radiation that works in lower band and second Department of Radiation that works in high frequency band, first Department of Radiation comprises first radiant body and second radiant body that extends from first radiant body, and second Department of Radiation comprises and shared first radiant body of first Department of Radiation and the 3rd radiant body that extends from first radiant body; Connecting portion electrically connects first Department of Radiation, second Department of Radiation and grounding parts; Feeder line comprises inner wire and outer conductor; Wherein said Department of Radiation also comprises one the 4th radiant body and a parasitic radiation body, the 4th radiant body extends from the connecting portion end, this parasitic radiation body extends from grounding parts, described feeder line inner wire is electrically connected at the binding site of the 4th radiant body and connecting portion, and described feeder line outer conductor is electrically connected at grounding parts.
To achieve these goals, multifrequency antenna of the present invention can also be reached in the following manner:
A kind of multifrequency antenna, it comprises grounding parts, Department of Radiation, connecting portion and feeder line; The grounding parts shape is roughly a rectangle and has the lengthwise dual-side; Department of Radiation comprises first Department of Radiation that works in lower band and second Department of Radiation that works in high frequency band; Connecting portion electrically connects first Department of Radiation, second Department of Radiation and grounding parts; Feeder line comprises the inner wire of feed and the outer conductor of ground connection; Described first Department of Radiation comprises first radiant body and second radiant body that extends from first radiant body, and described second Department of Radiation comprises and shared first radiant body of first Department of Radiation and the 3rd radiant body that extends from first radiant body; Wherein said grounding parts comprises main part and the extension that extends from main part one side, and described connecting portion extends from grounding parts one end, and itself and extending part are in same plane and space one slit.
Than prior art, multifrequency antenna of the present invention has following beneficial effect:
Multifrequency antenna of the present invention makes the significantly broadening of its high frequency band because of the increase of parasitic radiation portion and the 4th radiant body.Again because of the connecting portion of multifrequency antenna from grounding parts one end extend and with the extending part of grounding parts in same plane, effectively reduce the length and the height of multifrequency antenna.
[description of drawings]
Fig. 1 is the stereogram of multifrequency antenna better embodiment of the present invention.
Fig. 2 is the other direction stereogram of Fig. 1.
Fig. 3 is the voltage standing wave ratio figure of multifrequency antenna of the present invention.
[embodiment]
Please refer to illustrated in figures 1 and 2ly, it is the stereogram of better embodiment multifrequency antenna 100 of the present invention.In this embodiment, multifrequency antenna 100 is to be formed by sheet metal bending cutting, and it comprises Department of Radiation 20 that main body is positioned at the grounding parts 10 of horizontal plane, is provided with at interval with grounding parts 10, from 10 1 jiaos of connecting portions 30 that extend and is connected Department of Radiation 20 and grounding parts 10 of grounding parts, from the parasitic radiation body 25 and the coaxial feeder 5 of grounding parts 10 1 lateral bucklings extension.
The extension 12 of connecting portion 30 and grounding parts 10 is positioned at same plane and extends out from a jiao of the grounding parts 10 at the tip of contiguous extension 12 triangular shapes.Connecting portion 30 comprises tilting outward extending first section portion 31 and extends and be parallel to second section portion 32 of extension 12 sides from first section portion, 31 ends.Between first section portion 31 and the second section portion 32 in obtuse angle.
Department of Radiation 20 comprises from second section portion 32 middle part of connecting portion 30 and second radiant body 22 that extends along relative direction perpendicular to upwardly extending broad first radiant body 21 in plane, connecting portion 30 place, from first radiant body, 21 ends and the 3rd radiant body 23 and from second section portion, 22 terminal the 4th radiant bodies 24 that extend of connecting portion 30.First radiant body 21 is a linearity, and its width is greater than second radiant body 22, the 3rd radiant body 23 and the 4th radiant body 24.Second radiant body 22 takes the shape of the letter U substantially, and it comprises that first radiation arm 221, second radiation arm 222 that extends vertically downward from first radiation arm, 221 ends reach the 3rd radiation arm 223 that extends towards first radiant body 21 from second radiation arm, 222 terminal sides.The 3rd radiant body 23 comprises with first radiation arm 221 and is positioned at the 4th radiation arm 231 that same straight line oppositely extends and the 5th radiation arm 232 that extends vertically downward from the 4th radiation arm 231 ends.The 4th radiant body 24 is L-shaped and be positioned at same plane with first radiant body 21, and it comprises shorter vertical section (not label) and longer horizontal segment (not label).Longer horizontal segment is between first radiation arm 221 and the 3rd radiation arm 223.Parasitic radiation body 25 comprises first support arm 251 that extends vertically upward from extension 12 middle parts of grounding parts 10 and second support arm 252 that is parallel to the extension of plane, extension 12 place from first support arm, 251 ends.Second support arm 252 is L-shaped, and its length is greater than first support arm 251.
