CN2561106Y - Adjustable phase shifter of antenna array - Google Patents
Adjustable phase shifter of antenna array Download PDFInfo
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- CN2561106Y CN2561106Y CN 02261870 CN02261870U CN2561106Y CN 2561106 Y CN2561106 Y CN 2561106Y CN 02261870 CN02261870 CN 02261870 CN 02261870 U CN02261870 U CN 02261870U CN 2561106 Y CN2561106 Y CN 2561106Y
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Abstract
The utility model provides a wireless adjustable antenna array phase shifter, which is utilized for adjusting the emission beam direction of an antenna array. The phase shifter comprises a dielectric slice 2, sliding pieces3, a coupling slice 8, and a transmission line plate 4, therein, a micro-strip transmission line is formed by an upper sliding piece 3 and a lower sliding piece 3, a parallel transmission line is formed by an upper sheet metal and a lower sheet metal, and the dielectric slice 2 on the coupling slice 8, and supported and fixed at the outer part of the sliding piece 3 through a dielectric fixture block 6; a gradually changing meander line micro-strip structure is adopted by the transmission line plate 4 and connected with the sheet metal 8, the input radio frequency signal is T0 is disintegrated into at least two ways of output signal by the transmission line plate 4, the power is distributed randomly, one of the two ways is connected with the two ends of the sheet metal in capacity, and respectively transmitted to each radiation element after the phase is shifted, the other way is directly connected with the radiation element. The band range of the utility model is 800 MHz to 3 GHz, the beam-scanning angle with different ranges can be gained by changing the length of the sliding piece 3, and the phase shifter can be utilized for the radiation beam adjusting of multi-element antenna array.
Description
Technical field:
The utility model relates to a kind of antenna element, a kind of specifically adjustable phase shifter.This adjustable phase shifter is specially adapted to beam scanning, and the array antenna that the secondary lobe shape is changed.
Background technology:
As everyone knows, phase shifter is the critical component that changes array antenna beam scanning.All there is defective in various degree in the phase shifter of employed various structures in the existing antenna array.For example to have provided application number be another variable differential phase shifter of 94193994.4 for Fig. 7 (a).This technology is to be made of two orthogonal coaxial lines, wherein the side arm of the outer conductor of coaxial line 21 has a rectangular slit 22 (not drawing among the figure), the inner wire 24 of coaxial line 23 passes from slit 22, is connected with movable sliding sleeve 26 on the inner wire that is enclosed within coaxial line 21.The outer conductor 25 of coaxial line 23 is connected with movable sliding sleeve 26 on the outer conductor that is enclosed within coaxial line 21, is coupled on the coaxial line 23 by the energy of interior outer sliding sleeve with coaxial line 21, also the energy of coaxial line 23 can be coupled on the coaxial line 21.By the position of outer sliding sleeve in changing, can change the transmission path of output signal of the two-port of coaxial line 21, realize changing the purpose of phase place.The shortcoming of this technology is:
(1) when the big amount of phase shift of needs, the aperture slots 22 of coaxial line 21 certainly will be very long, and to reveal electromagnetic energy be very big in the slit of the outer conductor of coaxial line, if adopt the length of the movable sliding sleeve 26 of lengthening, then this length is 2 times of gap length at least;
(2) the scarce outer conductor in 22 places, slit of coaxial line 21 is substituted by sliding sleeve 26, because the internal diameter of sliding sleeve 26 is bigger than the outer conductor internal diameter of coaxial line 21, the characteristic impedance of place place coaxial line 21 of gapping is bigger than the characteristic impedance that does not have the slit to locate, so impedance does not match;
(3) transformer section of this technology be by
Coaxial line 23 constitutes, because
Be and frequency f
0Tightly relevant, when frequency change, the length of coaxial line 23 will no longer be
, therefore, transformer section just can not be realized the function of impedance conversion well, has the narrower deficiency of impedance bandwidth;
(4) because this technology adopts the "T"-shaped branch of coaxial line, coaxial line 23 can't be split up into multichannel again, so when it will give multiple antenna battle array feed, must adopt the mode of a plurality of phase shifter connection in series-parallel cascades, must cause the phenomenon of the insertion loss series connection superposition of a plurality of phase shifters;
(5) owing to the used interior outer sliding sleeve 26,24 of this technology is not isometric, overcoat couple current imbalance in must causing will cause electric current on the outer conductor outer wall of coaxial line 21, cause energy loss.
