CN101499562A - Double feed-in flat-board antenna - Google Patents
Double feed-in flat-board antenna Download PDFInfo
- Publication number
- CN101499562A CN101499562A CN 200810008471 CN200810008471A CN101499562A CN 101499562 A CN101499562 A CN 101499562A CN 200810008471 CN200810008471 CN 200810008471 CN 200810008471 A CN200810008471 A CN 200810008471A CN 101499562 A CN101499562 A CN 101499562A
- Authority
- CN
- China
- Prior art keywords
- flat
- bandwidth
- radiation path
- resonant structure
- double feed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention provides a dual-feed plate antenna, which comprises a first resonant part, a second resonant part and a grounding part. The first resonant part provides a first radiation path and comprises a first feed part and a grounding end receiving-grounding reference position; wherein, the first feed part can receive and transmit a first antenna signal, so that the first antenna signal can be transmitted to the first radiation path. The second resonant part provides a second radiation path and a third radiation path, and comprises a second feed part which can respectively receive and transmit a second antenna signal and a third antenna signal, so that the second antenna signal and the third antenna signal can be correspondingly transmitted to the second radiation path and the third radiation path. The grounding part receives the grounding reference position and is arranged between the first resonant part and the second resonant part. The dual-feed plate antenna can cover the following communication frequency bands: GSM850, GSM900, GPS, DCS, PCS and UMTS.
Description
Technical field
The invention relates to a kind of multifrequency plate aerial.And especially, the invention relates to a kind of double feed-in flat-board antenna.
Background technology
Along with the development of wireless telecommunications, the application of wireless telecommunications is increasingly extensive, and the communication channel demand increases day by day.One of mode that solves is exactly that more and more frequencies that are not used are disengaged use.For effectively utilizing available bandwidth, the bandwidth that newly disengages is also often near original bandwidth, thereby the demand of generation communication isolation.On the Integration Design demand of product, radio communication product also is required to possess the function of multifrequency communication, causes above-mentioned radio communication product need have the antenna that can use a plurality of bandwidths.In principle, use antenna to there is no the special demands that communication is isolated, because above-mentioned radio communication product of same time only need be handled a wherein bandwidth (or even upstream or downstream passage wherein) in single feed-in.Double-fed go into or the antenna scenario of many feed-ins under, wherein to carry out communication simultaneously but be normality to the antenna out of the ordinary that electrically connects with each feed-in cable, however this but can cause interference to each other.
For avoiding this kind interference, it uses in the bandwidth method of known solution with antenna spacing exactly, long wavelength 1/4th to the distance more than 1/2nd, be reduced in the tolerable scope to guarantee Recombinant Interferon, but increased the overall volume of antenna.In addition, radio communication product miniaturization day by day at present, significantly reduce especially in the arrangement of antennas space.Therefore, having to provide a kind of new double feed-in flat-board antenna, and its inside antenna need not at interval long wavelength's the distance more than 1/2nd, and still can possess enough radiation efficiencies, to address the above problem.
Summary of the invention
A purpose of the present invention is to provide a kind of double feed-in flat-board antenna.
Double feed-in flat-board antenna of the present invention comprises one first resonant structure, one second resonant structure and a grounding parts.Above-mentioned first resonant structure provides one first radiation path, and comprises one first feeding portion and an earth terminal and receive the accurate position of a ground connection, after wherein above-mentioned first feeding portion can be received and dispatched one first aerial signal, makes above-mentioned first aerial signal be sent to first radiation path.Above-mentioned second resonant structure provides one second radiation path and one the 3rd radiation path, and after comprising one second feeding portion and can receiving and dispatching one second aerial signal and a third antenna signal respectively, correspondence is sent to above-mentioned second radiation path and above-mentioned the 3rd radiation path, and wherein above-mentioned second feeding portion is between second radiation path and the 3rd radiation path.Above-mentioned grounding parts receives the accurate position of above-mentioned ground connection, and is arranged between above-mentioned first resonant structure and above-mentioned second resonant structure, to isolate above-mentioned first resonant structure and above-mentioned second resonant structure.
In a preferred embodiment, above-mentioned first resonant structure has a protuberance, and above-mentioned first feeding portion and earth terminal are positioned at above-mentioned protuberance.Above-mentioned earth terminal can be connected to above-mentioned grounding parts by above-mentioned protuberance, to receive the accurate position of above-mentioned ground connection.Further, above-mentioned protuberance is positioned at the end away from second resonant structure, to strengthen the isolation effect between above-mentioned first resonant structure and above-mentioned second resonant structure, effectively prevents to disturb.