Feeder line 50 comprises inner wire 51, coats the inner insulating layer 52 of inner wire 51, is coated on inner insulating layer 52 external insulation layer 54 that is braiding shape outer conductor 53 and coating outer conductor 53 on every side.Inner wire 51 is electrically connected at the binding site P place of the 4th radiant body 24 and connecting portion 30.Outer conductor 53 is electrically connected on the extension 12 of grounding parts 10.
First radiant body 21, second radiant body, 22 common first Departments of Radiation of forming.First radiant body 21, the 3rd radiant body 23 common second Departments of Radiation of forming.First Department of Radiation works in the low-frequency range of WWAN, and second Department of Radiation works in the high band of WWAN.The 4th radiant body 24 length are roughly suitable with the second Department of Radiation entire length, so the 4th radiant body 24 can be used as the enhancing of WWAN high band and replenishes, and makes WWAN high band frequency band wideer.Parasitic radiation body 25 length and the second Department of Radiation entire length are also roughly suitable, so parasitic radiation body 25 also is to the enhancing of WWAN high band and replenishes, makes WWAN high band frequency band wideer.
Because connecting portion 30 is positioned at same plane with the extension 12 of grounding parts 10, so the multifrequency antenna whole height has substantial degradation, and connecting portion 30 extends out from a jiao of the tip of contiguous extension 12 triangular shapes, so the entire length of multifrequency antenna reduces, because, if connecting portion 30 is as extending from the grounding parts middle part in the prior art, because the 4th radiant body 24 length can not change, then it can exceed the whole border of antenna, and the antenna entire length is increased.
Please refer to shown in Figure 3ly, it is VSWR (voltage standing wave ratio) figure of embodiment of the present invention multifrequency antenna 100.Because but the emission band of VSWR value below 2 all is working band in the industrywide standard.As can be seen from Figure 3, but multifrequency antenna 100 is 840MHz-920MHz in its low-frequency range operating frequency, and high band is owing to the acting in conjunction of second Department of Radiation, the 4th radiant body 24 and parasitic radiation body 25, but operating frequency is 1680MHz-2230MHz.Above-mentioned frequency band has covered the frequency band of GSM, CDMA2000, WCDMA and the TD-SCDMA technology standard operation of WWAN.Certainly, suitably regulate the length of the 4th radiant body 23 and the 5th radiant body 24, multifrequency antenna 100 can also work in the 1575MHz frequency band of GPS simultaneously.
Claims (10)
1. multifrequency antenna, it comprises: grounding parts, Department of Radiation, connecting portion and feeder line; Described grounding parts shape is roughly a rectangle; Described Department of Radiation comprises first Department of Radiation that works in lower band and second Department of Radiation that works in high frequency band; Described connecting portion electrically connects first Department of Radiation, second Department of Radiation and grounding parts; Described feeder line comprises inner wire and outer conductor; It is characterized in that: described first Department of Radiation comprises first radiant body and second radiant body that extends from first radiant body, and described second Department of Radiation comprises and shared first radiant body of first Department of Radiation and the 3rd radiant body that extends from first radiant body; Described Department of Radiation also comprises one the 4th radiant body and a parasitic radiation body, the 4th radiant body extends from the connecting portion end, this parasitic radiation body extends from grounding parts, described feeder line inner wire is electrically connected at the binding site of the 4th radiant body and connecting portion, and described feeder line outer conductor is electrically connected at grounding parts.
2. multifrequency antenna as claimed in claim 1 is characterized in that: described grounding parts comprises main part and extends and perpendicular to the extension of main part, described extension one end shape triangular in shape from main part one side.
3. multifrequency antenna as claimed in claim 2 is characterized in that: described connecting portion extends from a jiao of described grounding parts, and this connecting portion and described extending part are in same plane and space one slit.
4. multifrequency antenna as claimed in claim 1 is characterized in that: described connecting portion comprises that described first section portion and second section portion are in obtuse angle from the oblique extended first section portion of grounding parts one angle lapping and from terminal second section portion of extending of first section portion.
5. multifrequency antenna as claimed in claim 1 is characterized in that: described second radiant body, the 4th radiant body, parasitic radiation body all are positioned at the same side of first radiant body, and the 3rd radiant body is positioned at the relative opposite side of first radiant body.
6. multifrequency antenna as claimed in claim 1, it is characterized in that: described second radiant body takes the shape of the letter U, and it comprises that first radiation arm, second radiation arm that extends vertically downward from the first radiation arm end reach the 3rd radiation arm that extends towards first radiant body from the terminal side of second radiation arm.
