CN111668578A - Dielectric phase shifter and base station antenna - Google Patents

Dielectric phase shifter and base station antenna Download PDF

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Publication number
CN111668578A
CN111668578A CN202010641650.XA CN202010641650A CN111668578A CN 111668578 A CN111668578 A CN 111668578A CN 202010641650 A CN202010641650 A CN 202010641650A CN 111668578 A CN111668578 A CN 111668578A
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CN
China
Prior art keywords
cavity
dielectric
phase shifter
substrate
moving
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Pending
Application number
CN202010641650.XA
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Chinese (zh)
Inventor
薛富林
丁晋凯
程伟
赵加明
潘利君
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CICT Mobile Communication Technology Co Ltd
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Wuhan Hongxin Telecommunication Technologies Co Ltd
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Publication date
Application filed by Wuhan Hongxin Telecommunication Technologies Co Ltd filed Critical Wuhan Hongxin Telecommunication Technologies Co Ltd
Priority to CN202010641650.XA priority Critical patent/CN111668578A/en
Publication of CN111668578A publication Critical patent/CN111668578A/en
Pending legal-status Critical Current

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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
    • H01P1/184—Strip line phase-shifters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/18—Phase-shifters
    • 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
    • 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
    • H01Q3/34—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 electrical means

Abstract

The invention relates to the technical field of antennas and discloses a dielectric phase shifter and a base station antenna, wherein the dielectric phase shifter comprises a cavity, a phase-shifting PCB and a movable dielectric plate, wherein the phase-shifting PCB and the movable dielectric plate are arranged in the cavity; the movable medium plate comprises a first movable medium plate and a second movable medium plate which are arranged on two sides of the substrate, and the first movable medium plate and the second movable medium plate are in integral sliding connection relative to the substrate along the length direction of the strip line group. The dielectric phase shifter and the base station antenna provided by the invention can reduce the number of cavities, reduce the space required by installation, and are beneficial to reducing grounding pins, reducing the processing difficulty and cost and facilitating installation; and the movable medium plate moves relative to the plurality of strip line groups simultaneously, and the consistency of each port can be improved.

Description

Dielectric phase shifter and base station antenna
Technical Field
The invention relates to the technical field of antennas, in particular to a dielectric phase shifter and a base station antenna.
Background
In the rapid development of 5G mobile communication, a large-scale array antenna has begun to be widely used, but a fixed-tilt 5G antenna has not met the requirements of a complex environment in the future. Compared with a conventional mechanical tilt antenna, the electrically tunable antenna is more suitable for a wider environment and is more convenient to adapt to. Therefore, a phase shifter of a key component in the electrically tunable antenna becomes a key technology of the 5G large-scale array antenna, and the size and the index of the whole antenna are directly influenced by the structural size, the space utilization rate and the processing and installation difficulty of the electrically tunable antenna.
In the application of the large-scale array electrically-tunable antenna, a phase shifter is required to be connected in each path of signal to realize the control of the phase, so that a large amount of phase shifters are required to be used to realize the phase control function. The existing mode not only occupies a large space of PCB feed network layout, increases the difficulty of antenna design, but also causes the problem of poor phase consistency of each path of signal. And the use of a large number of phase shifters makes ground pins numerous, which causes the problems of complex processing, high cost, inconvenient installation and welding, low mass production efficiency and the like. And are difficult to electrically debug in narrow closed cavities.
Disclosure of Invention
The embodiment of the invention provides a dielectric phase shifter and a base station antenna, which are used for solving or partially solving the problems that a large number of phase shifters in the conventional antenna occupy a large space of a PCB feed network layout, the design difficulty of the antenna is increased, and the phase consistency of each path of signal is poor.
The embodiment of the invention provides a dielectric phase shifter, which comprises a cavity, a phase-shifting PCB (printed circuit board) and a movable dielectric plate, wherein the phase-shifting PCB and the movable dielectric plate are arranged in the cavity; the movable dielectric plate comprises a first movable dielectric plate and a second movable dielectric plate which are arranged on two sides of the substrate, the first movable dielectric plate and the second movable dielectric plate are in integral sliding connection with the substrate along the length direction of the strip line group, the cavity is in an open shape along the first side in the length direction of the strip line group, and the movable dielectric plate extends out of the first side of the cavity.
On the basis of the scheme, a plurality of first sliding grooves penetrating through the substrate are arranged on the substrate at intervals, the first sliding grooves are arranged along the length direction of the strip line group, first bosses are arranged between the first movable medium plate and the second movable medium plate and correspond to the first sliding grooves, the first bosses penetrate through the first sliding grooves, and the first movable medium plate is connected with the second movable medium plate at the first bosses.
On the basis of the scheme, the first movable medium plate and the second movable medium plate are connected at a part extending out of the first side of the cavity, and a second boss is arranged between the first movable medium plate and the second movable medium plate at the part.
On the basis of the scheme, the patch cord type antenna further comprises a patch cord arranged inside the cavity, one end of the patch cord is connected with the strip line group, shielding holes which are in one-to-one correspondence with the patch cord and penetrate through the bottom wall of the cavity, and the other end of the patch cord extends out of the cavity through the shielding holes and is used for being connected with a feed network.