In a preferred embodiment, above-mentioned first resonant structure, above-mentioned second resonant structure and above-mentioned grounding parts are formed on the flat board.
Above-mentioned first resonant structure and above-mentioned second resonant structure of double feed-in flat-board antenna of the present invention provide radiation path separately, and each radiation path has an operational frequency bands.The scope that the aforesaid operations frequency band is contained is not exceeded with single bandwidth, also can contain a plurality of existing bandwidths at present, or even discrete a plurality of bandwidth, for example GSM850 bandwidth (824MHz～894MHz), GSM900 bandwidth (890MHz～960MHz), GPS bandwidth (1570MHz～1580MHz), DCS bandwidth (1710MHz～1880MHz), PCS bandwidth (1850MHz～1990MHz) and UMTS bandwidth (1920MHz～2170MHz) or other bandwidth.
In a preferred embodiment, the operational frequency bands that above-mentioned first radiation path of above-mentioned first resonant structure provides comprises the GPS bandwidth; The operational frequency bands that above-mentioned second radiation path of above-mentioned second resonant structure provides comprises GSM850 bandwidth, GSM900 bandwidth; The operational frequency bands that above-mentioned the 3rd radiation path of above-mentioned second resonant structure provides comprises DCS bandwidth, PCS bandwidth and UMTS bandwidth.
In sum, double feed-in flat-board antenna of the present invention can be with wherein two resonant structures isolation, more than 1/2nd the distance of using long wavelength permissible isolation can be arranged and need not to make it to be spaced apart it, and the radiation efficiency of above-mentioned double feed-in flat-board antenna integral body is kept still.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention is described in detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the schematic diagram of the double feed-in flat-board antenna of a preferred embodiment of the present invention.
Fig. 2 A is the voltage standing wave ratio of first resonant structure of double feed-in flat-board antenna.
Fig. 2 B is the voltage standing wave ratio of second resonant structure of double feed-in flat-board antenna.
Fig. 3 is the isolation between first resonant structure and second resonant structure.
Embodiment
See also Fig. 1.Fig. 1 is the schematic diagram of the double feed-in flat-board antenna 1 of a preferred embodiment of the present invention.Double feed-in flat-board antenna 1 of the present invention comprises a flat board 12, and it is a rectangular flat, has a width W (being about 42mm), a length L (being about 37mm).Double feed-in flat-board antenna 1 is formed with first resonant structure 14, second resonant structure 16 and grounding parts 18 on dull and stereotyped 12, all be shown among the figure one with oblique hachure.First resonant structure 14 comprises one first feeding portion 142 and an earth terminal 144 (its position being shown with the dotted line circle), and the first radiation path P1 is provided (showing with dotted arrow).First feeding portion 142 and earth terminal 144 all are positioned at a protuberance 146 of first resonant structure 14.Earth terminal 144 and be connected to grounding parts 18 to receive the accurate position of a ground connection by protuberance 146.First feeding portion 142 and can transmit, receive one first aerial signal makes above-mentioned first aerial signal transmit, receive the first radiation path P1.
Second resonant structure 16 also comprises one second feeding portion 162, and the second radiation path P2 and the 3rd radiation path P3 (all showing with dotted arrow) are provided.Second feeding portion 162 is between the second radiation path P2 and the 3rd radiation path P3, and can transmit, receive (transmitting-receiving) one second aerial signal and a third antenna signal, make above-mentioned second aerial signal transmit, receive to the second radiation path P2 and above-mentioned third antenna signal transmits, receives to the 3rd radiation path P3.Grounding parts 18 also comprises isolation part 182, between first resonant structure 14 and second resonant structure 16.First feeding portion 142 of aforementioned first resonant structure 14 is connected with a feed-in line (for example using coaxial wire) respectively with second feeding portion 162 of second resonant structure 16, to form the situation that double-fed is gone into.Double feed-in flat-board antenna 1 of the present invention makes with a printed circuit board (PCB), and the substrate of above-mentioned printed circuit board (PCB) is as flat board 12, and the Copper Foil of above-mentioned printed circuit board (PCB) is as the usefulness that forms first resonant structure 14, second resonant structure 16 and grounding parts 18.
