CN2893958Y - Bidirectional multifrequency multimode integrated antenna - Google Patents
Bidirectional multifrequency multimode integrated antenna Download PDFInfo
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- CN2893958Y CN2893958Y CN 200620071504 CN200620071504U CN2893958Y CN 2893958 Y CN2893958 Y CN 2893958Y CN 200620071504 CN200620071504 CN 200620071504 CN 200620071504 U CN200620071504 U CN 200620071504U CN 2893958 Y CN2893958 Y CN 2893958Y
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Abstract
The utility model discloses a bidirectional integrated antenna with multiple frequency and mould, comprising a media substrate and a T-shaped branch, wherein two surfaces of media substrate are respectively installed with microstrip transmission line, a microstrip ground and at least two pairs of symmetrical oscillator antennas. Imbalance input port at T-shaped branch is connected to microstrip transmission line and microstrip ground, the balance output port at T-shaped branch is connected to one of symmetrical oscillator antennas, the other balance output port at T-shaped branch is connected to the other symmetrical oscillator antenna, the oscillator in pairs on two surfaces of media substrate is connected with two balance output ports at T-shaped branch on two surfaces of media substrate, and microstrip ground is connected to the oscillator of symmetrical oscillator antenna with tapered line. The utility model is characterized by integrative bidirectional radiation with multiple frequency and mould, smaller structure and size, indoor operation, low cost, simple fabrication and large batch production.
Description
Technical field
The utility model relates to a kind of antenna that can be used for fields such as radio communication, information broadcast, detecting, electronic countermeasures, and it is antenna integrated to relate in particular to a kind of bidirectional multi-frequency multimode of using in the communication system of multi-frequency multi-mode coexistence of being adapted at.
Background technology
Suitable antenna direction diagram form plays an important role to the performance of communication system.Usually the antenna that uses in wireless system mostly is the antenna of unidirectional directed radiation and azimuth plane omnidirectional radiation, but needs the antenna of bidirectional radiation to realize the reasonable distribution of energy and suppress interference under special environment.The method that method (as the binary battle array) the unidirectional directional radiation antenna identical with two that bilateral antenna now commonly used mainly is made up of gust omnidirectional antenna sets up back-to-back realizes.These two kinds of methods all are to realize by the machinery combination with identical antenna.They all have bulky shortcoming, still can use at outdoor environment or to the occasion that spatial volume is not particularly limited, and then can't use substantially in indoor environment or occasions with limited space.In addition,,, can not in an antenna, realize multi-frequency multi-mode work, above-mentioned antenna is restricted on using so all can only on a frequency range, realize the bilateral antenna radiance because they are to be combined by separate single antenna.Along with the continuous development of mechanics of communication, the application of indoor communication is more and more, and the occasion of the communication system coexistence of different frequency range, different mode is also more and more.But therefore need the bilateral antenna that a kind of new method realizes the little multiple-frequency operation of volume.
Summary of the invention
The utility model provides the little bidirectional multi-frequency multimode of a kind of volume antenna integrated, when the utility model is realized integrated multi-frequency multi-mode bidirectional radiation characteristic, has littler physical dimension, be more suitable for indoor use, it is low also to have cost, and processing is simple, the characteristics that are easy to produce in enormous quantities.
The utility model adopts following technical scheme:
A kind of bidirectional multi-frequency multimode of using in communication system is antenna integrated, comprise dielectric substrate, two surfaces at dielectric substrate are respectively equipped with microstrip transmission line, little band ground and at least two secondary doublet antennas, the other end on microstrip transmission line and little band ground is connected with T-branch respectively and is connected with the uneven input port of T-branch respectively, a doublet antenna in above-mentioned each secondary doublet antenna is connected with the balance output port of T-branch, another doublet antenna is connected with another balance output port of T-branch, the any a pair of oscillator of forming doublet antenna lays respectively on two surfaces of dielectric substrate and is connected with the balance output port that is positioned at two lip-deep two T-branches of dielectric substrate respectively, is connected with the transition line balanced-unbalanced transformer between the oscillator of little band ground and doublet antenna.
Compared with prior art, the utlity model has following advantage:
1. with the bilateral antenna ratio of forming by Back-to-back installation with identical directional antenna, antenna of the present utility model has very little volume, thereby the applications of the limited space system of being particularly suitable for, and uses down as indoor environment, hidden environment.