On the basis of the scheme, the outer side of the bottom wall of the cavity is connected with two oppositely arranged shielding cavity walls, and the shielding holes are correspondingly positioned between the two shielding cavity walls.
On the basis of the scheme, the bottom of the shielding cavity wall is provided with wiring grooves at intervals.
On the basis of the scheme, a supporting surface is arranged at the edge part inside the cavity, the edge part of the substrate is fixed on the supporting surface, a grounding surface is arranged on the side surface, facing the supporting surface, of the substrate, the grounding surface is connected with the supporting surface, and the grounding surface is disconnected with the strip line group positioned on the same side.
On the basis of the scheme, the cavity comprises a top cover and a bottom cover which are detachably connected; and a fixing column is arranged between the top cover and the bottom cover at the corner part and/or the middle part of the side edge of the cavity, and the top cover and the bottom cover are connected at the fixing column.
On the basis of the scheme, the fixed column is arranged in the middle of the first side of the cavity, second sliding grooves are respectively formed in the positions, corresponding to the fixed column, of the first moving medium plate and the second moving medium plate in the length direction of the strip line group, and the fixed column penetrates through the second sliding grooves.
The embodiment of the invention also provides a base station antenna, which comprises the dielectric phase shifter, a feed network and a radiation unit, wherein the dielectric phase shifter is connected with the radiation unit through the feed network.
According to the dielectric phase shifter and the base station antenna provided by the embodiment of the invention, a plurality of groups of strip line groups are integrated on a substrate, and phase control adjustment is realized through a pair of movable dielectric plates, so that the dielectric phase shifter can adjust multiple paths of signals at the same time, and compared with the existing method that a large number of single independent phase shifters are used, the number of cavities can be reduced, the space required by installation is reduced, meanwhile, the number of grounding pins is reduced, the processing difficulty and cost are reduced, and the installation is facilitated; and the movable medium plate moves relative to the plurality of strip line groups simultaneously, and the consistency of each port can be improved.
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 those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a dielectric phase shifter according to an embodiment of the present invention;
FIG. 2 is an exploded view of a dielectric phase shifter according to an embodiment of the present invention;
FIG. 3 is a schematic overall view of a phase-shifting PCB board according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a set of striplines in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a moving media board according to an embodiment of the invention;
FIG. 6 is a schematic diagram of the connection between the phase-shifting PCB and the moving dielectric plate according to the embodiment of the present invention;
FIG. 7 is a schematic diagram of the internal structure of the chamber according to the embodiment of the present invention;
FIG. 8 is a schematic side view of a dielectric phase shifter according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a shielding cavity wall according to an embodiment of the invention.
Description of reference numerals:
wherein, 1, a cavity; 11. a top cover; 12. a bottom cover; 121. a step structure; 122. a substrate fixing hole; 123. a shielding hole; 124. screw holes; 125. supporting legs; 126. fixing a column; 127. welding a pin; 128. shielding the cavity wall; 129. a wiring groove; 13. a screw; 2. moving the dielectric slab; 21. a first moving medium plate; 211. an impedance matching slot; 212. a second chute; 213. a dielectric plate fixing hole; 214. a dielectric plate mounting hole; 22. a second moving medium plate; 221. a second boss; 222. a first boss; 3. a phase-shift PCB board; 31. a set of striplines; 311. a first strip line; 312. metallizing the via hole; 313. a second strip line; 32. a substrate mounting hole; 33. a substrate; 34. an edge slot; 35. a first chute; 36. a central card slot; 37. a ground plane; 4. a rivet set; 41. a substrate rivet; 42. a dielectric plate rivet; 43. rivet buckling; 5. and (6) a patch cord.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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.
In the description of the present invention, it should be noted that, 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, an embodiment of the present invention provides a dielectric phase shifter, which includes a cavity 1, and a phase-shifting PCB 3 and a moving dielectric plate 2 disposed inside the cavity 1. The phase-shift PCB 3 includes a substrate 33 fixed inside the cavity 1 and a plurality of strip line groups 31 arranged side by side on the substrate 33, wherein each strip line group 31 includes a first strip line 311 and a second strip line 313 which are correspondingly arranged on two side surfaces of the substrate 33 and connected with each other.
Referring to fig. 2, the moving medium plate 2 includes a first moving medium plate 21 and a second moving medium plate 22 provided on both sides of a base plate 33 (fig. 2 illustrates only the component composition of the dielectric phase shifter, and the positional relationship of connection between the components is not limited). The first moving medium plate 21 and the second moving medium plate 22 are integrally slidably connected to the base plate 33 in the longitudinal direction of the strip line group 31. And the first side of the cavity 1 along the length direction of the strip line group 31 is open, and the moving medium plate 2 extends out of the cavity 1 from the first side of the cavity 1.
The substrate 33 is fixed inside the chamber 1. The first strip line 311 of each strip line group 31 on the substrate 33 is disposed on one side of the substrate 33, and the second strip line 313 is disposed on the other side of the substrate 33 at a position corresponding to the first strip line 311. The first strip line 311 and the second strip line 313 may be connected by a metalized via 312. Each of the stripline groups 31 forms a phase shift unit.