Please and consult Fig. 2 A and 2B.Fig. 2 A be first resonant structure 14 of double feed-in flat-board antenna 1 voltage standing wave ratio (Voltage standing wave ratio, VSWR).Fig. 2 B is the voltage standing wave ratio of second resonant structure 16 of double feed-in flat-board antenna 1.According to above-mentioned preferred embodiment, the first radiation path P1 that first resonant structure 14 provides has an operational frequency bands, contains the GPS bandwidth, shown in Fig. 2 A.The second radiation path P2 that second resonant structure 16 provides has another operational frequency bands, contains GSM850 bandwidth and GSM900 bandwidth; The 3rd radiation path P3 that second resonant structure 16 provides has another operational frequency bands, contains DCS bandwidth, PCS bandwidth and UMTS bandwidth, shown in Fig. 2 B.Therefore, shown in Fig. 2 A and 2B, double feed-in flat-board antenna 1 of the present invention is (42mm * 37mm) still can obtain good antenna performance in so little zone.Supplementary notes be, operational frequency bands of the present invention is non-to only limit to single bandwidth or a sequential frequency band exceeds, it also can be contains a plurality of existing bandwidths at present, or even the set that is made of the individual bandwidth of discrete institute.
Be different from conventional practice, double feed-in flat-board antenna 1 of the present invention neither utilizes the isolation (that is use long wavelength in the bandwidth the distance more than 1/2nd) of entity space apart, does not also adopt different antenna polarization direction to reduce mutual interference.The present invention adopts in the isolation part 182 that grounding parts 18 is set between two resonant structures 14,16 and to isolate with ground connection or reduce phase mutual interference between two resonant structures 14,16.In addition, the protuberance 146 of first resonant structure 14 also helps to reduce the phase mutual interference between two resonant structures 14,16 away from an end of second resonant structure 16.See also Fig. 3.Figure 3 shows that the isolation between first resonant structure 14 and second resonant structure 16.As shown in Figure 3, in the scope of 800MHz to 2500MHz, the isolation between the individual operation frequency band of first resonant structure 14 and second resonant structure 16 is all less than-15dB.Therefore, still possess the good isolation degree between first resonant structure 14 of double feed-in flat-board antenna 1 of the present invention and second resonant structure 16.
Please return and consult Fig. 1, Fig. 1 roughly shows to scale, the shortest square is from about 16mm between first resonant structure 14 and second resonant structure 16, this is much smaller than the long wavelength's of tradition 1/2nd length (for example the employed long wavelength of GSM850 bandwidth is 364mm, and 1/2nd wavelength then is 182mm).Be arranged at the also only about 6mm of width of the isolation part 182 between first resonant structure 14 and second resonant structure 16.Whole double feed-in flat-board antenna 1 all is arranged in the plane domain of 42mm * 37mm, and the obvious non-traditional practice can be reached.In addition, still can obtain the good isolation degree between each resonant structure 14,16 of double feed-in flat-board antenna 1 of the present invention, and also possess good aerial radiation characteristic.
See also following table one.Table one is listed the three-dimensional radiation efficient (3D Radiation Efficiency) of double feed-in flat-board antenna 1 of the present invention in GSM850 bandwidth and GSM900 bandwidth.As shown in Table 1, double feed-in flat-board antenna 1 is in this scope, and its three-dimensional radiation efficient all can reach more than 50%.
Table one: in the three-dimensional radiation efficient of GSM850, GSM900.
| Frequency (MHz) | Three-dimensional radiation benefit (%) |
| 824 | 54.7148 |
| 836 | 54.7374 |
| 849 | 53.4663 |
| 869 | 53.9164 |
| 880 | 55.8545 |
| 894 | 58.0029 |
| 900 | 59.6085 |
| 915 | 60.0829 |
| 925 | 59.0714 |
| 940 | 56.3567 |
| 960 | 55.6555 |
See also following table two.Table two is listed the three-dimensional radiation efficient of double feed-in flat-board antenna 1 of the present invention in DCS bandwidth, PCS bandwidth and UMTS bandwidth.As shown in Table 2, double feed-in flat-board antenna 1 is in this scope, and its three-dimensional radiation efficient is still had an appointment more than 30%, and also can be up to about 50% in its three-dimensional radiation efficient benefit of this scope mid portion.
Table two: in the three-dimensional radiation efficient of DCS, PCS, UMTS.
| Frequency (MHz) | Three-dimensional radiation benefit (%) |
| 1710 | 29.6115 |
| 1750 | 36.7808 |
| 1785 | 35.8026 |
| 1805 | 35.7195 |
| 1840 | 42.6564 |
| 1850 | 41.0482 |
| 1880 | 45.0093 |
| 1910 | 47.9288 |
| 1920 | 49.1687 |
| 1930 | 51.4886 |
| 1950 | 50.9045 |
| 1960 | 50.1144 |
| 1980 | 45.5206 |
| 1990 | 36.3269 |
| 2110 | 34.2035 |
| 2140 | 31.7854 |
| 2170 | 30.1805 |
See also following table three.Table three is listed the three-dimensional radiation efficient of double feed-in flat-board antenna 1 of the present invention in the GPS bandwidth.As shown in Table 3, double feed-in flat-board antenna 1 in this scope, its three-dimensional radiation efficient nearly 50%.
