CN102255118B - Phase shifter, phase shift network and electrically-controlled antenna - Google Patents
Phase shifter, phase shift network and electrically-controlled antenna Download PDFInfo
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- CN102255118B CN102255118B CN201010177593.0A CN201010177593A CN102255118B CN 102255118 B CN102255118 B CN 102255118B CN 201010177593 A CN201010177593 A CN 201010177593A CN 102255118 B CN102255118 B CN 102255118B
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Abstract
The invention is suitable for the field of antennae, and provides a phase shifter, a phase shift network and an electrically-controlled antenna. The phase shifter comprises a fixed unit, a guide unit and a sliding unit, wherein the fixed unit comprises a fixed plate and two microstrip lines fixed on the fixed plate; and the sliding unit comprises a T-shaped sliding lead which is fixed together with the guide unit, and the top end and the tail end of the T-shaped sliding lead are respectively in contact with the two microstrip lines correspondingly in a sliding manner. The phase shifter, the phase shift network and the electrically-controlled antenna provided by the invention can ensure larger phase shift quantity on the premise of low standing-wave ratio, small insertion loss and better phase linear change characteristic in a phase shift process; and the phase shifter has better frequency characteristic and large bandwidth.
Description
Technical field
The invention belongs to field of antenna, relate in particular to a kind of phase shifter, phase-shift network and electrical tilt antenna.
Background technology
In mobile communication, electrical tilt antenna, with its angle modulation feature easily, is more and more used.Particularly urban architecture is at present more and more higher, and telephone traffic is increasing, and the demand of large angle of declination electrical tilt antenna is also increasing.
The operation principle of electrical tilt antenna is by electric means, to change the relative phase of radiating element input signal, thereby realizes the adjustment at downwards bevel beam angle.The phase shifter that changes radiating element input signal relative phase has just become the core component of electrical tilt antenna.
In prior art, common phase shifter cannot guarantee to realize larger amount of phase shift under prerequisite low in standing-wave ratio, that insertion loss is little, phase linearity variation characteristic is good in phase shift process.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of phase shifter, and being intended to solve phase shifter common in prior art cannot be in the problem that guarantees to realize under prerequisite low in standing-wave ratio, that insertion loss is little, phase linearity variation characteristic is good in phase shift process larger amount of phase shift.
The embodiment of the present invention is achieved in that a kind of phase shifter, comprises fixed cell, pilot unit and sliding unit; Described fixed cell comprises fixed head and is fixed on two microstrip lines on fixed head; Described sliding unit comprises T-shaped slide wire, and described T-shaped slide wire and described pilot unit are fixed together, the top of described T-shaped slide wire and tail end respectively with described two corresponding sliding contacts of microstrip line.
The embodiment of the present invention also provides a kind of phase-shift network, and described phase-shift network comprises described phase shifter and the second phase shifter;
Described the second phase shifter comprises fixed cell, pilot unit and sliding unit, described fixed cell comprises fixed head and is fixed on two microstrip lines on fixed head, described sliding unit comprises U-shaped slide wire, described U-shaped slide wire and described pilot unit are fixed together, the top of described U-shaped slide wire and tail end respectively with described two corresponding sliding contacts of microstrip line;
Two ports of described phase shifter are for being connected with a pair of radiating element respectively, and described the second phase shifter is connected with described phase shifter by feeding network.
The embodiment of the present invention also provides a kind of electrical tilt antenna, and described electrical tilt antenna comprises described phase-shift network.