2. compare by the bilateral antenna that composition is installed back-to-back with the bilateral antenna of realizing with the method for omnidirectional antenna group battle array and with identical directional antenna, antenna of the present utility model is except that realizing the bidirectional radiation characteristic, also have the advantage that can realize multiband multimode work, method in the past can only realize single band operation.
3. antenna of the present utility model has the advantage of the two-way beam radiation direction of convenient control, need not increase any circuit, as long as radiating element adjusts slightly and can realize the variation that two-way wave beam end-fire or limit are penetrated.The bilateral antenna of formula can't be realized this function back-to-back; The bilateral antenna of two general identical omnidirectional antenna group battle arrays, realization limit are penetrated needs the extra parts that increase, and has increased the cost and the structural complexity of antenna when increasing volume.
4. this antenna feed structure is simple, and feed, merit branch, balanced-unbalanced circuit and antenna integrated design can realize single-frequency or multiple-frequency operation by a cable direct feed.
5. the each several part of entire antenna is simple in structure, all utilizes simple and ripe explained hereafter, and cost is low, precision is high, good reproducibility, is fit to produce in enormous quantities.
Description of drawings
Fig. 1 is the circuit structure of bilateral antenna on the dielectric substrate.
Fig. 2 is the antenna integrated front view of bidirectional multi-frequency multimode.
Fig. 3 is the antenna integrated left view of bidirectional multi-frequency multimode.
Fig. 4 is the antenna integrated vertical view of bidirectional multi-frequency multimode.
Fig. 5 is the antenna integrated stereogram of bidirectional multi-frequency multimode.
Fig. 6 is the dual-band antenna circuit structure of bidirectional multi-frequency antenna.
Fig. 7 is the another kind of circuit structure of the dual-band antenna of bidirectional multi-frequency antenna.
Fig. 8 is the antenna circuit structure that characteristic is penetrated on bidirectional multi-frequency antenna realization limit.
Fig. 9 is the actual measurement H face directional diagram of bidirectional multi-frequency antenna.
Figure 10 is the actual measurement E face directional diagram of bidirectional multi-frequency antenna.
Figure 11 is the actual measurement S11 characteristic of bidirectional multi-frequency antenna.
Embodiment
A kind of bidirectional multi-frequency multimode of using in communication system is antenna integrated, comprise dielectric substrate 1, two surfaces at dielectric substrate 1 are respectively equipped with microstrip transmission line 21, little band ground 22 and at least two secondary doublet antennas 3, the other end on microstrip transmission line 21 and little band ground 22 is connected with T-branch 6 respectively and is connected with the uneven input port of T-branch 6 respectively, a doublet antenna in above-mentioned each secondary doublet antenna is connected with the balance output port of T-branch, another doublet antenna is connected with another balance output port of T-branch, the any a pair of oscillator of forming doublet antenna lays respectively on two surfaces of dielectric substrate 1 and is connected with the balance output port that is positioned at 1 two lip-deep two T-branches 6 of dielectric substrate respectively, is connected with the transition line balanced-unbalanced transformer between the oscillator of little band ground 22 and doublet antenna.Above-mentioned dielectric substrate 1 stands on the metal ground 4, and little band ground 22 is connected with metal ground 4.Above-mentioned transition line balanced-unbalanced transformer can have two kinds of implementations at least, the first: the transition line balanced-unbalanced transformer is located between the oscillator that is connected in T-branch 6 and doublet antenna respectively and the two ends of this transition line balanced-unbalanced transformer 7 are connected with the uneven input port and the doublet antenna oscillator of T-branch 6 respectively; It two is: the transition line balanced-unbalanced transformer is located between the balance output port of little band ground 22 and T-branch 6 and the two ends of this transition line balanced-unbalanced transformer are connected with the balance output port of little band ground 22 and T-branch 6 respectively.Present embodiment also is provided with tuning 23 at microstrip transmission line 21.
The utility model is used to realize that the antenna of bidirectional multi-frequency radiation comprises a little band dielectric substrate 1, feed circuit 2 and at least two secondary doublet antennas 3 on little band dielectric substrate 1, the little band dielectric substrate 1 that has feed circuit 2 and element antenna 3 places on the metal ground plane 4, coaxial cable 5 passes metal ground plane 4, the input microstrip transmission line 21 of feed circuit 2 is connected on the inner wire 51 of coaxial cable 5 and the little band dielectric substrate 1, the outer conductor 52 of coaxial cable 5 simultaneously with little band dielectric substrate 1 on the little band of the input ground 22 of feed circuit 2 be connected with metal ground plane 4, also can not use metal ground plane 4 as required, and outer conductor 52 is only directly linked to each other with the little band of input ground 22, on little band dielectric substrate 1, lower surface has microstrip transmission line 21 and little band ground 22, by T-branch 6 signal energy is divided into two, two branches respectively through the transition line balanced-unbalanced transformer 7 of two same structures with transmission line never balance end 8 transform to transmission line balance end 9 gradually (balanced-unbalanced transformer also can be realized on input feed circuit 2, promptly before being divided into two, signal energy realizes), on the balance transmission line end 9 of each branch and follow-up extended line thereof, at least respectively be connected to a secondary doublet antenna 3, two arms 31 of symmetrical dipole, 32 respectively on transmission line balance end 9 on little band dielectric substrate 1, the band 91 of following two faces, on 92 and perpendicular to transition line balanced-unbalanced transformer 7, for reducing antenna size, oscillator arms 31,32 ends can be done 90 degree folding 33,34, on microstrip transmission line 21, also can increase tuning 23 as required, by changing tuning 23 position on microstrip transmission line 21 and the big or small stationary wave characteristic that can regulate antenna easily, little band dielectric substrate 1 and the feed circuit 2 on it and doublet antenna 3 place within the radome 10 to obtain protection.
A kind of bilateral antenna that is operated in WLAN 802.11b/g frequency band as shown in Figure 5, little band dielectric substrate of antenna and top feed circuit and printed antenna such as Fig. 1 thereof.It is that the dielectric constant of 1mm is 2.65 the two-sided copper clad plate of glass fibre-polytetrafluoroethylene that dielectric substrate has been selected thickness for use.The connected mode of signal feed-in point is that the inner wire 51 of coaxial cable 5 is connected with feeder line input 21; the outer conductor 52 of coaxial cable 5 is connected with the little band of feeder line input ground 22; also weld together simultaneously with metal ground plane 4; to guarantee good ground connection performance; see Fig. 1, Fig. 2, Fig. 4 and Fig. 4, radome 10 is used to protect antenna and plays beautification function.The S11 Frequency Response test result of directional diagram and expression port return loss is seen Fig. 9, Figure 10 and Figure 11.
Embodiment 3
A kind of feed of two-way DBDM antenna and oscillator structure are as shown in Figure 6.On little band dielectric substrate 1, feed circuit 2 is arranged, two groups of element antenna (totally 4 pairs) H (2 pair) that work in different frequency, L (2 pair), T-branch 6, balanced-unbalanced transformer 7, one group of element antenna H that frequency is high places between one group of low element antenna L of frequency, the end of same one group of antenna oscillator arm of low frequency can do 90 ° folding 33,34, to reduce antenna size, balanced-unbalanced transformer 7 also can adopt on the main feeder of structure shown in Figure 7 before T-branch and realize, the signal of two frequency bands can be by a coaxial cable by 21,22 places carry out feed to antenna.The method of attachment of antenna and coaxial cable 5, metal ground plane 4 is identical with the method for embodiment 1, and antenna places within the radome 10, and is also identical with embodiment 1.This method can make the antenna of two frequency ranges that differ certain intervals integrate the bidirectional radiation characteristic that realizes DBDM simultaneously, can expand similarly to be used for the bilateral antenna that a plurality of frequency ranges constitute multi-frequency multi-mode.
Embodiment 4
Two radiation directions of embodiment 2 and embodiment 3 bilateral antennas all with little band dielectric substrate 1 vertical (vertical) with the unit line, embodiment 4 has provided another structure makes two radiation directions of bilateral antenna can be parallel with little band dielectric substrate 1, this structure makes dual directional antenna configuration more flexible, be adapted at the constrained narrow space applications in locus, form along the flat antenna of radiation direction.A kind of by making the anti-phase method of oscillator inverted arrangements make two-way wave beam along including radiating doublet Supporting Media such as little band dielectric substrate 1 with the bilateral antenna of the direction radiation of little band dielectric substrate 1 parallel (array element line); feed circuit 2; balanced-unbalanced transformer 7 and at least two secondary oscillators 3; element spacing is 1/2nd operation wavelengths; antenna is by coaxial cable 5 direct feeds; its feeder cable is identical with embodiment 1 with the method for attachment of antenna input; antenna places within the protection of radome, the feed circuit 2 on little band dielectric substrate 1; radiating element 3; T shape merit divides 6; balanced-unbalanced transformer 7 as shown in Figure 8.
