CN112003017A - Phase-shifting feed device of array antenna and array antenna - Google Patents
Phase-shifting feed device of array antenna and array antenna Download PDFInfo
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- CN112003017A CN112003017A CN202010757570.0A CN202010757570A CN112003017A CN 112003017 A CN112003017 A CN 112003017A CN 202010757570 A CN202010757570 A CN 202010757570A CN 112003017 A CN112003017 A CN 112003017A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/32—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by mechanical means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention relates to the field of mobile communication equipment, and provides an array antenna phase-shifting feed device and an array antenna. The phase-shifting feed device of the array antenna comprises a cavity, a phase-shifting circuit board, dielectric sheets and a feed circuit board, wherein the phase-shifting circuit board is fixed in the cavity and divides the cavity into two cavities, the two dielectric sheets are respectively accommodated in the two cavities and can synchronously slide relative to the phase-shifting circuit board, the phase-shifting circuit board is inserted in the feed circuit board, a block-up block is constructed at the bottom of the cavity, and the block-up block is arranged between the bottom of the cavity and the feed circuit board. According to the array antenna phase-shifting feed device provided by the invention, the heightening block is constructed at the bottom of the cavity, and when the phase shifter is installed on the feed circuit board, a gap is formed between the bottom of the cavity and the feed circuit board, so that the feed network can be arranged in a projection area of the cavity projected onto the feed circuit board, the transverse layout size of the phase shifter and the feed network on the array antenna is effectively reduced, and flexible layout is realized.
Description
Technical Field
The invention relates to the technical field of mobile communication equipment, in particular to an array antenna phase-shifting feed device and an array antenna.
Background
To meet the coverage requirement of the 5G communication system, a 64-channel large-scale array antenna is often used, wherein each antenna channel needs to be configured with a transceiver component, so that the cost of the 64-channel large-scale array antenna is relatively high. In order to reduce the cost of the antenna and ensure the shaping effect of a large-scale array antenna, the radio frequency channels are reduced to 32 channels or 16 channels by adopting a mode of combining mechanical phase shifting and digital shaping. The mechanical phase shifting is usually realized by means of a phase shifter.
The existing cavity phase shifter applicable to the 4G antenna is provided with at least three ports, a welding groove is formed in the side wall of the cavity, and a cable is welded at each port. If the cavity phase shifter of the 4G antenna is directly applied to the 5G array antenna, it is difficult to effectively arrange the cavity phase shifter in the complex structure of the 5G array antenna due to the large volume of the cavity. In addition, the welding process of the cables of the phase shifter port and the antenna unit input port is complex, and the consistency of the product is difficult to guarantee. Therefore, it is necessary to develop a phase shifter with small size, flexible layout, simple and reliable mounting process, and stable performance to meet the application requirements of 5G large-scale array antennas.
Disclosure of Invention
The invention aims to provide an array antenna phase-shifting feed device and an array antenna, which are used for solving the problem that the existing phase-shifting feed device occupies a large space.
In order to solve the technical problem, the invention provides an array antenna phase-shifting feed device which comprises a cavity, a phase-shifting circuit board, two medium pieces and a feed circuit board, wherein the phase-shifting circuit board is fixed in the cavity to divide the cavity into two cavities, the two medium pieces are respectively accommodated in the two cavities and can synchronously slide relative to the phase-shifting circuit board, the phase-shifting circuit board is inserted in the feed circuit board, a heightening block is constructed at the bottom of the cavity, and the heightening block is arranged between the bottom of the cavity and the feed circuit board in a cushioning manner.
The heightening block extends downwards along the outer wall of the cavity, and is inserted into a reserved grounding hole in the feed circuit board.
The phase-shifting circuit board comprises a phase-shifting circuit board, a phase-shifting circuit and a control circuit, wherein the two surfaces of the phase-shifting circuit board are respectively provided with the phase-shifting circuit, and the phase-shifting circuits are continuous broken lines.
One end of the phase-shift circuit board is bent to form a connecting part, two pins are constructed on the connecting part, the phase-shift circuit is U-shaped, and the input end and the output end of the phase-shift circuit are connected with the corresponding pins.
The phase shift circuit board is clamped in the two opposite long grooves, one end of the bottom of each long groove is provided with a limiting groove, and the connecting part is clamped in the limiting grooves.
One of the dielectric sheets is provided with a clamping column, the other dielectric sheet is provided with a clamping groove, the phase-shifting circuit board is provided with a sliding groove, the length of the sliding groove is larger than the stroke of the phase shifter, and the clamping column penetrates through the sliding groove and is clamped in the clamping groove.
And one side of each dielectric sheet, which is far away from the phase-shifting circuit board, is provided with a plurality of bulges, and each bulge is abutted against the inner wall of the cavity.
The feed circuit board is provided with a feed network, and the cavity and the feed network are positioned on the same side of the feed circuit board.
Wherein the phase shift circuit board is perpendicular to the feed circuit board.
In addition, the embodiment of the invention also provides an array antenna, which comprises the array antenna phase-shifting feeding device.
According to the array antenna phase-shifting feed device provided by the invention, the heightening block is constructed at the bottom of the cavity, and when the phase shifter is installed on the feed circuit board, a gap is formed between the bottom of the cavity and the feed circuit board, so that the feed network can be arranged in a projection area of the cavity projected onto the feed circuit board, the transverse layout size of the phase shifter and the feed network on the array antenna can be effectively reduced, and flexible layout is realized.
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 an exploded view of a phase-shifting feeding device of an array antenna according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the phase shifter shown in FIG. 1;
FIG. 3 is an exploded view of the phase shifter shown in FIG. 2;
FIG. 4 is a perspective view of the chamber shown in FIG. 3;
FIG. 5 is a schematic structural diagram of the phase shift circuit board shown in FIG. 3;
FIG. 6 is a schematic view of the construction of the media sheet shown in FIG. 3;
fig. 7 is an exploded view of a phase-shifting feeding device of an array antenna according to another embodiment of the present invention.
In the figure: 10. a cavity; 11. a block for raising; 12. a long groove; 13. a limiting groove; 20. a phase shift circuit board; 21. a phase shift circuit; 22. a connecting portion; 23. a pin; 24. a chute; 25. a metal via; 30. a dielectric sheet; 31. clamping the column; 32. a card slot; 33. a protrusion; 34. a matching groove; 35. an installation part; 40. a feed circuit board; 41. a feed network; 42. a ground hole; 43. the vias are metallized.
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 embodiments of the present invention, it should be noted that the terms "first" and "second" are used for the sake of clarity in describing the numbering of the components of the product and do not represent any substantial difference, unless explicitly stated or limited otherwise. The directions of "up", "down", "left" and "right" are all based on the directions shown in the attached drawings. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
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.
Fig. 1 is an exploded view of a phase-shifting feeding device of an array antenna according to an embodiment of the present invention. As shown in fig. 1, the phase shift feeding device of the array antenna includes a cavity 10, a phase shift circuit board 20, a dielectric sheet 30 and a feeding circuit board 40. The phase-shift circuit board 20 is fixed in the cavity 10 to divide the cavity 10 into two cavities, and the two dielectric sheets 30 are respectively accommodated in the two cavities and can synchronously slide relative to the phase-shift circuit board 20. The phase shifter structure formed by connecting the cavity 10, the phase shift circuit board 20 and the dielectric sheet 30 is shown in fig. 2. As shown in fig. 1, the phase shift circuit board 20 is inserted into the feeding circuit board 40, a block 11 is configured at the bottom of the cavity 10, and the block 11 is arranged between the bottom of the cavity 10 and the feeding circuit board 40.
The block 11 may be a structure integrated with the cavity 10, or a protrusion fixed to the bottom of the cavity 10 by clamping. The padding block 11 is arranged between the cavity 10 and the feed circuit board and then is arranged in a gap between the bottom of the cavity 10 and the feed circuit board.
According to the array antenna phase-shifting feed device provided by the embodiment of the invention, the heightening block 11 is constructed at the bottom of the cavity 10, when the phase shifter is installed on the feed circuit board 40, a gap is formed between the bottom of the cavity 10 and the feed circuit board 40, namely, the phase shifter can be suspended above the feed circuit board 40 through the heightening block 11, so that a feed network can be arranged in a projection area of the cavity 10 projected onto the feed circuit board 40. When the traditional phase shifter is arranged on the same side as the feed network, the feed network is positioned outside the projection area of the phase shifting cavity projected onto the feed circuit board 40, so as to ensure that the feed network and the cavity 10 keep a sufficient safety distance. Compared with the traditional phase shifter, the array antenna phase shifting feed device provided by the embodiment of the invention can effectively narrow the transverse layout size of the phase shifter and the feed network on the array antenna by arranging the heightening block 11 at the bottom of the cavity 10, thereby realizing flexible layout.
Specifically, as shown in fig. 3 and 4, the block 11 is in a raised shape, the block 11 extends downward along the outer wall of the cavity 10, and the raised block 11 is inserted into the ground hole 42 reserved in the feeding circuit board 40. The cavity 10 is a strip-shaped metal member, and the cross section of the metal member is square and annular. The two ends of the cavity 10 are open and comprise a bottom wall, a top wall and two side walls, the two side walls are arranged in parallel, one end of each side wall is fixedly connected with the bottom wall, and the other end of each side wall is fixedly connected with the top wall. The block 11 is a convex structure formed by extending the sidewall of the cavity 10 downward. The number of the heightening blocks 11 can be one or more, as shown in fig. 4, the number of the heightening blocks 11 is four, and the four heightening blocks 11 are distributed at four corners of the bottom wall of the cavity 10, so that the four heightening blocks 11 are distributed in a quadrilateral shape. The projection of the power supply circuit board 40 avoids the position of the power supply network and is inserted into a reserved grounding hole 42 of the power supply circuit board 40.
As shown in fig. 5, phase shift circuits 21 are respectively disposed on two surfaces of the phase shift circuit board 20, and the phase shift circuits 21 are continuous zigzag. The phase shift circuits 21 on both sides are penetrated by metal via holes 25. Wherein, the shape of broken line is continuous V-arrangement broken line, and the V-arrangement angle can be 60 °, 90 or 100 etc. as long as the V-arrangement broken line is symmetrical structure can, guarantees to shift the even change of phase volume when shortening the phase shifter length dimension, also promptly: any two adjacent continuous folding lines and the sliding groove or the long side on the phase-shifting circuit board 20 form an isosceles triangle. According to the array antenna phase-shifting feed device provided by the embodiment of the invention, the length of the phase shifter is shortened through the fold line-shaped phase-shifting circuit, and the moving stroke of the dielectric sheet 30 is reduced.
On the basis of the above embodiment, one end of the phase-shift circuit board 20 is bent to form the connection portion 22, the connection portion 22 is configured with two pins 23, the phase-shift circuit 21 is U-shaped, and the input end and the output end of each phase-shift circuit 21 are respectively connected with the two pins 23. By providing the phase shift circuit 21 in a U shape, the length of the phase shifter can be further shortened, and the moving stroke of the dielectric sheet 30 can be further reduced. As shown in fig. 5, the phase shift circuit 21 includes a first fold line segment, a transition segment, and a second fold line segment connected in sequence; the transition section connects the first fold line section and the second fold line section, and corresponds to the bottom of the U-shape. It should be noted that the two pins, the first fold line segment, the transition segment, and the second fold line segment are continuous circuit structures. The phase-shifting circuit board 20 provided by the embodiment of the invention is a complete integral structure, and compared with the existing phase-shifting circuit board 20 separation welding structure, the integral phase-shifting circuit board 20 has a better matching effect.
As shown in fig. 4, the top wall and the bottom wall of the cavity 10 are respectively provided with an elongated slot 12, the elongated slot 12 penetrates through the front end and the rear end of the cavity 10, the phase-shift circuit board 20 is clamped in the two elongated slots 12 which are oppositely arranged, one end of the bottom of the elongated slot 12 is provided with a limiting slot 13, and the connecting part 22 is clamped in the limiting slot 13. According to the array antenna phase-shifting feed device provided by the embodiment of the invention, the positions of the long grooves 12 arranged on the top wall and the bottom wall are opposite, and the phase-shifting circuit board 20 slides in the long grooves 12 and then is clamped in the long grooves 12, so that the left and right shaking is avoided. The connecting part 22 is clamped in the limiting groove 13 to limit the forward and backward movement of the phase-shift circuit board 20. Therefore, the phase shift circuit board 20 and the cavity 10 are fixed together through the long groove 12 and the limiting groove 13 on the cavity 10.
On the basis of any of the above embodiments, as shown in fig. 6, one of the dielectric sheets 30 is provided with a clamping column 31, and the other dielectric sheet 30 is provided with a clamping groove 32. The phase shift circuit board 20 is provided with a sliding slot 24 with a length larger than the stroke of the phase shifter, and the clamping column 31 passes through the sliding slot 24 and is clamped in the clamping slot 32. The pegs 31 snap into the slots 32 to hold the two sheets 30 together for synchronous movement. As shown in fig. 6, there are two clipping columns 31, and two clipping columns 31 are arranged at intervals along the sliding direction of the medium sheet 30, for example, two clipping columns 31 can be arranged at two opposite ends of the medium sheet 30, correspondingly, and two clipping grooves 32 are arranged on another medium sheet 30, so as to avoid the deviation in the sliding process of the two medium sheets 30, improve the stability in the moving process, and further ensure the consistency in the phase adjusting process.
On the basis of any of the above embodiments, as shown in fig. 6, a plurality of protrusions 33 are disposed on one side of each dielectric sheet 30 away from the phase-shifting circuit board 20, and each protrusion 33 abuts against the inner wall of the cavity 10. The protrusion 33 on the medium sheet 30 can reduce the contact area between the medium sheet 30 and the cavity 10, reduce friction, and make the movement of the medium sheet 30 in the cavity smoother. In addition, the protrusions 33 can make the phase shift circuit board 20 and the dielectric sheet 30 better fit.
Specifically, the outer surface of the protrusion 33 is curved. For example, the protrusion 33 has a hemispherical or semi-ellipsoidal shape, or a truncated cone with a spherical top. As shown in fig. 6, the protrusions 33 are provided in two rows along the length direction of the chamber 10.
Further, the media sheet 30 is provided with a plurality of matching grooves 34. As shown in fig. 6, the matching grooves 34 are square, each of the medium sheets 30 is provided with four matching grooves 34, and the four matching grooves 34 are arranged in two rows and two columns. The operating end of the media sheet 30 is provided with a mounting portion 35, which is fixedly connected to the drive structure of the external pulling media sheet 30 by means of the mounting portion 35.
As shown in fig. 1 and 7, in the phase shifter feeding device of the array antenna according to the embodiment of the present invention, the feeding circuit board 40 is perpendicular to the phase shifting circuit board 20. That is, the phase shifter in the phase shifter feeding device for the array antenna in the embodiment of the invention is of a vertical structure, so that the phenomenon that the horizontal space is excessively occupied is avoided.
The feeding circuit board 40 is provided with a feeding network 41, and as shown in fig. 1, the array antenna phase shift feeding device and the feeding network 41 are located on the same side of the feeding circuit board 40. Of course, the array antenna phase shift feeding device and the feeding network 41 can also be located on different sides of the feeding circuit board 40, as shown in fig. 7, so as to meet different design requirements.
In the phase-shifting feed device of the array antenna provided by the embodiment of the invention, the cavity 10 and the convex block 11 extending downwards from the left and right side walls of the cavity 10 are respectively used as continuous grounding structures of the phase-shifting circuit 21 on the phase-shifting circuit board 20 and the input/output port circuit of the phase-shifting circuit. When the phase shifter is electrically connected with the feed network of the array antenna, the two pins 23 of the phase shift circuit board 20 are inserted and welded with the phase shifter welding port reserved in the feed circuit board 40, the convex block 11 extending downwards on the cavity 10 is inserted and welded with the ground hole 42 of the ground layer on the feed circuit board 40, so that a good matching effect of the phase shifter and the feed network on the feed circuit board 40 is realized in electrical performance, and any other additional switching circuit is not needed.
During assembly, as shown in fig. 3, the clamping posts 31 and the clamping slots 32 of the two dielectric sheets 30 are installed in the sliding slots 24 of the phase-shift circuit board 20 in a buckling manner and tightly attached to two side surfaces of the phase-shift circuit board 20; the mounting portion 35 of the dielectric sheet 30 is located at the same end of the cavity 10 as the connecting portion 22 of the phase-shift circuit board 20. After the dielectric sheet 30 and the phase-shift circuit board 20 are assembled, the integral structure formed by the dielectric sheet 30 and the phase-shift circuit board 20 is pushed from one end of the cavity 10 to the other end until the connecting portion 22 of the phase-shift circuit board 20 is clamped in the limiting groove 13. Finally, the two pins 23 are respectively soldered in the metalized vias 43 reserved on the feeding circuit board 40, and the solder legs of the convex block-raised 11 extending downward along the left and right side walls of the cavity 10 are inserted and soldered in the grounding holes 42 of the ground layer on the feeding circuit board 40.
Besides, the embodiment of the invention also provides an array antenna, which comprises the array antenna phase-shifting feeding device.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The phase-shifting feed device of the array antenna comprises a cavity, a phase-shifting circuit board, two medium pieces and a feed circuit board, and is characterized in that the phase-shifting circuit board is fixed in the cavity and divides the cavity into two cavities, the two medium pieces are respectively accommodated in the two cavities and can synchronously slide relative to the phase-shifting circuit board, the phase-shifting circuit board is inserted in the feed circuit board, a heightening block is constructed at the bottom of the cavity, and the heightening block is arranged between the bottom of the cavity and the feed circuit board in a cushioning manner.
2. The array antenna phase-shifting feeding device of claim 1, wherein the block is in a shape of a Chinese character 'tu', the block extends downward along the sidewall of the cavity, and the block is inserted into a grounding hole reserved on the feeding circuit board.
3. The phase-shifting feed device of an array antenna according to claim 1, wherein the phase-shifting circuit board is provided with phase-shifting circuits on two surfaces thereof, and the phase-shifting circuits are continuous folded lines.
4. The array antenna phase-shifting feed device of claim 3, wherein one end of the phase-shifting circuit board is bent to form a connecting portion, two pins are configured on the connecting portion, the phase-shifting circuit is U-shaped, and the input end and the output end of the phase-shifting circuit are connected with the corresponding pins.
5. The array antenna phase-shift feeding device according to claim 4, wherein the top and the bottom of the cavity are respectively provided with an elongated slot, the elongated slots penetrate through the front end and the rear end of the cavity, the phase-shift circuit board is clamped in the two elongated slots which are oppositely arranged, one end of the bottom of the elongated slot is provided with a limiting slot, and the connecting part is clamped in the limiting slot.
6. The array antenna phase-shift feeding device according to any one of claims 1 to 5, wherein one of the dielectric sheets is provided with a locking pin, the other dielectric sheet is provided with a locking slot, the phase-shift circuit board is provided with a sliding slot, the length of the sliding slot is greater than the stroke of the phase shifter, and the locking pin passes through the sliding slot and is locked in the locking slot.
7. The array antenna phase-shifting feeding device of any one of claims 1 to 5, wherein a plurality of protrusions are disposed on one side of each dielectric sheet away from the phase-shifting circuit board, and each protrusion abuts against an inner wall of the cavity.
8. The array antenna phase-shifting feeding device of claim 1, wherein a feeding network is disposed on the feeding circuit board, and the cavity and the feeding network are located on the same side of the feeding circuit board.
9. The array antenna phase shift feeding device according to claim 1 or 8, wherein the phase shift circuit board is perpendicular to the feeding circuit board.
10. An array antenna comprising the array antenna phase shift feeding apparatus according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757570.0A CN112003017B (en) | 2020-07-31 | 2020-07-31 | Phase-shifting feed device of array antenna and array antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010757570.0A CN112003017B (en) | 2020-07-31 | 2020-07-31 | Phase-shifting feed device of array antenna and array antenna |
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| CN112003017A true CN112003017A (en) | 2020-11-27 |
| CN112003017B CN112003017B (en) | 2023-04-14 |
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| CN112787053A (en) * | 2021-01-12 | 2021-05-11 | 上海安费诺永亿通讯电子有限公司 | Phase shifter and antenna |
| WO2023044234A1 (en) * | 2021-09-14 | 2023-03-23 | Commscope Technologies Llc | Housing for cavity phase shifter, cavity phase shifter and base station antenna |
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| WO2023044234A1 (en) * | 2021-09-14 | 2023-03-23 | Commscope Technologies Llc | Housing for cavity phase shifter, cavity phase shifter and base station antenna |
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| Publication number | Publication date |
|---|---|
| CN112003017B (en) | 2023-04-14 |
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