The embodiment of the present invention compared with prior art, beneficial effect is: by T-shaped slide wire, can guarantee to realize larger amount of phase shift under prerequisite low in standing-wave ratio, that insertion loss is little, phase linearity variation characteristic is good in phase shift process, and phase shifter frequency characteristic is good, is with wide.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of the phase shifter that provides of the embodiment of the present invention;
Fig. 2 is the structural representation of the sliding unit of the phase shifter that provides of the embodiment of the present invention;
Fig. 3 is the structural representation of the fixed cell of the phase shifter that provides of the embodiment of the present invention;
Fig. 4 is the decomposing schematic representation of the second phase shifter of providing of the embodiment of the present invention;
Fig. 5 is the structural representation of the sliding unit of the second phase shifter of providing of the embodiment of the present invention;
Fig. 6 is the structural representation of the fixed cell of the second phase shifter of providing of the embodiment of the present invention;
Fig. 7 is a topology example figure of the phase-shift network that provides of the embodiment of the present invention;
Fig. 8 is another topology example figure of the phase-shift network that provides of the embodiment 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.
In the embodiment of the present invention, by T-shaped slide wire, can guarantee to realize larger amount of phase shift under prerequisite low in standing-wave ratio, that insertion loss is little, phase linearity variation characteristic is good in phase shift process, and phase shifter frequency characteristic is good, is with wide.
Refer to Fig. 1 to Fig. 3, a kind of phase shifter that the embodiment of the present invention provides, comprises fixed cell, pilot unit and sliding unit;
Described fixed cell comprises fixed head 3 and is fixed on two microstrip lines 4 on fixed head 3;
Described sliding unit comprises T-shaped slide wire 2, and described T-shaped slide wire 2 is fixed together with described pilot unit, the top of described T-shaped slide wire 2 and tail end respectively with described two corresponding sliding contacts of microstrip line 4.
In an embodiment of the present invention, described pilot unit also comprises fixture 6 and gathering sill 5, and described fixture 6 is fixed through gathering sill 5 and described fixed cell.
In an embodiment of the present invention, described fixture 6 can be specially pin, can certainly, for other fixtures, be not limited to this.
In an embodiment of the present invention, between described T-shaped slide wire 2 and described two microstrip lines 4, be also provided with dielectric layer 1;
Described T-shaped slide wire 2 is fixed on described dielectric layer 1 top, described dielectric layer 1 bottom and described two microstrip line 4 sliding contacts.
In an embodiment of the present invention, described dielectric layer 1 is specially pcb board.
In application, T-shaped slide wire 2 can be etched in to pcb board top.
In an embodiment of the present invention, described two microstrip line 4 length not etc., are not parallel to each other, and part relatively.In concrete application, the length separately of two microstrip lines 4 and the relative length of two two microstrip lines 4 can be set as required.
In an embodiment of the present invention, the port of described phase shifter comprises in two microstrip lines 4 two ends of long, i.e. port P2 and port P3; And one end of shorter one, i.e. port P1.
In the phase shifter of the embodiment of the present invention, by port P1 respectively with the relative electrical length of port P2 and port P3, thereby change the relative phase between port, reach the object of phase shift.Change amount Δ δ=2* β Δ L of phase place, the change amount that wherein Δ δ is phase place, β is phase factor, Δ L is mobile length.
Phase shifter in the present embodiment, by T-shaped slide wire 2, can guarantee to realize larger amount of phase shift under prerequisite low in standing-wave ratio, that insertion loss is little, phase linearity variation characteristic is good in phase shift process.More than the amount of phase shift of phase shifter can reach 100 degree, the angle of declination scope of electrical tilt antenna is reached more than 15 °.And phase shifter frequency characteristic is good, be with widely, be applicable to very much the broadband requirement of wideband electrical tilt antenna to phase shifter, can not cause harmful effect to applying the bandwidth of the phase-shift network of this phase shifter yet.And, can realize phase shifter and T-shaped power division network dual-use function.
And, by T-shaped slide wire 2 being fixed on to described dielectric layer 1 top, dielectric layer 1 bottom and described two microstrip line 4 sliding contacts, can make dielectric layer 1 bottom and fixed cell partly be close to, T-shaped slide wire 2 does not directly contact with the microstrip line 4 of fixed cell, thereby the phase shifter of the embodiment of the present invention reaches good intermodulation index.