Claims (5)
1, a kind of bidirectional multi-frequency multimode of using in communication system is antenna integrated, comprise dielectric substrate (1), it is characterized in that being respectively equipped with microstrip transmission line (21) on two surfaces of dielectric substrate (1), little band ground (22) and at least two secondary doublet antennas (3), the other end on microstrip transmission line (21) and little band ground (22) is connected with T-branch (6) respectively and is connected with the uneven input port of T-branch (6) respectively, a doublet antenna in above-mentioned each secondary doublet antenna is connected with the balance output port (9) of T-branch, another doublet antenna is connected with another balance output port (9) of T-branch, the any a pair of oscillator of forming doublet antenna lay respectively on two surfaces of dielectric substrate (1) and respectively with the balance output port (91) that is positioned at (1) two lip-deep two T-branch of dielectric substrate (6), (92) connect, between the oscillator of little band ground (22) and doublet antenna, be connected with the transition line (7) of balanced-unbalanced transformer effect.
2, bidirectional multi-frequency multimode according to claim 1 is antenna integrated, it is characterized in that dielectric substrate (1) stands on the metal ground (4), and little band ground (22) is connected with metal ground (4).
3, bidirectional multi-frequency multimode according to claim 1 and 2 is antenna integrated, it is characterized in that the transition line balanced-unbalanced transformer is located between the oscillator that is connected in T-branch (6) and doublet antenna respectively and the two ends of this transition line balanced-unbalanced transformer (7) are connected with the uneven port and the doublet antenna oscillator of T-branch (6) respectively.
4, bidirectional multi-frequency multimode according to claim 1 and 2 is antenna integrated, it is characterized in that the transition line balanced-unbalanced transformer is located between the balance output port of little band ground (22) and T-branch (6) and the two ends of this transition line balanced-unbalanced transformer are connected with the balance output port of little band ground (22) and T-branch (6) respectively.
5, bidirectional multi-frequency multimode according to claim 1 and 2 is antenna integrated, it is characterized in that being provided with tuning (23) at microstrip transmission line (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620071504 CN2893958Y (en) | 2006-05-19 | 2006-05-19 | Bidirectional multifrequency multimode integrated antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620071504 CN2893958Y (en) | 2006-05-19 | 2006-05-19 | Bidirectional multifrequency multimode integrated antenna |
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| CN2893958Y true CN2893958Y (en) | 2007-04-25 |
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| CN 200620071504 Expired - Fee Related CN2893958Y (en) | 2006-05-19 | 2006-05-19 | Bidirectional multifrequency multimode integrated antenna |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1851981B (en) * | 2006-05-19 | 2010-08-18 | 东南大学 | Bidirectional multi-frequency integrated antenna |
| CN102064383A (en) * | 2010-10-20 | 2011-05-18 | 佛山市健博通电讯实业有限公司 | 2.4/5.8GHz dual-frequency MIMO (Multiple Input Multiple Output) omnidirectional antenna |
| CN101197469B (en) * | 2007-12-12 | 2011-08-24 | 西安海天天线科技股份有限公司 | Four-frequency broadband antenna feeder unit |
| CN106450797A (en) * | 2015-08-06 | 2017-02-22 | 启碁科技股份有限公司 | Antenna system |
| CN109069921A (en) * | 2016-07-29 | 2018-12-21 | 惠普发展公司，有限责任合伙企业 | virtual reality docking station |
-
2006
- 2006-05-19 CN CN 200620071504 patent/CN2893958Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1851981B (en) * | 2006-05-19 | 2010-08-18 | 东南大学 | Bidirectional multi-frequency integrated antenna |
| CN101197469B (en) * | 2007-12-12 | 2011-08-24 | 西安海天天线科技股份有限公司 | Four-frequency broadband antenna feeder unit |
| CN102064383A (en) * | 2010-10-20 | 2011-05-18 | 佛山市健博通电讯实业有限公司 | 2.4/5.8GHz dual-frequency MIMO (Multiple Input Multiple Output) omnidirectional antenna |
| CN102064383B (en) * | 2010-10-20 | 2014-07-02 | 佛山市健博通电讯实业有限公司 | 2.4/5.8GHz dual-frequency MIMO (Multiple Input Multiple Output) omnidirectional antenna |
| CN106450797A (en) * | 2015-08-06 | 2017-02-22 | 启碁科技股份有限公司 | Antenna system |
| CN109069921A (en) * | 2016-07-29 | 2018-12-21 | 惠普发展公司，有限责任合伙企业 | virtual reality docking station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070425 Termination date: 20130519 |