Can not realize to many radiating elements phase shift feed with a phase shifter that (6) for example, four radiating element phase shift feeds must be made up in three phase shifter connection in series-parallel, shown in Fig. 7 (b), complex structure uses inconvenience.
The content of utility model:
The purpose of this utility model is the deficiency that overcomes above-mentioned prior art, provides a kind of insertion loss low, and phase shift range is big, and the antenna array adjustable phase shifter that impedance matching is good is with the antenna array feed of realizing forming for a plurality of radiating elements simultaneously by a phase shifter.
Realize that the utility model purpose key problem in technology is to have adopted the feeding network that has any distribution power functions concurrently, constitute the multiterminal phase shifter of an end input signal multiterminal output signal.Whole phase shifter comprises slide mechanism, coupling network, matching network three parts, by the path that the control slide mechanism moves continuously, and the phase difference of control output signal component.Wherein, slide mechanism is to constitute an air microstrip transmission line by double layer of metal slide plate 3 up and down; Coupling network supports laterally zygomorphic two sheet metals 8 by medium fixture block 6 and constitutes ribbon feeder, is fixed on the outside of metal slide plate 3; Matching network adopts gradual change meander line structure to form microstrip transmission line plate 4, and is connected with sheet metal 8; Microstrip transmission line plate 4 is with the radiofrequency signal T of input
0Be decomposed into two-way at least, send each radiating element of antenna array respectively to.
Branch's feedback meander line that the main feed meander line 10 that microstrip transmission line plate 4 in the above-mentioned phase shifter, its microstrip line are not waited by a width and many width do not wait constitutes, and the length of each section meander line is half wavelength, to realize good impedance matching.
The microstrip transmission line plate 4 of above-mentioned phase shifter, main feed meander line 10 in its microstrip line is after the process half wavelength, be split up into two transmission lines branches 11 and 12, these two branch lines adopt not wide line to obtain the unequal power distribution at the prong place, with the radiofrequency signal T of input
0Be decomposed into T1 and T2 two-way, wherein one road T1 is coupled to the two ends T3 and the T4 of metal slide plate 3 by coupling piece 8, sends two radiating elements to, and another road T2 directly is connected with coaxial line and sends another radiating element to.T3, the phase place of T4 output signal is with respect to input signal T
0Phase place can change continuously, and the phase place of T2 output signal is with respect to input signal T
0Constant phase difference is arranged, form the three-element antenna array.
Above-mentioned phase shifter is if with the two ends output T3 of metal slide plate 3 and three ports of T2 of T4 and 4 outputs of microstrip transmission line plate, on the radiating element 14 that is connected in twos and connects by coaxial line 15, can form the six-element antenna array respectively.
The utility model since up and down slide plate constitute an air microstrip transmission line, thereby it is little more than the medium slide block to insert loss, phase shift range is big; Because the utility model adopts the structure of little band plate transmission line, an input signal can be decomposed into multichannel output simultaneously,, improve the antenna array gain so can realize being the phase shift of a plurality of radiating element feed and carrying out power division and impedance matching arbitrarily with a phase shifter.Actual measurement shows that frequency band range of the present utility model is 800MHz～3GHz, the phase shift range flexibility and changeability, realize different phase shift ranges by the length that changes slide plate 3, with the beam scanning angle of acquisition different range, and very little to the gain effects of antenna, as shown in Figure 5.Scan 13 processes of spending from 0 degree at wave beam, the gain G of antenna changes less than 0.5dB, has to descend secondary lobe to promote well the effect that last secondary lobe suppresses and tangible " null value " filling effect of secondary lobe down.Have and can reduce blind area area in the honeycomb, improve communication quality, matching performance is good, and the advantage that production cost is low is particularly suitable for industrial production in batches.
Description of drawings: Fig. 1 forms the structure chart of antenna array for the utility model uses two branch's microstrip transmission line plates.Fig. 2 pulls the structure chart of forming antenna array for the utility model uses three branch's microstrip transmission lines.Fig. 3 is used to Fig. 1 to contain the beam scanning antenna array instance graph of six radiating elements for the utility model.Fig. 4 is used to Fig. 2 to contain the beam scanning antenna array instance graph of ten radiating elements for the utility model.Fig. 5 is the actual measurement directional diagram of six-element antenna battle array shown in Figure 3.Fig. 6 is the actual measurement directional diagram of ten yuan of antenna arrays shown in Figure 4.Fig. 7 (a) is the "T"-shaped phase shifter structure figure of background technology.Fig. 7 (b) is the phase shifter connection in series-parallel combination of background technology, the quaternary antenna array schematic diagram of composition.