For convenient description explanation below, by foregoing phase shifter called after the first phase shifter.
The embodiment of the present invention also provides a kind of phase-shift network, and described phase-shift network comprises the first phase shifter and the second phase shifter;
Refer to Fig. 4 to Fig. 6, described the second phase shifter comprises fixed cell, pilot unit and sliding unit, described fixed cell comprises fixed head 9 and is fixed on two microstrip lines 10 on fixed head 9, described sliding unit comprises U-shaped slide wire 8, described U-shaped slide wire 8 is fixed together with described pilot unit, the top of described U-shaped slide wire 8 and tail end respectively with described two corresponding sliding contacts of microstrip line 10;
Two ports of the first phase shifter are for being connected with a pair of radiating element respectively, and the second phase shifter is connected with the first phase shifter by feeding network.
In an embodiment of the present invention, between the U-shaped slide wire 8 of the second phase shifter and two microstrip lines 10, be also provided with dielectric layer 7, the U-shaped slide wire wire 8 of the second phase shifter is fixed on dielectric layer 7 tops, dielectric layer 7 bottoms and described two microstrip line 10 sliding contacts.
In an embodiment of the present invention, two microstrip lines 10 of the second phase shifter are equal in length, be parallel to each other, completely relative.
In an embodiment of the present invention, the pilot unit of the second phase shifter also comprises fixture 11 and gathering sill 12, and described fixture 11 is fixed through gathering sill 12 and described fixed cell.
In an embodiment of the present invention, the fixture 11 of the second phase shifter can be specially pin, can certainly, for other fixtures, be not limited to this.
In an embodiment of the present invention, the dielectric layer 7 of the second phase shifter is specially pcb board.
In application, the U-shaped slide wire 8 of the second phase shifter can be etched in to pcb board top.
In an embodiment of the present invention, the port of the second phase shifter comprises two microstrip lines 10 one end separately, i.e. port P4 and P5.
In an embodiment of the present invention, in the second phase shifter, by relatively moving between sliding unit and fixed cell, change the port P4 of the second phase shifter and the electrical length between P5, reach the object of phase shift.Change amount Δ δ=2* β Δ L of phase place, the change amount that wherein Δ δ is phase place, β is phase factor, Δ L is mobile length.
In an embodiment of the present invention, the second phase shifter is by dielectric layer 7, can guarantee to realize larger amount of phase shift under prerequisite low in standing-wave ratio, that insertion loss is little, phase linearity variation characteristic is good in phase shift process.More than the amount of phase shift of the second phase shifter can reach 100 degree, the angle of declination scope of electrical tilt antenna is reached more than 15 °.And the second phase shifter frequency characteristic is good, be with widely, be applicable to very much the broadband requirement of wideband electrical tilt antenna to phase shifter, can not cause harmful effect to applying the bandwidth of the phase-shift network of this second phase shifter.
And, by U-shaped slide wire 8 being fixed on to described dielectric layer 7 tops, dielectric layer 7 bottoms and described two microstrip line 10 sliding contacts, can make dielectric layer 7 bottoms and fixed cell partly be close to, U-shaped slide wire 8 does not directly contact with the microstrip line 10 of fixed cell, thereby makes the second phase shifter in the embodiment of the present invention reach good intermodulation index.
In an embodiment of the present invention, the pilot unit being fixed together of the second phase shifter and the first phase shifter and sliding unit are fixed as one by same fixture.Thereby can realize unified interlock, make to do Linear-moving together with the first phase shifter of whole phase-shift network and the sliding unit of the second phase shifter, change port to the relative electrical length between each radiating element, thereby reach the object of whole phase-shift network phase shift.
Wherein, two ports that are connected with a pair of radiating element respectively of the first phase shifter are respectively port P2 and P3.
