CN104201440A - Dielectric phase shifter of base station electric tunable antenna - Google Patents
Dielectric phase shifter of base station electric tunable antenna Download PDFInfo
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- CN104201440A CN104201440A CN201410416287.6A CN201410416287A CN104201440A CN 104201440 A CN104201440 A CN 104201440A CN 201410416287 A CN201410416287 A CN 201410416287A CN 104201440 A CN104201440 A CN 104201440A
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- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000010363 phase shift Effects 0.000 claims description 20
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010295 mobile communication Methods 0.000 abstract description 2
- 230000033001 locomotion Effects 0.000 description 14
- 230000008859 change Effects 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Abstract
The invention applies to the mobile communication base station antenna and radio frequency field, and provides a dielectric phase shifter of a base station electric tunable antenna. The dielectric phase shifter of the base station electric tunable antenna comprises a cover plate, a bottom plate, a slide mechanism, at least one guide pillar and a feed network, wherein the slide mechanism comprises a slide plate and a phase shifting piece, the phase shifting piece comprises an upper phase shifting piece and a lower phase shifting piece, the slide plate is provided with at least two slide grooves, the phase shifting piece penetrates through and slides in the slide groove, at least two fixing pieces penetrate through the slide plate, the at least one guide pillar is fixed on the bottom plate, the lower phase shifting piece is provided with a guiding groove, the at least one guide pillar penetrates through the guiding groove in the lower phase shifting piece, the feed network is arranged on the bottom plate, and the phase shifting piece moves in a plane space on the surface of the feed network. Accordingly, the dielectric phase shifter of the base station electric tunable antenna achieves phase shifting effects in a large range.
Description
Technical field
The present invention relates to antenna of mobile communication base station and RF application, relate in particular to a kind of dielectric phase shifter of electric tuning antenna of base station.
Background technology
Phase shifter is a kind of necessary parts that is applied to electric tuning antenna of base station, can change the beam scanning angle of array antenna, i.e. angle of declination, and therefore electrical tilt antenna can, by adjusting the phase shift position of phase shifter, change the coverage of antenna beam flexibly.In principle, the passive phase shifter that realization is applied to electric tuning antenna of base station generally has following two kinds of modes:
First kind of way is loaded medium in feeder line.In the process of electromagnetic transmission, the loading of medium can change the dielectric constant of transmission medium, thereby changes electromagnetic wavelength, is equivalent to the variation of electromagnetic wave stroke, i.e. the variation of current feed phase.This method realizes simple, but due to the introducing of medium, can cause changes in amplitude that feeder line is larger and larger insertion loss.
The second way is the length that changes feeder line in phase shifter.The length increasing or reduce feeder line namely directly increases or reduces electromagnetic stroke, thereby reaches the variation of current feed phase.Use this phase-moving method, feeder line changes in amplitude is little, insertion loss is little, but some implementation method can make amount of phase shift nonlinear change, and structure realizes more complicated.
The phase shifter of existing first kind of way, if the patent No. is the Miniaturized phase shifter for TD-SCDMA electrically controlled intelligent antenna as described in the patent documentation of CN 101651242 B, this design exists that volume is large, design complexity is high and the problem such as poor linearity.In particular for the phase shifter design of super wideband, there is the problems such as amount of phase shift deficiency and volume are large.These problems cause the package space of network design few on the one hand, make on the other hand complete machine tilt angled down not and machine volume excessive.
In summary, in actual use, obviously there is inconvenience and defect in prior art, so be necessary to be improved.
Summary of the invention
For above-mentioned defect, the object of the present invention is to provide a kind of dielectric phase shifter of electric tuning antenna of base station, its be there is good intermodulation characteristic, larger amount of phase shift, be applicable to 1.71～2.7GHz band limits, there is larger amount of phase shift, less changes in amplitude, amount of phase shift and phase shifter move into the dielectric phase shifter that between distance, the linearity is good and volume is small and exquisite.