Embodiment:
Referring to Fig. 1, adjustable phase shifter 1 of the present utility model is mainly by slide plate 3, transmission line plate 4, and coupling piece 8 is formed.Slide plate 3 by up and down two form, two ends are by medium fixture block 7 support fixation, the formation characteristic impedance is Z
0Two parallel lines transmission lines up and down, be fixed with lead-out terminal T3 at following slide plate 3 (or upper slide 3) two ends, T4, in order to Z
0Coaxial line connect.Coupling piece 8 by up and down two form " in " font structure, adopt the thick copper coin of 1mm to make, these two coupling pieces 8 are supported by a pair of medium fixture block 6 with dieelctric sheet 2, and by 9 lockings of medium pin, secured in parallel is in the outside of slide plate 3 up and down, constitutes characteristic impedance to be
The parallel lines transmission line, and the length of side is preferably
Medium pin 9 inserts from medium fixture block 6, and coupling piece 8 and upper and lower medium sheet 2 are fixed together up and down.It is the teflon plate of 0.5mm that dieelctric sheet 2 adopts thickness, between coupling piece 8 and slide plate 3, with the variation of the coupling impedance that reduces in friction between coupling piece 8 and the slide plate 3 and the sliding process to bring because of the minor variations in the gap of coupling sheet 8 and slide plate 3.The external stability of transmission line plate 4 has shielding box 5, is plugged on an end of coupling piece 8 up and down.Transmission line plate 4 adopts microstrip structure, and this microstrip transmission line is made up of not wide tortuous main feeder 10 and the not wide tortuous feeder line 11,12 that divides.Not wide meander line 10 preferably uses the gradual change microstrip line construction, and length is
Main feeder 10 is passed in input signal T0 input again, and by minute feeder line 11,12 output signals, promptly main feeder 10 is in process
Be split up into two transmission lines branches 11,12 after the length, adopt not wide line promptly not wait the input impedance parallel connection at the prong place, obtain unequal power and distribute.Output signal T1 with branch line 12 after the power division passes through coupling piece 8, be coupled to capacitive up and down on the slide plate 3, be connected respectively to two radiating elements by the two ends T3 of metal slide plate 3 and the signal of two phase change of T4 output, another road 11 by coaxial line port T2 directly with link to each other composition three-element antenna array with another radiating element.The length of each section of microstrip transmission line meander line is half wavelength, and the characteristic impedance of output port T1 is
, the characteristic impedance of T2 is Z
0By micro-strip meander-line,, make input port T with impedance conversion
0Characteristic impedance (equaling input impedance) be Z
0, be Z with characteristic impedance again
0Coaxial line connect, realize the matched well of whole phase shifter feeding network.
With reference to Fig. 2, the multiport output phase shifter that the utility model is made up of two slide plates, 3 assembly A, B and microstrip transmission line plate 4.The two ends of microstrip transmission line plate 4 are connected with slide plate 3 assembly A, B respectively, and wherein transmission line plate 4 adopts three not wide tortuous branch lines 11,12,13, constitutes.The radiofrequency signal T of input
0Be decomposed into T1, T5, T2 three tunnel outputs through main feeder 10, wherein T1 and T5 are respectively by A, the phase shift of B metal slider, the signal that is output as T3, T4, T6, T7 four tunnel phase change is delivered to each radiating element respectively, the no phase-changing signal of T2 output directly is connected with another radiating element, forms five yuan of aerial arrays.
Among Fig. 3,14 expression radiating elements, 15 expression coaxial lines, the phase shifter member 1 shown in the schematic diagrammatic sketch 1 in the frame of broken lines, three delivery outlet power of this phase shifter 1 are unequal.With radiating element 14 in twos and connect, three outputs of T2, T3, T4 that are connected respectively to phase shifter member 1 can be formed the antenna array that contains six radiating elements.This connection is the method for practical this phase shifter of use of a kind of comparison " economy ", and under the situation of beam scanning less than 13 degree, this phase shifter can accomplish that substantially antenna gain changes less than 0.5dB.Need not a plurality of cascades, reduced to increase the increase of the insertion loss that brings because of phase shifter serial number purpose.
