CN203983481U - A kind of miniaturization high-isolation reception-transmitting antenna - Google Patents
A kind of miniaturization high-isolation reception-transmitting antenna Download PDFInfo
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- CN203983481U CN203983481U CN201420450206.XU CN201420450206U CN203983481U CN 203983481 U CN203983481 U CN 203983481U CN 201420450206 U CN201420450206 U CN 201420450206U CN 203983481 U CN203983481 U CN 203983481U
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- 238000002955 isolation Methods 0.000 title claims abstract description 45
- 239000000758 substrate Substances 0.000 claims abstract description 42
- 230000010287 polarization Effects 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 230000005284 excitation Effects 0.000 claims abstract description 32
- 230000005855 radiation Effects 0.000 claims abstract description 27
- 230000010363 phase shift Effects 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 238000013507 mapping Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000446313 Lamella Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses a kind of miniaturization high-isolation reception-transmitting antenna, comprise: the reception antenna that structure is identical and transmitting antenna, reception antenna comprises shell, in shell, set gradually cambered surface radiation fin, substrate and reflecting plate, the front of substrate is provided with excitation gap, the back side of substrate is provided with the transmission line of the crossed linear polarization antenna of two-way polarization orthogonal, the outer end of the transmission line of the crossed linear polarization antenna of two-way polarization orthogonal is connected with two inputs of phase shift 90 degree constant power distributors respectively, the outside output cross circular polarized antenna of the output signal of phase shift 90 degree constant power distributors, the transmission line excitation excitation gap of crossed linear polarization antenna.Miniaturization high-isolation reception-transmitting antenna of the present utility model.The electromagnetic wave that utilizes cambered surface radiation fin that transmitting antenna is formed near field, while arriving reception antenna, carries out offseting of energy with the electromagnetic wave of reception antenna, improves the isolation of reception-transmitting antenna.
Description
Technical field
The utility model relates to antenna technical field in the communications field, particularly, relates to miniaturization high-isolation reception-transmitting antenna.
Background technology
Isolation is defined as the degree of decay of repeater input port signal to output port signal, is the ratio of power, the dB of unit.Isolation is that in wireless intra-frequency repeater application, very important engineering is adjusted parameter, has different adjustment in different application, if do not noted, can cause significant impact to network.
Wireless intra-frequency repeater adopts with the technology of amplification forwarding frequently, receives that with the signal frequency sending be consistent between donor antenna and retransmitting antenna, and receiving and transmitting signal under open environment is again certainly existing the Space Coupling of signal.If this degree of coupling is not controlled in certain scope, just likely causes and will impact the self-excitation of repeater equipment to whole network.The important method that reduces coupling is to improve isolation, therefore also can say, isolation problem is to make good use of the same key issue of wireless discharging-directly station frequently.
In the prior art, the main method of increase isolation has: before and after selecting, ratio and Sidelobe Suppression are than large antenna; Increase as far as possible the mounting distance between two antennas; Two antennas adopt back-to-back installation as far as possible; Utilize building isolation; Azimuth and the inclination angle of fine setting antenna; Between two antennas, separation net is installed; Repeater accurately utilizes the recessed position of donor antenna and service antenna secondary lobe while installing; Selection has the wireless discharging-directly station of resistance to shock, and anti-vibration measure can make isolation have the equivalence of 30dB to improve, and in most of the cases can guarantee the normal use of high-power wireless repeater.
Utility model content
The utility model is in order to overcome the defect that in prior art, reception-transmitting antenna isolation is not good, volume is larger, according to an aspect of the present utility model, proposes a kind of miniaturization high-isolation reception-transmitting antenna.
Miniaturization high-isolation reception-transmitting antenna according to the utility model embodiment, comprising:
The reception antenna that structure is identical and transmitting antenna, reception antenna comprises shell, in shell, set gradually cambered surface radiation fin, substrate and reflecting plate, the cambered surface surface of cambered surface radiation fin is bowl-shape setting, the front of substrate is relative with cambered surface radiation fin, the front of substrate is provided with excitation gap, the back side of substrate is relative with reflecting plate, the back side of substrate is provided with the transmission line of the crossed linear polarization antenna of two-way polarization orthogonal, the outer end of the transmission line of the crossed linear polarization antenna of two-way polarization orthogonal is connected with two inputs of phase shift 90 degree constant power distributors respectively, the outside output cross circular polarized antenna of the output signal of phase shift 90 degree constant power distributors, the transmission line excitation excitation gap of crossed linear polarization antenna.
