CN117477216A - Coupling feed low frequency vibrator and array antenna - Google Patents

Abstract

The application relates to a coupling feed low-frequency oscillator and an array antenna, wherein the coupling feed low-frequency oscillator comprises two radiating arms with the same polarization, a balun structure, a combining component and two feed components. The balun structures are respectively connected with the radiating arms. The combining component is arranged on the balun structure and is electrically connected with the feed network. The top end of each feed component is connected with a feed section which is correspondingly coupled with each radiation arm for feeding, the bottom end of each feed component is connected with a combining component for realizing combining, and each feed component is coupled with the balun structure for feeding. The feed section and the radiation arm are correspondingly coupled to feed to realize energy transmission, and each feed component is coupled to feed with the balun structure to improve impedance stability, namely, the feed sections are not assembled together by adopting welding connection, so that the electroplating area of the low-frequency oscillator of the coupling feed is greatly reduced or an electroplating process can be avoided, the welding point of the low-frequency oscillator of the coupling feed is reduced, and the manufacturing cost is reduced.

Description

Coupling feed low frequency vibrator and array antenna

Technical Field

The application relates to the technical field of antennas, in particular to a low-frequency oscillator and an array antenna for coupling feed.

Background

With the development of mobile communication networks, network systems have been developed into heterogeneous networks in which 4G/5G multiple systems coexist, and in order to be compatible with multiple communication systems, ultra-wideband antennas are widely used, so that system networking is more complex and the cost is higher; but energy conservation and emission reduction, low carbon and high efficiency are the requirements of the social and economic development on the field of mobile antennas. The radiating element, also called a vibrator, is used as a main core component of the base station antenna, and the performance of the radiating element directly influences the antenna performance, and further influences the network coverage quality, and the processing cost of the radiating element also directly influences the manufacturing cost of the antenna.

In the related art, the die-casting type vibrator can be divided into direct feeding and coupling feeding according to feeding modes, however, in a typical antenna adopting coaxial network feeding, no matter which feeding mode needs to be welded on the vibrator, so that the surface of the vibrator needs to be subjected to electroplating process treatment, and the electroplating requirement of a large area causes that the vibrator is difficult to meet the manufacturing requirement of green low carbon.

Disclosure of Invention

Based on this, it is necessary to overcome the defects of the prior art and provide a low frequency oscillator and an array antenna for coupling feed, which can reduce the electroplating area, reduce the welding spots, and meet the manufacturing requirements of green low carbon.

A low frequency oscillator of a coupling feed, the low frequency oscillator of the coupling feed comprising:

two radiating arms of the same polarization;

the balun structure is respectively connected with each radiation arm;

the combining component is arranged on the balun structure and is used for being electrically connected with a feed network; and

And the top ends of the two feed components are respectively connected with a feed section which is correspondingly coupled with the radiation arms for feeding, the bottom ends of the feed components are connected with the combining component to realize a combining circuit, and the feed components are respectively coupled with the balun structure for feeding.

In one embodiment, the balun structure comprises a base and at least two balun arms connected with the base; each balun arm is correspondingly connected with each radiation arm, and the combining part is arranged on the base or the balun arm.

In one embodiment, each balun arm and/or the base is provided with a groove corresponding to each feeding component position; the feed component is arranged in the groove corresponding to the position of the feed component in a penetrating way and is mutually insulated from the groove.

In one embodiment, when the balun arm and the base are each provided with a groove corresponding to the same position of the feeding member, the grooves on the balun arm and the grooves on the base are communicated with each other.

In one embodiment, the radiation arms are arranged in four pairs in a diagonal manner, and the two radiation arms arranged in a diagonal manner are arranged in the same polarization; the number of the balun arms is four, and the four balun arms are correspondingly connected with the four radiation arms; the number of the feed parts is four, and the four feed parts are arranged corresponding to the four radiation arms; the base is provided with four grooves which are respectively and correspondingly arranged with the four feed components; the grooves in one polarization direction and the grooves in the other polarization direction are arranged to intersect each other and have different depths.

In one embodiment, each of the balun arms comprises two balun single arms connected to the base, and each of the radiating arms comprises two radiating single arms; for the balun arms and the radiating arms which are correspondingly connected, two radiating single arms are correspondingly connected with two balun single arms, wherein one balun single arm is provided with a groove corresponding to the feeding part, and the radiating single arm connected with the other balun single arm is coupled with the feeding section for feeding.

In one embodiment, a first insulating medium piece is arranged on the outer wall of the power feeding component; the first insulating medium piece is arranged around the circumference of the power feeding component; the first insulating medium piece extends from one end of the power feeding component to the other end of the power feeding component, or the first insulating medium pieces are arranged in a plurality and are sequentially arranged at intervals along the extending direction of the power feeding component.

In one embodiment, at least one slit, a thinned area or a hollowed area is arranged at the bending position of the first insulating medium piece corresponding to the feeding component.