Among Fig. 4,14 expression radiating elements, 15 expression coaxial lines, the phase shifter member shown in the schematic diagrammatic sketch 2 in the frame of broken lines, five delivery outlet power of this phase shifter are unequal.With radiating element 14 in twos and connect, be connected respectively to five outputs of T2, T3, T4, T6, T7 of phase shifter member, can form the antenna array that contains ten radiating elements.This connection also is the method for practical this phase shifter of use of a kind of comparison " economy ", can accomplish beam scanning 10 degree, and change in gain is less than 0.5dB.
The microstrip structure of above-mentioned transmission line plate 4 also can be made of the meander line 10 that a width does not wait, 10 output is T1, be connected with coupling piece 8, with energy coupling to slide plate 3, with coaxial line with slide plate three two ends delivery outlet T3, T4 links to each other with two radiating elements, to be used for that the less demanding antenna array that gains is carried out phase shift.
Fig. 5 shows, the antenna array that the utility model utilizes the GSM900 antenna for base station to form by Fig. 3, its test frequency is centre frequency 915MHz, scans the process of 13 degree from 0 degree at wave beam, the gain G of antenna changes less than 0.5dB, and have and descend secondary lobe to promote well, the effect that last secondary lobe suppresses, " null value " filling effect of following secondary lobe clearly in addition, this is to reducing blind area area in the honeycomb, improve communication quality, it is very effective reducing inter base station interference, is particularly suitable for the network optimization.
Fig. 6 shows, the antenna array that the utility model utilizes the GSM900 antenna for base station to form by Fig. 4, its test frequency is centre frequency 915MHz, the gain of the antenna array that this structure realizes is very high, reaches more than the 18dBi, and horizontal beam width is 65 degree, scan the process of 10 degree from 0 degree at wave beam, the gain G of antenna changes less than 0.5dB, and has when the part angle and descend secondary lobe to promote well, the effect of last secondary lobe inhibition.
The utility model is not limited to the above-mentioned embodiment that provides, and those skilled in the art can make different distortion under design of the present utility model.
Claims (6)
1. phase shifter for array, comprise slide mechanism, coupling network and matching network are by the mobile continuously path of control slide mechanism, the phase difference of control output signal component is characterized in that slide mechanism is to constitute an air microstrip transmission line by double layer of metal slide plate (3) up and down; Coupling network supports laterally zygomorphic two sheet metals (8) by medium fixture block (6) and constitutes ribbon feeder, is fixed on the outside of metal slide plate (3); Matching network adopts gradual change meander line structure to form microstrip transmission line plate (4), and is connected with sheet metal (8), and microstrip transmission line plate (4) is with the radiofrequency signal T of input
0Be decomposed into output signal T1, the T2 of two-way at least, send each radiating element respectively to and form antenna array.
2. phase shifter according to claim 1, branch's feedback meander line that the main feed meander line (10) that the microstrip line that it is characterized in that transmission line plate (4) is not waited by a width and at least two width do not wait constitutes, the length of each section meander line is half wavelength, to realize power match.
3. phase shifter according to claim 1 and 2, after it is characterized in that main feed meander line (10) the process half wavelength in the microstrip transmission line plate (4), be split up into two transmission lines branch (11) and (12), these two branch lines adopt not wide line to obtain power division at the prong place, with the radiofrequency signal T of input
0Be decomposed into T1 and T2 two-way, one road T1 is coupled to the two ends T3 and the T4 of metal slide plate (3) by coupling piece (8), and output phase is with respect to input signal T
0The signal of Bian Huaing serially, and send two radiating elements respectively to, another road T2 directly is connected with coaxial line, and the signal that output phase is constant is given another radiating element, forms the three-element antenna array.
4, phase shifter according to claim 3, it is characterized in that two ends output T3, the T4 of metal slide plate (3) and three ports of T2 of microstrip transmission line plate (4) output, on the radiating element (14) that is connected in twos and connects by coaxial line (15), form the six-element antenna array respectively.