Miniaturization high-isolation reception-transmitting antenna of the utility model embodiment, between its reception antenna and transmitting antenna, only at a distance of 2.5 centimetres, antenna is near field.The electromagnetic wave that utilizes cambered surface radiation fin that transmitting antenna is formed near field, while arriving reception antenna, carries out offseting of energy with the electromagnetic wave of reception antenna, improves the isolation of reception-transmitting antenna.By regulating the radian size of cambered surface radiation fin, control the distance up and down of substrate and the cambered surface of cambered surface radiation fin is opening up or down, to find the energy that reaches reception antenna and transmitting antenna and offset a little, energy offsets more, can obtain better isolation.
Other features and advantages of the utility model will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the utility model.The purpose of this utility model and other advantages can be realized and be obtained by specifically noted structure in the specification write, claims and accompanying drawing.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model with embodiment mono-of the present utility model, does not form restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the front schematic view of the utility model miniaturization high-isolation reception-transmitting antenna;
Fig. 2 is the schematic rear view of the utility model miniaturization high-isolation reception-transmitting antenna;
Fig. 3 is the side sectional view of the utility model miniaturization high-isolation reception-transmitting antenna;
Fig. 4 is the structure schematic diagram of the utility model miniaturization high-isolation reception-transmitting antenna substrate, substrate back erodes away the cross gap identical with this cross excitation seam shape in substrate front cross excitation gap to the mapping position of this substrate back, this cross gap is connected with each line branches, the central authorities of this cross gap are provided with circular metal face, and the surrounding of circular metal face is transmitted line and surrounds.
Fig. 5 is the Facad structure schematic diagram of the utility model miniaturization high-isolation reception-transmitting antenna substrate;
Fig. 6 is the utility model miniaturization high-isolation reception-transmitting antenna each several part decomposition texture schematic diagram;
Fig. 7 is the utility model miniaturization high-isolation reception-transmitting antenna isolation degree test figure, in Fig. 7, the left side longitudinal axis represents isolation coordinate, the right side longitudinal axis represents standing-wave ratio coordinate, file 2.700 in upper left-hand, 2.400, 2.575, 2.635 represent respectively the frequency that each curve is corresponding, file-62.245,-37.841,-46.904,-75.965 represent respectively the isolation value that each curve is corresponding with its frequency, the frequency of curve 1 is 2.700, isolation value is-62.245, the frequency of curve 2 is 2.400, isolation value is-37.841, the frequency of curve 3 is 2.575, isolation is-46.904.
Main description of reference numerals:
1-cambered surface radiation fin, 2-substrate, 3-reflecting plate, 4-reception antenna, 5-transmitting antenna, 6-connection of antenna receiving end, 7-antenna transmission end, 8-shell, 9-the first transmission line, 10-the second transmission line, 11-decile two power splitters, 12-encourages gap, 13-circular metal face, 14-metallic vias, 16-phase shift 90 degree constant power distributors, 17-circular polarized antenna, 18-complanar line branch road, 19-cross gap, 20-plated-through hole, 21-shell, curve 1: reception antenna standing-wave ratio curve, curve 2: transmitting antenna standing-wave ratio curve, curve 3: isolation curve between reception antenna and transmitting antenna.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but is to be understood that protection range of the present utility model is not subject to the restriction of embodiment.
As shown in Fig. 1-6, the miniaturization high-isolation reception-transmitting antenna of the utility model embodiment comprises: one group of reception antenna 4 and transmitting antenna 5, and the present embodiment be take reception antenna and is described as example, and the structure of transmitting antenna is identical with reception antenna.
Reception antenna 4 comprises shell 21, the cambered surface radiation fin 1 setting gradually from top to bottom in shell 21, substrate 2 and reflecting plate 3, the cambered surface inner surface of cambered surface radiation fin 1 is bowl-shape setting, bottom disc or plane can be established in the bowl-shape cambered surface surface of cambered surface radiation fin 1, and the cambered surface opening of cambered surface radiation fin 1 can face upward or downward.As shown in Fig. 3,6; The front of substrate 2 and cambered surface radiation fin 1 are oppositely arranged, and the back side of substrate 2 and reflecting plate 3 are oppositely arranged.
Miniaturization high-isolation reception-transmitting antenna of the utility model embodiment, it is the antenna combination with the same frequency transmission duplex one of high isolation, miniaturization, between its reception antenna and transmitting antenna only at a distance of 2.5 centimetres, substantially do not increase the size of antenna, just can make the isolation between reception antenna and transmitting antenna reach 55～60dB, as shown in Figure 7.
Miniaturization high-isolation reception-transmitting antenna of the utility model embodiment, between its reception antenna 4 and transmitting antenna 5, only at a distance of 2.5 centimetres, antenna is near field.The electromagnetic wave that utilizes cambered surface radiation fin 1 that transmitting antenna 5 is formed near field, while arriving reception antenna 4, carries out offseting of energy with the electromagnetic wave of reception antenna 4, improves the isolation of reception-transmitting antenna.By regulating the radian size of cambered surface radiation fin 1, controlling the distance up and down of substrate 2 and the cambered surface opening of cambered surface radiation fin 1 can face upward or downward, find the energy that reaches reception antenna and transmitting antenna and offset a little, energy offsets more, can obtain better isolation.
The back side of substrate 2 arranges the transmission line of the crossed linear polarization antenna of two-way polarization orthogonal, i.e. the first transmission line 9 and the second transmission line 10, signal in the transmission line of this two-way crossed linear polarization antenna differs 90 degree with frequency and polarization, transmission line one end of this two-way crossed linear polarization antenna (being outer end) is connected to two inputs of phase shift 90 degree constant power distributors, and the output (connection of antenna receiving end 6 or antenna transmission end 7) of phase shift 90 degree constant power distributors is output cross circular polarized antenna signal outwards.
The front of substrate 2 is provided with excitation gap 12, and cross is arranged in this excitation gap 12, and the front of substrate 2 is except this cross excitation gap 12, and all the other equal large area are covered copper, and it covers the front metal face that copper face forms substrate 2, i.e. metal ground plane.The back side of substrate 2 except the transmission line of the crossed linear polarization antenna of two-way polarization orthogonal, the excitation gap 12 in substrate 2 fronts is cross gap 19 in the mapping area of these substrate 2 reverse side, all the other equal large area are covered copper, and it covers the reverse side metal covering that copper face forms substrate 2.
Wherein, the cross of the present embodiment excitation gap specifically comprises cross shape, rhombus cross.It should be noted that, the shape in excitation gap, except above-mentioned cross, also comprises: I-shaped, in-line, T font, annular, bowtie-shaped, taper, fan-shaped, star, trapezoidal, polygon etc.
The mapping position of substrate 2 back sides in the cross excitation gap 12 in substrate front erodes away the cross gap 19 identical with this cross excitation seam shape, this cross gap 19 is connected with each complanar line branch road 18, the central authorities of this cross gap 19 are provided with encouraging gap 12 and form capacity coupled circular metal face 13, the surrounding of circular metal face 13 is surrounded by cross gap 19, and this circular metal face 13 is not communicated with the reverse side metal covering of above-mentioned substrate 2.Circular metal face 13 can reduce the length in excitation gap 12, is conducive to realize the miniaturization of reception-transmitting antenna.
The other end of the transmission line of two-way crossed linear polarization antenna (the inner, i.e. the first transmission line 9 and the second transmission line 10) is divided into four tunnel line branches by decile two power splitters respectively.
At the periphery of transmission line and line branches, around being provided with plated-through hole 20, plated-through hole 20 is connected substrate obverse and reverse, transmission line and line branches is changed into respectively to complanar line and the complanar line branch road 18 of front metal face.
Adopt complanar line and complanar line branch road 18, the front metal face of above-mentioned substrate 2 and reverse side metal covering are connected, make the two become common ground, reduced the plane wave of transmission line generation in the interference of elect magnetic field, make antenna performance more stable.
Article four, the complanar line branch road above-mentioned cross excitation of 18 excitation gap 12, adopts cross excitation gap, and utilizes decile two power splitters to form a plurality of feedback points, can make the radiation field of antenna formation more symmetrically.
End at complanar line branch road 18 is respectively equipped with metallized metallic vias 14, the end of four road complanar line branch roads 18 is communicated with the front metal face of substrate by metallic vias 14 respectively, be about to end (output) ground connection of complanar line branch road 18, be short circuit, reduced four couplings of presenting between point of complanar line branch road 18 with excitation gap 12 phase feeds.
Miniaturization high-isolation reception-transmitting antenna of the utility model embodiment, by the first transmission line 9 and the second transmission line 10 respectively transmission polarization differ the two-way signal transmission of 90 degree, by decile two power splitter Jiang Mei road signals, be divided into two-way tributary signal, these four complanar line branch roads encourage cross excitation gap simultaneously, form four times feed, the excitation of electromagnetic wave cambered surface radiation fin producing, in lamella space, form the standing wave type electromagnetic field of a plurality of different frequencies, and secondary excitation cambered surface radiation fin, thereby high efficiency forms needed electromagnetic wave, to spatial radiation.The space that lamella space encourages gap 12 and cambered surface radiation fin 1 to form, its space length is less than the quarter-wave of place frequency.
Miniaturization high-isolation reception-transmitting antenna of the utility model embodiment, to differ on the basis of crossed linear polarization antenna of 90 degree in polarization, by adding phase shift 90 degree constant power distributors, make the crossed linear polarization ripple of output in space, form crossed-circle polarized wave.The near field crossed-circle polarized wave of transmission antennas transmit, by the loss of space length and polarization, makes reception antenna obtain corresponding antenna port isolation.
Miniaturization high-isolation reception-transmitting antenna of the utility model embodiment, adopt crossed-circle poliarizing antenna to replace crossed linear polarization antenna, because base station and terminal are crossed linear polarization antennas, when the linear polarized antenna of two quadratures receives a crossed-circle polarized wave, its polarization match factor is 1, reach optimal polarization matching status, and received signal power and dual-mode antenna are location-independent, the direction that does not depend on antenna, two crossed linear polarization antenna receptions of receiving terminal to the energy of circularly polarised wave equate all the time.Same, when crossed-circle poliarizing antenna receives crossed linear polarization ripple, be also like this.Crossed-circle poliarizing antenna replaces crossed linear polarization antenna, and not only receiving ability is better than linear polarized antenna, and makes antenna become a joint from two joints, has improved channel utilization index, has dwindled volume, provides cost savings.
The utility model can have multiple multi-form embodiment; Fig. 1-Fig. 7 take above as example is by reference to the accompanying drawings to the technical solution of the utility model explanation for example; this does not also mean that the applied instantiation of the utility model can only be confined in specific flow process or example structure; those of ordinary skill in the art should understand; the specific embodiments that above provided is some examples in multiple its preferred usage, and the execution mode of any embodiment the utility model claim all should be within technical solutions of the utility model scope required for protection.
Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. a miniaturization high-isolation reception-transmitting antenna, it is characterized in that, comprise reception antenna and transmitting antenna that structure is identical, described reception antenna comprises shell, in described shell, set gradually cambered surface radiation fin, substrate and reflecting plate, the cambered surface surface of described cambered surface radiation fin is bowl-shape setting, the front of described substrate is relative with described cambered surface radiation fin, the front of described substrate is provided with excitation gap, the back side of described substrate is relative with described reflecting plate, the back side of described substrate is provided with the transmission line of the crossed linear polarization antenna of two-way polarization orthogonal, the outer end of the transmission line of the crossed linear polarization antenna of described two-way polarization orthogonal is connected with two inputs of phase shift 90 degree constant power distributors respectively, the outside output cross circular polarized antenna of the output signal of described phase shift 90 degree constant power distributors, the transmission line of described crossed linear polarization antenna encourages described excitation gap.
2. antenna according to claim 1, is characterized in that, the bowl-shape bottom shape of described cambered surface radiation fin comprises disc and plane, and the cambered surface opening of described cambered surface radiation fin can face upward or downward.
3. antenna according to claim 1, is characterized in that, the transmission line of described two-way crossed linear polarization antenna is divided into four tunnel line branches by decile power splitter respectively, and described line branches encourages respectively each section of gap in described excitation gap.
4. antenna according to claim 1, is characterized in that, two inputs of described phase shift 90 degree constant power distributors are connected across the output of the crossed linear polarization antenna transmission line of described two-way polarization orthogonal.
5. according to the antenna described in any one in claim 1-4, it is characterized in that, the shape in described excitation gap comprises: cross shape, rhombus cross, I-shaped, in-line, T font, annular, bowtie-shaped, taper, fan-shaped, star, trapezoidal, polygon.
6. antenna according to claim 3, it is characterized in that, the mapping position of described substrate back in the excitation gap in described substrate front is provided with the cross gap identical with described excitation seam shape, this cross gap is connected with each line branches, the central authorities of this cross gap are provided with described excitation gap and form capacity coupled circular metal face, and the surrounding of described circular metal face is surrounded by described cross gap.
7. antenna according to claim 3, is characterized in that, the end of described four tunnel line branches is communicated with the front metal face in described substrate front by metallic vias respectively.
8. according to the antenna described in claim 3 or 7, it is characterized in that, at the periphery of described transmission line and line branches around being provided with plated-through hole, described plated-through hole is connected the excitation gap in described substrate front with transmission line and the line branches of reverse side, described transmission line and line branches change into respectively complanar line and complanar line branch road.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420450206.XU CN203983481U (en) | 2014-08-11 | 2014-08-11 | A kind of miniaturization high-isolation reception-transmitting antenna |
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| CN201420450206.XU CN203983481U (en) | 2014-08-11 | 2014-08-11 | A kind of miniaturization high-isolation reception-transmitting antenna |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701602A (en) * | 2014-08-11 | 2015-06-10 | 庄昆杰 | Downsizing high-isolation receiving-transmitting antenna |
| CN104702308A (en) * | 2014-12-12 | 2015-06-10 | 庄昆杰 | Micro structure MiMo radio frequency front end assembly |
| CN105577226A (en) * | 2015-12-18 | 2016-05-11 | 西安电子科技大学 | Two-dimensional multi-antenna cancellation method of broadband full-duplex system |
| CN105576359A (en) * | 2014-10-30 | 2016-05-11 | 庄昆杰 | Ultra-wide band miniature cross circularly polarized antenna |
| CN106816717A (en) * | 2016-12-26 | 2017-06-09 | 上海交通大学 | The circular polarized antenna of conical beam |
| CN108400428A (en) * | 2018-03-13 | 2018-08-14 | 广东通宇通讯股份有限公司 | The method and lifting device of ratio before and after a kind of promotion antenna for base station |
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| CN113330645A (en) * | 2018-11-09 | 2021-08-31 | 索尼公司 | Antenna device |
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2014
- 2014-08-11 CN CN201420450206.XU patent/CN203983481U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701602A (en) * | 2014-08-11 | 2015-06-10 | 庄昆杰 | Downsizing high-isolation receiving-transmitting antenna |
| CN105576359A (en) * | 2014-10-30 | 2016-05-11 | 庄昆杰 | Ultra-wide band miniature cross circularly polarized antenna |
| CN104702308A (en) * | 2014-12-12 | 2015-06-10 | 庄昆杰 | Micro structure MiMo radio frequency front end assembly |
| CN105577226A (en) * | 2015-12-18 | 2016-05-11 | 西安电子科技大学 | Two-dimensional multi-antenna cancellation method of broadband full-duplex system |
| CN105577226B (en) * | 2015-12-18 | 2018-10-12 | 西安电子科技大学 | A kind of two-dimentional multiple antennas of broadband full duplex system offsets method |
| CN106816717A (en) * | 2016-12-26 | 2017-06-09 | 上海交通大学 | The circular polarized antenna of conical beam |
| CN108400428A (en) * | 2018-03-13 | 2018-08-14 | 广东通宇通讯股份有限公司 | The method and lifting device of ratio before and after a kind of promotion antenna for base station |
| CN108400428B (en) * | 2018-03-13 | 2023-11-24 | 广东通宇通讯股份有限公司 | Method and device for improving front-to-back ratio of base station antenna |
| CN113330645A (en) * | 2018-11-09 | 2021-08-31 | 索尼公司 | Antenna device |
| CN113330645B (en) * | 2018-11-09 | 2024-04-09 | 索尼公司 | Antenna device |
| CN109584443A (en) * | 2018-11-23 | 2019-04-05 | 北京易植科技有限公司 | Fresh flower vending machine and its control method based on RFID static state Stocktaking mode |
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Granted publication date: 20141203 |