CN115842228A - Antenna device and phase shifter - Google Patents
Antenna device and phase shifter Download PDFInfo
- Publication number
- CN115842228A CN115842228A CN202211713037.XA CN202211713037A CN115842228A CN 115842228 A CN115842228 A CN 115842228A CN 202211713037 A CN202211713037 A CN 202211713037A CN 115842228 A CN115842228 A CN 115842228A
- Authority
- CN
- China
- Prior art keywords
- cavity
- phase
- phase compensation
- compensation circuit
- phase shifter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
The present invention relates to an antenna device and a phase shifter, the phase shifter includes: the phase-shifting circuit board comprises a first cavity, a phase-shifting circuit board, a second cavity and a phase compensation assembly. The phase-shifting circuit board is arranged in the first cavity. The second cavity is arranged on the side surface of the first cavity. The phase compensation assembly comprises a phase compensation circuit arranged in the second cavity, the phase compensation circuit forms an air coaxial line and/or an air microstrip line in the second cavity, one end of the phase compensation circuit is electrically connected with the output port of the phase-shifting circuit board, and the other end of the phase compensation circuit is electrically connected with the coaxial cable or the antenna oscillator. The phase compensation component can be used for realizing the phase compensation of the phase shifter, so that the purpose of reducing the length of the coaxial cable or even omitting the coaxial cable is achieved, and the loss is reduced; in addition, the phase compensation circuit can be used for adjusting impedance, so that impedance matching between the phase shifter and the antenna oscillator is realized, phase compensation is more flexible and reliable, and cost is lower.
Description
Technical Field
The present application relates to the field of antenna technology, and in particular, to an antenna device and a phase shifter.
Background
The phase shifter is a core component of the antenna of the mobile communication base station, and the performance of the phase shifter directly affects the performance of the antenna, thereby affecting the effect of network coverage. The conventional phase shifter generally adopts a coaxial cable to realize the connection between a plurality of output ports and a plurality of antenna oscillators, the length of the coaxial cable firstly needs to meet the reference length required by the connection, and secondly, the phase of each output port of the phase shifter needs to meet the specific requirements of array shaping design.
In the conventional technology, the phase difference of each output port of the phase shifter is large, and the phase compensation cable of a specific output port is long, for example, in each antenna element connected to the same phase shifter, the antenna element located in the middle of the phase shifter is closer to the phase shifter, which results in that the corresponding output port of the phase shifter needs to adopt a longer cable to be connected with the antenna element in a matching manner. The problems of more cables and longer cables of the phase shifter further increase the feed loss, and cause the problems of difficult wiring, difficult wiring operation, easy misconnection of antenna oscillator/oscillator polarization of the feed cable of the phase shifter and the like. In addition, the phase shifter and the antenna oscillator are generally used as general parts in the base station antenna, the impedance matching of the whole antenna after shaping is generally adjusted by cables with different lengths, the method is less, and the condition of poor impedance matching often occurs in a complex antenna, so that the product performance is reduced, and the cost is increased.
Disclosure of Invention
Based on this, it is necessary to overcome the defects of the prior art, and provide an antenna device and a phase shifter, which can implement phase compensation and impedance matching of the phase shifter, reduce the length of a coaxial cable, even omit the coaxial cable, and greatly shorten the connection distance between a phase shift circuit and an antenna oscillator, thereby reducing feed loss and wiring difficulty, and being beneficial to high-efficiency, low-cost and large-scale application.
The technical scheme is as follows: a phase shifter, comprising:
a first cavity;
the phase-shifting circuit board is arranged inside the first cavity;
the second cavity is arranged on the side surface of the first cavity;
the phase compensation assembly comprises a phase compensation circuit arranged in the second cavity, the phase compensation circuit forms at least one of an air coaxial line, an air microstrip line and an air strip line in the second cavity, one end of the phase compensation circuit is electrically connected with the output port of the phase-shifting circuit board, and the other end of the phase compensation circuit is electrically connected with a coaxial cable or an antenna oscillator.
In one embodiment, the second cavity comprises a third cavity with a closed periphery, the phase compensation circuit is arranged in the third cavity in a penetrating manner and forms an air strip line or an air coaxial line in the third cavity; and/or the presence of a gas in the gas,
the second cavity comprises a first groove body, and the phase compensation circuit is arranged in the first groove body in a penetrating mode and forms an air microstrip line in the first groove body.
In one embodiment, the phase compensation assembly further comprises a first media support disposed between the phase compensation circuit and the third cavity to support and space the phase compensation circuit from the third cavity.
In one embodiment, the phase compensation assembly further includes a second dielectric support member disposed between the phase compensation circuit and the first slot to support the phase compensation circuit and separate the phase compensation circuit from the first slot.