Table three: in the three-dimensional radiation efficient of GPS.
| Frequency (MHz) | Three-dimensional radiation benefit (%) |
| 1570 | 48.6496 |
| 1575 | 48.2488 |
| 1580 | 49.3428 |
In sum, the present invention can effectively isolate two resonant structures wherein at double feed-in flat-board antenna, it can obtain permissible isolation more than using long wavelength's 1/2nd distance at interval and need not to make it, and the three-dimensional radiation efficient of this double feed-in flat-board antenna integral body is still kept.In above-mentioned preferred embodiment, double feed-in flat-board antenna 1 of the present invention can operate in GSM850 bandwidth, GSM900 bandwidth, GPS bandwidth, DCS bandwidth, PCS bandwidth and UMTS bandwidth, and double feed-in flat-board antenna 1 configurable at 42mm * 37mm on dull and stereotyped 12, and still can make wherein and to have the good isolation degree between two resonant structures 14,16 (15～-20dB), and possess quite good three-dimensional radiation efficient (30～50%).
Below preferred embodiment of the present invention is specified, but the present invention is not limited to described embodiment, those of ordinary skill in the art also can make all modification that is equal to or replacement under the prerequisite of spirit of the present invention, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (10)
1. double feed-in flat-board antenna is characterized in that comprising:
One first resonant structure provides one first radiation path, and comprises one first feeding portion and an earth terminal and receive the accurate position of a ground connection, after wherein said first feeding portion can be received and dispatched one first aerial signal, makes described first aerial signal be sent to first radiation path;
One second resonant structure provides one second radiation path and the 3rd radiation path, and after comprising one second feeding portion and can receiving one second aerial signal and a third antenna signal respectively, correspondence is received and dispatched described second radiation path and described the 3rd radiation path; And
One grounding parts receives the accurate position of described ground connection, and is arranged between described first resonant structure and described second resonant structure.
2. double feed-in flat-board antenna according to claim 1 is characterized in that described first feeding portion and described earth terminal are positioned at a protuberance of described first resonant structure.
3. double feed-in flat-board antenna according to claim 2 is characterized in that described protuberance is positioned at the end away from second resonant structure.
4. double feed-in flat-board antenna according to claim 2 is characterized in that described earth terminal is to be connected to described grounding parts by described protuberance, to receive the accurate position of described ground connection.
5. double feed-in flat-board antenna according to claim 1 is characterized in that described second feeding portion is between described second radiation path and described the 3rd radiation path.
6. double feed-in flat-board antenna according to claim 1 is characterized in that further comprising a flat board, and described first resonant structure, described second resonant structure and described grounding parts are formed on the described flat board.
7. double feed-in flat-board antenna according to claim 1, it is characterized in that described second resonant structure has an operational frequency bands, comprises at least one bandwidth in the group that is made up of GSM850 bandwidth, GSM900 bandwidth, DCS bandwidth, PCS bandwidth and UMTS bandwidth.
8. double feed-in flat-board antenna according to claim 1 is characterized in that described first radiation path has one first operational frequency bands, and described first operational frequency bands comprises the GPS bandwidth.
9. double feed-in flat-board antenna according to claim 1 is characterized in that described second radiation path has one second operational frequency bands, and described second operational frequency bands comprises GSM850 bandwidth, GSM900 bandwidth.