Referring to fig. 3, a plurality of strip line groups 31 are integrally provided on a substrate 33. This corresponds to the phase shift units being integrally provided on one substrate 33. So that the dielectric phase shifter can simultaneously realize phase control adjustment on multiple signals. The plurality of groups of striplines 31 are arranged side by side, i.e., the plurality of groups of striplines 31 are arranged in a row array. The plurality of strip line groups 31 are made parallel in the length direction, so that the plurality of strip line groups 31 can be moved simultaneously by the movement of the moving medium plate 2, which is beneficial to improving the port consistency of the plurality of strip line groups 31.
Both sides of the substrate 33 are provided with strip lines, and both sides of the substrate 33 are provided with the moving medium plates 2. The first moving dielectric plate 21 and the second moving dielectric plate 22 can displace the first strip line 311 and the second strip line 313 on both sides of the substrate 33, which can ensure smooth phase shift, and is beneficial to improving the integration level of the phase shifter and reducing the space required for installing the phase shifter.
Set up cavity 1 and be the opening form along stripline group 31 length direction's first side, and remove dielectric slab 2 and stretch out cavity 1 from cavity 1 first side, be convenient for remove dielectric slab 2 and connect outside transmission and realize moving, and then play and control the regulation mutually.
In the dielectric phase shifter provided by the embodiment, the plurality of groups of strip line groups 31 are integrally arranged on the substrate, and phase control adjustment is realized through the pair of movable dielectric plates 2, so that the dielectric phase shifter can simultaneously adjust multiple paths of signals, and compared with the conventional single independent phase shifter, the number of cavities 1 can be reduced, the space required by installation is reduced, meanwhile, the number of grounding pins is reduced, the processing difficulty and the cost are reduced, and the installation is facilitated; and the moving medium plate moves simultaneously relative to the plurality of strip line groups 31, the consistency of each port can be improved.
Further, referring to fig. 3, the strip line group 31 may be a metal bent structure. The plurality of groups of striplines are uniform in length. The metal bending strip line group 31 is composed of more than 3 groups of metal bending strip lines, and the embodiment shown in fig. 3 adopts 8 groups of metal bending strip lines; and the lengths of the metal bending strip lines are consistent to ensure that the phases are consistent. Referring to fig. 4, the metal bending strip line group 31 is composed of first and second strip lines 311 and 313 and a metalized via 312. The first strip line 311 and the second strip line 313 are connected by a metalized via 312.
In addition to the above embodiments, referring to fig. 3, a plurality of first chutes 35 penetrating through the substrate 33 are provided at intervals on the substrate 33. The first runner 35 is along the length of the stripline group 31. Referring to fig. 5 and 6, a first boss 222 is provided between the first moving medium plate 21 and the second moving medium plate 22 at a position corresponding to the first chute 35, and the first boss 222 penetrates the first chute 35. And the first moving medium plate 21 and the second moving medium plate 22 are connected at the first boss 222.
On the basis of the above embodiment, further, the first moving medium plate 21 and the second moving medium plate 22 are connected at a portion protruding out of the first side of the cavity 1. And a second boss 221 is provided between the first moving medium plate 21 and the second moving medium plate 22 at this position.
Specifically, referring to fig. 3, in the present embodiment, two first sliding grooves 35 are disposed on the substrate 33, wherein one of the first sliding grooves 35 is disposed near one side of the substrate 33, and the other first sliding groove 35 is disposed near the other side of the substrate 33. The first moving medium plate 21 and the second moving medium plate 22 are connected in the first chute 35 and move along the first chute 35. This arrangement is advantageous in improving the stability of the movement of the moving-medium plate 2 relative to the base plate 33. Further, the number and the positions of the first sliding grooves 35 may be flexibly set to achieve stable sliding of the movable medium plate 2, which is not limited specifically.
Referring to fig. 5, the first boss 222 is attached to the second moving medium plate 22 located below in the present embodiment. The first bosses 222 are arranged in one-to-one correspondence with the first chutes 35. A dielectric plate fixing hole 213 is provided at a position corresponding to the first boss 222 on the upper first moving dielectric plate 21. The first boss 222 is also provided with a through hole penetrating the second moving medium plate 22. The second boss 221 is connected to the upper surface of the second moving medium plate 22 at a position extending out of the cavity 1. The first moving medium plate 21 and the second moving medium plate 22 are provided with a plurality of sets of medium plate mounting holes 214 at positions extending out of the cavity 1.
Referring to fig. 6, in the embodiment, the second moving medium plate 22 is below the base plate 33, and the first boss 222 correspondingly penetrates through the first chute 35 on the base plate 33 and abuts against the lower surface of the first moving medium plate 21. The dielectric plate rivet 42 sequentially passes through the dielectric plate fixing hole 213 and the first boss 222 from above the first moving dielectric plate 21 and then is connected with the rivet buckle 43 below the second moving dielectric plate 22, so that the first moving dielectric plate 21 and the second moving dielectric plate 22 are detachably connected. At the same time, the first boss 222 is movable along the first slide groove 35, thereby achieving integral sliding connection of the first moving medium plate 21 and the second moving medium plate 22 with respect to the base plate 33.