In one embodiment, the number of the third cavities is two, the two third cavities are arranged in parallel, the phase compensation circuit includes two conducting rods arranged at intervals and an electrical connecting rod connecting the two conducting rods, the two conducting rods are respectively inserted into the two third cavities, and the electrical connecting rod is located outside the third cavities.
In one embodiment, the two conductive bars are integrally formed with the electrical connection bar.
In one embodiment, the phase compensation circuit includes two conducting rods arranged at intervals and an electrical connecting rod connecting the two conducting rods, and the two conducting rods and the electrical connecting rod are all inserted into the same third cavity; the axial section of the third cavity is in an elliptical shape or a waist shape.
In one embodiment, the second cavity further comprises a second groove body, the second groove body is connected with a side wall of a third cavity far away from the first cavity, the second groove body is provided with a welding groove, the extending direction of the welding groove is the same as that of the third cavity, and the welding groove is used for fixedly welding the outer conductor of the coaxial cable.
In one embodiment, the first cavity and the second cavity are of a unitary structure.
In one embodiment, one end of the phase compensation circuit penetrates through the first cavity and extends into the first cavity to be connected with an output port of the phase-shifting circuit board in a welding mode; or the output end of the phase-shifting circuit board extends out of the first cavity and is connected with the phase compensation circuit in the second cavity.
In one embodiment, one end of the phase compensation circuit is provided with a first bending part, and the first bending part is used for extending into the first cavity and being connected with an output port of the phase-shifting circuit board in a welding manner; the other end of the phase compensation circuit is provided with a second bending part, and the second bending part is electrically connected with the inner core of the coaxial cable.
In one embodiment, the phase shift circuit board further integrates at least one of a power sub-circuit, a filter circuit and a combiner circuit.
An antenna device comprises the phase shifter and an antenna element, wherein the antenna element is electrically connected with the phase compensation circuit.
According to the antenna device and the phase shifter, the phase compensation component is additionally arranged between the output port of the phase shifting circuit board and the antenna oscillator, so that the phase compensation of the phase shifter can be realized by utilizing the phase compensation component, a long cable between the phase shifter and the antenna oscillator in the traditional scheme is replaced, the connection distance between the phase shifting circuit and the antenna oscillator is greatly shortened, the phase shifter can be connected with the antenna oscillator by adopting a short cable or even a cable-free connection, and the feed loss, wiring and wiring difficulty are greatly reduced; moreover, the impedance can be adjusted by utilizing the phase compensation circuit, so that the impedance matching between the phase shifter and the antenna oscillator is realized, and the phase compensation is more flexible and reliable; in addition, the phase compensation assembly and the phase-shifting circuit board can be assembled in a modularized manner in the cavity, and efficient, low-cost and large-scale application is facilitated.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application, and the description of the exemplary embodiments of the application are intended to be illustrative of the application and are not intended to limit the application.
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view illustrating a phase shifter according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of FIG. 1 at A;
FIG. 3 is an enlarged schematic view of FIG. 1 at B;
FIG. 4 is a schematic diagram of the structure of the chamber in the structure of FIG. 1;
FIG. 5 is a schematic diagram of a phase compensation circuit according to an embodiment of the present invention;
FIG. 6 is a schematic view illustrating a phase shifter according to another embodiment of the present invention;
FIG. 7 is a view in elevation of the structure of FIG. 6;
FIG. 8 is a schematic diagram of the structure of the chamber in the structure of FIG. 6;
FIG. 9 is a schematic view illustrating a phase shifter according to another embodiment of the present invention;
FIG. 10 is a schematic diagram of the structure of the chamber in the structure of FIG. 9;
FIG. 11 is a schematic diagram of a phase compensation circuit according to another embodiment of the present invention;
FIG. 12 is a schematic diagram of a phase shifter according to another embodiment of the present invention;
fig. 13 is a schematic structural view of the cavity in the structure shown in fig. 12.
10. A first cavity; 11. an operation hole; 20. a second cavity; 21. a third cavity; 22. a first tank body; 23. a second tank body; 30. a phase compensation component; 31. a phase compensation circuit; 311. a conductive rod; 312. an electrical connection rod; 32. a first media support; 33. a second media support; 34. a first curved portion; 35. a second curved portion; 40. a coaxial cable; 50. a third trough body.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiment in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and therefore the application is not limited to the specific embodiments disclosed below.