10. double feed-in flat-board antenna according to claim 1 is characterized in that described the 3rd radiation path has one the 3rd operational frequency bands, and described the 3rd operational frequency bands comprises DCS bandwidth, PCS bandwidth and UMTS bandwidth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810008471 CN101499562A (en) | 2008-02-03 | 2008-02-03 | Double feed-in flat-board antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810008471 CN101499562A (en) | 2008-02-03 | 2008-02-03 | Double feed-in flat-board antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101499562A true CN101499562A (en) | 2009-08-05 |
Family
ID=40946509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810008471 Pending CN101499562A (en) | 2008-02-03 | 2008-02-03 | Double feed-in flat-board antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101499562A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377018A (en) * | 2010-08-16 | 2012-03-14 | 宏达国际电子股份有限公司 | Global positioning system antenna and electronic device using same |
| CN102738570A (en) * | 2012-04-23 | 2012-10-17 | 中兴通讯股份有限公司 | Multi-antenna terminal |
| CN102790262A (en) * | 2011-05-19 | 2012-11-21 | 旭丽电子(广州)有限公司 | Antenna and electronic device with antenna |
| CN102881997A (en) * | 2011-07-13 | 2013-01-16 | 联发科技（新加坡）私人有限公司 | Mobile communication device and antenna device |
| CN103872443A (en) * | 2012-12-17 | 2014-06-18 | 深圳富泰宏精密工业有限公司 | Antenna structure |
| CN105762487A (en) * | 2015-04-24 | 2016-07-13 | 维沃移动通信有限公司 | Antenna matching method and antenna apparatus based on mobile terminal, and mobile terminal |
-
2008
- 2008-02-03 CN CN 200810008471 patent/CN101499562A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377018A (en) * | 2010-08-16 | 2012-03-14 | 宏达国际电子股份有限公司 | Global positioning system antenna and electronic device using same |
| CN102377018B (en) * | 2010-08-16 | 2013-11-06 | 宏达国际电子股份有限公司 | Global positioning system antenna and electronic device using same |
| CN102790262A (en) * | 2011-05-19 | 2012-11-21 | 旭丽电子(广州)有限公司 | Antenna and electronic device with antenna |
| CN102790262B (en) * | 2011-05-19 | 2014-11-05 | 光宝电子(广州)有限公司 | Antenna and electronic device with antenna |
| US9225053B2 (en) | 2011-05-19 | 2015-12-29 | Lite-On Electronics (Guangzhou) Limited | Antenna and electronic device having the same |
| CN102881997A (en) * | 2011-07-13 | 2013-01-16 | 联发科技（新加坡）私人有限公司 | Mobile communication device and antenna device |
| CN102738570A (en) * | 2012-04-23 | 2012-10-17 | 中兴通讯股份有限公司 | Multi-antenna terminal |
| CN102738570B (en) * | 2012-04-23 | 2016-01-20 | 中兴通讯股份有限公司 | Multi-antenna terminal |
| CN103872443A (en) * | 2012-12-17 | 2014-06-18 | 深圳富泰宏精密工业有限公司 | Antenna structure |
| CN103872443B (en) * | 2012-12-17 | 2018-10-30 | 深圳富泰宏精密工业有限公司 | Antenna structure |
| CN105762487A (en) * | 2015-04-24 | 2016-07-13 | 维沃移动通信有限公司 | Antenna matching method and antenna apparatus based on mobile terminal, and mobile terminal |
| CN105762487B (en) * | 2015-04-24 | 2018-10-16 | 维沃移动通信有限公司 | A kind of aerial matching method, antenna assembly and mobile terminal based on mobile terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10644381B2 (en) | Antenna structure and wireless communication device using same | |
| CN202025847U (en) | Indirect feed antenna | |
| CN101106211B (en) | Dual loop multi-frequency antenna | |
| CN110085971B (en) | Printed circuit board antenna and terminal | |
| US7782261B2 (en) | Antenna arrangement | |
| US10236558B2 (en) | LTE full-band cellphone antenna structure | |
| CN109687115A (en) | GPS antenna structure and electric terminal for electric terminal | |
| KR20090089315A (en) | An apparatus for enabling two elements to share a common feed | |
| CN102820523B (en) | Multifrequency antenna | |
| CN103151601A (en) | Bottom edge slot coupled antenna | |
| US7659866B1 (en) | Multiple frequency band antenna | |
| CN101499562A (en) | Double feed-in flat-board antenna | |
| US20090195474A1 (en) | Dual-feed planar antenna | |
| CN104283006A (en) | Multi-antenna feed-in port active antenna system and related control method thereof | |
| US20090167616A1 (en) | Antenna Module, Speaker and Portable Electronic Device | |
| US9478860B2 (en) | Multiband antenna | |
| US20120056797A1 (en) | Frequency-tunable antenna | |
| US9142890B2 (en) | Antenna assembly | |
| TWI514679B (en) | Multiband antenna | |
| TWI614941B (en) | Triple feed point type and eight-band antenna for lte-a smart phone | |
| EP2209160B1 (en) | An antenna device, an antenna system and a portable radio communication device comprising such an antenna device | |
| CN104716431A (en) | Multi-band antenna | |
| US9356348B2 (en) | Antenna structure | |
| CN203760637U (en) | Multiband monopole mobile phone antenna based on curve broken line structure | |
| US8339319B2 (en) | Broadband antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090805 |