Referring to Fig. 7, is an exemplary plot of the phase-shift network of the embodiment of the present invention, and described phase-shift network 75 comprises the first phase shifter A1, A2, A3, A4 and A5 and the second phase shifter B1, B2, B3, B4, B5, B6 and B7.Wherein the P2 of the first phase shifter A1, A2, A3, A4 and A5 is respectively used to be connected a pair of radiating element 74 with P3 port, and the quantity of the radiating element 74 connecting in figure is 10.
In application, between described phase-shift network 75 and described radiating element 74, be also provided with reflecting plate 73.
Referring to Fig. 8, is another exemplary plot of the phase-shift network of the embodiment of the present invention, and described phase-shift network 85 comprises the first phase shifter A1, A2, A3 and A4 and the second phase shifter B1, B2, B3, B4, B5 and B6.Wherein the P2 of the first phase shifter A1, A2, A3 and A4 is respectively used to be connected a pair of radiating element 84 with P3 port, and the quantity of the radiating element 84 connecting in figure is 9.Certainly in concrete application, the quantity of radiating element can be determined as required.
In application, between described phase-shift network 85 and described radiating element 84, be also provided with reflecting plate 83.
The equal difference that is varied to that the phase-shift network of the embodiment of the present invention can be realized the relative phase of each radiating element input signal changes.
The embodiment of the present invention also provides a kind of electrical tilt antenna, and described electricity adjusts electric wire to comprise described phase-shift network.
Electrical tilt antenna of the present invention, can increase angle of declination angle modulation scope.
The phase shifter that the present invention sends out, phase-shift network and electrical tilt antenna, by T-shaped slide wire, can guarantee to realize larger amount of phase shift under prerequisite low in standing-wave ratio, that insertion loss is little, phase linearity variation characteristic is good in phase shift process, and phase shifter frequency characteristic is good, is with wide.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a phase shifter, comprises fixed cell, pilot unit and sliding unit; Described fixed cell comprises fixed head and is fixed on two microstrip lines on fixed head; It is characterized in that, described two microstrip line length do not wait, are parallel to each other and be partly relative, described sliding unit comprises T-shaped slide wire, described T-shaped slide wire and described pilot unit are fixed together, the top of described T-shaped slide wire and tail end respectively with described two corresponding sliding contacts of microstrip line, between described T-shaped slide wire and described two microstrip lines, be also provided with dielectric layer, described T-shaped slide wire is fixed on described dielectric layer top, described dielectric layer bottom and described two microstrip line sliding contacts.
2. phase shifter as claimed in claim 1, is characterized in that, described pilot unit also comprises fixture and gathering sill, and described fixture is fixed through gathering sill and described fixed cell.
3. phase shifter as claimed in claim 1, is characterized in that, described dielectric layer is specially pcb board.
4. a phase-shift network, is characterized in that, described phase-shift network comprises phase shifter claimed in claim 1 and the second phase shifter;
Described the second phase shifter comprises fixed cell, pilot unit and sliding unit, described fixed cell comprises fixed head and is fixed on two microstrip lines on fixed head, described sliding unit comprises U-shaped slide wire, described U-shaped slide wire and described pilot unit are fixed together, the top of described U-shaped slide wire and tail end respectively with described two corresponding sliding contacts of microstrip line;
Two ports of phase shifter claimed in claim 1 are for being connected with a pair of radiating element respectively, and described the second phase shifter is connected with phase shifter claimed in claim 1 by feeding network.
5. phase-shift network as claimed in claim 4, it is characterized in that, between the U-shaped slide wire of described the second phase shifter and two microstrip lines, be also provided with dielectric layer, the U-shaped slide wire wire of described the second phase shifter is fixed on dielectric layer top, dielectric layer bottom and described two microstrip line sliding contacts.
6. phase-shift network as described in claim 4 or 5, is characterized in that, two microstrip lines of described the second phase shifter are equal in length, be parallel to each other, completely relative.