Referring to fig. 1 to 5, fig. 1 shows a view-angle structure diagram of a phase shifter according to an embodiment of the present invention, fig. 2 shows an enlarged structure diagram of fig. 1 at a, fig. 3 shows an enlarged structure diagram of fig. 1 at B, fig. 4 shows a cavity structure diagram in the structure shown in fig. 1, and fig. 5 shows a structure diagram of a phase compensation circuit 31 according to an embodiment of the present invention. An embodiment of the present application provides a phase shifter, which includes: the phase-shifting circuit board comprises a first cavity 10, a phase-shifting circuit board, a second cavity 20 and a phase compensation assembly 30. The phase shift circuit board is arranged inside the first cavity 10. The second cavity 20 is disposed on a side surface of the first cavity 10, where the side surface refers to any surface around the first cavity 10, in other words, the side surface may be a left side surface and a right side surface of the first cavity 10 as shown in fig. 1 to 4, or may be an upper side surface and a lower side surface of the first cavity 10, which is not limited herein and may be flexibly adjusted and disposed according to actual requirements. In addition, the phase compensation assembly 30 includes a phase compensation circuit 31 disposed in the second cavity 20, the phase compensation circuit 31 forms at least one of an air coaxial line, an air microstrip line and an air strip line in the second cavity 20, one end of the phase compensation circuit 31 is electrically connected to the output port of the phase shift circuit board, and the other end of the phase compensation circuit 31 is used for electrically connecting to the coaxial cable 40 or an antenna element (not shown in the figure).
In the phase shifter, the phase compensation assembly 30 is additionally arranged between the output port of the phase shifting circuit board and the antenna oscillator, so that the phase compensation of the phase shifter can be realized by utilizing the phase compensation assembly 30, a long cable between the phase shifter and the antenna oscillator in the traditional scheme is replaced, the connection distance between the phase shifting circuit board and the antenna oscillator is greatly shortened, the phase shifter can be connected with the antenna oscillator by adopting a short cable or even a cable-free connection, and the feed loss, wiring and wiring difficulty are greatly reduced; in addition, the phase compensation circuit 31 can be used for adjusting impedance, so that impedance matching between the phase shifter and the antenna oscillator is realized, and the phase compensation is more flexible and reliable; in addition, the phase compensation assembly 30 and the phase shift circuit board can be modularly assembled in the first cavity 10 and the second cavity 20, and are beneficial to high-efficiency, low-cost and large-scale application.
Referring to fig. 1 to 5, in one embodiment, the second cavity 20 includes a third cavity 21 enclosed on the periphery. The phase compensation circuit 31 is inserted into the third cavity 21, and an air strip line or an air coaxial line is formed in the third cavity 21. In this way, the phase compensation circuit 31 is inserted into the third cavity 21 and forms an air space with the inner wall of the third cavity 21, so that the phase compensation circuit 31 and the third cavity 21 are combined to form an air strip line or an air coaxial line, and compared with a conventional cable, the air strip line or the air coaxial line has lower loss. In addition, the air strip line or the air coaxial line plays a role in signal transmission, phase compensation and impedance matching, and the purpose of reducing the length of the coaxial cable 40 or even omitting the coaxial cable 40 is achieved.
It should be noted that, the enclosed periphery means that, when viewed along the length direction of the third cavity 21 (i.e. the direction indicated by the double-headed arrow L in fig. 1), the side wall of the third cavity 21 is a full-circle wall body formed by continuously surrounding 360 °, the wall body encloses to form a through hole, and the phase compensation circuit 31 is disposed through the through hole.
Referring to fig. 9 to 11, fig. 9 is a schematic view structure of a phase shifter according to another embodiment of the present invention, fig. 10 is a schematic view of a cavity structure in the structure shown in fig. 9, and fig. 11 is a schematic view of a phase compensation circuit 31 according to another embodiment of the present invention. In one embodiment, the second cavity 20 includes a first slot 22, and the first slot 22 is a semi-open cavity. The phase compensation circuit 31 is inserted into the first slot 22, and forms an air microstrip line in the first slot 22. Thus, the phase compensation circuit 31 is inserted into the first slot 22 and forms an air gap with the inner wall of the first slot 22, so that the phase compensation circuit 31 and the first slot 22 form an air microstrip line, and compared with a conventional cable, the loss of the air microstrip line is lower. In addition, the air microstrip line plays a role in signal transmission, phase compensation and impedance matching, and the purpose of reducing the length of the coaxial cable 40 or even omitting the coaxial cable 40 is achieved.
Referring to fig. 12 and 13, fig. 12 is a schematic structural diagram of a phase shifter according to another embodiment of the invention, and fig. 13 is a schematic structural diagram of a cavity in the structure shown in fig. 12. Optionally, when the second cavity 20 includes both the third cavity 21 connected to the first cavity 10 and the first slot 22 connected to the first cavity 10, the third cavity 21 is specifically located between the first cavity 10 and the first slot 22, and the phase compensation circuit 31 sequentially penetrates through the first slot 22 and the third cavity 21. The phase compensation circuit 31 is arranged in the first slot 22 in a penetrating manner, and an air microstrip line is formed in the first slot 22, so that the phase compensation circuit 31 and the first slot 22 are combined to form the air microstrip line; in addition, the phase compensation circuit 31 is further disposed through the third cavity 21, and an air strip line or an air coaxial line is formed in the third cavity 21, so that the phase compensation circuit 31 and the third cavity 21 are combined to form the air strip line or the air coaxial line. Therefore, on one hand, the air microstrip line, the air stripline and the air coaxial line play the roles of signal transmission, phase compensation and impedance matching; on the other hand, under the serial connection of the air microstrip line, the air strip line and the air coaxial line, the length of the transmission line is long enough, so that the purpose of reducing the length of the coaxial cable 40 or even omitting the coaxial cable 40 can be achieved, and the loss is reduced.
Referring to fig. 1-5, in one embodiment, the phase compensation assembly 30 further includes at least one first medium supporting member 32. The first medium supporting member 32 is disposed between the phase compensation circuit 31 and the third cavity 21 to support the phase compensation circuit 31 and separate the phase compensation circuit 31 from the third cavity 21. Thus, the first medium supporting member 32 supports the phase compensation circuit 31, and an annular space is formed between the circumference of the phase compensation circuit 31 and the inner wall of the third cavity 21, so as to prevent the phase compensation circuit 31 and the third cavity 21 from being electrically contacted with each other to cause a short circuit.
Optionally, the first medium supporting member 32 includes, but is not limited to, a first sleeve body, the first sleeve body is fixed on the inner wall of the third cavity 21 by, for example, bonding, riveting, clamping, and the like, and the phase compensation circuit 31 is disposed in the through hole of the first sleeve body.
Optionally, the axial cross-sections of the third cavity 21, the first sleeve body, each include, but are not limited to, a circular surface, an elliptical surface, a polygonal surface, or other regular shape and irregular shape.
In a specific embodiment, the axial cross section of the third cavity 21 is a circular surface, the axial cross section of the first sleeve body is a circular surface, and the first sleeve body and the third cavity 21 are coaxially arranged, so that the interval between the phase compensation circuit 31 and the inner wall of the third cavity 21 is kept consistent along the circumferential direction, thereby being beneficial to improving the transmission performance of the air coaxial line.
Alternatively, the first medium supporter 32 is not limited to one, and is provided in plural, for example, and the plural first medium supporters 32 are provided inside the third cavity 21 at intervals along the extending direction of the third cavity 21, so that it is possible to stably support the phase compensation circuit 31.
Referring to fig. 9 to 11, in an embodiment, the phase compensation assembly 30 further includes a second medium supporting member 33, and the second medium supporting member 33 is disposed between the phase compensation circuit 31 and the first slot 22 to support the phase compensation circuit 31 and separate the phase compensation circuit 31 from the first slot 22. Thus, the second medium supporting member 33 supports the phase compensation circuit 31, and a gap is formed between the circumferential direction of the phase compensation circuit 31 and the inner wall of the first slot 22, so as to prevent the phase compensation circuit 31 and the inner wall of the first slot 22 from being electrically contacted with each other to cause a short circuit.
Optionally, the second medium supporting member 33 includes, but is not limited to, a second sleeve body, the second sleeve body is fixed on the inner wall of the first slot body 22 by, for example, bonding, riveting, clipping, etc., and the phase compensating circuit 31 is disposed in the through hole of the second sleeve body.
As some optional solutions, the first medium support 32 and the second medium support 33 are not limited to be sleeves, and the first medium support 32 and the second medium support 33 can also be flexibly adjusted and configured into spacers in various shapes according to actual requirements. As an example, a bayonet is provided on the pad, and the phase compensating circuit 31 is quickly locked and fixed by the bayonet of the pad, so that the circumferential direction of the phase compensating circuit 31 forms a space with the inner wall of the first groove body 22.
Alternatively, the axial cross-sections of the third cavity 21, the first sleeve body, each include, but are not limited to, circular, elliptical, polygonal, or other regular and irregular shapes.
In a specific embodiment, the axial cross section of the third cavity 21 is a circular surface, the axial cross section of the first sleeve body is a circular surface, and the first sleeve body and the third cavity 21 are coaxially arranged, so that the interval between the phase compensation circuit 31 and the inner wall of the third cavity 21 is kept consistent along the circumferential direction, thereby being beneficial to improving the transmission performance of the air coaxial line.
Alternatively, the second medium supporting member 33 is not limited to one, and is provided in plural, for example, and the plural second medium supporting members 33 are provided inside the first tank body 22 at intervals in the extending direction of the first tank body 22, so that it is possible to realize stable support of the phase compensating circuit 31.
Referring to fig. 1 to 5, in an embodiment, there are two third cavities 21, two third cavities 21 are disposed in parallel, the phase compensation circuit 31 includes two conductive rods 311 disposed at intervals and an electrical connection rod 312 connected to the two conductive rods 311, the two conductive rods 311 are respectively disposed in the two third cavities 21, and the electrical connection rod 312 is located outside the third cavities 21.