In one of the embodiments, the feed section and the radiating arm of its respective coupling feed extend in the same direction; and a gap is arranged between the feed section and the radiation arm of the corresponding coupling feed.

In one embodiment, each radiating arm is provided with a coupling slot, and each feeding section correspondingly penetrates through each coupling slot and is coupled with the slot wall of the coupling slot for feeding.

In one embodiment, a second insulating medium piece is arranged between the feed section and the radiating arm; the feed section is in a sheet shape or a plate shape, the second insulating medium piece is in a sheet shape or a plate shape, and the radiation arm, the second insulating medium piece and the feed section are sequentially overlapped.

In one embodiment, the feeding component and the corresponding feeding section are integrally formed; or the feed component is welded with the corresponding feed section.

In one embodiment, a hollow part corresponding to the combining component is arranged on the base of the balun structure, and the combining component is arranged in the hollow part through a third insulating medium piece; the combined component is of a weldable structure, and the bottom ends of the two power feeding components are welded with the combined component.

In one embodiment, the base of the balun structure is provided with a grounding pin, a solderable layer is arranged on the outer wall of the grounding pin, and the solderable layer of the grounding pin is in welded connection with a grounding conductor of the feed network.

In one embodiment, the balun structure is an integral structure with each of the radiating arms.

An array antenna, the array antenna includes a reflecting plate, at least one low-frequency coupled fed low-frequency oscillator arranged on the reflecting plate, each low-frequency coupled fed low-frequency oscillator is arranged as the coupled fed low-frequency oscillator, the array antenna also includes a low-frequency phase shifter arranged on the reflecting plate, the low-frequency phase shifter is provided with a feed network, and the combining component is electrically connected with the feed network of the low-frequency phase shifter; the array antenna further comprises at least one high-frequency coupled fed high-frequency oscillator arranged on the reflecting plate and a high-frequency phase shifter arranged on the reflecting plate, wherein the high-frequency phase shifter is provided with a feed network, and a high-frequency feed pin of the high-frequency coupled fed high-frequency oscillator is electrically connected with the feed network of the high-frequency phase shifter.

In one embodiment, the low-frequency vibrators of the low-frequency coupling feed are arranged in a plurality of arrays; the high-frequency oscillators of the high-frequency coupling feed are arranged in a plurality of arrays.

In one embodiment, the respective combining parts of the low frequency oscillators of each column of the low frequency coupling feed are arranged on a straight line and parallel to the longitudinal direction of the low frequency phase shifter.

In one embodiment, the feed network of the low-frequency phase shifter is provided with a low-frequency feed stub correspondingly and electrically connected with the combining component, and the length of the low-frequency feed stub is smaller than the wavelength corresponding to the lowest frequency of the low-frequency oscillator working frequency band of the low-frequency coupling feed; the feed network of the high-frequency phase shifter is provided with a high-frequency feed stub wire which is correspondingly and electrically connected with the high-frequency feed pin, and the length of the high-frequency feed stub wire is smaller than the wavelength corresponding to the lowest frequency of the high-frequency oscillator working frequency band of the high-frequency coupling feed.

According to the low-frequency oscillator and the array antenna for coupling feeding, as the top ends of the feeding components are connected with the feeding sections, the feeding sections and the radiating arms are correspondingly coupled to feed to realize energy transmission, and the feeding components are also coupled with the balun structure to improve impedance stability, namely, the feeding components are not assembled together by welding connection, so that the electroplating area of the low-frequency oscillator for coupling feeding is greatly reduced or the electroplating process can be avoided, the welding point of the low-frequency oscillator for coupling feeding is reduced, the manufacturing cost is reduced, the cost of the low-frequency oscillator for coupling feeding is reduced by more than 15%, and the manufacturing process of the product is more environment-friendly.

Drawings

Fig. 1 is a block diagram of a low frequency oscillator of a coupling feed according to an embodiment of the present application.

Fig. 2 is another view block diagram of the structure shown in fig. 1.

Fig. 3 is an exploded view of the structure shown in fig. 1.

Fig. 4 is a block diagram of the structure of fig. 1 with the power feeding and combining components removed.

Fig. 5 is an axial cross-sectional view of a groove in the structure shown in fig. 1.

Fig. 6 is a block diagram of a low frequency oscillator of a coupling feed according to another embodiment of the present application.

Fig. 7 is a block diagram of the structure of fig. 6 with the power feeding and combining components removed.

Fig. 8 is a block diagram of a low frequency oscillator for coupling feeding according to still another embodiment of the present application.

Fig. 9 is an exploded view of the structure shown in fig. 8.

Fig. 10 is a structural view of the power feeding part and the power feeding section in the structure shown in fig. 9.

Fig. 11 is a block diagram of an array antenna according to an embodiment of the present application.

Fig. 12 is another view of a block diagram of an embodiment of the structure of fig. 11.

Fig. 13 is another view block diagram of another embodiment of the structure shown in fig. 11.