The portions of the first moving medium plate 21 and the second moving medium plate 22 protruding out of the cavity 1 also protrude out of the base plate 33. At this position, the second boss 221 of the second moving medium plate 22 also abuts against the lower surface of the first moving medium plate 21; and the first moving medium plate 21 and the second moving medium plate 22 may be connected by rivets, screws, or the like at the medium plate attaching holes 214 at this portion.
Further, referring to fig. 6, the dielectric plate rivets 42 must not exceed the height of the interior of the phase shifter cavity 1. The medium plate rivet 42 passes through the medium plate fixing hole 213 of the moving medium plate and the corresponding first sliding slot 35 on the phase-shift PCB 3 to be connected and fixed with the rivet buckle 43. The specific layer structure is a first moving medium plate 21, a substrate 33 and a second moving medium plate 22 in sequence. The gap between the medium plates is kept constant by the medium plate rivet 42, the first boss 222, the second boss 221 and the rivet buckle 43, and the change of the electric index caused by medium looseness is avoided.
The first boss 222 in this embodiment is provided on the second side of the moving medium plate 2 along the length direction of the stripline group 31; the second protrusion 221 is provided on a second side of the moving-medium plate 2 along the length direction of the stripline group 31. The moving medium plates 2 are fixedly connected on both sides in the length direction of the strip line group 31, so that the stable integral connection of the moving medium plates 2 is realized. Meanwhile, the thickness of the first boss 222 and the second boss 221 between the first moving medium plate 21 and the second moving medium plate 22 may be the same, and the boss thickness may be the same as the thickness of the base plate 33, in order to ensure a constant gap width between the medium plates. The gap between the first moving medium plate 21 and the second moving medium plate 22 can be adjusted by adjusting the thickness of the boss.
Further, in the present embodiment, the first boss 222 and/or the second boss 221 may also be connected to the lower surface of the first moving medium plate 21, which is not limited specifically. The connection structure of the first moving medium plate 21 and the second moving medium plate 22 at the first boss 222 may be other than a rivet structure, for example, the end of the first boss 222 may be welded or bonded to the medium plates on both sides, or the connection of the medium plates may be realized by bolts, or the first boss 222 on the second moving medium plate 22 sequentially passes through the first chute 35 and the first moving medium plate 21 to realize the connection of the medium plates, which is not limited specifically.
Further, the sliding connection structure between the moving medium plate 2 and the base plate 33 may be other structures, for example, guide rails may be respectively disposed on both sides of the base plate 33, the guide rails are disposed along the length direction of the strip line group 31, and the first moving medium plate 21 and the second moving medium plate 22 are respectively connected to the guide rails to realize the sliding connection with the base plate. Or a matched bump-groove structure can be arranged between the moving medium plate 2 and the base plate 33 to realize sliding connection. The sliding connection structure between the moving-medium plate 2 and the base plate 33 may be any structure that can achieve relative sliding, and is not particularly limited.
On the basis of the above embodiments, further, the dielectric phase shifter provided in this embodiment further includes a patch cord 5 disposed inside the cavity 1, and one end of the patch cord 5 is connected to the strip line group 31, as shown in fig. 6. Referring to fig. 7, the bottom wall of the cavity 1 is provided with shielding holes 123 corresponding to the patch cables 5 one to one, and the other ends of the patch cables 5 extend out of the cavity 1 through the shielding holes 123 for connecting to the feeding network.
On the basis of the above embodiment, further, referring to fig. 8, two shielding cavity walls 128 arranged oppositely are connected to the outer side of the bottom wall of the cavity 1, and the shielding hole 123 is correspondingly located between the two shielding cavity walls 128. The other end of the patch cord 5 passes through the shield aperture 123 and is positioned between the shield cavity walls 128. A shield cavity is formed between the two shield cavity walls 128. Specifically, the shielding cavity walls 128 may be disposed along a direction perpendicular to the length direction of the stripline group 31, so that each shielding hole 123 is correspondingly located between two shielding cavity walls 128. The shielding chamber wall 128 serves to shield the patch cords 5 that extend out of the chamber 1. The length of the shielding cavity wall 128 may or may not run through the cavity 1, so that each shielding hole 123 is located in the shielding cavity, and thus each patch cord 5 is located in the shielding cavity.
On the basis of the above embodiment, further, referring to fig. 9, the bottom of the shielding cavity wall 128 is provided with wiring grooves 129 at intervals. I.e., a section of the wiring groove 129 is hollowed out at intervals at the bottom of the shield cavity wall 128. The wiring groove 129 at the bottom of the shielding cavity wall 128 enables the bottom of the shielding cavity wall 128 to be in a concave-convex spacing structure. A wiring groove 129 is formed in the concave part, so that the wiring can pass through conveniently; the bulge may facilitate attachment securement of the shield cavity wall 128. The wiring groove 129 with a certain height is arranged on the shielding cavity wall 128, so that the space occupancy of the feed network is reduced under the condition that the electric index of the phase shifter is not influenced, and the network wiring can pass through the cavity 1 for layout.