7. the phase-shift network as described in claim 4 or 5, is characterized in that, the pilot unit being fixed together and the sliding unit of described the second phase shifter and phase shifter claimed in claim 1 are fixed as one by same fixture.
8. an electrical tilt antenna, is characterized in that, described electrical tilt antenna comprises the phase-shift network described in claim 4 or 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010177593.0A CN102255118B (en) | 2010-05-17 | 2010-05-17 | Phase shifter, phase shift network and electrically-controlled antenna |
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| CN201010177593.0A CN102255118B (en) | 2010-05-17 | 2010-05-17 | Phase shifter, phase shift network and electrically-controlled antenna |
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| CN102255118B true CN102255118B (en) | 2014-05-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2953151A1 (en) * | 2014-06-02 | 2015-12-09 | Tektronix, Inc. | Millimeter-wave electro-mechanical stripline switch |
| US9577301B2 (en) | 2013-02-04 | 2017-02-21 | Comba Telecom System (China) Ltd. | Dielectric phase-shift module and phase-shift unit thereof, feeding network and antenna |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117425A (en) * | 2013-02-07 | 2013-05-22 | 武汉虹信通信技术有限责任公司 | Continuously adjustable phase-shifting device |
| EP2849388B1 (en) * | 2013-09-11 | 2017-04-26 | Siemens Aktiengesellschaft | Contact rail network for the communication of stationary systems with at least one system component having a variable position |
| CN104183890B (en) * | 2014-08-04 | 2017-05-10 | 京信通信技术(广州)有限公司 | Phase shift unit |
| CN111129710B (en) * | 2019-12-27 | 2022-03-25 | 京信通信技术(广州)有限公司 | Auxiliary device and antenna |
| CN112803163B (en) * | 2020-12-31 | 2022-05-03 | 华南理工大学 | Phase shift circuit, phase shifter and antenna |
| WO2022156385A1 (en) * | 2021-01-19 | 2022-07-28 | Telefonaktiebolaget Lm Ericsson (Publ) | Device for power dividing and phase shifting |
| CN113300060B (en) * | 2021-07-01 | 2022-07-12 | 江苏亨鑫科技有限公司 | Dual-mode phase shifting device and antenna |
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| WO2007077442A1 (en) * | 2006-01-05 | 2007-07-12 | Jaybeam Limited | An electro-magnetic energy coupler and an antenna array |
| WO2008084296A1 (en) * | 2006-12-21 | 2008-07-17 | Nokia Corporation | Antenna feed arrangement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9577301B2 (en) | 2013-02-04 | 2017-02-21 | Comba Telecom System (China) Ltd. | Dielectric phase-shift module and phase-shift unit thereof, feeding network and antenna |
| EP2953151A1 (en) * | 2014-06-02 | 2015-12-09 | Tektronix, Inc. | Millimeter-wave electro-mechanical stripline switch |
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| CN102255118A (en) | 2011-11-23 |
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Effective date of registration: 20211015 Address after: 518000 Mobi Building, No. 17, Science and Technology North Road, Xili Street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: MOBI ANTENNA TECHNOLOGIES (SHENZHEN) Co.,Ltd. Patentee after: MOBI TECHNOLOGY (SHENZHEN) Co.,Ltd. Patentee after: MOBI TELECOMMUNICATIONS TECHNOLOGIES (JI'AN) Co.,Ltd. Patentee after: MOBI TECHNOLOGIES (XI'AN) Co.,Ltd. Patentee after: Shenzhen Shengyu Wisdom Network Technology Co.,Ltd. Patentee after: Xi'an Mobi Antenna Technology Engineering Co.,Ltd. Address before: 518057 Guangdong city of Shenzhen province Nanshan District high tech Industrial Park North Long Hill Road Building mobi Patentee before: MOBI ANTENNA TECHNOLOGIES (SHENZHEN) Co.,Ltd. |