CN113193313A - Phase shifter and antenna system - Google Patents
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- CN113193313A CN113193313A CN202110590331.5A CN202110590331A CN113193313A CN 113193313 A CN113193313 A CN 113193313A CN 202110590331 A CN202110590331 A CN 202110590331A CN 113193313 A CN113193313 A CN 113193313A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/32—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by mechanical means
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Abstract
The invention provides a phase shifter and an antenna system, which relate to the technical field of communication, and the phase shifter comprises: the feeder comprises a dielectric substrate and a feeder network arranged on the dielectric substrate; the feeder network comprises a phase shifting network and a mobile network; the mobile network comprises a phase shift picture and a transmission mechanism for transmitting the phase shift picture; the phase shifting piece and the phase shifting network are separated by a preset coupling gap in the vertical direction, and the phase shifting piece is driven by the transmission mechanism to move according to a preset path so as to change the coupling distance with the phase shifting network and switch the working state of the phase shifter, wherein the working state comprises a phase shifting state and a fracture state. According to the phase shifter and the antenna system provided by the invention, the working state of the phase shifter can be switched by moving the phase shifter sheet without introducing other structures, so that the size of the phase shifter can be reduced, the antenna layout is facilitated, and the power consumption reduction requirement of the electrically-tuned antenna is met.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a phase shifter and an antenna system.
Background
The 5G (5th-Generation, fifth Generation mobile communication technology) network construction is well-behaved, and the application requirements of 5G antenna products are also rapidly iterating. The 5G electrically-tuned antenna reduces the number of ports relative to a conventional 5G antenna, and reduces the research and development cost to a certain extent. However, the power consumption of the 5G electrically tunable antenna is still too large in practical application, and then, the requirement of the electrically tunable antenna based on power consumption reduction comes along, wherein the phase shifter becomes a key core module in the 5G electrically tunable antenna in order to increase the 5G requirement.
Generally, a phase shifter is used to change the downtilt angle of an antenna, thereby facilitating optimization of network coverage. At present, the commonly used phase shifter changes the phase through changing the medium length that covers on the transmission line, when implementing the use, often needs a plurality of phase shifters of overall arrangement, just can satisfy the operation requirement, leads to whole antenna system volume great, not only is not applicable to 5G antenna overall arrangement, also is difficult to satisfy 5G electricity accent antenna's the requirement of reducing power consumption.
Disclosure of Invention
It is therefore an object of the present invention to provide a phase shifter and an antenna system to alleviate the above-mentioned problems.
In a first aspect, an embodiment of the present invention provides a phase shifter, including: the feeder comprises a dielectric substrate and a feeder network arranged on the dielectric substrate; the feeder network comprises a phase shifting network and a mobile network; the mobile network comprises a phase shift picture and a transmission mechanism for transmitting the phase shift picture; the phase shifting piece and the phase shifting network are separated by a preset coupling gap in the vertical direction, the phase shifting piece is driven by the transmission mechanism to move according to a preset path, and the coupling distance between the phase shifting piece and the phase shifting network is changed to switch the working state of the phase shifter, wherein the working state comprises a phase shifting state and a breaking state.
Preferably, in a possible implementation, the mobile network further includes a switching network; the switch network and the phase shifting network are separated by a preset coupling gap in the vertical direction; the switch network is driven by the transmission mechanism to move so as to adjust the impedance of the phase shifter.
Preferably, in a possible implementation, the phase shifting network is provided with a main feeder line and a branch feeder line, wherein the branch feeder line is used for being connected with the antenna radiation unit and comprises a first branch feeder line and a second branch feeder line; the first branch feeder is connected with the main feeder, and the second branch feeder is arranged separately from the main feeder and the first branch feeder.
Preferably, in a possible implementation, one end of the main feed line is provided with a phase-shifting main port, and the other end of the main feed line is connected with the first branch feed line; the first feeder line is provided with a non-phase-shifting tap, the second feeder line is provided with a phase-shifting tap, and the phase-shifting tap and the non-phase-shifting tap are both used for being connected with the antenna radiation unit.
Preferably, in a possible implementation, an end of the first branch line away from the non-phase-shift port is arranged in parallel with an end of the second branch line away from the phase-shift port; the phase shift picture is used for generating coupling at one end of the parallel arrangement of the first branch feeder line and the second branch feeder line.
Preferably, in a possible embodiment, the phase shift photo comprises a first dielectric plate and a U-shaped circuit disposed on the first dielectric plate; one end of the U-shaped line corresponds to the first feeder line, and the other end of the U-shaped line corresponds to the second feeder line.
Preferably, in a possible embodiment, the transmission mechanism comprises a first transmission unit for transmitting the picture-shift sheet, and a second transmission unit for transmitting the switch network; the photo-shift sheet is driven by the first transmission unit to move on the medium substrate according to a preset path; the switch network is driven by the second transmission unit to move on the medium substrate according to a preset path.
Preferably, in a possible implementation, the phase shifting network further includes an isolation network corresponding to the first feeder line; the isolation network is arranged at one end, far away from the non-phase-shifting port, of the first branch feeder line, and is away from the first branch feeder line by a preset distance.
Preferably, in a possible implementation, the phase shifter further includes a protection line connected to the main feed line; the protection circuit is used for carrying out ground protection on the phase shifter.
In a second aspect, an embodiment of the present invention further provides an antenna system, where the antenna system includes a plurality of antenna radiation units, and further includes the phase shifter in the first aspect; the antenna radiation unit is connected with the phase shifter.
The embodiment of the invention has the following beneficial effects:
the phase shifter and the antenna system provided by the embodiment of the invention comprise a dielectric substrate and a feeder network arranged on the dielectric substrate; the feeder network comprises a phase shifting network and a mobile network; the mobile network comprises a phase shift picture and a transmission mechanism for transmitting the phase shift picture; specifically, the phase shift film and the phase shift network are separated by a preset coupling gap in the vertical direction, and the phase shift film can be driven by the transmission mechanism to move according to a preset path, so as to change the coupling gap between the phase shift film and the phase shift network and switch the working state of the phase shifter, the working state of the phase shifter comprises a phase shifting state and a breaking state, when the phase shifting picture moves, the phase shifter can be switched between the two states, so that the connected antenna radiation units can present different states of all participating in radiation or part participating in radiation, thereby further meeting the application requirements of the antenna in different scenes, due to the fact that the working state can be switched only through the movement of the phase shifting picture without introducing other structures, the volume of the phase shifter is reduced, the antenna layout is facilitated, and the power consumption reduction requirement of the electrically-adjusted antenna is met.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a phase shifter according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another phase shifter according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a broken state structure of a phase shifter according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a phase shifter according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a large tilt angle structure of a phase shifter according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a layout structure of a radiating element of an antenna system according to an embodiment of the present invention;
FIG. 7 is a Smith chart simulation result of a phase shifter according to an embodiment of the invention;
FIG. 8 is a Smith chart simulation result of another phase shifter according to an embodiment of the invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, 5G electrically tunable antenna has too big problem of consumption in practical application more, therefore, the requirement of the electrically tunable antenna based on reducing the power consumption comes along with, and the phase shifter therein becomes the key core module in the 5G electrically tunable antenna under the increase of 5G requirement. However, the existing phase shifter has a relatively complex structure, is inconvenient for array arrangement, and is difficult to ensure the overall stability. Therefore, the phase shifter and the antenna system provided by the embodiment of the invention can effectively alleviate the problems.
For the convenience of understanding the present embodiment, a detailed description will be given of a phase shifter disclosed in the present embodiment.
In one possible implementation, an embodiment of the present invention provides a phase shifter, and in particular, a schematic structural diagram of a phase shifter shown in fig. 1, where the phase shifter includes: a dielectric substrate 110, and a feeder network disposed on the dielectric substrate.
Specifically, the feeder network in the embodiment of the present invention includes a phase shifting network 100 and a mobile network 200; wherein the mobile network comprises a picture-shift 201 and a transmission mechanism (not shown in fig. 1) for transmitting the picture-shift.
In specific implementation, the phase shift film 201 and the phase shift network 100 are separated by a preset coupling gap in the vertical direction, and the phase shift film is driven by the transmission mechanism to move according to a preset path, so as to change the coupling distance between the phase shift film and the phase shift network, and switch the working state of the phase shifter, wherein the working state of the phase shifter includes a phase shift state and a fracture state.
For convenience of understanding, fig. 1 only shows a schematic diagram of a top view of the phase shifter, and based on the schematic diagram shown in fig. 1, the phase shifting network is attached to the dielectric substrate, the phase shifting network and the moving network are separately disposed, and a predetermined path of the phase-shifted picture is in a left-right direction on the dielectric substrate, that is, a dotted line portion shown in fig. 1, so that the phase-shifted picture can move left and right on the dielectric substrate under the driving of the transmission mechanism, and assuming that a plane where the dielectric substrate is located is an XY plane, a predetermined coupling gap is formed between the phase-shifted picture and the phase shifting network in a vertical direction, that is, the phase-shifted picture and the phase-shifting network have a certain coupling gap in a Z-axis direction, so that the phase-shifted picture can slide left and right on the XY plane to form the phase shifter.
Furthermore, when the phase shift film is driven by the transmission mechanism to move left and right on the medium substrate, the overlapping part of the phase shift film and the phase shift network is coupled within the range of the phase shift stroke, at the moment, the working state of the phase shifter is in a phase shift state, the length of the overlapping part of the phase shift film and the phase shift network is different along with the difference of the moving distance of the phase shift film, namely, the coupling distance is different along with the difference of the coupling distance, the coupling distance is changed along with the movement of the phase shift film, the adjustment of the phase shift state can be realized, and when the phase shift film is moved to be separated from the phase shift network, a fracture state is formed, so the change of the working state of the phase shifter can be realized through the movement of the phase shift film.
In practical use, the phase shift network may be connected to the corresponding antenna radiation unit, and the movement of the phase shift film may enable the connected antenna radiation unit to participate in radiation entirely or partially, for example, in a phase shift state, the antenna radiation unit participates in radiation entirely, and in a fracture state, the antenna radiation unit participates in radiation partially, and so on, which may meet the radiation requirement of the antenna system.
Therefore, the phase shifter provided by the embodiment of the invention comprises a dielectric substrate and a feeder network arranged on the dielectric substrate; the feeder network comprises a phase shifting network and a mobile network; the mobile network comprises a phase shift picture and a transmission mechanism for transmitting the phase shift picture; specifically, the phase shift film and the phase shift network are separated by a preset coupling gap in the vertical direction, and the phase shift film can be driven by the transmission mechanism to move according to a preset path, so as to change the coupling gap between the phase shift film and the phase shift network and switch the working state of the phase shifter, the working state of the phase shifter comprises a phase shifting state and a breaking state, when the phase shifting picture moves, the phase shifter can be switched between the two states, so that the connected antenna radiation units can present different states of all participating in radiation or part participating in radiation, thereby further meeting the application requirements of the antenna in different scenes, due to the fact that the working state can be switched only through the movement of the phase shifting picture without introducing other structures, the volume of the phase shifter is reduced, the antenna layout is facilitated, and the power consumption reduction requirement of the electrically-adjusted antenna is met.
In practical use, the mobile network usually includes a switch network in addition to the photo frame; the switch network and the phase-shifting network are also separated by a preset coupling gap in the vertical direction; and the switch network can be driven by the transmission mechanism to move so as to adjust the impedance of the phase shifter. Specifically, for ease of understanding, fig. 2 shows a schematic structure of another phase shifter based on fig. 1, and a schematic top view of the phase shifter is also taken as an example for explanation, and the phase shifter further includes a switch network 202 in addition to the structures shown in fig. 1.
Specifically, in the embodiment of the present invention, the preset path of the switch network is also configured to move in the left-right direction on the dielectric substrate, that is, the switch network and the phase shift network have a certain coupling gap in the Z-axis direction with respect to the XY plane on which the dielectric substrate is located, so as to be slidable for adjusting the impedance.
In actual use, the switch network may move synchronously with the phase shift film or asynchronously with the phase shift film, the switch network may be usually pressed on a main path of the phase shift network, and the switch network may be set in the form of a whole line (e.g., an ultra-low impedance line), a multi-line (e.g., a plurality of groups of higher impedance lines at a certain interval), or a non-rectangular line (e.g., an L-shaped line), and the specific line form of the switch network may be set according to actual use conditions, which is not limited in the embodiment of the present invention.
In practical use, the phase shift network is usually connected to an antenna radiation unit of an antenna system, and the antenna radiation units are usually multiple and arranged in an array form to realize phase adjustment through the phase shifter; the first branch feeder is connected with the main feeder, and the second branch feeder is arranged separately from the main feeder and the first branch feeder.
For easy understanding, fig. 3 shows a schematic structural diagram of another phase shifter, specifically, fig. 3 shows a schematic structural diagram of a fracture state of the phase shifter, which includes a main feed line 101, a first branch feed line 102 and a second branch feed line 103, specifically, one end of the main feed line is provided with a phase shift main port 104, and the other end of the main feed line is connected to the first branch feed line; the first feeder line 102 is provided with a non-phase shifting tap 105 and the second feeder line 103 is provided with a phase shifting tap 106, wherein both the phase shifting tap and the non-phase shifting tap are adapted to be connected to the antenna radiating element.
Further, in fig. 3, one end of the first branch feeder line 102 away from the non-phase-shift tap is arranged in parallel with one end of the second branch feeder line 103 away from the phase-shift tap; the phase shift film is used for coupling at one end where the first branch feeder line and the second branch feeder line are arranged in parallel, that is, in fig. 3, the right sides of the main feeder line 101, the first branch feeder line 102 and the second branch feeder line 103 are parallel.
In practical use, in order to facilitate the movable setting of the photo frame and the switch network, the photo frame and the switch network are usually arranged on a corresponding dielectric plate, and the movable setting of the photo frame and the switch network is realized through the matching of the dielectric plate and the transmission mechanism. Therefore, generally, the phase shift photo comprises a first dielectric plate and a U-shaped circuit arranged on the first dielectric plate; one end of the U-shaped line corresponds to the first feeder line, and the other end of the U-shaped line corresponds to the second feeder line.
Specifically, as shown in fig. 3, the first dielectric plate 203 including a phase shift sheet and the U-shaped line 204, the U-shaped line 204 has an opening side facing the phase shift network, that is, one end corresponds to the first branch line, and the other end corresponds to the second branch line.
Further, fig. 3 also shows a switch network, specifically, as shown in fig. 3, in the embodiment of the present invention, a network line 206 of the switch network and a second dielectric board 205 where the network line 206 is located are shown, and the transmission mechanism includes a first transmission unit for transmitting the phase shift film and a second transmission unit for transmitting the switch network, corresponding to the phase shift film and the switch network, wherein, since fig. 3 shows a top view of the phase shifter, the first transmission unit and the second transmission unit are not shown in fig. 3.
Specifically, the photo frame moves on the medium substrate according to a preset path under the driving of the first transmission unit; the switch network is driven by the second transmission unit, the medium substrate moves according to a preset path, when in actual use, the first medium plate of the photo-shift sheet is fixedly connected with the first transmission unit, the second medium plate of the switch network is fixedly connected with the second transmission unit, and the first transmission unit and the second transmission unit can be arranged in a form that a slide rail is matched with a slide groove, for example, the first medium plate and the second medium plate are provided with corresponding slide rails, the medium substrate is provided with matched slide grooves and the like, and the photo-shift sheet and the switch network can move on the medium substrate by matching with the corresponding transmission devices, and when in movement, the photo-shift sheet and the switch network can move synchronously or asynchronously, such as movement at a certain multiple speed and the like, a specific transmission mechanism and a relative movement mode of the photo-shift sheet and the switch network can be set according to actual use conditions, the embodiments of the present invention are not limited in this regard.
Further, as shown in fig. 3, the phase shift network further includes an isolation network 107 corresponding to the first feeder line; the isolation network 107 is disposed at an end of the first feeder line away from the non-phase-shifting tap, and is a predetermined distance away from the first feeder line. As shown in fig. 3, the isolation network 107 generally refers to a line isolated from the first feeder line, and may be balanced when the switching network is laminated with the phase shifting network.
In addition, as shown in fig. 3, the phase shifter of the embodiment of the present invention further includes a protection line 108 connected to the main feeder line 101; the protection circuit is used for performing ground protection on the phase shifter. In particular, the protection line is typically a dc-grounded lightning protection line to increase the stability of the entire phase shifter.
Further, based on the phase shifter shown in fig. 3, in order to facilitate understanding of the process of switching the operating state of the phase shifter, fig. 4 and 5 show schematic diagrams of phase shifters, respectively, and in particular fig. 4 and 5 show corresponding schematic diagrams when the phase-shift picture and the switching network are moved to different positions, wherein fig. 4 shows a schematic diagram of a small angle of the phase shifter, namely, the schematic diagram of the small-inclination structure of the phase shifter, at this time, the coupling distance between the phase-shift picture and the phase-shift network is longer, the physical length of the phase-shift tap 106 is short, i.e., a small relative phase difference with respect to the non-phase-shifted tap 105, fig. 5 shows a schematic diagram of a large angle of the phase shifter, namely, the schematic diagram of the large tilt angle structure of the phase shifter, at this time, the coupling distance between the phase shift film and the phase shift network is short, and the physical length of the phase shift tap 106 is long, i.e. the relative phase difference with the non-phase shift tap 105 is large.
Specifically, as shown in fig. 4, which only shows the reference numerals of the partial structure in fig. 3, it includes a switch network 202, a phase shift picture 201, a phase shift main port 104, a non-phase shift port 105, a phase shift port 106, and also includes a main feed line 101 of the phase shifter, a first feed line 102 where the non-phase shift port 105 is located, and a second feed line 103 where the phase shift port 106 is located, one end (right end shown in fig. 4) of the first feed line 102 and the second feed line 103 is arranged in parallel with one side of the main path of the main feed line, and the isolation network 107 is spaced from the first feed line 102, which can keep the pressing balance; in addition, fig. 4 further includes a protection line 108 and a dielectric substrate 110, and the protection line 108 is a direct current grounding lightning protection line.
In a specific implementation, taking the example that the switch network 202 and the phase shift film 201 move synchronously in fig. 4 as an example, the switch network 202 and the phase shift film 201 can move left and right under the driving of the transmission mechanism, and when the switch network 202 and the phase shift film 201 move to a position close to the main feeder line, i.e. a position close to the left in fig. 4, a small angle of the phase shifter in fig. 4 can be formed.
Further, when the switch network 202 and the phase shift sheet 201 are moved away from the main feeder line by the driving mechanism, i.e. moved to the right in fig. 4, a situation of a large angle of the phase shifter, i.e. a schematic diagram of a large angle of the phase shifter in fig. 5, can be formed. That is, the switching network 202 and phase shifting picture 201 of the mobile network are relatively distant from the entire phase shifting network. In fig. 5, reference numerals of a part of the structure in fig. 3 are also shown, and include a first dielectric plate 203 and a U-shaped line 204, and a switch network 202 and a second dielectric plate 205 where the switch network is located.
The working states of the phase shifters shown in fig. 4 and fig. 5 are phase shifting states, that is, the switching network 202 and the phase shifting picture 201 are coupled to the phase shifting network. On the basis of fig. 5, when the switch network 202 and the phase shift film 201 are driven by the transmission mechanism to move away from the main feeder, i.e. move to the right in fig. 5, the switch network 202 and the phase shift film 201 can be moved away from the phase shift network, even if the phase shifter is switched to the broken state.
Specifically, the broken state corresponds to the situation shown in fig. 3, at this time, the switch network 202 and the phase shift sheet 201 slide out synchronously, the first branch feeder line 102 and the second branch feeder line 103 cannot be electrically connected through the U-shaped line of the phase shift sheet, and at this time, since the second branch feeder line is separately arranged from the main feeder line and the first branch feeder line, the phase shift tap of the second branch feeder line does not work any more in the broken state. And, the U-shaped line is located in the space between the first feeder line 102 and the isolation network 107, and is spaced from the first feeder line 102 by a sufficient safety distance to avoid contact caused by position deviation. And the half-wavelength line on the side of the first branch feeder line 102 parallel to the main feeder line is only used as a parallel open-circuit branch of the non-phase-shifting tap 105 which continues to work, and at this time, the switch network 202 is far away from the main feeder line and is not in coupling connection with the main feeder line, so that the impedance of the main feeder line is changed from low impedance to high impedance, and the impedance matching in a fracture state is realized.
Therefore, the phase shifter provided by the embodiment of the invention is actually a breakable phase shifter with a switch, has a conventional phase shifting function, can switch the breaking function, and is provided with a switch network to adjust the impedance matching of two application scenes. Therefore, the phase shifter provided by the embodiment of the invention can meet two application requirements of all oscillators and part of oscillators of the 5G electrically-tunable antenna for participating in radiation at the same time, and has a good matching effect. In addition, the phase shifter and the switch network can be moved without introducing other structures, so that the phase shifter provided by the embodiment of the invention has the advantages of light structure, relatively small size and convenience for array arrangement, is further suitable for the layout of 5G antennas with numerous ports, has high consistency and can ensure the stability of the whole structure.
Further, on the basis of the above embodiment, an embodiment of the present invention further provides an antenna system, which includes a plurality of antenna radiation units, and further includes the phase shifter described in the above embodiment; the antenna radiation unit is connected with the phase shifter.
For convenience of understanding, fig. 6 shows a schematic structural diagram of an antenna system, specifically, fig. 6 is described by taking a schematic layout diagram of a front radiating element array of a 5G electrically tunable antenna as an example, and the number of the antenna radiating elements of the antenna system shown in fig. 6 is also limited. Specifically, as shown in fig. 6, 601 is a first group of antenna radiation units, 602 is a second group of antenna radiation units, 603 is a third group of antenna radiation units, and 604 is a fourth group of antenna radiation units; each two groups correspond to one phase shifter, and it is assumed that 601 and 604 are antenna radiation elements fed by phase shifting taps of the two groups of phase shifters, and 602 and 603 are antenna radiation elements fed by non-phase shifting taps of the two groups of phase shifters.
Therefore, in the phase-shifting state, 601-604 all participate in radiation, and the normal working mode is adopted; in a fracture state, the second branch feeder is separated from the main feeder and the first branch feeder, at the moment, the phase shift port is disconnected, so that the antenna radiation units fed by the phase shift port do not participate in radiation any more, and only the antenna radiation units included in 602 and 603 are left to continue to radiate, namely, two application requirements that all antenna radiation units of the 5G electric tuning antenna participate in radiation and half of the antenna radiation units participate in radiation are realized in two states.
Further, fig. 7 and fig. 8 are schematic diagrams showing simulation results of a phase shifter, where fig. 7 is a smith chart of a phase shifting state and a fracture state when no switching network is introduced, a solid line corresponds to a large angle, a medium angle and a small angle of the phase shifting state, a dotted line corresponds to the fracture state, and it can be seen that the two are symmetrical about a circle center and difficult to converge synchronously. Fig. 8 is a smith chart showing the phase shift state and the fracture state after the switch network is added, wherein the solid line corresponds to the large, medium and small angles of the phase shift state, and the dotted line corresponds to the fracture state, and the convergence at the center of the circle can be seen, and the matching is good.
It should be understood that the phase shifter and the antenna system provided in the above embodiments are only one possible implementation provided in the embodiments of the present invention, and in other embodiments, different setting situations may also exist, for example, the above switch network is not limited to the form of a whole line (ultra-low impedance line), but also may be in the form of a multi-segment line (multiple groups of higher impedance lines at certain intervals), or a non-rectangular line (L-type line or other lines); the length of one side of the phase-shifting branch feeder is not limited to one half wavelength, and can also be integral multiple of the wavelength; the switch network is not limited to move synchronously along with the phase shifting picture, and can move in a speed multiplying relationship; the fracture state is not limited to only leaving two or three groups of oscillators of the antenna to participate in radiation; in addition, in the antenna system, the phase shift tap is not limited to the first group/the fourth group of the front array of the fed antenna radiation elements; the phase shifter is not limited to a one-to-two U-shaped phase shifter; the phase shifter implementation form is not limited to the microstrip line form attached to the surface of the dielectric slab, and the like, and may be specifically set according to the actual use situation, which is not limited in the embodiment of the present invention.
To sum up, the phase shifter and the antenna system provided by the embodiment of the invention can realize a breakable phase shifter with a switch, the switch network can synchronously move along with the phase shifting sheet within the phase shifting stroke range in the phase shifting state, and the switch network is pressed with the main path of the phase shifting network; in a fracture state, the switch network can slide out along with the phase shifting picture and is in a non-connection and non-coupling state with the phase shifting network, the parallel impedance can be increased due to the separation of the switch network, and good matching after state switching is realized, so that application switching of a power consumption reduction scene of the 5G electrically-tunable antenna can be met.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the antenna system described above may refer to the corresponding process in the foregoing embodiments, and is not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that the following embodiments are merely illustrative of the present invention, and not restrictive, and the scope of the present invention is not limited thereto: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A phase shifter, comprising: the feeder comprises a dielectric substrate and a feeder network arranged on the dielectric substrate;
the feeder network comprises a phase shifting network and a mobile network;
the mobile network comprises a phase shift picture and a transmission mechanism for transmitting the phase shift picture;
the phase shifting piece and the phase shifting network are separated by a preset coupling gap in the vertical direction, the phase shifting piece is driven by the transmission mechanism to move according to a preset path, and the coupling distance between the phase shifting piece and the phase shifting network is changed to switch the working state of the phase shifter, wherein the working state comprises a phase shifting state and a breaking state.
2. The phase shifter of claim 1, wherein the mobile network further comprises a switching network; the switch network and the phase shifting network are separated by a preset coupling gap in the vertical direction;
the switch network is driven by the transmission mechanism to move so as to adjust the impedance of the phase shifter.
3. The phase shifter of claim 2, wherein the phase shifting network is provided with a main feed line and a branch feed line, wherein the branch feed line is configured to be connected to an antenna radiating element, and comprises a first branch feed line and a second branch feed line; the first branch feeder is connected with the main feeder, and the second branch feeder is arranged separately from the main feeder and the first branch feeder.
4. The phase shifter according to claim 3, wherein one end of the main feed line is provided with a phase shifting main port, and the other end of the main feed line is connected to the first branch line;
the first feeder line is provided with a non-phase-shifting tap, the second feeder line is provided with a phase-shifting tap, and the phase-shifting tap and the non-phase-shifting tap are both used for being connected with the antenna radiation unit.
5. The phase shifter according to claim 4, wherein an end of the first feed line remote from the non-phase-shifting tap is disposed in parallel with an end of the second feed line remote from the phase-shifting tap;
the phase shift picture is used for generating coupling at one end of the parallel arrangement of the first branch feeder line and the second branch feeder line.
6. The phase shifter according to any one of claims 3 to 5, wherein the phase shifter sheet comprises a first dielectric plate and a U-shaped circuit disposed on the first dielectric plate;
one end of the U-shaped line corresponds to the first feeder line, and the other end of the U-shaped line corresponds to the second feeder line.
7. The phase shifter according to claim 2, wherein the transmission mechanism includes a first transmission unit for transmitting the phase-shifted sheet, and a second transmission unit for transmitting the switching network;
the photo-shift sheet is driven by the first transmission unit to move on the medium substrate according to a preset path;
the switch network is driven by the second transmission unit to move on the medium substrate according to a preset path.
8. The phase shifter of claim 3, wherein the phase shifting network further comprises an isolation network corresponding to the first shunt line;
the isolation network is arranged at one end, far away from the non-phase-shifting port, of the first branch feeder line, and is away from the first branch feeder line by a preset distance.
9. The phase shifter of claim 3, further comprising a protection line connected to the main feed line; the protection circuit is used for carrying out ground protection on the phase shifter.
10. An antenna system comprising a plurality of antenna radiating elements, and a phase shifter according to any one of claims 1 to 9;
the antenna radiation unit is connected with the phase shifter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110590331.5A CN113193313A (en) | 2021-05-27 | 2021-05-27 | Phase shifter and antenna system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110590331.5A CN113193313A (en) | 2021-05-27 | 2021-05-27 | Phase shifter and antenna system |
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| CN113193313A true CN113193313A (en) | 2021-07-30 |
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| CN202110590331.5A Pending CN113193313A (en) | 2021-05-27 | 2021-05-27 | Phase shifter and antenna system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114122740A (en) * | 2021-11-29 | 2022-03-01 | 江苏亨鑫科技有限公司 | Feeding device for realizing wide and narrow beam switching of MIMO array antenna |
| WO2024088178A1 (en) * | 2022-10-28 | 2024-05-02 | 中信科移动通信技术股份有限公司 | Phase shifter and base station antenna |
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| CN109638391A (en) * | 2018-11-09 | 2019-04-16 | 华南理工大学 | Moving-medium phase shifter and antenna for base station |
| CN215600517U (en) * | 2021-05-27 | 2022-01-21 | 摩比天线技术（深圳）有限公司 | Phase shifter and antenna system |
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| CN101174729A (en) * | 2007-10-24 | 2008-05-07 | 华南理工大学 | Two-side symmetrical arc arm phase shifter of electricity-regulating antenna |
| FR3062524A1 (en) * | 2017-02-01 | 2018-08-03 | Thales | ELEMENTARY ANTENNA WITH A PLANAR RADIANT DEVICE |
| CN109638391A (en) * | 2018-11-09 | 2019-04-16 | 华南理工大学 | Moving-medium phase shifter and antenna for base station |
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