CN2561107Y - Broadband bilateral antenna and bilateral antenna array - Google Patents
Broadband bilateral antenna and bilateral antenna array Download PDFInfo
- Publication number
- CN2561107Y CN2561107Y CN 02262044 CN02262044U CN2561107Y CN 2561107 Y CN2561107 Y CN 2561107Y CN 02262044 CN02262044 CN 02262044 CN 02262044 U CN02262044 U CN 02262044U CN 2561107 Y CN2561107 Y CN 2561107Y
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- Prior art keywords
- probe
- antenna
- double
- becket
- coaxial
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Abstract
The utility model discloses a double-way antenna element and a double-way antenna array. The double-way antenna mainly comprises an excitation probe, a metal ring, and a coaxial socket. The probe 2 is positioned at the central symmetric position of the metal ring 3, the inner conductor 7 of the coaxial socket 4 is connected with the probe 2, and the outer conductor 6 of the coaxial socket 4 is connected with the metal ring 3. The directional diagram of the E surface and the H surface of the double-way antenna is 8-shaped, and two larges radial directions are pointed to the plus or minus X axis. The excitation ring type antenna radiation element of each probe is connected in parallel for power feeding, a T shape connector is utilized for connecting, respectively fixed on a dielectric plate with equal distances, and the double-way antenna array can be formed. The antenna has the advantages that the structure and the power feeding network are simple, the impedance matching is easy to be adjusted, and the cost is low, in the 15 percent of broad band range, the VSWR is no more than 1.5, and the double-way gain is up to 5 to 6 dBi. The utility model can be used for the indoor upright double-way antenna in a gallery, a metro, and a tunnel. The double-way antenna array can be utilized as the base station antenna along the highway and the railway in mobile communication.
Description
Technical field:
The utility model relates to antenna technical field, specifically is meant a kind of wide-band bidirectional antenna that is made of the probe excitation becket.This antenna can be installed in gallery, tunnel, the subway and use as the bilateral antenna in the indoor repeater; Form the bilateral antenna battle array with this antenna element, can be used as highway, railway antenna for base station use along the line.
Background technology:
Along with science and technology development, mobile communication more and more plays an important role in daily life, and the quantity of base station increases along with user's continuous increase.In order to improve communication quality, make the user in different environments for use, can both obtain satisfied communication efficiency, also having higher requirement to antenna in the base station, requires not only that bandwidth, electric property will be got well, price is low, and requirement can be applicable to that all-environment antenna kind wants many.For example, all need to use a kind of bilateral antenna along the line, to increase the service distance at long and narrow street, corridor, tunnel, subway, highway, railway.Traditional bilateral antenna then is two directional antennas, leans against privately through power splitter and combines; At a distance of λ/2, and the long binary antenna dipole array in the λ of anti-phase feed/2; Give way formations such as the narrow paster antenna feed in narrow dielectric-slab two sides with twin lead.The bilateral antenna that constitutes with these methods exists structure and feeding network complexity, big, the narrow bandwidth of size, the deficiency that cost is high.In the prior art, also have a kind of employing to be arranged parasitic Metallic rod in parallel and the high-gain bilateral antenna that constitutes, but still there is the shortcoming that is difficult to realize impedance matching in this antenna on conllinear omnidirectional antennas linear array next door.
The content of utility model:
One of the purpose of this utility model provides a kind of structure and feed all is quite simple probe excitation ring type bilateral antenna, to overcome the deficiency of above-mentioned bilateral antenna; Two of purpose provides a kind of bilateral antenna battle array of forming with probe excitation ring type unit.
Bilateral antenna of the present utility model mainly is made up of excitation probe, becket and coaxial socket.The center symmetric position of becket is provided with connecting hole, and the bottom that coaxial socket is fixed on connecting hole is connected with becket, and an end of probe is connected with the inner wire of coaxial socket among being positioned at connecting hole, other end open circuit; The similar λ of this probe/4 monopoles, its E face (vertical plane) directional diagram is 8 fonts, under the situation of probe excitation, because it is the metal tape of W that there is width in Y direction, make its also approximate 8 fonts that are of H face (horizontal plane) directional diagram, and two greatest irradiation direction sensing ± X-axis promptly constitute bilateral antenna.