10. A radiating arm; 11. radiating a single arm; 12. a coupling groove; 20. balun structure; 21. a base; 22. balun arm; 221. balun single arm; 23. a groove; 24. a grounding pin; 241. a hollow portion; 30. a combining part; 40. a power feeding part; 50. a feed section; 71. a first insulating dielectric member; 711. a slit; 72. a second insulating dielectric member; 73. a third insulating dielectric member; 80. a reflection plate; 91. a low frequency oscillator for low frequency coupling feeding; 92. a low frequency phase shifter; 921. a low frequency feed stub; 93. a high-frequency oscillator for high-frequency coupling feeding; 931. a high-frequency feed pin; 94. a high-frequency phase shifter; 941. a high frequency feed stub.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with 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, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

Referring to fig. 1 to 5, fig. 1 shows a block diagram of a low frequency oscillator of a coupling feed according to an embodiment of the present application. Fig. 2 shows another view block diagram of the structure shown in fig. 1. Fig. 3 shows an exploded structural view of the structure shown in fig. 1. Fig. 4 shows a structural view of the structure shown in fig. 1 with the power feeding part 40 and the combining part 30 removed. Fig. 5 shows an axial cross-section of the groove 23 in the structure shown in fig. 1. The embodiment of the present application provides a low frequency oscillator of coupling feed, the low frequency oscillator of coupling feed includes: two radiating arms 10 of the same polarization, a balun structure 20, a combiner part 30 and two feeder parts 40. The balun structures 20 are connected to the respective radiating arms 10. Specifically, the balun structure 20 and each radiating arm 10 are an integral structure, and specifically, the balun structure 20 and the radiating arms 10 are both formed by, but not limited to, die casting, forging, sheet metal, and the like. Thus, batch production can be realized, the manufacturing cost is reduced, and the manufacturing efficiency is improved.

In addition, the combining component 30 is disposed on the balun structure 20, and the combining component 30 is electrically connected to a feed network (not shown). The top end of each feeding component 40 is connected with a feeding section 50 correspondingly coupled with each radiating arm 10, the bottom end of each feeding component 40 is connected with a combining component 30 to realize combination, and each feeding component 40 is coupled with the balun structure 20 for feeding.

It should be noted that, the coupling feeding of the two conductive components means that the two conductive components are not electrically connected, but a gap is provided, and an insulating medium can be provided in the gap to realize insulation and fixation of the two conductive components, or no component is required to be provided, that is, insulation and isolation can be realized through air. Because the two conductive parts are arranged in a clearance way, the coupling transmission of energy between the two conductive parts can be realized. The smaller the gap size, the greater the coupling energy strength between the two conductive parts; conversely, as the gap size increases, the coupling energy between the two conductive members gradually decreases.

According to the coupling feed low-frequency oscillator, the top ends of the feed parts 40 are connected with the feed sections 50, the feed sections 50 and the radiating arms 10 are correspondingly coupled to realize energy transmission, the feed parts 40 are also coupled to the balun structures 20 to improve impedance stability, namely, the feed parts are not assembled together by welding connection, so that the electroplating area of the coupling feed low-frequency oscillator is greatly reduced, an electroplating process is not needed, welding points of the coupling feed low-frequency oscillator can be reduced, the effect of reducing manufacturing cost is achieved, the cost of the coupling feed low-frequency oscillator is reduced by more than 15%, and the product manufacturing process is more environment-friendly.

In some embodiments, the low-frequency oscillators of the coupling feed include a low-frequency oscillator 91 for radiating a low-frequency signal and/or a high-frequency oscillator 93 for radiating a high-frequency signal, which may be an array of low-frequency oscillators 91 of at least one low-frequency coupling feed, an array of high-frequency oscillators 93 of at least one high-frequency coupling feed, at least one low-frequency array and at least one high-frequency array adjacent array, an array of high-frequency oscillators 93 of one high-frequency coupling feed may be provided between two adjacent low-frequency oscillators 91 of the low-frequency coupling feed, and preferably a high-frequency oscillator 93 of one high-frequency coupling feed is nested within one low-frequency oscillator 91 of one low-frequency coupling feed, which may be arranged in a plurality of different and/or same high-frequency arrays for any one low-frequency radiating array in a flower-like manner, which may be specifically set by a technician according to the performance requirements of the system, such as gain requirements.

In some embodiments, the low-frequency oscillator of the coupling feed in the embodiment may be a low-frequency oscillator of the monopole coupling feed or a low-frequency oscillator of the dual-polarization coupling feed, which may be specifically selected according to actual requirements. In this embodiment, in fig. 1 to 10, the low-frequency oscillator with the coupling feed is specifically set as a low-frequency oscillator with dual-polarized coupling feed, but the present invention is not limited thereto. Each polarization direction is provided with two radiation arms 10 and two feed parts 40 for feeding the two radiation arms 10 with the same polarization respectively, one end of each feed part 40 is coupled with the corresponding radiation arm 10 for feeding, and the other end of each feed part 40 is combined through a combining part 30.