7. multifrequency antenna, it comprises: grounding parts, Department of Radiation, connecting portion and feeder line; Described grounding parts shape is roughly a rectangle; Described Department of Radiation comprises first Department of Radiation that works in lower band and second Department of Radiation that works in high frequency band; Described connecting portion electrically connects first Department of Radiation, second Department of Radiation and grounding parts; Described feeder line comprises the inner wire of feed and the outer conductor of ground connection; It is characterized in that: described first Department of Radiation comprises first radiant body and second radiant body that extends from first radiant body, and described second Department of Radiation comprises and shared first radiant body of first Department of Radiation and the 3rd radiant body that extends from first radiant body; Described grounding parts comprises main part and the extension that extends from main part one side, and described connecting portion is from one jiao of extension of grounding parts, and itself and extending part are in same plane and space one slit.
8. multifrequency antenna as claimed in claim 7 is characterized in that: described connecting portion comprises that described first section portion and second section portion are in obtuse angle from the oblique extended first section portion of grounding parts one angle lapping and from terminal second section portion of extending of first section portion.
9. multifrequency antenna as claimed in claim 7 is characterized in that: the main part of described grounding parts is vertical mutually with extension, described extension one end shape triangular in shape, and described connecting portion extends from this triangle is most advanced and sophisticated.
10. multifrequency antenna as claimed in claim 7 is characterized in that: the extension of described grounding parts has a perforate and passes for described feeder line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101323113A CN101388487B (en) | 2007-09-13 | 2007-09-13 | Multi-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101323113A CN101388487B (en) | 2007-09-13 | 2007-09-13 | Multi-frequency antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101388487A true CN101388487A (en) | 2009-03-18 |
| CN101388487B CN101388487B (en) | 2012-07-04 |
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ID=40477747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101323113A Expired - Fee Related CN101388487B (en) | 2007-09-13 | 2007-09-13 | Multi-frequency antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN101388487B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544726A (en) * | 2010-12-13 | 2012-07-04 | 广达电脑股份有限公司 | Multi-frequency antenna module |
| CN102544701A (en) * | 2010-10-05 | 2012-07-04 | 莱尔德技术股份有限公司 | Multi-band, wide-band antennas |
| CN104953290A (en) * | 2015-05-06 | 2015-09-30 | 深圳市万普拉斯科技有限公司 | Wireless communication device and antenna assembly thereof |
| CN106159449A (en) * | 2015-04-23 | 2016-11-23 | 神讯电脑(昆山)有限公司 | Antenna structure |
| CN106910995A (en) * | 2017-05-08 | 2017-06-30 | 常熟市泓博通讯技术股份有限公司 | Double-deck coupling wideband antenna for mobile phone |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2317994B (en) * | 1996-10-02 | 2001-02-28 | Northern Telecom Ltd | A multiresonant antenna |
| US6195048B1 (en) * | 1997-12-01 | 2001-02-27 | Kabushiki Kaisha Toshiba | Multifrequency inverted F-type antenna |
-
2007
- 2007-09-13 CN CN2007101323113A patent/CN101388487B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544701A (en) * | 2010-10-05 | 2012-07-04 | 莱尔德技术股份有限公司 | Multi-band, wide-band antennas |
| CN102544701B (en) * | 2010-10-05 | 2014-10-08 | 莱尔德技术股份有限公司 | Multi-band, wide-band antennas |
| US9070966B2 (en) | 2010-10-05 | 2015-06-30 | Laird Technologies, Inc. | Multi-band, wide-band antennas |
| CN102544726A (en) * | 2010-12-13 | 2012-07-04 | 广达电脑股份有限公司 | Multi-frequency antenna module |
| CN106159449A (en) * | 2015-04-23 | 2016-11-23 | 神讯电脑(昆山)有限公司 | Antenna structure |
| CN106159449B (en) * | 2015-04-23 | 2019-04-02 | 神讯电脑(昆山)有限公司 | Antenna structure |
| CN104953290A (en) * | 2015-05-06 | 2015-09-30 | 深圳市万普拉斯科技有限公司 | Wireless communication device and antenna assembly thereof |
| CN104953290B (en) * | 2015-05-06 | 2018-08-17 | 深圳市万普拉斯科技有限公司 | Wireless telecommunications system and its antenna assembly |
| CN106910995A (en) * | 2017-05-08 | 2017-06-30 | 常熟市泓博通讯技术股份有限公司 | Double-deck coupling wideband antenna for mobile phone |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101388487B (en) | 2012-07-04 |
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