High-gain bilateral antenna battle array of the present utility model is mainly by a plurality of radiating elements, multistage coaxial feeder and terminal box, form, wherein each radiating element adopts above-mentioned bad structure of probe excitation metal, passed through T shape connector between each section coaxial line and each probe excitation ring and be connected, be fixed on the dielectric-slab successively.
The shape of the becket of above-mentioned wide-band bidirectional antenna can be square, square type, garden shape, or ellipse garden shape.
The width W of the becket of above-mentioned wide-band bidirectional antenna can be at 0.13～0.16 λ; The length of side A of Fang Huan can be at 0.45～0.53 λ, the diameter of phi of garden ring
1Can be at 0.54～0.63 λ; The length L of probe can be in 0.2～0.25 λ, diameter of phi
2Can in 0.033～0.038 λ scope, regulate.
The T shape connector of above-mentioned high-gain bilateral antenna battle array is made up of metal dish and metal sleeve, and metal dish is fixed on the becket, and coaxial line passes metal sleeve, and the outer conductor of coaxial line is connected with metal sleeve, and the inner wire of coaxial line is connected with probe.
The parallelly feeding of above-mentioned high-gain bilateral antenna battle array is with coaxial line with all radiating elements in twos and connect earlier, and the each point after will and connecing successively again continues in twos and connects, to the last again two contacts and be connected to and input or output on the coaxial line.
Above-mentioned high-gain bilateral antenna battle array terminal box is to be processed by a garden shape metal derby, in establish a plurality of through wires holes and wiring point.
The utility model is owing to adopt probe excitation becket radiating element, and not only structure and feed are simple, and cost is low; And because elementary cell of the present utility model has broadband character, and can be according to the random also joint group battle array of the size of gain, therefore the high-gain bilateral antenna battle array that constitutes with this way, not only bandwidth, and not pipe unit what, all as easy as rolling off a log realization impedance matching.Actual measurement shows that the bilateral antenna with the utility model is made respectively at 824～960MHz, reaches in 1710～1990MHz frequency range, standing-wave ratio VSWR≤1.5, and gaining is 5-6dB, the horizontal plane elevation radiation patytern all is two-way shape; With 4 or 8 bilateral antenna battle arrays that this bilateral antenna unit composes in parallel, in 10% bandwidth, VSWR≤1.5, gain reaches 10 and 13dB respectively, can be used as highway or the railway two-way antenna for base station of high-gain that uses along the line.
Description of drawings:
Fig. 1 is a Q-RING antenna assumption diagram of the present utility model
Fig. 2 is a round ring antenna assumption diagram of the present utility model
Fig. 3 is the utility model and presents gain bilateral antenna battle array structure chart in the quaternary that constitutes
Fig. 4 is eight yuan of high-gain bilateral antenna battle array structure charts that the utility model and feedback constitute
The johning knot composition of elementary cell when Fig. 5 is the utility model group battle array
Fig. 6 is the VSWR frequency characteristics of Fig. 1.
Fig. 7 is the VSWR frequency characteristics of Fig. 2
Fig. 8 is horizontal plane and the elevation radiation patytern of Fig. 1
Fig. 9 is horizontal plane and the elevation radiation patytern of Fig. 2
Figure 10 is the horizontal radiation pattern of quaternary and eight yuan of probe excitation side's ring bilateral antenna battle arrays
Figure 11 is the elevation radiation patytern of probe excitation side, Unit four loop antenna battle array,
Figure 12 is the elevation radiation patytern of probe excitation side, Unit eight loop antenna battle array,
See figures.1.and.2, bilateral antenna radiating element 1 mainly is made up of probe 2, becket 3 and cable socket 4.Becket 3 is thick with the 1mm left and right sides, and width is that the metal tape of W bends to square and forms.At the center of becket, open a hole according to the size of coaxial socket 4, the flange 6 of coaxial socket 4 is screwed on becket 3.Probe 2 is made of metal tube or metal bar, is positioned on the symmetrical position of becket, and the inner wire 7 of an end and coaxial socket 4 is welded to connect, other end open circuit.Fig. 2 is the distressed structure of Fig. 1, promptly Q-RING is become round ring, guaranteeing under the constant situation of Fig. 2 garden ring girth, be (1.1～1.2) according to the ratio of length/minor axis: 1, just can constitute the ellipse garden of probe excitation and encircle bilateral antenna.These versions all in broad frequency range, not only still have the amphicheirality, and to environment for use, installation is set up, processing and fabricating provides convenience and the bigger degree of freedom.In the structure of this antenna, the similar λ of probe/4 monopoles, its E face (vertical plane) directional diagram is 8 fonts, under the situation of probe excitation, in coordinate system shown in Figure 1, be the metal tape of W because there is width in Y direction, make its also approximate 8 fonts that are of H face (horizontal plane) directional diagram, and two greatest irradiation direction sensing ± X-axis promptly constitute the amphicheirality of antenna.