Further, referring to fig. 8 and 9, a plurality of solder feet 127 are attached to the bottom of the shield cavity wall 128 at spaced intervals. Facilitating attachment securement of the shield cavity wall 128. Preferably, the solder feet 127 are located on the bottom of the shield cavity wall 128 outside of the routing channel 129. I.e., the solder feet 127 are located at a lower elevation on the bottom of the shield cavity wall 128.
In addition to the above embodiments, a supporting surface is provided at an inner edge portion of the chamber 1, and an edge portion of the substrate 22 is fixed to the supporting surface. The substrate 33 has a ground plane 37 on its side facing the support surface, the ground plane 37 is connected to the support surface, and the ground plane 37 is disconnected from the strip line group 31 on the same side.
The support surface is used to support the fixed substrate 33. Referring to fig. 7, the supporting surface of the present embodiment includes a step structure 121 disposed inside the cavity 1 and along a second side of the strip line group 31 in the length direction, and supporting ribs disposed inside the cavity 1 and adjacent to the second side of the cavity 1. The substrate 33 is placed on the step structure 121 and the support ribs. The supporting ribs are rib structures protruding from the inner wall of the cavity 1 for supporting the substrate 33. Wherein, a substrate fixing hole 122 is arranged on the step structure 121 and the supporting convex strip; the substrate is correspondingly provided with a substrate mounting hole 32, as shown in fig. 3. Referring to fig. 6, the substrate rivet 41 may fix the substrate 33 at the substrate fixing hole 122 through the substrate mounting hole 32, thereby achieving the fixing of the substrate 33 inside the chamber 1.
Further, the structure of the supporting surface may be other, for example, step structures 121 may be disposed on other sides of the cavity 1 except the first side of the cavity 1 to support and fix the substrate 33; the inner wall of the cavity 1 can be connected with a clamping groove to be matched with the side edge of the substrate to realize the supporting and fixing of the substrate 33; supporting convex strip structures can be arranged on the other sides except the first side of the cavity 1 in the cavity 1 to support and fix the substrate 33; supporting tables can be arranged at the inner edge part of the cavity 1 at intervals along the circumferential direction for supporting and fixing the substrate and the like; specifically, the substrate 33 is not limited to the above-described substrate support.
The fixing structure for connecting the substrate 33 and the supporting surface may be other than a rivet, and may be, for example, a bolt connection, a snap connection, a welding connection, an adhering connection, and the like, which is not limited in particular.
Further, the support surface is connected to an edge portion of the substrate. The set of striplines 31 may be disposed at a distance from the edge of the substrate 33; so that there may be no contact between the moving medium plate and the support surface. So that one side of the substrate 33 can directly interface with the support surface. A ground plane 37 may be provided on the side of the substrate 33 facing the support surface. Referring to fig. 4, the ground plane 37 is a metal plane; a ground plane 37 is provided on the substrate at a position corresponding to the support surface. The ground plane 37 is dimensioned to conform to the shape of the substrate, i.e., the edge portion is dimensioned to conform to the shape of the substrate. The ground plane 37 is disposed on the lower surface of the substrate and can be in seamless contact with a part of the upper surface of the bottom wall of the phase shifter cavity 1, i.e. the supporting surface, to achieve a good grounding effect.
Further, referring to fig. 4, the second strip line 313 is provided on a side of the substrate 33 facing the supporting surface. At this time, the ground plane 37 is separated from the second strip line 313 by a certain distance, i.e., the ground plane and the second strip line are disconnected, thereby avoiding a short circuit phenomenon.
Further, referring to fig. 4, the first strip line 311 is provided at a side of the substrate 33 facing away from the supporting surface. The first strip line 311 is connected with an impedance matching structure; the impedance matching structure is located at an edge portion of the substrate 33, i.e., at a position corresponding to the supporting surface. At this time, referring to fig. 7, the shielding hole 123 may be disposed on the stepped structure 121, one end of the patch cord 5 may pass through the substrate 33 to be connected to the impedance matching structure, and the other end of the patch cord 5 passes through the shielding hole 123 and out of the cavity 1.
On the basis of the above embodiment, further, referring to fig. 2 and 7, the chamber 1 includes a top cover 11 and a bottom cover 12 detachably connected. Fixing posts 126 are provided between the top cover 11 and the bottom cover 12 at the corners and/or the middle of the sides of the chamber 1, and the top cover 11 and the bottom cover 12 are connected at the fixing posts 126.
On the basis of the above embodiment, further, a fixed column 126 is disposed in the middle of the first side of the cavity 1, second sliding chutes 212 are respectively disposed at the positions of the first moving medium board 21 and the second moving medium board 22 corresponding to the fixed column 126 along the length direction of the strip line group 31, and the fixed column 126 passes through the second sliding chutes 212.