To achieve these goals, the invention provides a kind of dielectric phase shifter of electric tuning antenna of base station, comprise cover plate, base plate, also comprise a slide mechanism, and described slide mechanism is arranged between described cover plate and described base plate, described slide mechanism comprises at least one slide plate and phase plate, described phase plate comprises phase plate, lower phase plate, at least two chutes of described slide plate setting, described phase plate wears and slides in described chute by least two fixtures, at least two fixtures is set and is arranged in described slide plate;
Described phase shifter is also provided with at least one lead, and described lead is fixed on described base plate, and described phase plate is provided with gathering sill, and described lead is arranged in the described gathering sill of described lower phase plate; Be provided with feeding network on described base plate, described phase plate moves at the plane space on described feeding network surface; The element length of described feeding network is between 0.4～0.6 times of centre frequency wavelength, and the resistance value scope that described feeding network is covered in the part under described phase plate is 35～50 ohm.
According to phase shifter of the present invention, the described chute of described slide plate comprises two translots, two skewed slots, described slide plate both sides two the described translots that be arranged in parallel, in every described translot, wear a described fixture, the middle part of described slide plate is also provided with two described skewed slots and separates described translot, and described slide plate one side is provided with reference column;
Described upper phase plate is detachable connection with described lower phase plate, and every a slice of described phase plate has three dieelctric sheets and one-body molded, and the structure of described phase plate is for being symmetrical arranged.
According to phase shifter of the present invention, described upper phase plate connects by nested column sleeve with described lower phase plate, and described nested post has two, and slip is arranged in two described skewed slots of described slide plate;
Described fixture comprises pin, cushion cover, described pin and the socket of described cushion cover.
According to phase shifter of the present invention, the described reference column on described slide plate is also provided with barb on one side, and described phase plate can connect a pull bar by described reference column, described barb, and described pull bar connects multiple described phase shifters by described reference column.
According to phase shifter of the present invention, the material of described phase plate is pottery or the plastic material of high-k.
According to phase shifter of the present invention, the working frequency range scope of described phase shifter is 1710～2700MHz.
According to phase shifter of the present invention, the phase-shift phase of described phase shifter is 50 degree to 60 degree.
The dielectric phase shifter of electric tuning antenna of base station of the present invention, by inserting the implementation of medium, adopts and inserts medium method phase-shift theory, without non-linear electric connection point, has good intermodulation characteristic; Accurate structural design, makes driving error little, and the precision that has a down dip is high, and ensures that transmission is smooth and easy; Phase plate uses high-k plastics or pottery, can realize larger phase shift range; Special phase plate shape design has been played very big effect in reduction changes in amplitude; When the linear movement of phase plate, amount of phase shift is linear change.
Brief description of the drawings
Fig. 1 is the schematic appearance of the dielectric phase shifter of electric tuning antenna of base station of the present invention;
Fig. 2 is the perspective exploded view of the dielectric phase shifter of electric tuning antenna of base station of the present invention;
Fig. 3 is the phase plate structural representation of the dielectric phase shifter of electric tuning antenna of base station of the present invention;
Fig. 4 A is standing-wave ratio and the phase place schematic diagram of the initial condition of the dielectric phase shifter of electric tuning antenna of base station of the present invention;
Fig. 4 B is standing-wave ratio and the phase place schematic diagram of the end-state of the dielectric phase shifter of electric tuning antenna of base station of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The invention provides a kind of dielectric phase shifter of electric tuning antenna of base station, object is to realize without non-linear electric connection point, driving error is little, the precision that has a down dip is high, can realize larger phase shift range, and when the linear movement of phase plate, amount of phase shift is linear change.
The technical solution used in the present invention is that a kind of transmission medium is that air and basic transmission mode are the dielectric phase shifter of the strip line transmission structure of TEM mould.Its cover plate, base plate and feeding network form strip lines configuration, and phase plate covers the upper and lower surface of feeding network, is illustrated below with reference to diagram.
For achieving the above object, the invention provides a kind of dielectric phase shifter of electric tuning antenna of base station, as shown in Figure 1, comprise cover plate 1 and base plate 2, also comprise a slide mechanism, and be arranged between described cover plate 1 and base plate 2.As shown in Figure 2, described slide mechanism comprises a slide plate 5, phase plate 4, and phase plate 4 comprises phase plate, lower phase plate, and slide plate 5 arranges at least two chutes.The described chute of slide plate 5 comprises two translots 12, two skewed slots 13, slide plate 5 both sides two translots 12 that be arranged in parallel, the middle part of slide plate 5 is also provided with two described skewed slots 13 and separates translot 12, and slide plate 5 one sides are provided with reference column 15, and reference column 15 points to slide plate 5 planes outsides.Phase plate 4 wears and slides in described skewed slot 13, two fixtures 6 is set and is fixed on base plate 2, and be located in the translot 12 of slide plate 5, and in phase plate and described lower phase plate, seam is along described runner movement on described for slide plate 5, and transmission is to phase plate 4.