In order to obtain best electric property, the width of metal tape can be at W=0.13～0.16 λ; The length of side of Fang Huan can be at A=(0.45～0.53) λ, and the diameter of garden ring can be at Φ
1=(0.54～0.63) λ; The length of probe can be at L=(0.2～0.25) λ, and diameter can be at Φ
2Regulate in the λ scope of=(0.033～0.038).
With reference to Fig. 3, this is a middle gain quaternary bilateral antenna battle array that is made of garden shape elementary cell shown in Figure 2 and feedback.Each radiating element 11,12,13,14 is fixed on the dielectric-slab 8 successively by screw 9, and each unit constant amplitude homophase feed is to obtain maximum gain.For preventing graing lobe, each unit interval connects each unit coaxial cable L less than wavelength and equal
1, L
2, L
3, L
4Length also must equate, to guarantee to realize maximum gain.Because the input impedance of each elementary cell is near 50 Ω, so connect the characteristic impedance Z of the used coaxial cable in each unit
0Be 50 Ω.Its connected mode be earlier with radiating element 11 and 12,13 with 14 in parallel respectively be two contact J
1And J
2, again with these two contacts with isometric cable L
9, L
10And to connect be a contact J
3To output cable L
17Respectively also the impedance of interface is 50/2 Ω.In order to reach with characteristic impedance is the output cable L of 50 Ω
17Coupling then must be used transformer section.
If the characteristic impedance of transformer section coaxial line is Z
CAccording to the impedance conversion theory, the impedance Z at transformer section two ends
1, Z
2With Z
C 
Relation.Suppose coaxial cable L
9, L
10Characteristic impedance still be 50 Ω, but length is necessary for the odd-multiple (wavelength in the λ g-coaxial line) of the desired λ g/4 of transforming section, through this transforming section through contact J
1And J
2Output 50/2 Ω impedance conversion to 100 Ω, again two 100 Ω impedances through contact J
3Parallel connection becomes 50 Ω and output 50 Ω cable L
17Mate fully.
Fig. 4 is the high-gain bilateral antenna battle array structure that constitutes as the elementary cell parallelly feeding with eight probe excitation rings 11,12,13,14,15,16,17,18.This probe excitation ring can be illustrated in figures 1 and 2 square or circular, also can be oval.This antenna array is the same with bilateral antenna battle array shown in Figure 3, connects each section coaxial cable L that uses all unit
1～L
8Length must equate that the spacing between each unit equates, to ensure to each unit constant amplitude homophase feed.For as easy as rolling off a log adjustment impedance matching, all adopted the parallelly feeding technology, in twos and connect that to become four and interface be J promptly eight unit
1, J
2, J
5, J
4, again these four and contact are become two and interface J
3, J
6, be these two contact parallel connections a contact J more at last
7To output cable L
17Coaxial line segments L
9, L
10, L
11, L
12Characteristic impedance be the transformer section of 50 Ω, coaxial line segments L
13, L
14, be 50 Ω characteristic impedances, through 75 Ω λ g/4 transformer section L
15, L
16Afterwards, be 50 Ω impedance strains that (75 * 75/50=112.5) become 56 Ω to two 112.5 Ω parallel connections to 112.5 Ω at last again, with 50 Ω output cable L
17Basic coupling.For all contact J easy to process
1～J
7And the junction of impedance matching section cable all is arranged in the terminal box.This terminal box is processed by a garden shape metal derby, in establish a plurality of through wires holes and contact (not drawing among the figure).
Referring to Fig. 5, the utility model is being used Fig. 1 in order to save cost and to be convenient to processing, during elementary unit groups battle array shown in Figure 2, does not use coaxial socket 4, but has adopted T shape connector construction.T shape connector is made up of centre metal dish 19 and metal sleeve 20 with holes.Metal sleeve 20 passes the hole that equates with its sleeve outer diameter on the becket 3, metal dish 19 and becket 3 are welded together, the coaxial line that diameter is equated with the metal sleeve internal diameter passes metal sleeve 20 again, dead the outer conductor 22 of coaxial line with metal sleeve 20 welderings, the inner wire 21 of coaxial line and probe 2 welding, visible method of attachment not only simply but also reliable.
The utility model newly in 1710～1990MHz frequency range of GSM and CDMA high band, has been made two indoor bilateral antennas according to version illustrated in figures 1 and 2.Wherein the length of side of Q-RING is 80mm, and the diameter of garden ring is 94mm.Through the reality test, the antenna of two kinds of structures all has broadband character.Wherein:
Fig. 6 has provided the VSWR frequency characteristics of the indoor bilateral antenna of probe excitation Q-RING, finds out by figure, and in the 1710-1990MHz frequency range (relative bandwidth is 15%), VSWR≤1.4.
Fig. 7 (a) has provided the VSWR frequency characteristics of the indoor bilateral antenna of probe excitation round ring, as can be seen from Figure, in the high workload frequency range (1710-1990MHz) of GSM and CDMA, VSWR≤1.4, and it has wideer impedance bandwidth, shown in Fig. 7 (b).In the 1697-2065MHz frequency range (relative bandwidth 19%), VSWR≤1.5.
Fig. 8 has provided the horizontal plane and the elevation radiation patytern of the bilateral antenna that is made of probe excitation Fang Huan, and its half-power beam width is respectively: HPBW
H=69.6 °, HPBW
E=46 °.
Fig. 9 has provided the horizontal plane and the elevation radiation patytern of the bilateral antenna that is made of probe excitation garden ring, and its half-power beam width is respectively: HPBW
H=63 °, HPBW
E=65.6 °.Can find out from Fig. 8 and Fig. 9, no matter be Fang Huan by probe excitation, the still bilateral antenna that constitutes by the garden ring of probe excitation, its horizontal radiation pattern all has the amphicheirality.In the 1710-1990MHz frequency range, actual measurement gain 5-6dBi.
Embodiment 2:
The utility model as elementary cell, has constituted 4 yuan and 8 yuan of bilateral antenna battle arrays with probe excitation Fang Huan in the 1850-1990MHz frequency range, and the length of side of Fang Huan is 80mm.Figure 10 is the horizontal radiation pattern of quaternary and eight yuan of probe excitation sides ring bilateral antennas, is found out that by figure the horizontal radiation pattern of it and this unit of side's cyclic group shown in Figure 8 is basic identical.Figure 11 and Figure 12 are respectively the elevation radiation patytern of Unit four and probe excitation side, Unit eight loop antenna battle array, and half-power beam width is respectively 13 ° and 6.9 °, and the unit is many more as seen from the figure, and elevation radiation patytern is narrow more.The actual measurement gain is respectively 10dBi and 13dBi, and this antenna can extensively be used in highway, railway along the line as antenna for base station.
The utility model is not limited to the example that the application gives, and the shape of becket also can be rectangle, ellipse or other ring-type.The bilateral antenna battle array that constitutes with this probe excitation ring type radiating element also can be hexa-atomic battle array, ten yuan of battle arrays or other polynary battle array.
Claims (7)
1. wide-band bidirectional antenna, comprise radiating element and coaxial socket, it is characterized in that radiating element (1) is to be made of excitation probe (2), becket (3) and coaxial socket (4), the center symmetric position of becket is provided with connecting hole, the bottom that coaxial socket (4) is fixed on connecting hole is connected with becket (3), one end of probe (2) is connected with the inner wire (7) of coaxial socket among being positioned at connecting hole, other end open circuit; The vertical plane and the horizontal radiation pattern of probe (2) all are 8 fonts, and two greatest irradiation direction sensing ± X-axis.