Specifically, referring to FIG. 7, the bottom cover 12 in this embodiment includes a bottom wall and three side walls. The bottom cover 12 is provided with fixing posts 126 at four corners and a middle portion of the long side. Screw holes 124 are provided on the fixing posts 126. Referring to fig. 2, the top cover 11 may have a plate shape, and the top cover 11 is detachably coupled to the bottom cover 12 at screw holes 124 by screws 13. Set up in the fixed column 126 of four corners position in this embodiment can not exert an influence to the removal of moving medium board 2, for avoiding locating fixed column 126 in the middle of the first side of cavity 1 and exerting an influence to moving medium board 2, refer to fig. 5, be equipped with second spout 212 on first moving medium board 21 and second moving medium board 22 respectively, make fixed column 126 that is located in the middle of the first side of cavity 1 pass second spout 212, thereby both realized the firm connection of top cap 11 and bottom 12, guarantee the stability of cavity 1 shape size, the smooth removal of moving medium board 2 has been guaranteed simultaneously, still can play limiting displacement to the removal of moving medium board 2.
Furthermore, the arrangement position and the number of the fixing posts 126 can be flexibly arranged according to actual needs without limitation. The detachable connection structure between the top cover 11 and the bottom cover 12 may also be other structures, such as a snap structure, etc., for the purpose of enabling the detachable connection between the top cover 11 and the bottom cover 12, and is not limited in particular.
Furthermore, the top cover 11 of the phase shifter cavity 1 is made of metal material or surface gold-plated material, and is provided with screw holes 124, and is fixed with the bottom cover 12 of the phase shifter cavity 1 through screws 13. The bottom cover 12 of the phase shifter cavity 1 is made of metal material or surface gold-plated material.
Further, a plurality of support legs 125 are connected to the bottom of the chamber 1. For fixing the phase shifter and for grounding the chamber 1.
On the basis of the above embodiment, further, a card slot matched with the fixing column 126 is provided on the substrate 33. So that the substrate 33 matches the inner dimension and shape of the chamber 1. Specifically, referring to fig. 3, the four corners of the substrate 33 may be provided with edge engaging slots 34 matching with the shapes of the fixing posts 126 disposed at the four corners of the cavity 1; the middle part of the long edge of the substrate 33 is provided with a central clamping groove 36 which is matched with a fixing column 126 arranged at the middle part of the long edge of the cavity 1 in shape.
The matching of the clamping groove on the substrate 33 and the fixing column 126 can also play a role in limiting and positioning the substrate 33, so that the substrate 33 can be conveniently and accurately mounted. The specific arrangement position and number of the card slots on the substrate 33 are adapted to the arrangement of the fixing posts 126, and are not limited specifically.
Further, in this embodiment, a fixing column 126 is disposed in the middle of the first side of the cavity 1, and the fixing column 126 is connected with a step surface, and the height of the step surface is consistent with the supporting surface. The substrate 33 is placed on the step surface at the first side position of the cavity 1 and is fixedly connected with the step surface; and a central slot 36 matching with the fixing post 126 is provided. Stable supporting fixation of the base plate 33 can be achieved.
On the basis of the foregoing embodiments, further, this embodiment provides a base station antenna, including the dielectric phase shifter described in any of the foregoing embodiments, further including a feed network and a radiation unit, where the dielectric phase shifter is connected to the radiation unit through the feed network. The base station antenna may further include a reflection plate, and the dielectric phase shifter, the feeding network, and the radiation unit may be respectively disposed on the reflection plate.
On the basis of the above embodiments, further, the present embodiment provides a dielectric phase shifter, which is used to solve the technical defects of the existing phase shifter, such as large occupied PCB space, poor phase consistency, complex processing, high cost, difficult assembly, low mass production efficiency, difficult debugging, and the like. Compared with the existing large-scale array antenna phase shifter technology, the array type dielectric phase shifter provided by the embodiment has the advantages of small space occupation ratio of the feed network, low cost, simple assembly and convenience in debugging, and effectively improves the performance of the whole machine.
The dielectric phase shifter mainly comprises a phase shifter cavity 1, a movable dielectric plate 2, a phase-shifting PCB 3, a rivet group 4 and a patch cord 5. The phase shifter cavity 1 is made of metal materials or metal-plated materials and comprises a top cover 11 of the phase shifter cavity 1, a bottom cover 12 of the phase shifter cavity 1 and screws 13. The moving medium plate 2 is composed of a first moving medium plate 21 and a second moving medium plate 22. The phase-shifting PCB 3 is arranged between the first moving medium plate 21 and the second moving medium plate 22 and fixed in the phase shifter cavity 1. The patch cord 5 passes through the bottom cover 12 of the phase shifter cavity 1 and is connected with the phase shift PCB 3.