Referring to fig. 1-4, in some embodiments, the balun structure 20 includes a base 21 and a plurality of balun arms 22 connected to the base 21. Each balun arm 22 is connected to a respective radiating arm 10. The four radiating arms 10 are divided into two pairs, each pair of radiating arms 10 operating in the same polarization direction, which are supported on a pair of balun arms 22. Specifically, the two pairs of radiation arms 10 operate in two polarization directions orthogonal to each other, for example, a +45° polarization direction and a-45 ° polarization direction, or a perpendicular polarization intersection, or the like. Wherein each radiating arm 10 comprises two radiating single arms 11, and the radiating single arms 11 are linear, so that four radiating arms 10 jointly enclose a quadrilateral. In another embodiment, the radiating single arm 11 is of an arc type such that the four radiating arms 10 together enclose a circular or annular shape.

Referring to fig. 1 to 4, in some embodiments, the combining component 30 may be disposed on the base 21 or on the balun arm 22. When the combining element 30 is disposed on the base 21, the combining element 30 is more convenient to be assembled and connected with the feeding network below the base 21 than the balun arm 22, and in this embodiment, the combining element 30 is disposed on the base 21.

Referring to fig. 1 to 5, in one embodiment, each balun arm 22 and/or base 21 is provided with a groove 23 corresponding to the position of each feeding member 40. The feeding member 40 is inserted into the groove 23 corresponding to the position thereof and is disposed to be insulated from the groove 23. In this way, each feeding member 40 is constrained in the groove 23 to couple with each balun arm 22 and/or the base 21 for feeding, so that the surface wave radiation can be reduced while the welding point can be reduced, and the performance of the low-frequency oscillator for coupling feeding can be improved. In addition, the grooves 23 play a role in fixing the feeding member 40, and the overall structure is compact. In addition, since the feeding member 40 and the groove 23 are provided to be insulated from each other, the feeding member 40 is prevented from being electrically contacted with the balun arm 22 and/or the base 21 to cause a short circuit.

As an alternative, each balun arm 22 is provided with a groove 23 corresponding to the position of each feeding element 40, and the base 21 does not need to be provided with a groove 23. Alternatively, the base 21 is provided with grooves 23 corresponding to the positions of the respective power feeding members 40, and the balun arms 22 are not required to be provided with the grooves 23.

Referring to fig. 1, 3 and 4, in one embodiment, when the balun arm 22 and the base 21 are each provided with a groove 23 corresponding to the same position of the feeding member 40, the groove 23 on the balun arm 22 is communicated with the groove 23 on the base 21. In this way, the same power feeding component 40 can be respectively arranged in the groove 23 of the balun arm 22 and the groove 23 of the base 21 in a penetrating way without switching, so that the disassembly and assembly operation of the power feeding component 40 can be conveniently realized, and after the power feeding component 40 is arranged in place in the groove 23, all parts of the power feeding component 40 along the length direction of the power feeding component are arranged in the groove 23 in a penetrating way, and the parts do not protrude out of the surface of the balun arm 22 and the external area of the base 21, so that the surface wave radiation interference is greatly reduced, and the performance of the low-frequency oscillator for coupling power feeding is improved.

Referring to fig. 1, 3 and 4, specifically, for two feeding members 40 with the same polarization, grooves 23 are formed on two balun arms 22 corresponding to the positions of the two feeding members 40 with the same polarization, two grooves 23 corresponding to the positions of the two feeding members 40 with the same polarization are formed on the base 21, and the grooves 23 on the two balun arms 22 are communicated with the two grooves 23 on the base 21 to form a through groove.

Referring to fig. 1, 3 and 4, in one embodiment, the radiation arms 10 are arranged in four pairs diagonally, and two radiation arms 10 arranged diagonally are arranged in the same polarization, i.e. two radiation arms 10 arranged on one diagonal are operated in a polarization direction of +45°, and two radiation arms 10 arranged on the other diagonal are operated in a polarization direction of-45 °. In addition, four balun arms 22 are provided, and four balun arms 22 are correspondingly connected to four radiating arms 10. The number of the feeding members 40 is four, and the four feeding members 40 are provided corresponding to the four radiation arms 10. Four grooves 23 are provided on the base 21 corresponding to the four power feeding members 40, respectively. The grooves 23 in one polarization direction are disposed to intersect with the grooves 23 in the other polarization direction and are different in depth. In this way, for the low frequency vibrator of the dual polarized coupling feed, when the feed members 40 in two different polarization directions are installed in the two grooves 23 which are disposed to cross each other and have different depths, the cross arrangement at different heights can be realized, and the mutual interference in installation due to the identical heights can be avoided.

Referring to fig. 1-4, in one embodiment, each balun arm 22 includes two balun single arms 221 connected to base 21. Each radiating arm 10 comprises two radiating single arms 11. For the corresponding connection of the balun arms 22 and 10, two single radiating arms 11 are correspondingly connected with two single balun arms 221, wherein a groove 23 corresponding to the feeding part 40 is arranged on one single balun arm 221, and the single radiating arm 11 connected with the other single balun arm 221 is coupled with the feeding section 50 for feeding.

Referring to fig. 3, in one embodiment, a first dielectric element 71 is disposed on an outer wall of the feeding member 40. The first insulating dielectric element 71 is disposed around the circumference of the power feeding member 40. The first insulating dielectric element 71 extends from one end of the power feeding member 40 to the other end of the power feeding member 40. Of course, referring to fig. 8 to 10, the first insulating dielectric members 71 may be provided in plurality and sequentially spaced apart along the extending direction of the feeding member 40. Thus, the first insulating medium member 71 plays a role in insulating and isolating, and can prevent the feeding component 40 from being in direct electrical contact with the balun structure 20 to cause short circuit; in addition, when the first insulating medium member 71 and the balun structure 20 are abutted against each other, the thickness of the first insulating medium member 71 can determine the gap size between the power feeding component 40 and the balun structure 20, so that the impedance stability of the power feeding component 40 is ensured, and the energy transmission stability of the power feeding component 40 and the balun structure 20 can be realized. In addition, when the feeding member 40 is tightly abutted with the wall of the groove 23 through the first insulating medium 71, stable installation in the groove 23 is realized, and short circuit caused by electrical contact with the wall of the groove 23 can be avoided.

In some embodiments, the first insulating medium member 71 includes, but is not limited to, various insulating materials such as rubber materials, resin materials, polyurethane materials, and the like, and may be flexibly selected according to practical requirements.

In some embodiments, the first dielectric element 71 includes, but is not limited to, being integrally injection molded, 3D printed, glued or otherwise sleeved onto the outer wall of the feeding member 40.

Referring to fig. 3, in one embodiment, at least one slot 711, thinned region or hollowed-out region is provided at a position of the first insulating medium member 71 corresponding to the bending position of the feeding member 40. In this way, at least one gap 711, thinning area or hollow area is provided at the bending position of the first insulating medium member 71 corresponding to the feeding member 40, so that the bending operation can be conveniently performed along with the feeding member 40 in the assembly process, and the assembly efficiency is improved.

In some embodiments, the feed member 40 includes, but is not limited to, conductors having various regular shapes and other irregular shapes with circular, elliptical, square, triangular, pentagonal, etc. axial cross-sections.

Referring to fig. 1, 2 or 6, in one embodiment, a gap is provided between the feed section 50 and its corresponding coupled feed radiating arm 10. Specifically, the second insulating medium member 72 is disposed in the gap between the feeding section 50 and the radiating arm 10, that is, the feeding section 50 is connected to the radiating arm 10 through the second insulating medium member 72, and the second insulating medium member 72 can realize mutual insulation and isolation between the feeding section 50 and the radiating arm 10, so that coupling feeding is realized, and stability of coupling feeding can be improved. In addition, the feeding section 50 and the radiating arm 10 are coupled to each other for feeding without a welding connection as in the related art, so that welding spots can be reduced.

The distance between the feed section 50 and the radiating arm 10 is also dimensioned according to the thickness of the second insulating medium element 72. When the thickness of the second dielectric element 72 is increased, the size of the gap between the feed section 50 and the radiating arm 10 is correspondingly increased; conversely, when the thickness of the second dielectric element 72 is reduced, the size of the gap between the feed section 50 and the radiating arm 10 is correspondingly reduced.

Referring to fig. 1, 2 or 6, in one embodiment, the extension direction L of the feeding section 50 is the same as the extension direction L of the radiating arm 10 of its respective coupling feed. Specifically, the direction of extension L of the feed section 50 is the same as the direction of extension L of the radiating single arm 11 of its respective coupling feed. Furthermore, when the feeding section 50 is provided in the form of a sheet, the shape of the feeding section 50 is adapted to the shape of the radiating single arm 11 to which it is coupled for feeding.

Referring to fig. 1 to 5, in one embodiment, each radiating arm 10 is provided with a coupling slot 12, and each feeding section 50 correspondingly penetrates through each coupling slot 12 and couples with a slot wall of the coupling slot 12 for feeding. In this way, by adding the coupling slots 12 to the radiating arms 10, the respective feeding segments 50 are coupled to the respective coupling slots 12, thereby achieving coupling feeding to the respective radiating arms 10. The coupling surface area of the coupling slot 12 and the feed section 50 is larger, i.e. the coupling strength of the two is larger. The feed segment 50 is provided in the coupling groove 12 via the second insulating medium, and can be stably provided in the coupling groove 12.

Specifically, the coupling slot 12 includes, but is not limited to, a clamping slot, and the feeding section 50 is clamped in the coupling slot 12. Of course, the coupling slot 12 is not limited to be configured as a clamping slot, and the feeding section 50 may be fixedly disposed in the coupling slot 12 in other manners, for example, pressed into the coupling slot 12 by self-pressing force, and then fixed in the coupling slot 12 by adhesive bonding.