2. bilateral antenna according to claim 1, the shape that it is characterized in that becket (3) can be square, rectangle, garden shape, or ellipse garden shape.
3. bilateral antenna according to claim 1 is characterized in that the width W of becket (3) can be at 0.13～0.16 λ; The length of side A of Fang Huan can be at 0.45～0.53 λ, the diameter of phi of garden ring
1Can be at 0.54～0.63 λ; The length L of probe can be in 0.2～0.25 λ, diameter of phi
2Can in 0.033～0.038 λ scope, regulate.
4. high-gain bilateral antenna battle array, comprise a plurality of radiating elements and multistage coaxial feeder and terminal box, radiating element is fixed on the dielectric-slab successively, it is characterized in that each radiating element adopts probe excitation becket (1) to constitute, be connected by T shape connector between each section coaxial line and each radiating element, and adopt parallelly feeding.
5. bilateral antenna battle array according to claim 4, it is characterized in that T shape connector is made up of metal dish (19) and metal sleeve (20), metal dish (19) is fixed on the becket (3), coaxial line passes metal sleeve (20), the outer conductor of coaxial line (22) is connected with metal sleeve (20), and the inner wire of coaxial line (21) is connected with probe (2).
6. bilateral antenna battle array according to claim 4 is characterized in that parallelly feeding is with coaxial line with all radiating elements in twos and connect earlier, and the each point after will and connecing successively again continues in twos and connects, to the last again two contacts and be connected to input cable L
17On.
7. bilateral antenna battle array according to claim 4 is characterized in that terminal box is to be processed by a garden shape metal derby, in establish a plurality of through wires holes and wiring point is convenient to two above coaxial lines are connected together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262044 CN2561107Y (en) | 2002-08-12 | 2002-08-12 | Broadband bilateral antenna and bilateral antenna array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02262044 CN2561107Y (en) | 2002-08-12 | 2002-08-12 | Broadband bilateral antenna and bilateral antenna array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2561107Y true CN2561107Y (en) | 2003-07-16 |
Family
ID=33728692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02262044 Expired - Fee Related CN2561107Y (en) | 2002-08-12 | 2002-08-12 | Broadband bilateral antenna and bilateral antenna array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2561107Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097673A (en) * | 2009-12-14 | 2011-06-15 | 中国联合网络通信集团有限公司 | Bidirectional ceiling antenna used in distribution system in mobile communication network room |
| CN102231455A (en) * | 2010-07-27 | 2011-11-02 | 京信通信系统（中国）有限公司 | Gallery mobile communication coverage and distribution system and ultra broadband bidirectional radiating antenna |
| CN102683827A (en) * | 2012-06-07 | 2012-09-19 | 清华大学 | Bidirectional radiating antenna used in mine shafts and tunnels |
| CN107591612A (en) * | 2017-09-18 | 2018-01-16 | 苏州厚立智能科技有限公司 | A kind of two-way wave beam constrains formula car antenna |
-
2002
- 2002-08-12 CN CN 02262044 patent/CN2561107Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097673A (en) * | 2009-12-14 | 2011-06-15 | 中国联合网络通信集团有限公司 | Bidirectional ceiling antenna used in distribution system in mobile communication network room |
| CN102097673B (en) * | 2009-12-14 | 2014-04-02 | 中国联合网络通信集团有限公司 | Bidirectional ceiling antenna used in distribution system in mobile communication network room |
| CN102231455A (en) * | 2010-07-27 | 2011-11-02 | 京信通信系统（中国）有限公司 | Gallery mobile communication coverage and distribution system and ultra broadband bidirectional radiating antenna |
| CN102231455B (en) * | 2010-07-27 | 2014-01-29 | 京信通信系统（中国）有限公司 | Gallery mobile communication coverage and distribution system and ultra broadband bidirectional radiating antenna |
| CN102683827A (en) * | 2012-06-07 | 2012-09-19 | 清华大学 | Bidirectional radiating antenna used in mine shafts and tunnels |
| CN107591612A (en) * | 2017-09-18 | 2018-01-16 | 苏州厚立智能科技有限公司 | A kind of two-way wave beam constrains formula car antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |