CN106981706B - Spatial stereo phase shifter and phase shifter assembly of base station antenna - Google Patents
Spatial stereo phase shifter and phase shifter assembly of base station antenna Download PDFInfo
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- CN106981706B CN106981706B CN201710291610.5A CN201710291610A CN106981706B CN 106981706 B CN106981706 B CN 106981706B CN 201710291610 A CN201710291610 A CN 201710291610A CN 106981706 B CN106981706 B CN 106981706B
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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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
Abstract
The invention relates to a spatial three-dimensional phase shifter of a base station antenna, which comprises a conductor shell internally provided with an upper layer of conductor cavity and a lower layer of conductor cavity and a feed network component arranged in each layer of conductor cavity, wherein a lower layer feed network arranged in the lower layer of feed network component comprises a first input port and m + n first output ports; the upper layer feed network arranged on the upper layer feed network component comprises m four-port networks and n three-port networks, and each four-port network comprises three second output ports and a second input port connected with one first output port through a transmission line; each three-port network comprises two second output ports and a second input port connected with one first output port through a transmission line, and m and n are positive integers. The upper layer feed network adopts the combination of the three-port network and the four-port network, can meet the requirements of phase shifters with different oscillator numbers, and has the advantages of convenient installation, low cost, high antenna gain and good directivity.
Description
Technical Field
The invention relates to the technical field of communication devices, in particular to a spatial stereo phase shifter of a base station antenna.
Background
At present, the base station electrically-tuned antenna realizes the downtilt adjustment of the beam of the base station antenna through a phase shifter in a beam forming network, and has the advantages of large downtilt adjustable range, high precision, good directional diagram control, strong anti-interference capability, easy control and the like. Therefore, the phase shifter is an essential component of the base station antenna, and the device adjusts the down tilt angle of the antenna beam by changing the relative phase between the antenna units, thereby facilitating the optimization of the communication network.
The beam forming network design of the existing base station antenna uses cables to connect each sub-phase shifter unit, or uses the cables as a part of a power divider, so that the whole feed network contains cables with different lengths, the length of each cable must be ensured to be accurate during processing, workers must weld carefully as required during welding, otherwise, the consistency of an antenna directional diagram cannot be ensured; secondly, the cables are processed, classified and managed according to the lengths of the different cables, the cables are installed in production and are extremely complex, welding spots are extremely numerous, each welding spot is an unstable factor to the whole machine, excessive welding spots greatly increase influence factors of three-order intermodulation of the antenna, repair cost is increased, and production cost is increased; in addition, the cables used by the existing antennas are 141 cables, the loss of the cables is large, especially in a high-frequency band, the gain of the antenna is greatly reduced, so that a longer and larger antenna needs to be designed to improve the gain, and the cost is increased; moreover, when a cable goes wrong, all the results are wrong, the damage probability is high, and the maintenance cost is high.
In summary, it is necessary to design a highly integrated phase shifter without cable, especially for the conventional multi-frequency base station antennas such as 610-.
Disclosure of Invention
In order to solve the technical problems, the invention provides a spatial stereo phase shifter of a base station antenna, which has high reliability, high repeatability, low insertion loss and high gain. The antenna efficiency using such a network will reach over 90%; compared with the traditional antenna, the gain is improved by 1-2 dBi.
In order to realize the technical effect of the invention, the following technical scheme is adopted for realizing the technical effect:
a space three-dimensional phase shifter of a base station antenna comprises a conductor shell internally provided with two layers of conductor cavities and a feed network component arranged in each layer of conductor cavity, wherein the feed network component comprises a sub-phase shifter component for adjusting the beam direction of the base station antenna and an insulating component for supporting the sub-phase shifter component; the space three-dimensional phase shifter also comprises a transmission line which is respectively connected with the sub-phase shifter components arranged in the two adjacent layers of conductor cavities; the sub-phase shifter assembly comprises a feed network connected to the transmission line and a dielectric element assembly slidably connected to the feed network; the two layers of conductor cavities are respectively an upper layer conductor cavity and a lower layer conductor cavity, the feed network arranged in the upper layer conductor cavity is an upper layer feed network, the feed network arranged in the lower layer conductor cavity is a lower layer feed network, and the lower layer feed network comprises a first input port and m + n first output ports; the upper layer feed network comprises m four-port networks and n three-port networks, and each four-port network comprises three second output ports and a second input port connected with one first output port through a transmission line; each three-port network includes two second output ports and one second input port connected to one first output port via a transmission line.
The dielectric element assembly arranged in the conductor cavity of one layer changes the contact area of the dielectric element assembly and the feed network by sliding back and forth relative to the feed network arranged in the conductor cavity.
As a further improvement, the transmission line is arranged in the conductor shell; the feed network is a metal conductor strip line or a printed circuit board provided with a microstrip line,
as a further improvement, each layer of conductor cavity is integrally formed, two ends of each layer of conductor cavity are respectively provided with a cavity opening for moving the feed network component in or out, and the conductor shell is formed by overlapping and combining a plurality of layers of conductor cavities or integrally formed by metal conductor profiles.
As a further improvement, the insulation component is an insulation medium substrate, the insulation medium substrate arranged in each layer of conductor cavity is composed of an insulation medium substrate a and an insulation medium substrate B arranged in the layer of conductor cavity, and the insulation medium substrate a and the insulation medium substrate B arranged in the layer of conductor cavity are respectively arranged above and below the feed network arranged in the layer of conductor cavity.
As a further improvement, the dielectric component arranged in the conductor cavity of one layer is also fixedly connected with a pull rod, the insulation component arranged in the conductor cavity of the layer is fixedly connected with the feed network arranged in the conductor cavity of the layer, and the insulation component arranged in the conductor cavity of the layer is fixedly connected with the conductor shell.
As a further improvement, the feed network arranged in each layer of conductor cavity comprises a metal conductor sheet and a plurality of ports connected with the metal conductor sheet.
As a further improvement, each first output port is connected to one second input port via one transmission line.
As a further improvement, the top of the conductor housing is provided with windows communicated with the upper layer conductor cavity, each window comprises A, m windows B and n windows C, each window B comprises a first window arranged right above each second output port of a four-port network and a second window arranged right above each second input port of the four-port network, and the second window of each window B is also arranged right above a transmission line connected with the second input port of the four-port network and the first output port connected with the transmission line; the window C comprises a first window arranged right above each second output port of the three-port network and a second window arranged right above each second input port of the three-port network, wherein the second window of the window C is also arranged right above a transmission line connected with the second input port of the three-port network and the first output port connected with the transmission line; the conductor shell also comprises a conductor partition plate which is arranged in each layer of conductor cavity and is provided with an opening, and the conductor partition plate arranged in each layer of conductor cavity divides the layer of conductor cavity into a left conductor cavity and a right conductor cavity which are mutually communicated; a boss is fixedly arranged on one side of the insulating medium substrate arranged in each layer of conductor cavity, and the boss is clamped in an opening of the conductor partition plate arranged in the conductor cavity; the metal conductor sheet of the feed network arranged in each layer of conductor cavity is arranged in the left conductor cavity, and the port connected with the metal conductor sheet arranged in the conductor cavity penetrates through the left conductor cavity and extends into the right conductor cavity.
As a further improvement, the conductor partition plate comprises an upper conductor partition plate arranged in the upper conductor cavity and a lower conductor partition plate arranged in the lower conductor cavity, the upper conductor partition plate divides the upper conductor cavity into a left upper conductor cavity and a right upper conductor cavity, and the lower conductor partition plate divides the lower conductor cavity into a left lower conductor cavity and a right lower conductor cavity; the top of the right lower layer conductor cavity is provided with a through hole, one end of the transmission line is arranged in the right lower layer conductor cavity, and the other end of the transmission line penetrates through the through hole and extends into the right upper layer conductor cavity.
As a further improvement, the lower conductor partition plate is provided with a first opening and m + n second openings, the upper conductor partition plate is provided with 3m +2n third openings and m + n fourth openings, a first input port penetrates through the first opening from the left lower conductor cavity and extends into the right lower conductor cavity, and each first output port penetrates through one second opening from the left lower conductor cavity and extends into the right lower conductor cavity; each second output port penetrates through a third opening from the upper left conductor cavity and extends into the upper right conductor cavity, and the second input port penetrates through a fourth opening from the upper left conductor cavity and extends into the upper right conductor cavity.
As a further improvement, m is three, and n is two.
As a further improvement, the projections of a first output port and a second input port connected by a transmission line in the horizontal direction are staggered, and the transmission line is connected with the first output port and the second input port respectively.
As a further improvement, the conductor housing further comprises a guide boss fixedly arranged in each layer of the conductor cavity, and the pull rod arranged in the conductor cavity and the dielectric element assembly arranged in the conductor cavity enclose a guide groove matched with the guide boss.
As a further improvement, the number of the guide bosses arranged in each layer of conductor cavity is two, and the pull rod arranged in the conductor cavity is clamped in a groove formed by the two guide bosses and the left side wall, the top wall and the bottom plate of the conductor cavity.
As a further improvement, a strip-shaped window is further formed in the conductor shell, an anchor is further fixedly connected to the pull rod in the conductor cavity, the anchor arranged in the conductor cavity penetrates through the strip-shaped window and can move back and forth along the strip-shaped window, the anchor is arranged in the upper conductor cavity, and the anchor arranged in the upper conductor cavity is connected with the pull rod arranged in the lower conductor cavity through a first connecting portion; or the anchor is arranged in the lower conductor cavity, and the anchor arranged in the lower conductor cavity is connected with the pull rod arranged in the upper conductor cavity through a first connecting part; or the upper and lower conductor cavities are provided with anchors, and the anchors arranged in the upper conductor cavity and the anchors arranged in the lower conductor cavity are connected through a first connecting part.
As a further improvement, the dielectric element assembly arranged in each layer of the conductor cavity comprises at least one dielectric element, each dielectric element arranged in the layer of the conductor cavity is respectively and fixedly connected with the pull rod arranged in the layer of the conductor cavity, and each dielectric element is provided with at least two gaps for adjusting the contact area between the feed network arranged in the layer of the conductor cavity and the dielectric element; each dielectric element is integrally formed by injection molding.
As a further improvement, the dielectric constant values of the dielectric element assemblies disposed in each layer of cavities are set so that the phases of the feed networks disposed in each layer of cavities can be changed synchronously when the dielectric element assemblies disposed in each layer of conductor cavities are moved synchronously.
As a further improvement, the dielectric element assembly arranged in each layer of conductor cavity is arranged on the left side of the feed network assembly, and the insulating medium substrate and the dielectric element assembly arranged in each layer of conductor cavity are arranged in the left conductor cavity.
As a further improvement, the insulating medium substrate is made of one or more materials of polypropylene, polyethylene, polytetrafluoroethylene and poly 4-methylpentene-1.
As a further improvement, the insulating dielectric substrate is made of a foamed material.
As a further improvement, the positions of the upper and lower feeding network components can be exchanged.
The invention also provides a spatial stereo phase shifter component, which comprises any one of the two spatial stereo phase shifters which are connected with each other, and the two spatial stereo phase shifters are arranged in a left-right mirror image manner.
As a further improvement, the phase shifter component also comprises second connecting parts which are respectively fixedly connected with the anchors at the upper parts of the two spatial three-dimensional phase shifters.
Compared with the prior art, the invention has the following beneficial effects:
1) the feed network components are placed in each layer of conductor cavity, the feed network components arranged in the adjacent two layers of conductor cavities are connected through the transmission lines to form a space three-dimensional feed network, and the feed network originally positioned on the same layer is divided into two parts and placed in a plurality of identical conductor cavities which are overlapped mutually, so that the width of the whole phase shifter is reduced. When the conductor cavity is two layers, the width of the whole phase shifter is reduced by nearly 50%, the thickness of the phase shifter is increased by only 7mm, and when the spatial stereo phase shifter is used for a base station antenna, because double spaces exist, a cable in a spatial integrated feed network can be used by people, a strip line and the like are used for replacing the cable, and a highly integrated beam forming network without the cable is designed.
2) When the highly integrated metal strip line feed network manufactured as a whole is used in the design of a base station antenna, the oscillator and the phase shifter of the antenna are not connected by the cable, and the internal elements of the phase shifter are not connected by the cable, so that the antenna designed by using the highly integrated metal strip line (or the printed circuit board provided with the microstrip line) feed network has smaller insertion loss and higher gain than the existing antenna using the cable to connect the elements. This design enables us to develop an antenna with the best gain.
3) When the feeding network is applied to a base station antenna, only the main feed line and the input port of the feeding network and the connection port of the oscillator and the feeding network need to be welded, so that the number of welding spots of the antenna using the technology is far smaller than that of the competitor antenna, the probability of intermodulation generation is reduced during production, the intermodulation through rate during production of the antenna is improved, and the consistency of standing waves is good.
4) When the spatial stereo phase shifter is used for a base station antenna, because the components realize modularization, the assembly of the antenna is very simple, and compared with the antenna in the prior art, fewer assembly workers are needed, and compared with the prior art, cables with different lengths do not need to be cut, the accurate length of each cable does not need to be ensured, whether a supervision worker welds the cable at a correct position in production is not needed, and the quality of the welding for checking by QC personnel is reduced.
5) When the feed network is produced in a large scale, the feed network can be manufactured through a metal stamping process, so that the production efficiency is improved, and the production cost is further thoroughly reduced.
6) The traditional adjustable phase shifting device of the array antenna is characterized in that an independent conductor cavity is supported by a support column on the back of a reflecting plate, the phase shifting device is installed in the conductor cavity, and elements of the traditional array antenna are connected through cables. The U-shaped reflecting plate and the phase shifter cavity are integrally formed, the reflecting plate (the surface of the conductor shell) and the phase shifter conductor cavity share one surface, the reflecting plate and the phase shifter conductor cavity are not mutually independent, in the existing design, the reflecting plate and the phase shifter are mutually independent parts, the phase shifter is supported on the reflecting plate, and a transmission mechanism of the phase shifter is also higher than the cavity of the phase shifter, so that the height of the antenna is increased. The phase shifting device and the strip line are directly installed in the conductor cavity, and the transmission mechanism is buried in the reflecting plate (the surface of the conductor shell) and the phase shifter cavity, so that the overall thickness of the antenna can be well reduced.
7) The new design enables us to design antennas with different vertical plane patterns according to the requirements of customers, and only the structure of the metal conductor strip line needs to be changed. For example, the first layer feed network provides the best gain, and the second layer feed network provides low sidelobe suppression and null filling.
8) Because the feed network of the electrically-tuned antenna is very complicated, the antenna design of the existing base station antenna enterprise uses a large number of coaxial cables, so that the welding points of the antenna are too many, and the wiring is very complicated, therefore, a large number of workers are needed in the production process of the base station antenna, and the realization of automation is very difficult. Because the design has the characteristic of high integration, the product designed by the technology can be completely automatically produced in the production process, all welding and assembling are completely realized by the robot, and the production efficiency of the antenna is 5-8 times that of the traditional antenna enterprise, and the consistency of the produced antenna is greatly improved and the reject ratio is reduced due to the characteristic of high integration. The phase shifter has simple structure and easy installation and maintenance, and can obviously improve the production efficiency.
9) The lower layer feed network comprises a first input port and five first output ports; the upper layer feed network comprises three four-port networks and two three-port networks, and each four-port network comprises three second output ports and a second input port connected with one first output port through a transmission line; each three-port network includes two second output ports and one second input port connected to one first output port via a transmission line. The number of transmission lines for connecting the upper and lower layer feed networks is five, and the whole network forms a one-to-thirteen network, namely an input port and thirteen output ports, after the upper and lower layer feed networks are connected into a whole. Because the transmission line is only five, correspondingly, the number of the windows which are processed on the cavity and used for accommodating the transmission line is also only five, the CNC processing amount can be reduced, and the processing cost is reduced.
10) Because the top layer strip line adopts the scheme of combining the four-port network and the three-port network, the requirements of phase shifters with different oscillator numbers can be met, the top layer strip line has the advantages of the four-port network, combines the good directivity of the three-port network, and has the advantages of simple structure, less welding spots, simpler manufacturing process, effective cost reduction and antenna gain improvement.
Drawings
FIG. 1-1 is a partial perspective view of a phase shifter;
FIG. 1-2 is an enlarged view of a portion of the structure of FIG. 1-1;
FIG. 2-1 is a partial structure diagram of a spatial phase shifter;
FIG. 2-2 is an enlarged schematic view of a portion of the structure of FIG. 2-1;
FIG. 3-1 is a schematic view of a dielectric element assembly and a tie rod assembly disposed in an upper conductor cavity;
FIG. 3-2 is a schematic view of a dielectric element assembly disposed in an underlying conductor cavity;
FIG. 4-1 is a schematic diagram of a feed network assembly;
FIG. 4-2 is an enlarged view of a portion of the structure of FIG. 4-1;
FIG. 5-1 is a schematic diagram of a phase shifter assembly according to the present invention;
fig. 5-2 is an enlarged view of a portion of the structure of fig. 5-1.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
As shown in the figure, the spatial solid phase shifter of the base station antenna comprises a conductor shell 100 in which two layers of conductor cavities are arranged and a feed network component arranged in each layer of conductor cavity, wherein the feed network component comprises a sub-phase shifter component for adjusting the beam direction of the base station antenna and an insulating component for supporting the sub-phase shifter component; the space three-dimensional phase shifter also comprises a transmission line which is respectively connected with the sub-phase shifter components arranged in the two adjacent layers of conductor cavities; the sub phase shifter assembly comprises a feed network connected with the sub phase shifter assembly and a dielectric element assembly connected with the feed network in a sliding mode, and the dielectric element assembly arranged in the conductor cavity of one layer changes the contact area of the dielectric element assembly and the feed network by sliding back and forth relative to the feed network arranged in the conductor cavity; the two layers of conductor cavities are an upper layer conductor cavity 109 and a lower layer conductor cavity 110 respectively, the feed network arranged in the upper layer conductor cavity 109 is an upper layer feed network, the feed network arranged in the lower layer conductor cavity 110 is a lower layer feed network, and the lower layer feed network comprises a first input port 208 and five first output ports 209; the upper layer feed network comprises three four-port networks 420 and two three-port networks 410, each four-port network comprising three second output ports (204,205,207) and one second input port 206 connected to one first output port via transmission line 210; each three-port network comprises two second output ports (201,203) and one second input port 202 connected to one first output port via a transmission line 210.
The feed network components in the two adjacent layers of conductor cavities are connected to form a complete space three-dimensional feed network.
According to the invention, the feed network component is placed in each layer of conductor cavity, and the feed network components arranged in the adjacent two layers of conductor cavities are connected by the transmission line to form a spatial three-dimensional feed network, so that the volume of the feed network is greatly reduced, and the volume of the phase shifter is greatly reduced.