Referring to fig. 6-9, in one embodiment, a second dielectric element 72 is disposed between the feed section 50 and the radiating arm 10. The feeding section 50 is in a sheet or plate shape, the second insulating dielectric member 72 is in a sheet or plate shape, and the radiation arm 10, the second insulating dielectric member 72, and the feeding section 50 are stacked in this order. In this way, the feed section 50, the second insulating dielectric member 72 and the radiating arm 10 cooperate to form a microstrip transmission line.

Referring to fig. 3, 9 and 10, in some embodiments, the feeding member 40 is integrally formed with the corresponding feeding section 50, specifically, but not limited to, integrally formed by sheet metal, integrally formed by die casting, or integrally formed by bending, etc. Of course, as shown in fig. 6, the feeding member 40 may be integrally connected to the feeding section 50 by welding.

Referring to fig. 2 and 3, in one embodiment, a hollow portion 241 corresponding to the combining component 30 is provided on the base 21 of the balun structure 20, and the combining component 30 is installed in the hollow portion 241 through a third insulating medium member 73. The combining member 30 is constructed in a weldable structure, and the bottom ends of both the power feeding members 40 are welded to the combining member 30.

In some embodiments, the third insulating medium member 73 includes, but is not limited to, being integrally injection molded onto the outer wall of the composite member 30.

In some embodiments, the combining component 30 includes, but is not limited to, being configured as a metal conductor, which may be manufactured from a metal tube, such as a copper tube, or from a metal sheet by a sheet metal process, or may be die-cast from a metal material; and the surface of the molded structure made of non-metal materials is electroplated with a metal layer.

In some embodiments, the combiner component 30 is connected with a feeder of the feed network, e.g., welded.

Referring to fig. 2 and 3, in one embodiment, the base 21 of the balun structure 20 is provided with a ground pin 24, a solderable layer is disposed on an outer wall of the ground pin 24, and the solderable layer of the ground pin 24 is soldered to a ground conductor of the feed network.

Referring to fig. 2 to 4, in some embodiments, the ground pin 24 is formed with a hollow 241. In this way, when the ground pin 24 is soldered to the outer conductor of the coaxial cable, the combiner 30 is soldered to the inner conductor of the coaxial cable.

In some embodiments, the solderable layer includes, but is not limited to, by cladding or spraying onto the outer wall of the ground pin 24. In addition, the surface area of the balun structure 20 except the grounding pin 24 does not need to be designed with a solderable layer, in other words, the surface area is not in soldered connection with other components, so that welding spots are reduced as much as possible, the manufacturing cost is reduced, the cost of the low-frequency oscillator for realizing coupling feeding is reduced by more than 15%, and the manufacturing process of the product is more environment-friendly.

In some embodiments, the feeding means 40 on the balun arms 22 and on the base 21 of the balun structure 20 use the same type of signal transmission line, reducing the variety of transmission lines and their transit nodes, i.e. solder joints, thereby reducing losses.

Referring to fig. 1 to 5 and fig. 11 to 12, fig. 11 shows a block diagram of an array antenna according to an embodiment of the present application. FIG. 12 illustrates another perspective block diagram of an embodiment of the structure illustrated in FIG. 11. In some embodiments, an array antenna comprises at least one low frequency element of the coupled feed of any of the embodiments described above.

According to the array antenna, the top ends of the feed components 40 are connected with the feed sections 50, the feed sections 50 and the radiating arms 10 are correspondingly coupled to feed to realize energy transmission, and the feed components 40 are also coupled to the balun structure to improve impedance stability, namely, are assembled together without adopting welding connection, so that the electroplating area of the low-frequency oscillator of the coupling feed is greatly reduced or the electroplating process can be avoided, the welding point of the low-frequency oscillator of the coupling feed is reduced, the manufacturing cost is reduced, the cost of the low-frequency oscillator of the coupling feed is reduced by more than 15%, and the product manufacturing process is more environment-friendly.

Referring to fig. 11 and 12, in some embodiments, the array antenna further includes a reflective plate 80. The low frequency oscillator of the coupling feed is specifically provided as the low frequency oscillator 91 of the low frequency coupling feed, and is provided on the reflection plate 80. The array antenna further includes a low frequency phase shifter 92 disposed on the reflection plate 80, the low frequency phase shifter 92 is provided with a feeding network, and the combining component 30 is electrically connected to the feeding network of the low frequency phase shifter 92.

Referring to fig. 11 and 12, in some embodiments, the low frequency resonators 91 of the low frequency coupling feed are disposed in a plurality and arranged in an array. Each column of low frequency coupled fed low frequency elements 91 corresponds to one or more low frequency phase shifters 92. Specifically, the low-frequency resonators 91 of the low-frequency coupling feed are arranged in two rows as shown in fig. 11.