Also be provided with a lead 7, lead 7 is fixed on base plate 2, and phase plate 4 is provided with gathering sill 11, and lead 7 is arranged in the gathering sill 11 of described lower phase plate, and lead 7 is screwed onto on base plate 2 simultaneously.Being provided with feeding network 3 is fixed on base plate 2, phase plate 4 moves at the plane space on feeding network 3 surfaces, phase plate 4 can be followed slide plate 5 from feeding network 3 border continuous movings until phase plate 4 moves to the end of the described chute of slide plate 5, the middle seam of described upper phase plate and described lower phase plate holds feeding network 3, the element length of feeding network 3 is between 0.4～0.6 times of centre frequency wavelength, the resistance value scope that feeding network 3 is covered in the part in described phase plate is 35～50 ohm, is more preferably and is set to 50 ohm.
Described upper phase plate is detachable connection with described lower phase plate, the described upper phase plate that is more preferably phase plate 4 connects by nested column sleeve with described lower phase plate, described upper phase plate, described lower phase plate are connected as a single entity, described nested post has two, in Fig. 3, nested bolt 9 forms described nested post with nested cylinder 10 and is arranged in respectively in two skewed slots 13 of slide plate 5.Every a slice of described phase plate has three dieelctric sheets and one-body molded, the structure of described phase plate 4 is for being symmetrical arranged, the dieelctric sheet in the middle of being positioned at and the dieelctric sheet that is distributed in both sides are symmetrical arranged, the area of the described dieelctric sheet that has gathering sill 11 in the middle of being positioned at is larger, and the area of the described dieelctric sheet on both sides is less.
The described nested post that connects described upper phase plate and described lower phase plate is through in the skewed slot 13 of slide plate 5, and lead 7 is fixed on base plate 2, and is located in the gathering sill 11 of center of the described lower phase plate of phase plate 4.The gathering sill 11 of the center position on lead 7 and phase plate 4 ensures the rectilinear motion of phase plate 4, and direction is vertical with skateboarding direction.
As shown in Figure 3, nested bolt 9 is that two phase plates 4 are nested together with the effect of nested cylinder 10, and ensures spacing, is through the motion that makes the motion of slide plate 5 drive phase plate 4 in slide plate 5 simultaneously.In gathering sill 11, be interspersed with lead 7, the effect of gathering sill 11 and lead 7 is the rectilinear motions that ensure phase plate 4, and feeding network 3 one sides are vertical with gathering sill 11 directions.
Fixture 6 comprises pin, cushion cover, described pin and the socket of described cushion cover, and being more preferably fixture 6 is plastic fixtures, and for fixing the plastics cushion cover 8 of feeding network 3, as shown in Figure 2.Slide plate 5 can be realized with plastics, in the translot 12 on slide plate 5, is installed with fixture 6, and the length of translot 12 has determined the range of movement of slide plate 5.In skewed slot 13, be installed with the described nested post of phase plate 4, the angle of inclination of skewed slot 13 and length, determined the moving range of phase plate 4.Under the restriction of translot 12, skewed slot 13, in the time of described slide plate 5 setting in motion, the direction of motion of slide plate 5 is vertical with the direction of motion of phase plate 4.
Phase shifter in the present embodiment, feeding network 3 covers the impedance of the part in phase plate 4 between 35～50 ohm, is set to 50 ohm, and the phase-shift phase of phase shifter is 50 degree to 60 degree, has realized with less size and has obtained larger amount of phase shift.Thus, phase shifter is along rectilinear movement direction, and the area coverage of phase plate 4 on feeding network 3 is along with increasing progressively gradually of angle of declination becomes large and the linearity is good.The adjusting of the spacing of the right and left dieelctric sheet and intermediate medium sheet can realize impedance matching, and when this moves medium phase plate, the immigration distance of phase-shift phase and medium phase plate is linear.
In the moving process of phase plate 4, can realize displacement linear change, be more preferably, the material of phase plate 4 is materials of high-k, low tangent loss angle, as plastics or pottery, its dielectric constant is 9.0 left and right, can realize large-scale phase-shift phase and change, and feeding network 3 is metal materials, the working frequency range scope of described phase shifter is 1710～2700MHz, and when mobile in feeding network 3 of phase plate 4, amount of phase shift is linear change.
In this embodiment, when being moved in complete feeding network, medium phase plate is convenient to move in and out the upper and lower space of air layer network of strip line, medium phase plate moves into direction has 1mm length to be mounted on network, it is now initial condition, now standing-wave ratio and phase place (this phase place is calibration phase place), as shown in Figure 4 A.In the time that the relative initial condition of medium phase plate moves into 10mm again, be set as end-state, now standing-wave ratio and phase place are as shown in Figure 4 B.
Reference column on slide plate 5 15 is also provided with barb 14 on one side, and phase plate 4 can connect a pull bar by reference column 15, barb 14, and described pull bar connects multiple described phase shifters by described reference column.The effect of barb 14 is that phase plate 4 is through on pull bar and prevents from coming off.The effect of reference column 15 is that described pull bar pulls slide plate 5 to move by described being fixed on of phase plate 4 pull bar, and described phase shifter plays phase shift effect in a complete secondary feeding network, makes antenna pattern obtain the desirable effect that has a down dip.
In sum, in the dielectric phase shifter of electric tuning antenna of base station of the present invention, in each slide mechanism, phase plate has upper and lower two, nest together by the nested post on phase plate, in upper and lower phase plate, slide plate is housed, plastic fixtures is through in the translot of slide plate, make slide plate movable within the specific limits, the nested post of phase plate is through in the skewed slot of slide plate, the movement of the mobile drive phase plate of slide plate in feeding network.Feeding network is metal material, is fixed on base plate with plastics cushion cover.When the movement of slide plate is moved phase plate, there is change in transmission medium, originally be that the transmission medium of air is due to the intervention of phase plate, there is change in dielectric constant, thereby change the wavelength of signal transmission, be the corresponding change of transmission distance of signal, the phase place of signal changes immediately, reaches the effect of good phase shift.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (7)
1. the dielectric phase shifter of an electric tuning antenna of base station, it is characterized in that, comprise cover plate, base plate and a slide mechanism, and described slide mechanism is arranged between described cover plate and described base plate, described slide mechanism comprises a slide plate and phase plate, and described phase plate comprises phase plate, lower phase plate, and described slide plate setting has two chutes at least, described phase plate wears and slides in described chute by least two fixtures, at least two fixtures is set and is arranged in described slide plate;
Described phase shifter is also provided with at least one lead, and described lead is fixed on described base plate, and described phase plate is provided with gathering sill, and described lead is arranged in the described gathering sill of described lower phase plate; Be provided with feeding network on described base plate, described phase plate moves at the plane space on described feeding network surface; The element length of described feeding network is between 0.4～0.6 times of centre frequency wavelength, and the resistance value scope that described feeding network is covered in the part under described phase plate is 35～50 ohm.
2. phase shifter according to claim 1, it is characterized in that, the described chute of described slide plate comprises two translots, two skewed slots, described slide plate both sides two the described translots that be arranged in parallel, in every described translot, wear a described fixture, the middle part of described slide plate is also provided with two described skewed slots and separates described translot, and described slide plate one side is provided with reference column;
Described upper phase plate is detachable connection with described lower phase plate, and every a slice of described phase plate has three dieelctric sheets and one-body molded, and the structure of described phase plate is for being symmetrical arranged.
3. phase shifter according to claim 2, is characterized in that, described upper phase plate connects by nested column sleeve with described lower phase plate, and described nested post has two, and slip is arranged in two described skewed slots of described slide plate;
Described fixture comprises pin, cushion cover, described pin and the socket of described cushion cover.
4. phase shifter according to claim 2, it is characterized in that, described reference column on described slide plate is also provided with barb on one side, and described phase plate can connect a pull bar by described reference column, described barb, and described pull bar connects multiple described phase shifters by described reference column.
5. phase shifter according to claim 1, is characterized in that, the pottery of high-k or plastic material.
6. phase shifter according to claim 1, is characterized in that, the working frequency range scope of described phase shifter is 1710～2700MHz.
7. phase shifter according to claim 1, is characterized in that, the phase-shift phase of described phase shifter is 50 degree to 60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410416287.6A CN104201440A (en) | 2014-08-21 | 2014-08-21 | Dielectric phase shifter of base station electric tunable antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410416287.6A CN104201440A (en) | 2014-08-21 | 2014-08-21 | Dielectric phase shifter of base station electric tunable antenna |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546443A (en) * | 2016-06-28 | 2018-01-05 | 广州司南天线设计研究所有限公司 | A kind of asymmetric medium block debugging apparatus of dielectric phase shifter |
| CN107565193A (en) * | 2016-06-30 | 2018-01-09 | 广州司南天线设计研究所有限公司 | A kind of symmetrical medium block debugging apparatus of dielectric phase shifter |
| EP3244479A4 (en) * | 2015-01-05 | 2018-08-22 | Alcatel-Lucent Shanghai Bell Co., Ltd. | Phase shifting device and electric tilt antenna |
| CN109193082A (en) * | 2018-08-10 | 2019-01-11 | 昆山恩电开通信设备有限公司 | Compact integrated phase shifter |
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| EP1368893A2 (en) * | 2001-03-08 | 2003-12-10 | HRL Laboratories, LLC | Continuously tunable phase shifter |
| CN201369377Y (en) * | 2009-02-13 | 2009-12-23 | 广东通宇通讯设备有限公司 | Phase shifter module based on medium loading |
| CN201623242U (en) * | 2009-11-06 | 2010-11-03 | 中国科学技术大学 | Microwave and millimeter wave multi-stub load line phase shifter |
| CN201699109U (en) * | 2010-04-21 | 2011-01-05 | 摩比天线技术（深圳）有限公司 | Phase shifter of base station electric-adjustable antenna |
| CN203760595U (en) * | 2014-01-21 | 2014-08-06 | 摩比天线技术（深圳）有限公司 | Phase shifter for electrically adjustable base station antenna |
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2014
- 2014-08-21 CN CN201410416287.6A patent/CN104201440A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1368893A2 (en) * | 2001-03-08 | 2003-12-10 | HRL Laboratories, LLC | Continuously tunable phase shifter |
| CN201369377Y (en) * | 2009-02-13 | 2009-12-23 | 广东通宇通讯设备有限公司 | Phase shifter module based on medium loading |
| CN201623242U (en) * | 2009-11-06 | 2010-11-03 | 中国科学技术大学 | Microwave and millimeter wave multi-stub load line phase shifter |
| CN201699109U (en) * | 2010-04-21 | 2011-01-05 | 摩比天线技术（深圳）有限公司 | Phase shifter of base station electric-adjustable antenna |
| CN203760595U (en) * | 2014-01-21 | 2014-08-06 | 摩比天线技术（深圳）有限公司 | Phase shifter for electrically adjustable base station antenna |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3244479A4 (en) * | 2015-01-05 | 2018-08-22 | Alcatel-Lucent Shanghai Bell Co., Ltd. | Phase shifting device and electric tilt antenna |
| US10411346B2 (en) | 2015-01-05 | 2019-09-10 | Nokia Shanghai Bell Co., Ltd. | Phase shifting apparatus and electrically adjustable antenna |
| CN107546443A (en) * | 2016-06-28 | 2018-01-05 | 广州司南天线设计研究所有限公司 | A kind of asymmetric medium block debugging apparatus of dielectric phase shifter |
| CN107546443B (en) * | 2016-06-28 | 2023-10-24 | 广州司南技术有限公司 | Asymmetric dielectric block debugging device of dielectric phase shifter |
| CN107565193A (en) * | 2016-06-30 | 2018-01-09 | 广州司南天线设计研究所有限公司 | A kind of symmetrical medium block debugging apparatus of dielectric phase shifter |
| CN107565193B (en) * | 2016-06-30 | 2023-08-25 | 广州司南技术有限公司 | Medium block debugging device with symmetrical medium phase shifter |
| CN109193082A (en) * | 2018-08-10 | 2019-01-11 | 昆山恩电开通信设备有限公司 | Compact integrated phase shifter |
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Application publication date: 20141210 |