5. phase shifter according to claim 1 is characterized in that metal slide plate (3) assembly is made as A, B two covers, links to each other with microstrip transmission line plate (4) two ends respectively; Main feed meander line (10) in the microstrip transmission line plate (4) is split up into the tortuous transmission line (11) of three branches, (12), (13), with the radiofrequency signal T of input
0Be decomposed into T1, T2, T5 three tunnel, T1 and T5 are output as the signal of T3, T4, T6, T7 four road phase variables respectively by A, the phase shift of B metal slider, are connected respectively to each radiating element, the signal that the T2 output phase is constant directly is connected with another radiating element, forms five yuan of aerial arrays; If in twos and connect with radiating element (14), be connected with this five tunnel output signal by coaxial line (15) respectively again, can form ten yuan of aerial arrays.
6. phase shifter according to claim 1 is characterized in that coupling piece (8) length of side optimal parameter parallel with slide plate (3) is
, the length of each section of microstrip transmission line meander line is half wavelength, and the characteristic impedance of the transmission line that slide plate (3) constitutes is Z
0, the characteristic impedance of the transmission line that coupling piece (8) constitutes is
, the characteristic impedance of another output port T1, T5 is
,, make input port T by the micro-strip meander-line impedance conversion
0Input impedance to equal its characteristic impedance be Z
0, be Z with characteristic impedance again
0Coaxial line connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02261870 CN2561106Y (en) | 2002-08-07 | 2002-08-07 | Adjustable phase shifter of antenna array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02261870 CN2561106Y (en) | 2002-08-07 | 2002-08-07 | Adjustable phase shifter of antenna array |
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| Publication Number | Publication Date |
|---|---|
| CN2561106Y true CN2561106Y (en) | 2003-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02261870 Expired - Fee Related CN2561106Y (en) | 2002-08-07 | 2002-08-07 | Adjustable phase shifter of antenna array |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012159281A1 (en) * | 2011-06-20 | 2012-11-29 | 华为技术有限公司 | Antenna and antenna control system |
| CN101702463B (en) * | 2009-10-31 | 2013-07-24 | 华南理工大学 | Dielectric-loaded quadrifilar helix antenna of power-division phase-shift feed network |
| CN106602281A (en) * | 2016-12-20 | 2017-04-26 | 北京佰才邦技术有限公司 | Feed network and antenna array |
| CN107331968A (en) * | 2016-04-28 | 2017-11-07 | 罗森伯格技术（昆山）有限公司 | A kind of device and method for controlling aerial signal frequency range to switch |
| CN112424995A (en) * | 2018-08-24 | 2021-02-26 | 三星电子株式会社 | Antenna device for beam steering and focusing |
| CN113708091A (en) * | 2021-08-30 | 2021-11-26 | 中信科移动通信技术股份有限公司 | Beam width adjustable antenna |
-
2002
- 2002-08-07 CN CN 02261870 patent/CN2561106Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702463B (en) * | 2009-10-31 | 2013-07-24 | 华南理工大学 | Dielectric-loaded quadrifilar helix antenna of power-division phase-shift feed network |
| WO2012159281A1 (en) * | 2011-06-20 | 2012-11-29 | 华为技术有限公司 | Antenna and antenna control system |
| CN103053071A (en) * | 2011-06-20 | 2013-04-17 | 华为技术有限公司 | Antenna and antenna control system |
| CN103053071B (en) * | 2011-06-20 | 2016-01-20 | 华为技术有限公司 | Antenna and antenna control system |
| CN107331968A (en) * | 2016-04-28 | 2017-11-07 | 罗森伯格技术（昆山）有限公司 | A kind of device and method for controlling aerial signal frequency range to switch |
| CN107331968B (en) * | 2016-04-28 | 2024-01-26 | 普罗斯通信技术（苏州）有限公司 | Device and method for controlling switching of antenna signal frequency bands |
| CN106602281A (en) * | 2016-12-20 | 2017-04-26 | 北京佰才邦技术有限公司 | Feed network and antenna array |
| CN112424995A (en) * | 2018-08-24 | 2021-02-26 | 三星电子株式会社 | Antenna device for beam steering and focusing |
| CN113708091A (en) * | 2021-08-30 | 2021-11-26 | 中信科移动通信技术股份有限公司 | Beam width adjustable antenna |
| CN113708091B (en) * | 2021-08-30 | 2023-10-31 | 中信科移动通信技术股份有限公司 | Beam width adjustable 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 |