Specifically, the conductive rod 311 is, for example, a metal rod, and the cross section of the conductive rod 311 includes, but is not limited to, various regular shapes and irregular shapes such as a circle, an ellipse, and a polygon. In addition, the electrical connection rod 312 includes, but is not limited to, a straight rod or a bent rod. The two conductive bars 311 and the electrical connection bar 312 are combined to form a U-shape, for example.
In one embodiment, the two conductive rods 311 and the electrical connection rod 312 are an integral structure, and are obtained by various methods including, but not limited to, bending, welding, forging, and the like, and the specific manufacturing method can be flexibly adjusted and arranged according to actual requirements, and is not limited herein.
In a specific embodiment, the cross section of the conductive rod 311 is, for example, circular, the axial cross section of the third cavity 21 is correspondingly circular, and the conductive rod 311 and the third cavity 21 are coaxially arranged, so that the interval between the phase compensation circuit 31 and the inner wall of the third cavity 21 can be kept consistent along the circumferential direction, which can be beneficial to improving the transmission performance of the air coaxial line.
Optionally, the impedance of the air coaxial line formed by combining the conductive rod 311 and the third cavity 21 is typically 50 Ω, for example, and may be adjusted to other impedances according to matching requirements, or may be configured as multiple lines with different diameters or widths, so as to implement impedance matching between the phase shifter and the antenna element.
Optionally, the length of the phase compensation circuit 31, that is, the size of a path through which an electrical signal is transmitted from one end to the other end thereof, may be flexibly adjusted and set to different lengths according to actual phase compensation requirements; in addition, the lengths of the two conducting rods 311 may be the same or different, and the two conducting rods may be used for adjusting the position of the output port of the phase shifter, so that the position of the output port is closer to the antenna element.
Referring to fig. 6 to 8, fig. 6 is a schematic view structure diagram of a phase shifter according to another embodiment of the present invention, fig. 7 is a schematic view structure diagram of the structure shown in fig. 6, and fig. 8 is a schematic view of a cavity structure in the structure shown in fig. 6. In one embodiment, the phase compensation circuit 31 includes two conductive bars 311 disposed at intervals and an electrical connection bar 312 connecting the two conductive bars 311. The two conductive rods 311 and the electrical connection rod 312 are all disposed in the same third cavity 21. The axial cross section of the third cavity 21 is elliptical or kidney-shaped. Thus, on the one hand, since the phase compensation circuits 31 are all installed in the third cavity 21, assembly can be facilitated; on the other hand, the two conductive rods 311 and the electrical connection rod 312 are located in the third cavity 21, so that impedance matching is easier compared to the way of exposing the electrical connection rod 312 to the third cavity 21. In addition, since the axial cross section of the third cavity 21 is elliptical or kidney-shaped, that is, the axial cross section is equivalent to an integral cavity structure formed by removing the middle wall of two third cavities 21 in the structures shown in fig. 1 to 4, so that the two conductive rods 311 can be better adapted and accommodated, and thus the interval between the phase compensation circuit 31 and the inner wall of the third cavity 21 can be kept consistent along the circumferential direction, which is favorable for improving the transmission performance of the air coaxial line.
Referring to fig. 1 to 5 or fig. 6 to 8, in an embodiment, the second cavity 20 further includes a second groove 23. The second groove body 23 is connected with the side wall of the third cavity 21 far away from the first cavity 10, the second groove body 23 is provided with a welding groove, the extending direction of the welding groove is the same as that of the third cavity 21, and the welding groove is used for welding and fixing the outer conductor of the coaxial cable 40. So, because first cavity 10, third cavity 21 and second cell body 23 interconnect are in the same place, the three sets up altogether, with coaxial cable 40's outer conductor and second cell body 23 welded fastening back for coaxial cable 40's outer conductor ground connection, coaxial cable 40's installation operation is comparatively convenient and fast like this.
Optionally, the cross-sectional shapes of the first groove 22 and the second groove 23 include, but are not limited to, various regular shapes and irregular shapes such as a semi-circle, a semi-ellipse, and the like, and may be flexibly adjusted and arranged according to actual requirements, which is not limited herein. Specifically, the concave surfaces of the first and second grooves 22 and 23 are adapted to the outer wall of the coaxial cable 40, so that the outer conductor of the coaxial cable 40 is stably welded in the first and second grooves 22 and 23.
In one embodiment, the first cavity 10, the third cavity 21, and the first groove 22 are of an integrated structure; or the first cavity 10, the third cavity 21 and the second groove 23 are integrated.
Optionally, the first cavity 10, the third cavity 21 and the first groove 22 are respectively of a metalized structure, and are formed by integral pultrusion.
Optionally, the first cavity 10, the third cavity 21 and the second groove 23 are respectively of a metalized structure, and are formed by pultrusion integrally.
In a specific embodiment, there is one third cavity 21, the third cavity 21 is connected to the first cavity 10, and the first groove 22 is connected to the third cavity 21. The phase compensation circuit 31 includes two conductive rods 311 disposed at intervals and an electrical connection rod 312 connecting the two conductive rods 311. One of the conductive rods 311 is inserted into the third cavity 21 and is fixedly connected with the inner wall of the third cavity 21 through the first dielectric support 32 to form an air coaxial line; the other conducting rod 311 is inserted into the first slot 22, and is fixedly connected to the inner wall of the third cavity 21 through the second dielectric support 33, so as to form an air microstrip line. In addition, one end of one of the conductive rods 311 extends into the first cavity 10 to be electrically connected to the output port of the phase shift circuit board, and one end of the other conductive rod 311 is electrically connected to the coaxial cable 40 or the antenna element. The outer conductor of the coaxial cable 40 is fixed by welding in the first groove 22. Therefore, compared with the structural form of arranging the two third cavities 21, the mold opening difficulty of the cavities is reduced, and the size of the cavities is reduced.
Referring to fig. 9 to 11, in a specific embodiment, the third cavity 21 is omitted, the first cavity 10 is directly connected to the first slot 22, and the phase compensation circuit 31 includes a conductive rod 311, the conductive rod 311 is inserted into the first slot 22, that is, only the first slot 22 is used to place the phase compensation circuit 31. Specifically, the conductive rod 311 is L-shaped, one end of which is electrically connected to the output port of the phase shift circuit board inside the first cavity 10, and the other end of which is connected to the coaxial cable 40. Therefore, on one hand, the first slot 22 is used as the ground of the conductive rod 311 to form an air microstrip line, so as to realize the phase compensation of the phase shifter, and achieve the purpose of reducing the length of the coaxial cable 40 or even omitting the coaxial cable 40, so that the loss is reduced; on the other hand, the function of welding and fixing the coaxial cable 40 is achieved; in addition, the phase compensation circuit 31 arranged in the first slot 22 is unidirectional, which causes the welding points on both sides (the welding point of the coaxial cable 40 and the welding point of the phase shift circuit) to be far away; in some cases, when the output port of the phase shifter is far away from the antenna element, the mode can shorten the compensation length instead, so that the structure is simplified.
Of course, this method has a simple structure, and has the disadvantages that the soldering point of the coaxial cable 40 and the soldering point of the phase shift circuit are farther away as the phase compensation circuit 31 is lengthened, the position of the output port is not flexible, and in addition, the length of the phase compensation circuit 31 is limited, and when the phase difference of each output port of the phase shift circuit board is larger, there may be no way to balance the phase.
In one embodiment, one end of the phase compensation circuit 31 extends into the first cavity 10 through the first cavity 10 and is connected with the output port of the phase-shifting circuit board by welding; alternatively, the output end of the phase-shifting circuit board extends out of the first cavity 10 and is connected with the phase compensation circuit 31 in the second cavity 20.
Optionally, an operation hole 11 is disposed on a side wall of the first cavity 10, and is opposite to the output port of the phase shift circuit board.
Referring to fig. 2, in an embodiment, one end of the phase compensation circuit 31 is provided with a first bending portion 34, and the first bending portion 34 is used for extending into the first cavity 10 to be connected with an output port of the phase shift circuit board by welding; the other end of the phase compensation circuit 31 is provided with a second bending portion 35, and the second bending portion 35 is electrically connected to the inner core of the coaxial cable 40. In this way, by providing the first bent portion 34, it is possible to facilitate the implementation of the welding connection of the one end of the phase compensating circuit 31 and the output port of the phase shift circuit board, and in addition, by providing the second bent portion 35, it is possible to facilitate the implementation of the welding connection of the second bent portion 35 and the inner core of the coaxial cable 40 to each other.
In one embodiment, the output port of the phase shift circuit board is one or more and is located at the side of the first cavity 10. In this way, the welding operation of the output port and the phase compensation circuit 31 located at the side of the first cavity 10 can be facilitated.
In one embodiment, the phase shift circuit board further integrates at least one of a power sub-circuit, a filter circuit and a combiner circuit. Therefore, complete integration of the phase-shifting feed network can be further realized, the phase-shifting circuit board and the phase compensation circuit are assembled in the first cavity 10 and the second cavity 20 of the phase shifter in a modularized manner, and the phase compensation circuit realizes phase compensation and simultaneously replaces a traditional long cable to greatly shorten the connection distance between the phase shifter and the antenna oscillator.
In one embodiment, the phase shifter further comprises a dielectric plate movably disposed through the interior of the first cavity 10. Thus, the phase can be adjusted by moving the dielectric plate.
In one embodiment, an antenna device includes the phase shifter of any of the above embodiments, and further includes an antenna element, and the antenna element is electrically connected to the phase compensation circuit 31.
In the antenna device, the phase compensation assembly 30 is additionally arranged between the output port of the phase-shifting circuit board and the antenna oscillator, so that the phase compensation of the phase shifter can be realized by using the phase compensation assembly 30, the purpose of reducing the length of the coaxial cable 40 or even omitting the coaxial cable 40 is achieved, the connection distance between the phase-shifting circuit board and the antenna oscillator is greatly shortened, and the feeding loss, the wiring difficulty and the wiring difficulty are favorably reduced; in addition, the phase compensation circuit 31 can be used for adjusting impedance, so that impedance matching between the phase shifter and the antenna oscillator is realized, and the phase compensation is more flexible and reliable; in addition, the phase compensation assembly 30 and the phase shift circuit board can be assembled in the first cavity 10 and the second cavity 20 in a modularized manner, which is beneficial to high-efficiency, low-cost and large-scale application.
Specifically, the antenna elements are plural and arranged in an array. The antenna elements are correspondingly connected with the output ports of the phase shifter respectively. At least one phase compensation assembly 30 is arranged in the phase shifter, or a plurality of phase compensation assemblies 30 corresponding to a plurality of antenna elements one to one may be arranged, and the phase shifter may be flexibly adjusted and arranged according to actual requirements, which is not limited herein. The phase shifter does not need to be provided with a phase compensation component 30 at the output port where phase compensation is not needed, for example, a third groove 50 is reserved at a position on the side wall of the first cavity 10 corresponding to the output port where the phase compensation component 30 is not needed, the second cavity 20 is not needed, and the outer conductor of the coaxial cable 40 is fixed by welding through the reserved third groove 50.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Claims (13)
1. A phase shifter, comprising:
a first cavity;
the phase-shifting circuit board is arranged inside the first cavity;
the second cavity is arranged on the side surface of the first cavity;
the phase compensation assembly comprises a phase compensation circuit arranged in the second cavity, the phase compensation circuit forms at least one of an air coaxial line, an air microstrip line and an air strip line in the second cavity, one end of the phase compensation circuit is electrically connected with the output port of the phase-shifting circuit board, and the other end of the phase compensation circuit is electrically connected with a coaxial cable or an antenna oscillator.
2. The phase shifter as claimed in claim 1, wherein the second cavity comprises a third cavity enclosed all around, the phase compensation circuit is inserted into the third cavity and forms an air strip line or an air coaxial line in the third cavity; and/or the presence of a gas in the gas,
the second cavity comprises a first groove body, and the phase compensation circuit is arranged in the first groove body in a penetrating mode and forms an air microstrip line in the first groove body.
3. The phase shifter of claim 2, wherein the phase compensation assembly further comprises a first dielectric support disposed between the phase compensation circuit and the third cavity to support and space the phase compensation circuit from the third cavity.
4. The phase shifter of claim 2, wherein the phase compensation assembly further comprises a second dielectric support disposed between the phase compensation circuit and the first slot to support and space the phase compensation circuit from the first slot.
5. The phase shifter according to claim 2, wherein there are two third cavities, two of the third cavities are disposed side by side, the phase compensation circuit includes two conductive rods disposed at intervals and an electrical connection rod connecting the two conductive rods, the two conductive rods are respectively inserted into the two third cavities, and the electrical connection rod is located outside the third cavities.
6. Phase shifter as in claim 5, characterized in that two of said conducting rods are integrally formed with said electrical connecting rod.
7. The phase shifter according to claim 2, wherein the phase compensation circuit comprises two conductive rods arranged at intervals and an electrical connection rod connecting the two conductive rods, and both the two conductive rods and the electrical connection rod are inserted into the same third cavity; the axial section of the third cavity is in an elliptical shape or a waist shape.
8. The phase shifter as claimed in claim 2, wherein the second cavity further comprises a second groove connected to a side wall of a third cavity far from the first cavity, the second groove having a welding groove extending in a same direction as the third cavity, the welding groove being used for welding and fixing the outer conductor of the coaxial cable.
9. The phase shifter of claim 1, wherein the first cavity and the second cavity are a unitary structure.
10. The phase shifter of claim 1, wherein one end of the phase compensation circuit extends into the first cavity through the first cavity and is connected with an output port of the phase shifting circuit board in a welding manner; or the output end of the phase-shifting circuit board extends out of the first cavity and is connected with the phase compensation circuit in the second cavity.
11. The phase shifter of claim 10, wherein one end of the phase compensation circuit is provided with a first bent portion, and the first bent portion is used for extending into the first cavity and being connected with an output port of the phase shifting circuit board in a welding manner; the other end of the phase compensation circuit is provided with a second bending part, and the second bending part is electrically connected with the inner core of the coaxial cable.
12. The phase shifter according to any one of claims 1 to 11, wherein at least one of a power dividing circuit, a filter circuit and a combining circuit is further integrated on the phase shifting circuit board.