Referring to fig. 11 and 12, in some embodiments, the respective combining components 30 of the low frequency resonators 91 of each column of low frequency coupling feeding are arranged on a straight line and parallel to the longitudinal direction L of the low frequency phase shifter 92.

In this embodiment, the straight line is not strictly a straight line in the mathematical sense, but may be visually on the same straight line. Specifically, the deviation of the center of each of the combining members 30 from the corresponding straight line is controlled to be within 5mm, for example.

Note that, the parallelism in this embodiment is not strictly parallel in the mathematical sense, but may be seen to be parallel to each other by the naked eye. Specifically, the angle between the straight line corresponding to each combining member 30 and the longitudinal direction L of the low-frequency phase shifter 92 is controlled to be within 5 °, for example.

Referring to fig. 11 and 12, in some embodiments, the feeding network of the low frequency phase shifter 92 is provided with a low frequency feeding stub 921 correspondingly electrically connected to the combining component 30, and the length of the low frequency feeding stub 921 is smaller than the wavelength corresponding to the lowest frequency of the operating frequency band of the low frequency vibrator 91 fed by low frequency coupling.

Referring to fig. 11 and 12, in some embodiments, the array antenna further includes at least one high-frequency coupled fed high-frequency oscillator 93 disposed on the reflection plate 80 and a high-frequency phase shifter 94 disposed on the reflection plate 80. The high-frequency phase shifter 94 is provided with a feeding network, and a high-frequency feeding pin 931 of the high-frequency coupled fed high-frequency vibrator 93 is electrically connected to the feeding network of the high-frequency phase shifter 94.

Referring to fig. 11 and 12, in some embodiments, a plurality of high-frequency resonators 93 of the high-frequency coupling feed are arranged in an array. Each column of high frequency coupled fed high frequency elements 93 corresponds to one or more high frequency phase shifters 94.

Referring to fig. 11 and 12, in some embodiments, the respective high-frequency feeding pins 931 of the high-frequency coupled fed high-frequency vibrators 93 of each column are arranged on a straight line and parallel to the longitudinal direction of the high-frequency phase shifter 94.

Referring to fig. 11 and 12, in some embodiments, the feeding network of the high-frequency phase shifter 94 is provided with a high-frequency feeding stub 941 electrically connected to the high-frequency feeding pin 931, and the length of the high-frequency feeding stub 941 is smaller than the wavelength corresponding to the lowest frequency of the operating frequency band of the high-frequency oscillator 93 of the high-frequency coupling feeding.

Referring to fig. 11 and 12, in some embodiments, a high frequency oscillator 93 of a high frequency coupling feed is nested in each low frequency oscillator 91 of a low frequency coupling feed. Further, high-frequency vibrators 93, for example, one or more high-frequency coupling feeds, are correspondingly arranged in the intervals of the low-frequency vibrators 91 of the adjacent two low-frequency coupling feeds.

In some embodiments, the low-frequency phase shifter 92 may be disposed on the reflecting plate 80 in such a way that its phase-shifting medium plate surface is parallel to the reflecting plate 80 surface, as shown in fig. 12, or may be disposed on the reflecting plate 80 in such a way that its phase-shifting medium plate surface is perpendicular to the reflecting plate 80 surface, as shown in fig. 13.

In addition, similarly, the high-frequency phase shifter 94 may be disposed on the reflecting plate 80 in such a manner that the plate surface of the phase shifting medium plate is parallel to the plate surface of the reflecting plate 80, as shown in fig. 12, or may be disposed on the reflecting plate 80 in such a manner that the plate surface of the phase shifting medium plate is perpendicular to the plate surface of the reflecting plate 80, as shown in fig. 13.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If 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, if any, are for descriptive purposes only and do not represent a unique embodiment.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (19)

1. A low frequency oscillator of coupling feed, characterized in that the low frequency oscillator of coupling feed comprises:

two radiating arms of the same polarization;

the balun structure is respectively connected with each radiation arm;

the combining component is arranged on the balun structure and is used for being electrically connected with a feed network; and

And the top ends of the two feed components are respectively connected with a feed section which is correspondingly coupled with the radiation arms for feeding, the bottom ends of the feed components are connected with the combining component to realize a combining circuit, and the feed components are respectively coupled with the balun structure for feeding.

2. The low frequency coupled fed vibrator of claim 1, wherein the balun structure comprises a base and at least two balun arms connected to the base; each balun arm is correspondingly connected with each radiation arm, and the combining part is arranged on the base or the balun arm.

3. The low frequency coupled fed vibrator according to claim 2, wherein each balun arm and/or the base is provided with a groove corresponding to each feeding member position; the feed component is arranged in the groove corresponding to the position of the feed component in a penetrating way and is mutually insulated from the groove.

4. A low frequency oscillator for coupling feed according to claim 3, wherein when the balun arm and the base are each provided with a groove corresponding to the same position of the feed member, the grooves on the balun arm and the grooves on the base communicate with each other.

5. A low frequency oscillator for coupling feed according to claim 3, wherein the radiating arms are arranged in four pairs diagonally, and two radiating arms arranged diagonally are set to the same polarization; the number of the balun arms is four, and the four balun arms are correspondingly connected with the four radiation arms; the number of the feed parts is four, and the four feed parts are arranged corresponding to the four radiation arms; the base is provided with four grooves which are respectively and correspondingly arranged with the four feed components; the grooves in one polarization direction and the grooves in the other polarization direction are arranged to intersect each other and have different depths.

6. A low frequency coupled fed vibrator according to claim 3, wherein each balun arm comprises two balun single arms connected to the base, each radiating arm comprising two radiating single arms; for the balun arms and the radiating arms which are correspondingly connected, two radiating single arms are correspondingly connected with two balun single arms, wherein one balun single arm is provided with a groove corresponding to the feeding part, and the radiating single arm connected with the other balun single arm is coupled with the feeding section for feeding.

7. The low frequency oscillator of the coupling feed according to claim 1, wherein a first insulating medium member is provided on an outer wall of the feed member; the first insulating medium piece is arranged around the circumference of the power feeding component; the first insulating medium piece extends from one end of the power feeding component to the other end of the power feeding component, or the first insulating medium pieces are arranged in a plurality and are sequentially arranged at intervals along the extending direction of the power feeding component.

8. The low frequency oscillator of claim 7, wherein the first insulating dielectric member is provided with at least one slit, thinned area or hollowed-out area at a bending position corresponding to the feeding member.

9. The coupling-fed low frequency oscillator according to claim 1, wherein the feed sections and the radiating arms of their respective coupling feeds extend in the same direction; and a gap is arranged between the feed section and the radiation arm of the corresponding coupling feed.

10. The low-frequency oscillator of claim 9, wherein each radiating arm is provided with a coupling slot, and each feeding section is correspondingly arranged in each coupling slot in a penetrating manner and is coupled with the slot wall of the coupling slot for feeding.

11. The low frequency coupled fed vibrator of claim 9, wherein a second insulating dielectric member is disposed between the feed section and the radiating arm; the feed section is in a sheet shape or a plate shape, the second insulating medium piece is in a sheet shape or a plate shape, and the radiation arm, the second insulating medium piece and the feed section are sequentially overlapped.

12. The low frequency coupled fed vibrator according to claim 1, wherein the feeding member is integrally formed with the corresponding feeding section; or the feed component is welded with the corresponding feed section.

13. The low-frequency oscillator of the coupling feed according to claim 1, wherein a hollow part which is adapted to the combining part is arranged on the base of the balun structure, and the combining part is arranged in the hollow part through a third insulating medium piece; the combined component is of a weldable structure, and the bottom ends of the two power feeding components are welded with the combined component.

14. The low frequency oscillator of claim 1, wherein the base of the balun structure is provided with a grounding pin, a solderable layer is arranged on an outer wall of the grounding pin, and the solderable layer of the grounding pin is in solder connection with a grounding conductor of the feed network.

15. The low frequency coupled fed vibrator of claim 1, wherein the balun structure is an integral structure with each radiating arm.

16. An array antenna, characterized in that the array antenna comprises a reflecting plate, at least one low-frequency coupled fed low-frequency oscillator arranged on the reflecting plate, each low-frequency coupled fed low-frequency oscillator is arranged as a coupled fed low-frequency oscillator according to any one of claims 1 to 15, and further comprises a low-frequency phase shifter arranged on the reflecting plate, the low-frequency phase shifter is provided with a feed network, and the combining component is electrically connected with the feed network of the low-frequency phase shifter; the array antenna further comprises at least one high-frequency coupled fed high-frequency oscillator arranged on the reflecting plate and a high-frequency phase shifter arranged on the reflecting plate, wherein the high-frequency phase shifter is provided with a feed network, and a high-frequency feed pin of the high-frequency coupled fed high-frequency oscillator is electrically connected with the feed network of the high-frequency phase shifter.

17. The array antenna according to claim 16, wherein the low frequency elements of the low frequency coupling feed are provided in plurality and arranged in an array; the high-frequency oscillators of the high-frequency coupling feed are arranged in a plurality of arrays.

18. The array antenna according to claim 16, wherein the respective combining means of the low-frequency resonators of each column of the low-frequency coupling feed are arranged in a straight line and parallel to a longitudinal direction of the low-frequency phase shifter.

19. The array antenna of claim 16, wherein the feed network of the low-frequency phase shifter is provided with a low-frequency feed stub electrically connected to the combining component, and the length of the low-frequency feed stub is smaller than the wavelength corresponding to the lowest frequency of the low-frequency oscillator operating frequency band of the low-frequency coupling feed; the feed network of the high-frequency phase shifter is provided with a high-frequency feed stub wire which is correspondingly and electrically connected with the high-frequency feed pin, and the length of the high-frequency feed stub wire is smaller than the wavelength corresponding to the lowest frequency of the high-frequency oscillator working frequency band of the high-frequency coupling feed.