Screw holes 124 are arranged at four corners and the middle part of the top cover 11 of the phase shifter cavity 1, and the screws 13 can be fixed with the bottom cover 12 of the phase shifter cavity 1 through the screw holes 124. The inner edge of the bottom cover 12 of the phase shifter cavity 1 is provided with a step structure 121, a substrate fixing hole 122 and a shielding hole 123, and four corners and the middle part of the bottom cover 12 of the cavity 1 are provided with screw holes 124; the bottom of the cavity 1 is provided with a supporting leg 125, a cavity 1 welding leg 127 and a shielding cavity; the inner wall is provided with a limiting structure, namely a fixing column 126. The step structure 121 is provided with a substrate fixing hole 122; the screw holes 124 are arranged at the four corners and the middle part of the bottom cover 12 of the phase shifter cavity 1 and are fixed with the top cover 11 of the phase shifter cavity 1 through screws 13; the limiting structure is arranged in the middle of the inner side of the bottom cover 12 of the phase shifter cavity 1; the shielding hole 123 is arranged on the stepped structure 121 of the phase shifter cavity 1 and used for installing the patch cord 5 to play a shielding role; six supporting legs 125 disposed at the bottom of the phase shifter cavity 1 for fixing the phase shifter and grounding the cavity 1.
The shielding cavity is formed by shielding cavity walls 128 arranged at two sides of the shielding hole 123 and arranged at the bottom surface of the phase shifter cavity 1; the bottom of the shielding cavity wall 128 is provided with a cavity 1 welding pin 127 for realizing the grounding welding of the cavity 1 with the PCB or the reflection plate, and simultaneously playing a role of shielding the transfer line 5. The patch cord 5 passes through the shielding hole 123 of the bottom cover 12 of the phase shifter cavity 1 and is arranged in the shielding cavity, one end of the patch cord is connected with the metal bending strip line on the phase shift PCB 3, and the other end of the patch cord is connected with the feed network.
The bottom sides of the cavity walls at the two sides of the shielding cavity are provided with welding pins 127 of the cavity 1, and the cavity walls are provided with wiring grooves 129 with a certain height, so that the occupation ratio of the feed network space is reduced under the condition that the electrical indexes of the phase shifter are not influenced, and the network wiring can penetrate through the cavity 1 for layout.
The phase-shift PCB 3 is composed of a metal bending strip line group 31, a substrate and a ground plane 37; the substrate 33 has a first meander strip line on an upper surface thereof and a second meander strip line and a ground plane 37 on a lower surface thereof. The substrate 33 is provided with a metalized through hole 312, a substrate mounting hole 32, a first sliding groove 35 and a card slot. The port of the first bending strip line is provided with an impedance matching structure for adjusting the electrical characteristics of the strip line. The matching structure is provided with a welding hole for connecting the patch cord 5. Referring to fig. 5, the first moving medium plate 21 and the second moving medium plate 22 are each provided with an impedance matching groove 211, a second sliding groove 212, a medium plate fixing hole 213, and a medium plate mounting hole 214, respectively.
This embodiment provides a dielectric phase shifter, compare the current dielectric phase shifter who is applied to 5G antenna mostly for stand alone type single design, cavity 1 is the current situation of closed structure, the phase shifter cavity 1 that this embodiment provided can fixed mounting on 5G large-scale antenna's reflecting plate or PCB, move the dielectric plate 21 and the second removes dielectric plate 22 outwards at the phase shifter PCB board through external transmission drive, each port of the metal bending strip group 31 that is in cavity 1 this moment can keep fine uniformity, thereby realize the same phase beam shaping of 5G antenna. The shielding structure with fewer welding pins realizes a good grounding effect of the cavity 1, reduces the complexity of welding multiple pins of the traditional single phase shifter, and reduces the damage to a feed network. The supporting legs 125 through the cavity 1 not only play a role in fixing well, but also enhance the grounding effect and improve the space utilization rate of the PCB. The design of the lug boss of the medium ensures that the gap between the media is constant, improves the instability of electrical indexes caused by the looseness of the medium, and better ensures the consistency of the amplitude and phase indexes of the phase shifter. The split design of the cavity 1 is convenient for the assembly of the phase shifter, reduces the design and processing difficulty of the antenna, and is also convenient for debugging the electrical performance of each feed port. Through the integrated array design, the die sinking processing cost is reduced, a large amount of time cost is saved, and the mass production efficiency is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A dielectric phase shifter comprises a cavity, a phase-shifting PCB and a movable dielectric slab, wherein the phase-shifting PCB and the movable dielectric slab are arranged in the cavity;
the movable dielectric plate comprises a first movable dielectric plate and a second movable dielectric plate which are arranged on two sides of the substrate, the first movable dielectric plate and the second movable dielectric plate are in integral sliding connection with the substrate along the length direction of the strip line group, the cavity is in an open shape along the first side in the length direction of the strip line group, and the movable dielectric plate extends out of the first side of the cavity.
2. The dielectric phase shifter as claimed in claim 1, wherein a plurality of first slots are formed at intervals on the substrate, the first slots are along a length direction of the stripline group, a first boss is formed between the first moving dielectric plate and the second moving dielectric plate at a position corresponding to the first slots, the first boss penetrates through the first slots, and the first moving dielectric plate and the second moving dielectric plate are connected at the first boss.
3. A dielectric phase shifter as recited in claim 1 wherein said first moving dielectric plate and said second moving dielectric plate are connected at a location extending beyond a first side of said cavity and a second boss is provided between said first moving dielectric plate and said second moving dielectric plate at said location.
4. The dielectric phase shifter as claimed in any one of claims 1 to 3, further comprising a patch cord disposed inside the cavity, wherein one end of the patch cord is connected to the strip line group, shielding holes penetrating the cavity are disposed on a bottom wall of the cavity in one-to-one correspondence with the patch cords, and the other end of the patch cord extends out of the cavity through the shielding holes for connection to a feed network.
5. The dielectric phase shifter as claimed in claim 4, wherein two opposite shielding cavity walls are connected to the outside of the bottom wall of the cavity, and the shielding holes are correspondingly located between the two shielding cavity walls.
6. The dielectric phase shifter of claim 5, wherein the bottom of the shielding cavity wall is spaced apart to provide a routing channel.
7. A dielectric phase shifter as claimed in any one of claims 1 to 3, wherein a supporting surface is provided at an inner edge portion of the cavity, an edge portion of the substrate is fixed to the supporting surface, a ground plane is provided on a side surface of the substrate facing the supporting surface, the ground plane is connected to the supporting surface, and the ground plane is disconnected from the group of strip lines on the same side.
8. A dielectric phase shifter according to any one of claims 1 to 3, wherein the cavity comprises a top cover and a bottom cover which are detachably connected; and a fixing column is arranged between the top cover and the bottom cover at the corner part and/or the middle part of the side edge of the cavity, and the top cover and the bottom cover are connected at the fixing column.
9. The dielectric phase shifter as claimed in claim 8, wherein the fixed post is disposed at a middle portion of the first side of the cavity, and second sliding slots are respectively disposed at positions of the first moving dielectric plate and the second moving dielectric plate corresponding to the fixed post along a length direction of the stripline group, and the fixed post passes through the second sliding slots.
10. A base station antenna, comprising the dielectric phase shifter according to any one of claims 1 to 9, further comprising a feeding network and a radiating element, wherein the dielectric phase shifter is connected to the radiating element through the feeding network.
CN202010641650.XA 2020-07-06 2020-07-06 Dielectric phase shifter and base station antenna Pending CN111668578A (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040080380A1 (en) * 2002-10-29 2004-04-29 Radio Frequency Systems; Inc. Hybrid phase shifter and power divider
US20090195460A1 (en) * 2008-02-01 2009-08-06 Hiroshi Kanno Endfire antenna apparatus with multilayer loading structures
CN203721853U (en) * 2014-02-27 2014-07-16 武汉虹信通信技术有限责任公司 Novel cavity phase shifter
CN104681896A (en) * 2015-03-23 2015-06-03 武汉虹信通信技术有限责任公司 Integrated multipath dielectric phase shifter
CN105244568A (en) * 2015-10-30 2016-01-13 京信通信技术(广州)有限公司 Phase shifter dielectric plate and phase shifter
CN207250725U (en) * 2017-04-28 2018-04-17 广州司南天线设计研究所有限公司 A kind of 15 oscillator space solid phase shifters and phase shifter package for antenna for base station
CN108879035A (en) * 2018-06-28 2018-11-23 京信通信系统（中国）有限公司 Medium slidingtype phase shifter and antenna for base station
CN208352500U (en) * 2018-07-06 2019-01-08 武汉虹信通信技术有限责任公司 A kind of phase shifter dielectric-slab, phase shifter module and antenna for base station
CN109755696A (en) * 2019-02-27 2019-05-14 东南大学 A kind of wideband cavity phase shifter
CN110867630A (en) * 2019-11-27 2020-03-06 武汉虹信通信技术有限责任公司 Dielectric phase shifter

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040080380A1 (en) * 2002-10-29 2004-04-29 Radio Frequency Systems; Inc. Hybrid phase shifter and power divider
US20090195460A1 (en) * 2008-02-01 2009-08-06 Hiroshi Kanno Endfire antenna apparatus with multilayer loading structures
CN203721853U (en) * 2014-02-27 2014-07-16 武汉虹信通信技术有限责任公司 Novel cavity phase shifter
CN104681896A (en) * 2015-03-23 2015-06-03 武汉虹信通信技术有限责任公司 Integrated multipath dielectric phase shifter
CN105244568A (en) * 2015-10-30 2016-01-13 京信通信技术(广州)有限公司 Phase shifter dielectric plate and phase shifter
CN207250725U (en) * 2017-04-28 2018-04-17 广州司南天线设计研究所有限公司 A kind of 15 oscillator space solid phase shifters and phase shifter package for antenna for base station
CN108879035A (en) * 2018-06-28 2018-11-23 京信通信系统（中国）有限公司 Medium slidingtype phase shifter and antenna for base station
CN208352500U (en) * 2018-07-06 2019-01-08 武汉虹信通信技术有限责任公司 A kind of phase shifter dielectric-slab, phase shifter module and antenna for base station
CN109755696A (en) * 2019-02-27 2019-05-14 东南大学 A kind of wideband cavity phase shifter
CN110867630A (en) * 2019-11-27 2020-03-06 武汉虹信通信技术有限责任公司 Dielectric phase shifter

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