The sub phase shifter component comprises a feed network connected with the transmission line and a dielectric element component connected with the feed network in a sliding mode, and the dielectric element component arranged in the conductor cavity of one layer changes the contact area of the dielectric element component and the feed network by sliding back and forth relative to the feed network arranged in the conductor cavity. When the spatial stereo phase shifter is used for a base station antenna, the contact area between the dielectric element component and the feed network component is changed by sliding the dielectric element component back and forth relative to the feed network arranged in the cavity, so that the beam direction of the base station antenna is adjusted.
Preferably, the feeding network is a metal conductor strip line or a printed circuit board provided with a microstrip line.
Set up like this, can be thorough avoid using the cable, compare in prior art use cable need guarantee that every cable length is accurate, cable management difficulty, with cable mounting to the shifter complicated, reprocess with high costs, the loss is high, problem such as raw materials cost height, this application not only raw materials cost is low, production simple to operate, can reduce the cost of reprocessing moreover, and then thoroughly reduction in production cost.
In addition, the phase shifting mechanism is simple in structure and easy to install, and can remarkably improve the production efficiency.
Preferably, the feed network is arranged in the conductor housing and connected to the feed networks in the adjacent two layers of conductor cavities, so that the feed networks between the adjacent layers and the transmission line form an integral space three-dimensional feed network. The transmission line is not directly contacted with the conductor housing 100, i.e. there is a gap between the transmission line and the conductor housing 100, so as to realize insulation without short circuit. One end of the transmission line can be arranged in one layer of conductor cavity, and the other end of the transmission line penetrates through the layer of conductor cavity and extends into the other layer of conductor cavity adjacent to the layer of conductor cavity. The transmission line is disposed in the conductor housing 100, so as to prevent leakage of electromagnetic waves. More signals can be transmitted to the antenna element.
Preferably, each layer of conductor cavity is integrally formed, two ends of each layer of conductor cavity are provided with cavities for allowing the feeding network components to move in or out, and the conductor housing 100 is formed by overlapping and combining multiple layers of conductor cavities or integrally formed by metal conductor profiles. During installation, various components of the feed network assembly can be assembled, and then the feed network assembly is inserted into the conductor cavity from the cavity opening, so that the installation time is greatly saved. Compared with the prior art, the problem that each cable needs to be welded to the phase shifter, and the number of welding points is large (the number of welding points is hundreds to thousands), so that the installation time is greatly saved.
Meanwhile, when the feed network component is damaged, the feed network component can be maintained only by moving out of the cavity opening, and the maintenance is very convenient.
Preferably, the insulation assembly is an insulation dielectric substrate, the insulation dielectric substrate arranged in each layer of conductor cavity is composed of an insulation dielectric substrate a and an insulation dielectric substrate B arranged in the layer of conductor cavity, and the insulation dielectric substrate a and the insulation dielectric substrate B arranged in the layer of conductor cavity are respectively arranged above and below the feed network arranged in the layer of conductor cavity. Namely, an insulating medium substrate A is arranged on the feed network circuit arranged in the conductor cavity, and an insulating medium substrate B is arranged below the feed network circuit arranged in the conductor cavity.
Preferably, the dielectric element assembly disposed in the conductor cavity of one layer is further fixedly connected with a pull rod 213, the insulating assembly disposed in the conductor cavity of the layer is fixedly connected with the feeding network disposed in the conductor cavity of the layer, and the insulating assembly disposed in the conductor cavity of the layer is fixedly connected with the conductor shell. Pulling the pull rod 213 can move the dielectric element assembly back and forth relative to the feed network, facilitating phase shifting.
Preferably, the feeding network provided in each layer of conductor cavity comprises a metal conductor sheet and a plurality of ports connected with the metal conductor sheet. The metal conductor sheet and the plurality of ports connected to the metal conductor sheet of each feed network component may be integrally formed. The metal conductor stripline may be composed of a metal conductor piece and a plurality of ports connected to the metal conductor piece.
Preferably, each first output port is connected to one second input port via one transmission line.
Preferably, the top of the conductor housing 100 is provided with a window communicated with the upper layer conductor cavity 109, the window includes a window a108, three windows B and two windows C, each window B includes a first window disposed right above each second output port of a four-port network and a second window 106 disposed right above each second input port 206 of the four-port network, wherein the second window of each window B is further disposed right above a transmission line connected to the second input port of the four-port network and the first output port connected to the transmission line; the window C comprises a first window arranged right above each second output port of a three-port network and a second window 102 arranged right above each second input port 202 of the three-port network, wherein the second window of the window C is also arranged right above a transmission line connected with the second input port of the three-port network and the first output port connected with the transmission line; the conductor shell 100 further comprises a conductor partition plate 114 which is arranged in each layer of conductor cavity 100 and is provided with an opening, and the conductor partition plate 114 arranged in each layer of conductor cavity divides the layer of conductor cavity into a left conductor cavity and a right conductor cavity which are communicated with each other; a boss 411 is fixedly arranged on one side of the insulating medium substrate arranged in each layer of conductor cavity, and the boss 411 is clamped in the opening of the conductor partition plate 114 arranged in the layer of conductor cavity; the metal conductor sheet of the feed network arranged in each layer of conductor cavity is arranged in the left conductor cavity, and the port connected with the metal conductor sheet arranged in the conductor cavity penetrates through the left conductor cavity and extends into the right conductor cavity. This facilitates the connection of the antenna element to the respective port via the window, preferably the window provided directly above each port has a larger horizontal projection than the port, which makes it easier to fit the antenna element and the port together. The first window arranged in the four-port network comprises a first window 104, a first window 105 and a first window 107; the first window provided in a three-port network includes a first window 101 and a first window 103.
Preferably, the conductor partition comprises an upper conductor partition arranged in the upper conductor cavity and a lower conductor partition arranged in the lower conductor cavity, the upper conductor partition divides the upper conductor cavity into a left upper conductor cavity 116 and a right upper conductor cavity 113, and the lower conductor partition divides the lower conductor cavity into a left lower conductor cavity 115 and a right lower conductor cavity 112; the top of the right lower layer conductor cavity is provided with a through hole, one end of each transmission line is arranged in the right lower layer conductor cavity, and the other end of each transmission line penetrates through the through hole to extend into the right upper layer conductor cavity.
Preferably, the lower conductor partition is provided with a first opening and five second openings, the upper conductor partition is provided with thirteen third openings and five fourth openings, the first input port 208 extends from the left lower conductor cavity into the right lower conductor cavity 112 through the first opening, and each first output port extends from the left lower conductor cavity 115 into the right lower conductor cavity 112 through one second opening; each second output port extends from upper left conductor cavity 116 through a third opening into upper right conductor cavity 113 and the second input port extends from upper left conductor cavity 116 through a fourth opening into upper right conductor cavity 113.
Preferably, a first output port and a second input port, which are connected by a transmission line, are offset in projection in the horizontal direction, the transmission line being connected, preferably soldered, to the first output port and the second input port, respectively. Namely, the first output line and the second input line which are arranged under one window are staggered through the projection in the horizontal direction, so that the welding is facilitated.
Preferably, the conductor housing 100 further includes a guide protrusion 117 fixedly disposed in each conductor cavity, and the pull rod 213 disposed in the conductor cavity and the dielectric element assembly disposed in the conductor cavity define a guide slot 212 matching with the guide protrusion 117. The guiding boss 117 and the guiding groove 212 are matched, which means that the guiding groove 212 can be just sleeved outside the guiding boss 117, and the pull rod 213 and the dielectric element assembly can slide back and forth along the guiding boss 117 through the guiding groove 212, so as to further pull the pull rod arranged in the cavity, that is, the pull rod 213 arranged in the cavity and the dielectric element arranged in the cavity can move back and forth along the guiding boss 117, and the back and forth movement is easier. Further, the pull rod can only move back and forth along the guide boss 117 without moving left and right, so that the beam direction of the base station antenna can be more accurately adjusted.
Preferably, the number of the guide bosses 117 arranged in each layer of the conductor cavity is two, and the pull rod 213 arranged in the layer of the conductor cavity is clamped in a groove 118 formed by the two guide bosses and the left side wall, the top wall and the bottom plate of the conductor cavity. Further, the pull rod can only move back and forth along the guide boss 117 without moving left and right, so that the beam direction of the base station antenna can be more accurately adjusted.
Preferably, the conductor housing 100 is further provided with a strip window 111, the pull rod 213 disposed in the upper conductor cavity is further fixedly connected with an anchor 211, and the anchor 211 disposed in the upper conductor cavity penetrates through (or penetrates through) the strip window and can move back and forth along the strip window; the anchor arranged in the upper conductor cavity is connected with the pull rod arranged in the lower conductor cavity through a first connecting part.
The force applied to the anchor 211, either forward or backward, causes the anchor 211 to move back and forth along the strip window 111, causing the upper and lower dielectric element assemblies 310 and 320 to move back and forth, thereby changing the contact area of the dielectric element assemblies with the feed network. The tie rod disposed in the lower conductor cavity 110 may also be provided with anchors, the first connecting member being fixedly connected to the anchors disposed in the lower cavity and the anchors disposed in the upper cavity, respectively.
Preferably, the dielectric element assembly disposed in each layer of the conductor cavity includes at least one dielectric element, each dielectric element disposed in the layer of the conductor cavity is respectively and fixedly connected to the pull rod disposed in the layer of the conductor cavity, and each dielectric element is provided with at least two notches for adjusting the contact area between the feed network disposed in the layer of the conductor cavity and the dielectric element; each dielectric member is integrally formed by injection molding. This enables widening of the bandwidth.
Preferably, the dielectric element is fixedly connected with the pull rod in a hot riveting or tight fit mode, and the dielectric element assembly arranged in each layer of conductor cavity comprises a plurality of dielectric elements which are respectively connected with the pull rod arranged in the conductor cavity; the pull rod is a glass fiber reinforced plastic pull rod. The upper dielectric element assembly includes three long dielectric elements 301 and two short dielectric elements 302. Both the dielectric element and the anchor are provided with elongated slots.
Preferably, each feeding network is fixedly connected to the insulating member (which also serves to insulate the feeding network from the conductor cavity), preferably by means of an insulating dielectric rod passing through the insulating member and the feeding network. Fig. 4-1 shows a schematic diagram of a spatial phase shifter structure according to the present application, in which an upper feeding network, a lower feeding network, an upper dielectric element assembly 310, a lower dielectric element assembly 320, and five transmission lines 210 are contained in a conductor housing.
The insulating medium substrates 404 and 403 arranged above and below the upper layer feed network are made of plastic foaming materials, and the upper layer feed network and the insulating medium substrates 404 and 403 are fixedly connected through at least one insulating medium rod (a rod body made of insulating materials) penetrating through the upper layer feed network and the insulating medium substrates 404 and 403. The insulating dielectric substrates 404, 403 may be provided with bosses 411, each boss 411 is provided with a positioning hole 412, each boss 411 is clamped in one opening, the boss 411 is matched with the conductor housing 100 to fix the upper feeding network, a through hole is provided near each port of the upper feeding network, each insulating dielectric rod 405 passes through one positioning hole and one through hole provided under (preferably right under) the positioning hole to position and fix the upper feeding network and the insulating dielectric substrates 404, 403 to each other, and then the insulating dielectric rods 405 are tightly connected with the insulating dielectric substrates 404, the insulating dielectric substrates 403, and the upper feeding network by a thermoplastic riveting process, so as to tightly fix the insulating dielectric substrates 404, the insulating dielectric substrates 403, and the upper feeding network together, that is, three four-port networks 420 and two three-port networks 410 are respectively connected with the insulating dielectric substrates 404, 403, and the upper feeding network, 403 are fixedly connected and the insulating dielectric rod 405 may be a plastic rod.
The lower feed network comprises a six-port feed network, and the six-port feed network 430 and the insulating dielectric substrates 401 and 402 are fixedly connected through at least one insulating dielectric rod passing through the six-port feed network 430 and the insulating dielectric substrates 401 and 402. The insulating dielectric substrate 401 and the insulating dielectric substrate 402 may be provided with bosses 411, each boss 411 is provided with a positioning hole 412, each boss 411 is clamped in an opening of the lower conductor cavity, the boss 411 and the conductor housing 100 are mutually matched to play a role of fixing the lower feed network, a through hole is provided near each port of the lower feed network, each insulating dielectric rod 405 arranged in the lower conductor cavity passes through one positioning hole 412 and one through hole arranged below (preferably right below) the positioning hole 412 to mutually position and fix the six-port feed network 430 and the insulating dielectric substrates 401 and 402 together, and then the insulating dielectric rods 405 are respectively tightly connected with the insulating dielectric substrate 401, the insulating dielectric substrate 402 and the lower feed network through a thermoplastic riveting process, so that the insulating dielectric substrate 401, the insulating dielectric substrate 402 and the lower feed network are tightly fixed together, even though the six-port feed network 430 is fixedly connected to the insulating dielectric substrates 401, 402, the insulating dielectric rod 405 is made of a plastic rod.
The lower dielectric element assembly 320 includes a backing block 304, one long dielectric element 305, and two short dielectric elements 303. The long dielectric element 305 and the feeding network form a bidirectional phase shifter, the short dielectric element 303 and the feeding network form a unidirectional phase shifter, and the support block 304 supports the strip lines, so that the phase shifter assembly disposed in the lower conductor cavity includes four sub-phase shifters. The transmission line is used for connecting the upper and lower layer feed networks, such as: a pin 407 of a transmission line is inserted into a hole 409 of a second input port of the upper layer feed network, and a pin 408 of the transmission line is inserted into a hole 406 of a first output port of the lower layer feed network, that is, a connection between the second input port and the first output port through the transmission line is realized. Similarly, the other four transmission lines are correspondingly connected with the upper layer feed network and the lower layer feed network, so that the second input ports of the five upper layers are connected with the five first output ports of the lower layers to form an integral network. The feed network comprises a main input port, thirteen second output ports, and sub-phase shifter assemblies arranged in the upper conductor cavity comprise eight sub-phase shifters, and sub-phase shifter assemblies arranged in the lower conductor cavity comprise four sub-phase shifters, and the total number of the spatial stereo phase shifters is twelve.
Preferably, the dielectric constant values of the dielectric element assemblies disposed in each layer of cavities are set such that the phase of the feed networks disposed in each layer of cavities can be varied in synchronism when the dielectric element assemblies disposed in each layer of conductor cavities are moved in synchronism. The anchor 211 located in the upper conductor cavity and the anchor 211 located in the lower conductor cavity are connected by a first connecting portion, which may be a rod-shaped member. The dielectric element assembly disposed in the upper conductor cavity and the dielectric element assembly disposed in the lower conductor cavity can be moved synchronously back and forth by applying a back and forth force to the rod-shaped member or the anchor 211. Therefore, synchronous movement of the upper dielectric element component and the lower dielectric element component can be realized only by one transmission device, so that the phases of the sub phase shifter components arranged in each layer of conductor cavity are synchronously changed, and a transmission system is greatly simplified. Thirteen second output terminals may be connected to thirteen antenna elements.
Preferably, each dielectric element in each conductor cavity is made of the same dielectric material and has the same dielectric constant, the dielectric constant of the dielectric element assembly in the upper conductor cavity is between 2.0 and 2.8 (for example, polypropylene or polystyrene-based plastic or polytetrafluoroethylene or TPX (poly 4-methylpentene-1) or PPE), the dielectric element assembly in the lower conductor cavity is made of a material having a dielectric constant between 3.0 and 5.0 (for example, ceramic material, modified PPE material), the dielectric constants of the dielectric element materials in different conductor cavity layers are different, having a difference delta in dielectric constant between them, which, when the dielectric element assemblies provided in the conductor cavities of the respective layers are moved synchronously, the phase of the feed network arranged in each layer of conductor cavity can be synchronously changed, and the transmission system of the electrically-tuned antenna is simplified.
Preferably, the dielectric element assembly arranged in each layer of conductor cavity is arranged on the left side of the feed network assembly, and the insulating dielectric substrate and the dielectric element assembly arranged in each layer of conductor cavity are arranged in the left conductor cavity.
Preferably, one part of the feed network arranged in any one of the conductor cavities extends into the insulating medium substrate, and the other part of the feed network is exposed out of the insulating medium substrate.
Preferably, the dielectric element assembly arranged in each layer of the conductor cavity is arranged on the left side of the feed network, the insulating medium substrate and the dielectric element assembly arranged in each layer of the conductor cavity are arranged in the left conductor cavity, and the pull rod, the dielectric element assembly and the insulating medium substrate arranged in the layer of the conductor cavity are sequentially arranged from left to right on the leftmost side.
Preferably, the insulating dielectric substrate is made of a low dielectric constant, low loss material. The low dielectric constant, low loss material may be, for example, one or more of polypropylene (PP), Polyethylene (PE), Polytetrafluoroethylene (PTFE), TPX (poly 4-methylpentene-1). Thereby improving the gain of the antenna.
Preferably, the insulating dielectric substrate is made of a foamed material. And the adoption of the foaming material is convenient for transportation, and the gain of the antenna can also be improved.
Preferably, each layer of conductor cavity is a cuboid-shaped conductor cavity with cavities arranged at two ends, the port networks are sequentially arranged from front to back, and the pull rod and the guide boss are parallel to the long edge of the cuboid-shaped conductor cavity. Of course, the ports of the feed network arranged in the lower cavity are also arranged from front to back in sequence, and preferably, the first input port is arranged in the middle of each second input port, so that the arrangement of the strip lines of the feed network component is facilitated, and raw materials can be saved. Of course, the first output port and the second input port connected by one transmission line are preferably in close proximity for ease of installation. The pull rod 213 is parallel to the guide boss 117, thereby allowing the dielectric substrate to move back and forth relative to the feed network assembly.
Preferably, the insulating dielectric substrate and the conductor housing are fixedly connected by means of rivets. For example by means of a rivet connection through the insulating dielectric substrate and the conductor housing.
During installation, the feed network components can be installed firstly, then each feed network component is inserted into the cavity from the cavity opening of the cavity layer, each first output port is connected with each second input port through a transmission line, and finally the insulating medium substrate is fixedly connected with the conductor shell 100 through rivets, so that the installation is very convenient, the installation can be completed within 10 minutes, and the production efficiency is greatly improved. Two cavity openings are arranged, so that raw materials are saved.
Or the feed network component can be inserted into the left cavity from the opening of the left cavity of each layer of cavity, then the feed network component is moved rightwards, so that each port penetrates through the opening and extends into the right cavity of the layer of cavity, the boss 411 is clamped in the opening, then the insulating medium substrate is fixedly connected with the conductor shell 100 through a rivet, and finally each first output port is connected with each second input port through a transmission line.
Preferably, the positions of the upper and lower layer feed network components can be exchanged.
In summary, the feed network is divided into an upper layer and a lower layer, the upper layer and the lower layer are combined into a whole through the transmission line, and then a space three-dimensional phase shifter is formed, and the space three-dimensional phase shifter comprises a main input port, thirteen output ports and twelve sub-phase shifters, the upper layer and the lower layer are made of dielectric elements made of materials with different dielectric constants, a transmission system is simplified, and the best phase shifter is designed.
When the phase shifter is used for an antenna, signals are input into each first output port from the first input port, the signals transmitted from each first output port are transmitted to a second input port connected with the transmission line through the transmission line connected with the first output port, then the signals are respectively transmitted to second output ports which belong to the same feed network as the second input port, and then the signals are transmitted to antenna oscillators connected with each second output port.
Example 2
The invention also provides a spatial stereo phase shifter component of the base station antenna, which comprises two spatial stereo phase shifter components which are connected with each other in the embodiment 1, and the two phase shifter components are arranged in a left-right mirror image manner. The phase shifter is composed of a left space stereo phase shifter 528 and a right space stereo phase shifter 529 arranged on the right side of the left space stereo phase shifter, and the left space stereo phase shifter 528 and the right space stereo phase shifter 529 are flush with each other in front, back, up and down.
Preferably, the conductor housings of the two spatial phase shifters are integrally formed and connected to form the outer shell 527 of the phase shifter assembly.
Preferably, the phase shifter assembly further includes second connection parts 530 fixedly connected to the anchors at the upper portions of the two spatial phase shifters, respectively. The second connecting portion 530 may be disposed on the conductor casing 527, and the second connecting portion 530 is a dragging plate or a dragging rod. The housing 527 may be provided with a guide groove 533, the second connection portion 530 may be provided with a guide protrusion matching with the guide groove 533, the guide protrusion is disposed in the guide groove 533, and when a forward or backward force is applied to the second connection portion 530, the second connection portion 530 can move back and forth along the guide groove 533, and of course, the guide groove, the pull rod, and the guide protrusion are preferably disposed in parallel. The pull rod is preferably parallel to the elongated slots of the dielectric elements of the dielectric element assembly to facilitate pulling.
Fig. 5 shows a schematic structural diagram of the phase shifter of the present application, which includes an integrally formed conductor housing 527, and 8 conductor cavities 501, 502, 504, 505, 507, 508, 509, and 510 are arranged in the conductor housing 527, wherein the conductor cavities 501 and 510 arranged on the left side form a pair, the conductor cavity 501 and the conductor cavity 502 together form a lower conductor cavity of the left spatial three-dimensional phase shifter, and the conductor cavity 510 and the conductor cavity 509 together form an upper conductor cavity of the left spatial three-dimensional phase shifter; the conductor cavity 504 and the conductor cavity 505 jointly form a lower conductor cavity of the right spatial stereo phase shifter, and the conductor cavity 508 and the conductor cavity 507 jointly form an upper conductor cavity of the right spatial stereo phase shifter; the feed network placed in the left spatial phase shifter and the feed network placed in the right spatial phase shifter are separated by the longitudinal metal wall 503, the design effectively improves the isolation degree of the system, and the upper layer feed network component and the lower layer feed network component are separated by the transverse metal wall 506. The small windows 517,519,523 are three windows arranged right above one four-port network of the left spatial stereo phase shifter, and the window 518,520,524 is three windows arranged right above one four-port network of the right spatial stereo phase shifter; the small windows 511,515 are two windows disposed right above one three-port network of the left spatial phase shifter, the window 512,516 is two windows disposed right above one three-port network of the right spatial phase shifter, and the left and right sides of the phase shifter are respectively provided with thirteen output ports. The insulating dielectric substrate disposed in the upper conductor cavity can be fixed to the case by an explosive rivet inserted through a hole in the fixing hole, and the lower insulating dielectric substrate can be fixed to the metal case 527 in the same manner. The long windows 513 and 514 and the long windows 521 and 522 are respectively second windows of the left space stereo phase shifter and the right space stereo phase shifter, the window 525 and the window 526 are respectively windows a of the left space stereo phase shifter and the right space stereo phase shifter, the main input port is positioned in the middle of the upper part of the shell, the push-pull carriage can slide back and forth along the elongated strip-shaped window 531,532 and the guide groove 533, and then the dielectric element assembly arranged in each conductor cavity is driven to slide back and forth relative to the feed network arranged in the conductor cavity, the contact area of the dielectric element assembly and the feed network is changed, and the beam direction is adjusted.
The metal shell 527 is provided with a round hole, the insulating medium substrate is provided with a fixing hole corresponding to the round hole, and the insulating medium substrate and the conductor shell are fixed together by an explosion rivet penetrating through the round hole and the fixing hole. The round hole can be a plurality of, and the fixing hole corresponding to each round hole also can be a plurality of.
In summary, the phase shifter feed networks are respectively arranged in the two metal conductor cavities, the two feed networks are connected into a whole through the transmission lines, and then the dielectric elements with different dielectric constants are used in the different conductor cavity layers, so that the upper and lower dielectric element assemblies can be dragged to move together by using one set of transmission system, and the transmission system is simplified, otherwise, the upper and lower dielectric elements are respectively driven by using two sets of transmission systems.
Therefore, the phase shifter is expanded to a three-dimensional structure to form a space three-dimensional phase shifter, the width of the original plane phase shifter can be reduced by 50%, and as a result, the phase shifter enables the design of electrically tunable antennas with smaller sizes, the antennas do not use cables, and if the antenna has M radiators, the beam forming network has M-1 sub-phase shifters, so that an antenna directional diagram with high quality can be designed.
And a second output port of the left space stereo phase shifter and a second output port of the right space stereo phase shifter are respectively connected with an antenna oscillator.
The housing and the casing preferably do not have openings except for the openings to prevent electromagnetic waves from leaking. It is also preferable that the transverse metal walls 506 and the longitudinal metal walls 503 are not provided with openings to prevent the leakage of electromagnetic waves.
The phase shifter is suitable for all frequency bands, in particular for the fourth generation mobile base station antenna in 610-960MHz, 1420-2690MHz and 3300-3900MHz multi-frequency base station antenna and the future fifth generation mobile communication antenna.
The conductor can be made of metal aluminum, aluminum alloy and other materials. Plural refers to two or more.
However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited by this, and all the modifications and equivalents of the subject matter described in the claims and the specification should be included in the scope of the present invention. In addition, the abstract and the title are provided to assist the patent document searching and are not intended to limit the scope of the invention.
Claims (9)
1. A space three-dimensional phase shifter of a base station antenna is characterized by comprising a conductor shell internally provided with an upper layer of conductor cavity and a lower layer of conductor cavity, and a feed network component arranged in each layer of conductor cavity, wherein a lower layer feed network arranged on the lower layer feed network component comprises a first input port and m + n first output ports; the upper layer feed network arranged on the upper layer feed network component comprises m four-port networks and n three-port networks, and each four-port network comprises three second output ports and a second input port connected with one first output port through a transmission line; each three-port network comprises two second output ports and a second input port connected with one first output port through a transmission line, and m and n are positive integers; the feed network component comprises a sub-phase shifter component used for adjusting the beam direction of the base station antenna and an insulating component used for supporting the sub-phase shifter component, and the sub-phase shifter component comprises a feed network connected with the transmission line and a dielectric element component connected with the feed network in a sliding way; every layer of conductor cavity integrated into one piece, every layer of conductor cavity both ends all are equipped with the accent that is used for letting feed network circuit component move in or shift out, the feed network is the printed circuit board of metal conductor stripline or be equipped with the microstrip line, and the conductor casing comprises multilayer conductor cavity stack combination or by metal conductor section bar integrated into one piece, and every dielectric element that locates in every layer of conductor cavity is same dielectric material, has the same dielectric constant, and the dielectric constant of the dielectric element material in the different conductor cavity layers is different.
2. The spatial phase shifter according to claim 1, wherein the dielectric element assembly disposed in the conductor cavity of one layer is further fixedly connected with a pull rod, the insulation assembly disposed in the conductor cavity of one layer is fixedly connected with the feeding network disposed in the conductor cavity of one layer, and the insulation assembly disposed in the conductor cavity of one layer is fixedly connected with the conductor housing; the insulating assembly is an insulating medium substrate, the insulating medium substrate arranged in each layer of conductor cavity is composed of an insulating medium substrate A and an insulating medium substrate B which are arranged in the layer of conductor cavity, and the insulating medium substrate A and the insulating medium substrate B which are arranged in the layer of conductor cavity are respectively arranged above and below the feed network arranged in the layer of conductor cavity.
3. The spatial phase shifter according to claim 1, wherein the top of the conductor housing is opened with windows communicating with the upper conductor cavity, the windows include A, m windows B and n windows C, each window B includes a first window disposed directly above each second output port of a four-port network and a second window disposed directly above each second input port of the four-port network, wherein the second window of each window B is further disposed directly above a transmission line connected to the second input port of the four-port network and the first output port connected to the transmission line; the window C comprises a first window arranged right above each second output port of the three-port network and a second window arranged right above each second input port of the three-port network, wherein the second window of the window C is also arranged right above a transmission line connected with the second input port of the three-port network and the first output port connected with the transmission line.
4. The spatial phase shifter according to claim 1, wherein the conductor housing further comprises a conductor partition provided with an opening in each of the conductor cavities, the conductor partition comprising an upper conductor partition provided in the upper conductor cavity and a lower conductor partition provided in the lower conductor cavity, the lower conductor partition being provided with one first opening and m + n second openings, the upper conductor partition being provided with 3m +2n third openings and m + n fourth openings.
5. The spatial phase shifter according to claim 4, wherein the conductor partition plate provided in each conductor cavity divides the conductor cavity into a left conductor cavity and a right conductor cavity which are communicated with each other; a bulge is fixedly arranged on one side of the insulating medium substrate arranged in each layer of conductor cavity, and the bulge is clamped in the opening of the conductor partition plate in the layer of conductor cavity; the metal conductor sheet of the feed network arranged in each layer of conductor cavity is arranged in the left conductor cavity, and the port connected with the metal conductor sheet arranged in the conductor cavity penetrates through the left conductor cavity and extends into the right conductor cavity.
6. A spatial phase shifter according to claim 1, 3 or 4 wherein m is three and n is two.
7. A spatial phase shifter according to claim 1 wherein the upper and lower feed network elements are interchangeable.
8. A phase shifter assembly for a base station antenna, characterized in that the phase shifter assembly comprises two spatial phase shifters according to any one of claims 1-7 connected to each other, and the two spatial phase shifters are arranged in a mirror image left and right.
9. The phase shifter assembly of claim 8, wherein the spatial phase shifter is the spatial phase shifter of claim 8, the phase shifter assembly further comprising second connection parts fixedly connected to anchors respectively provided at upper parts of the two spatial phase shifters.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710291610.5A CN106981706B (en) | 2017-04-28 | 2017-04-28 | Spatial stereo phase shifter and phase shifter assembly of base station antenna |
| PCT/CN2018/084071 WO2018196711A1 (en) | 2017-04-28 | 2018-04-23 | Space stereo phase shifter for base station antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710291610.5A CN106981706B (en) | 2017-04-28 | 2017-04-28 | Spatial stereo phase shifter and phase shifter assembly of base station antenna |
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| CN106981706B true CN106981706B (en) | 2022-07-22 |
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| CN106981706B (en) * | 2017-04-28 | 2022-07-22 | 广州司南技术有限公司 | Spatial stereo phase shifter and phase shifter assembly of base station antenna |
| CN107681231B (en) * | 2017-09-18 | 2019-10-01 | 江苏禹高物联科技有限公司 | Two-way phaser mechanism |
| CN111585024B (en) * | 2020-05-20 | 2023-03-31 | 中信科移动通信技术股份有限公司 | Dielectric phase shifter and 5G base station antenna |
| CN112003017B (en) * | 2020-07-31 | 2023-04-14 | 中信科移动通信技术股份有限公司 | Phase-shifting feed device of array antenna and array antenna |
| CN114976535B (en) * | 2022-05-31 | 2023-12-05 | 中信科移动通信技术股份有限公司 | Transmission phase-shifting system and antenna |
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| DE102010036820B4 (en) * | 2010-08-03 | 2015-05-07 | Bundesanstalt für Materialforschung und -Prüfung (BAM) | Antenna radiator together with associated objects |
| CN203910942U (en) * | 2014-01-28 | 2014-10-29 | 京信通信技术(广州)有限公司 | Cavity-type phase shifter |
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| WO2018196711A1 (en) | 2018-11-01 |
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Denomination of invention: A spatial stereo phase shifter and phase shifter component for base station antennas Effective date of registration: 20230808 Granted publication date: 20220722 Pledgee: Bank of China Co.,Ltd. Nansha Branch of Guangdong Free Trade Pilot Area Pledgor: Guangzhou Sinan Technology Co.,Ltd. Registration number: Y2023980051269 |