13. An antenna device, characterized in that the antenna device comprises the phase shifter according to any one of claims 1 to 12, and further comprises an antenna element, the antenna element being electrically connected to the phase compensation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211713037.XA CN115842228B (en) | 2022-12-30 | 2022-12-30 | Antenna device and phase shifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211713037.XA CN115842228B (en) | 2022-12-30 | 2022-12-30 | Antenna device and phase shifter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115842228A true CN115842228A (en) | 2023-03-24 |
| CN115842228B CN115842228B (en) | 2023-05-26 |
Family
ID=85577576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211713037.XA Active CN115842228B (en) | 2022-12-30 | 2022-12-30 | Antenna device and phase shifter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115842228B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106067577A (en) * | 2016-05-24 | 2016-11-02 | 武汉虹信通信技术有限责任公司 | A kind of dielectric phase shifter in novel conduction chamber |
| CN107579313A (en) * | 2017-08-28 | 2018-01-12 | 广州司南天线设计研究所有限公司 | One kind is exempted to electroplate, the phaser cavity structure of no-welding |
| CN206992306U (en) * | 2017-04-28 | 2018-02-09 | 广州司南天线设计研究所有限公司 | A kind of 10 oscillator space solid phase shifters and its component for antenna for base station |
| CN207368177U (en) * | 2017-11-16 | 2018-05-15 | 深圳国人通信股份有限公司 | A kind of antenna for base station broadband medium phase shifter |
| CN111952699A (en) * | 2020-08-31 | 2020-11-17 | 京信通信技术(广州)有限公司 | Phase shifter and antenna |
| CN213304370U (en) * | 2020-10-21 | 2021-05-28 | 京信通信技术(广州)有限公司 | Base station antenna and phase shifter thereof |
| WO2022133637A1 (en) * | 2020-12-21 | 2022-06-30 | 华为技术有限公司 | Antenna and communication device |
-
2022
- 2022-12-30 CN CN202211713037.XA patent/CN115842228B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106067577A (en) * | 2016-05-24 | 2016-11-02 | 武汉虹信通信技术有限责任公司 | A kind of dielectric phase shifter in novel conduction chamber |
| CN206992306U (en) * | 2017-04-28 | 2018-02-09 | 广州司南天线设计研究所有限公司 | A kind of 10 oscillator space solid phase shifters and its component for antenna for base station |
| CN107579313A (en) * | 2017-08-28 | 2018-01-12 | 广州司南天线设计研究所有限公司 | One kind is exempted to electroplate, the phaser cavity structure of no-welding |
| CN207368177U (en) * | 2017-11-16 | 2018-05-15 | 深圳国人通信股份有限公司 | A kind of antenna for base station broadband medium phase shifter |
| CN111952699A (en) * | 2020-08-31 | 2020-11-17 | 京信通信技术(广州)有限公司 | Phase shifter and antenna |
| CN213304370U (en) * | 2020-10-21 | 2021-05-28 | 京信通信技术(广州)有限公司 | Base station antenna and phase shifter thereof |
| WO2022133637A1 (en) * | 2020-12-21 | 2022-06-30 | 华为技术有限公司 | Antenna and communication device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115842228B (en) | 2023-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110692167B (en) | Dual-polarization radiating element, antenna, base station and communication system | |
| US10062939B2 (en) | Phase shifter of the cavity type including a feeding network, a slideable dielectric element and a transformation device, which are mounted within the cavity of the phase shifter | |
| US7692508B2 (en) | Spring loaded microwave interconnector | |
| CN212162087U (en) | Antenna device, phase-shift feeding device and phase shifter | |
| US20190044258A1 (en) | Cable connector block assemblies for base station antennas | |
| CN111817008B (en) | Phase shifter and base station antenna | |
| CN210692765U (en) | Phase-shift feeding device, radiation array and large-scale array antenna | |
| CN103339793A (en) | Coaxial waveguide tube converter, and ridge waveguide tube | |
| US20150042530A1 (en) | Antenna device | |
| CN101015090A (en) | Antenna comprising a connector assembly | |
| CN111478046B (en) | Base station antenna and feed network device | |
| CN113937489B (en) | Antenna unit and communication device | |
| CN114256577A (en) | Integrated antenna unit and base station antenna | |
| CN106299780A (en) | Radio frequency connection system between plate | |
| CN115842228A (en) | Antenna device and phase shifter | |
| CN115986372B (en) | Base station antenna | |
| EP3297092B1 (en) | Cable and high-frequency device using same | |
| CN112054275A (en) | Low-loss switching device of substrate integrated waveguide end feed antenna | |
| CN115775960A (en) | Antenna device, phase shifter and phase adjusting method thereof | |
| US20080242120A1 (en) | Right-Angle Coaxial Connector | |
| CN114678668A (en) | Antenna device and phase shifter | |
| KR100946178B1 (en) | Radio frequency connector | |
| CN2893962Y (en) | Balance matching balun apparatus for yagi-uda antenna | |
| JP3484661B2 (en) | Coaxial low-pass filter | |
| CN216597917U (en) | Phase shifter cavity assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |