CN113964500B - Radiating unit components and antennas - Google Patents

Abstract

The invention provides a radiating element assembly and an antenna, wherein the radiating element assembly comprises: the half-wave oscillator, the feed balun, the transmission line, the first feed assembly and the second feed assembly; the feed balun is fixed at the bottom of the half-wave vibrator and is internally provided with a cavity, the first feed assembly penetrates through the half-wave vibrator and the cavity in the feed balun from top to bottom and then stretches out of the bottom of the feed balun, the second feed assembly is arranged at the bottom of the feed balun, and the first feed assembly is connected with the half-wave vibrator and is connected with the second feed assembly through a transmission line. The antenna comprises: a phase shifting network component and a radiating element array arranged thereon; the phase-shifting network component comprises two phase-shifting networks working in different frequency bands, and the first feed component and the second feed component of each radiating unit component are respectively and electrically connected with the output ends of the phase-shifting networks of the two frequency bands. The technical scheme provided by the invention solves the technical problems of complex structure, multiple connection points and multiple welding spots of the existing antenna network.

Description

Radiating unit components and antennas

Technical Field

The present invention relates to the field of communication technology, and in particular to a radiation unit component and an antenna.

Background technique

With the rapid development of technology in the field of mobile communications, communication base stations have higher and higher requirements for antennas. Combined with the current situation of multi-standard operation of mobile communications and difficulty in site selection for base stations, multi-frequency electrically adjustable antennas have become the first choice for base stations, especially in the 5G (5th Generation Mobile Communication Technology) network era, which requires one antenna to integrate all 4G (4th Generation Mobile Communication Technology) network standard antennas and multiple antenna arrays to be set in the antenna. At the same time, tower companies require that the antenna's windward area should be as small as possible and the weight should be as light as possible. Therefore, miniaturization of antenna cross-section design has become a development trend.

In the design of miniaturized antenna cross-section, the compact layout of antenna arrays between multiple frequency bands leads to deterioration of antenna radiation performance, thus affecting the quality of network coverage. Therefore, in order to achieve miniaturized cross-section design, it is necessary to achieve independent operation of multiple frequency bands without increasing the number of antenna arrays, and for this purpose, the radiation unit reuse scheme is widely used.

In the existing radiation unit multiplexing scheme, the radiation unit needs to be connected to the combiner to separate two ports to connect to different phase-shifting networks. Although this scheme realizes independent operation of different frequency bands without increasing the antenna array, the superimposed layout of two sets of phase-shifting networks matching one set of radiation unit arrays plus a combiner device in the limited array space leads to a complex network structure of the antenna, and there are many connection points and solder points, which brings great challenges to the mass production of antennas.

Summary of the invention

The present invention is completed in order to at least partially solve the technical problem in the prior art that the radiation unit needs to be connected to the combiner, resulting in a complex antenna structure and numerous connection points and welding points.

According to one aspect of the present invention, there is provided a radiation unit component, comprising: a half-wave dipole, a feeding balun, a transmission line, a first feeding component and a second feeding component; wherein the feeding balun is fixed at the bottom of the half-wave dipole and is provided with a cavity inside, the first feeding component passes through the half-wave dipole and the internal cavity of the feeding balun from top to bottom and then extends out from the bottom of the feeding balun, the second feeding component is provided at the bottom of the feeding balun, and the first feeding component is connected to the half-wave dipole and is connected to the second feeding component through the transmission line.

Optionally, the first feeding assembly includes a first feeding plate and a second feeding plate, and the second feeding assembly includes a first feeding post and a second feeding post; wherein the first feeding plate and the second feeding plate respectively pass through different cavities inside the half-wave oscillator and the feeding balun from top to bottom and extend from the bottom of the feeding balun, and the tops of the first feeding plate and the second feeding plate are electrically connected or coupled to the half-wave oscillator, and the lower parts extending from the bottom of the feeding balun are respectively connected to the tops of the first feeding post and the second feeding post through a transmission line.

Optionally, the first feed plate and the second feed plate are both long strip structures with through holes at the bottom; the first feed post and the second feed post are both nail-shaped structures with the tips facing downward; one ends of the two transmission lines are respectively inserted into the through holes at the bottom of the first feed plate and the second feed plate and welded at the through holes, and the other ends are respectively welded to the top of the first feed post and the second feed post.

Optionally, the polarizations of the first feeding plate and the second feeding post are orthogonal; the polarizations of the first feeding post and the second feeding plate are orthogonal.

Optionally, the transmission line is a coaxial cable transmission line and is U-shaped; the openings of the two U-shaped transmission lines are opposite and symmetrically arranged, and the middle parts of the two U-shaped transmission lines extend outward and protrude from the side of the feed balun.

Optionally, the half-wave oscillator is specifically two groups of half-wave oscillators with orthogonal polarizations, and the two arms of each group of half-wave oscillators are symmetrically distributed metal parts.

Optionally, each metal piece is a rectangular sheet structure, on which a plurality of through holes of a preset shape are provided.

Optionally, the radiation unit assembly further includes: a fixing member arranged at the bottom of the feed balun; the first feed assembly and the second feed assembly both pass through the fixing member, and the fixing member fixes the second feed assembly to the bottom of the feed balun.

According to another aspect of the present invention, there is provided an antenna, comprising: a phase-shift network component and a radiating element array composed of a plurality of the aforementioned radiating element components arranged thereon; the phase-shift network component comprises two phase-shift networks operating in different frequency bands, a first feeding component of each radiating element component is electrically connected to an output end of the phase-shift network of one frequency band, and a second feeding component is electrically connected to an output end of the phase-shift network of another frequency band.

Optionally, each phase shifting network comprises a signal transmission network and a component which can slide relative to the signal transmission network and is used for phase shifting of the signal transmission network.

Optionally, the phase-shift network component further includes a filter circuit arranged at an output end of each phase-shift network.

Optionally, the operating frequency bands of the two phase shift networks are selected from 1695-2170 MHz/2490-2690 MHz, 1427-2170 MHz/2490-2690 MHz or 1427-1880 MHz/2300-2690 MHz.

The technical solution provided by the present invention may include the following beneficial effects:

The radiation unit assembly provided by the present invention has a structure in which the first feeding assembly is respectively connected to the half-wave dipole and the second feeding assembly, so that the radiation unit assembly does not need to be connected to a combiner, and the free end of the first feeding assembly and the free end of the second feeding assembly can be directly connected to different phase-shifting networks as two ports, and the overall structure is simple. The antenna provided by the present invention forms a radiation unit array through multiple radiation unit assemblies and is directly fixed on a phase-shifting network assembly working in different frequency bands. The network composition structure of the entire antenna is simple, with fewer connection points and welding points, and is suitable for mass production.

Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation to the technical solution of the present invention.

FIG1 is an axonometric view of a radiation unit assembly provided by an embodiment of the present invention;

FIG2 is a rear view of a radiation unit assembly provided by an embodiment of the present invention;

FIG3 is an exploded view of a radiation unit assembly provided in an embodiment of the present invention;

FIG4 is a front view of an antenna provided in an embodiment of the present invention;

FIG5 is a back view of an antenna provided in an embodiment of the present invention;

FIG6 is an isometric view of an antenna provided in an embodiment of the present invention;

FIG. 7 is an exploded view of an antenna provided in an embodiment of the present invention.

In the figure: 1 - half-wave oscillator; 2 - first feeding assembly; 21 - first feeding plate; 22 - second feeding plate; 3 - second feeding assembly; 31 - first feeding post; 32 - second feeding post; 4 - transmission line; 5 - fixing piece; 6 - radiation unit assembly; 7 - phase-shifting network assembly; 8 - feeding balun; 9 - upper phase-shifting network; 10 - lower phase-shifting network; 11 - shell.

Detailed ways

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence; and, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be arbitrarily combined with each other.

As shown in Figures 1 to 3, an embodiment of the present invention provides a radiation unit component, which includes: a half-wave oscillator 1, a feeding balun 8, a transmission line 4, a first feeding component 2 and a second feeding component 3; wherein the feeding balun 8 is fixed to the bottom of the half-wave oscillator 1 and is provided with a cavity inside, the first feeding component 2 passes through the half-wave oscillator 1 and the internal cavity of the feeding balun 8 from top to bottom and then extends from the bottom of the feeding balun 8, the second feeding component 3 is arranged at the bottom of the feeding balun 8, and the first feeding component 2 is connected to the half-wave oscillator 1 and is connected to the second feeding component 3 through the transmission line 4.

In this embodiment, the first feeding component is respectively connected to the half-wave dipole and the second feeding component, so that the radiation unit component does not need to be connected to the combiner, and the free end of the first feeding component and the free end of the second feeding component can be directly connected to different phase shifting networks as two ports. The overall structure is simple, which solves the technical problems of the current complex structure of the antenna network and the numerous connection points and welding points.

In a specific implementation, the half-wave oscillator 1 is specifically two groups of half-wave oscillators with orthogonal polarizations, and the two arms of each group of half-wave oscillators are symmetrically distributed metal parts.

In the present embodiment, the two groups of half-wave oscillators are specifically two groups of half-wave oscillators that are orthogonal to each other to form ±45° dual-polarization radiation characteristics, wherein the dual polarizations are positive 45° polarization and negative 45° polarization respectively; each group of half-wave oscillators has two radiation arms, and the two groups of half-wave oscillators have a total of four radiation arms, and these four radiation arms are distributed in a grid pattern. This arrangement can effectively remove the coupling between the dual polarizations; the two arms of each group of half-wave oscillators are equal in length, and the total length thereof is half of the wavelength of the center frequency (i.e., the length of each arm is one quarter of the wavelength) to form a half-wave symmetrical oscillator.

Preferably, the half-wave oscillator 1 is coaxially arranged with the feeding balun 8. Furthermore, the half-wave oscillator 1 and the feeding balun 8 are made of the same material, for example, aluminum alloy or non-magnetic metal material, and the two are vertically arranged to form an integrated structure.

In this embodiment, the half-wave oscillator and the feeding balun are integrally formed to facilitate manufacturing.

In a specific embodiment, each metal piece is a rectangular sheet structure, on which a plurality of through holes of a preset shape are opened.

In this embodiment, each metal piece is a rectangular metal sheet (preferably a square metal sheet) with a certain shape hollowed out, and each hollowed-out portion is formed as a through hole.

As shown in Figures 1 and 2, three through holes can be provided on each rectangular metal sheet, specifically one square hole and two right-angled triangular through holes. Among them, the right angles of the two right-angled triangular through holes are respectively located at the two opposite corners of the rectangular metal sheet, and the two right-angled triangular through holes are equal in size and symmetrically arranged, forming a strip structure between the two, and the square hole is sandwiched between the two right-angled triangular through holes and arranged on the strip structure, and the strip structure where the square holes of the four rectangular metal sheets are located is arranged in a cross shape; in addition, the area of the square hole is smaller, and the area of the right-angled triangular through hole is larger. Specifically, the area of the right-angled triangular through hole is several times that of the square hole (for example, 6 to 12 times). The hypotenuse of the right-angled triangular through hole can be a smooth straight edge, or it can be a non-straight edge composed of multiple segments, and the angle between adjacent line segments is an obtuse angle.

In a specific embodiment, the first feeding component 2 includes a first feeding plate 21 and a second feeding plate 22, and the second feeding component 3 includes a first feeding column 31 and a second feeding column 32; wherein the first feeding plate 21 and the second feeding plate 22 respectively pass through different cavities inside the half-wave oscillator 1 and the feeding balun 8 from top to bottom and then extend from the bottom of the feeding balun 8, and the tops of the first feeding plate 21 and the second feeding plate 22 are electrically connected or coupled to the half-wave oscillator 1, and the lower parts extending from the bottom of the feeding balun 8 are respectively connected to the tops of the first feeding column 31 and the second feeding column 32 through a transmission line 4.

It can be seen that the top of the first feeding plate 21 and the second feeding plate 22 is the feeding part and the bottom is the welding part. The feeding part is connected to the half-wave oscillator. The welding part passes through the internal cavity structure of the feeding balun and passes out from the bottom of the feeding balun to the back of the radiation unit, and then is connected to the first feeding column 31 and the second feeding column 32 respectively through two transmission lines 4.

In this embodiment, after the first feed sheet 21 and the second feed sheet 22 extend downward from directly above the half-wave oscillator 1, one end is electrically connected or coupled to the half-wave oscillator 1, and the other end passes through different cavities inside the feed balun 8 to achieve mutual insulation, and then extends from the bottom of the feed balun 8 for signal transmission; one end of the two transmission lines 4 is respectively connected to the lower part of the first feed sheet 21 and the second feed sheet 22 to form a one-to-two power divider, and the other end of the two transmission lines 4 (i.e., the other end of the power divider) is respectively connected to the top of the first feed column 31 and the second feed column 32. It can be seen that this embodiment realizes port separation through the specific connection method of the two transmission lines with the first feed component and the second feed component, wherein the bottom end (free end) of the first feed component is used as one port, and the bottom end (free end) of the second feed component is used as another port, and these two ports can be directly connected to different phase shift networks to achieve radiation unit multiplexing.

In a specific embodiment, the first feed sheet 21 and the second feed sheet 22 are both long strip structures, and a through hole is provided at the lower part thereof; the first feed post 31 and the second feed post 32 are both nail-shaped structures, and the tip is facing downward; one end of the two transmission lines 4 is respectively inserted into the through holes at the lower part of the first feed sheet 21 and the second feed sheet 22 and welded at the through holes (here is the welding point), and the other end is respectively welded at the top of the first feed post 31 and the second feed post 32 (here is the welding point). Of course, the length of the feed post is smaller than the length of the feed sheet, for example, the length of the feed sheet is 3 to 5 times the length of the feed post.

In this embodiment, the first/second feeding sheet of the long strip structure and the first/second feeding post of the nail structure are connected through a transmission line to achieve port separation, which has a simple structure and few welding points and is suitable for mass production.

Furthermore, the bottom ends of the first feeding plate 21 and the second feeding plate 22 are each provided with a strip-shaped protrusion extending downward, so as to facilitate insertion into the corresponding phase-shifting network and connection with the output end of the phase-shifting network.

In a specific implementation, the first feeding plate 21 and the second feeding post 32 are arranged with polarizations orthogonal to each other; the first feeding post 22 and the second feeding plate 31 are arranged with polarizations orthogonal to each other.

Furthermore, the first feeding plate 21 , the second feeding plate 22 , the first feeding post 31 and the second feeding post 32 are separated from each other to ensure the distance between polarizations.

In this embodiment, the phase difference between the first feeding plate 21 and the second feeding column 32 is 180 degrees, and the phase difference between the first feeding column 22 and the second feeding plate 31 is 180 degrees, which can realize differential feeding of the half-wave oscillator and achieve balanced current without setting up an additional balancing structure.

In a specific implementation, the transmission line 4 is a coaxial cable transmission line and is U-shaped; the openings of the two U-shaped transmission lines are opposite and symmetrically arranged, and the middle parts of the two U-shaped transmission lines extend outward and protrude from the side of the feed balun 8.

In this embodiment, both ends of the U-shaped coaxial cable transmission line extend into the bottom of the feed balun 8 and are respectively connected to the lower part of the first feed plate 21 (second feed plate 22) and the top of the first feed column 31 (second feed column 32), while the middle part of the U-shaped coaxial cable transmission line extends outward from the bottom of the feed balun 8, so that most of the coaxial cable transmission line protrudes from the side of the feed balun 8. Such a structure is easy to weld and the welding points are clear.

As shown in Figures 1 and 3, the radiation unit assembly also includes: a fixing member 5 arranged at the bottom of the feeding balun 8; the first feeding assembly 2 and the second feeding assembly 3 both pass through the fixing member 5, and the fixing member 5 fixes the second feeding assembly 3 to the bottom of the feeding balun 8.

In this embodiment, the second feeding assembly 3 is supported by the fixing member 5, so that the transmission line 4 and the second feeding assembly 3 are fixed to avoid displacement in actual application.

In the radiation unit assembly provided by the embodiment of the present invention, one end of the first feed plate and the second feed plate are connected to the half-wave oscillator, and the other end passes through different cavities inside the feed balun from top to bottom and then extends out from the bottom of the feed balun, one end of the two transmission lines are respectively connected to the lower parts of the first feed plate and the second feed plate extending from the bottom of the feed balun to form a one-to-two power divider, the other ends of the two transmission lines are respectively connected to the tops of the first feed column and the second feed column, and the bottom ends of the first feed plate and the second feed column serve as one port, and the bottom ends of the first feed column and the second feed column serve as another port, and these structures cooperate with each other to form a multiplexed dual-polarization radiation unit assembly integrating electromagnetic wave radiation and feeding functions.

As shown in Figures 4 to 7, an embodiment of the present invention further provides an antenna, which includes: a phase-shift network component 7 and a radiating unit array composed of several radiating unit components 6 described in the aforementioned embodiments arranged thereon; the phase-shift network component 7 includes two phase-shift networks operating in different frequency bands, and the first feeding component of each radiating unit component 6 is electrically connected to the output end of the phase-shift network of one frequency band, and the second feeding component is electrically connected to the output end of the phase-shift network of another frequency band.

The radiation unit array may be a linear array or a rectangular array, and the radiation unit assembly may be the aforementioned multiplexed dual-polarization radiation unit assembly.

In this embodiment, a plurality of radiation unit components constitute a radiation unit array and are directly fixed on a phase shift network component operating in different frequency bands. The network structure of the entire antenna is simple, with fewer connection points and welding points, and is suitable for mass production.

Furthermore, as shown in Figures 6 and 7, two phase shift networks are stacked up and down, the upper phase shift network 9 and the lower phase shift network 10 operate in different frequency bands, and the left and right parts of each phase shift network correspond to different polarizations of the antenna (positive 45° polarization and negative 45° polarization).

The first feeding assembly and the second feeding assembly of each radiating unit assembly are respectively electrically connected to the output ends of the upper phase-shifting network and the lower phase-shifting network to realize the multiplexing of the same radiating unit assembly, and there is no need to separately connect the half-wave dipole to the combiner. At the same time, the cable structure connecting the phase shifter and the radiating unit can be minimized, thereby realizing the simplified design of the combiner multiplexing antenna.

Specifically, one end of the first feeding component of each radiation unit component passes through the back of the radiation unit, passes through the upper phase-shift network 9, and is inserted into the lower phase-shift network 10 to be electrically connected to its output end; one end of the second feeding component of each radiation unit component passes through the back of the radiation unit, is inserted into the upper phase-shift network 9 to be electrically connected to its output end.

In this embodiment, by multiplexing dual-polarized radiation unit components in combination with upper and lower stacked phase-shifting networks working in different frequency bands, two feeding systems are acted on to form two independently working antennas, which can reduce the number of antenna arrays, simplify the antenna radiation array layout, reduce the assembly process, and reduce the weight of the antenna.

In a specific embodiment, the phase-shifting network component also includes a shell 11; the shell 11 is divided into two layers of inner cavities, the upper phase-shifting network 9 is placed in the upper inner cavity, the lower phase-shifting network 10 is placed in the lower inner cavity, and the multiplexed dual-polarization radiation unit component 6 is fastened to the upper surface of the shell 11.

In a specific implementation, each phase shift network includes a signal transmission network and a component that can slide relative to the signal transmission network and is used to shift the phase of the signal transmission network.

In a specific implementation, the phase-shift network component further includes a filter circuit disposed at an output end of each phase-shift network.

In this embodiment, by providing a filter circuit in the stacked phase-shifting networks and eliminating the combiner of the multiplexed radiation unit, the network structure of the antenna is simplified, and the assembly process and complexity of the whole device are reduced.

In a specific implementation, the operating frequency bands of the two phase shift networks are selected from 1695-2170 MHz/2490-2690 MHz, 1427-2170 MHz/2490-2690 MHz, or 1427-1880 MHz/2300-2690 MHz.

In this embodiment, three options are provided for the operating frequency bands of the two phase shift networks, namely 1695-2170MHz/2490-2690MHz, 1427-2170MHz/2490-2690MHz and 1427-1880MHz/2300-2690MHz. Those skilled in the art can select one of the frequency band ranges according to actual needs and set the operating frequency bands of the two phase shift networks within the selected frequency band range.

The antenna provided by the embodiment of the present invention aims at the current demand for miniaturization and high performance of broadband multi-frequency antennas. By directly arranging a multiplexed dual-polarized radiation unit array on a phase-shifting network stacked up and down and working in different frequency bands, two independently working antennas are formed. The working frequency band can be selected within different frequency bands according to demand, which can achieve simplified antenna production and assembly, easy operation and high efficiency. Moreover, the multiplexed dual-polarized radiation unit array is integrated with the phase-shifting network feeding connection structure, so that there is no need to weld a phase-matching cable between the phase-shifting network and the radiation unit, thereby eliminating the electroplating step, reducing the processing steps and difficulty of the phase-shifting network, and achieving cost reduction.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims (12)

1. A radiation unit component, characterized in that it includes: a half-wave oscillator, a feeding balun, a transmission line, a first feeding component and a second feeding component; wherein the feeding balun is fixed at the bottom of the half-wave oscillator and has a cavity inside, the first feeding component passes through the half-wave oscillator and the internal cavity of the feeding balun from top to bottom and then extends from the bottom of the feeding balun, the second feeding component is arranged at the bottom of the feeding balun, and the first feeding component is connected to the half-wave oscillator and to the second feeding component through the transmission line; the first feeding component is electrically connected to the phase shift network output end of one frequency band in the phase shift network component, the second feeding component is electrically connected to the phase shift network output end of another frequency band in the phase shift network component, and the phase shift network component includes two phase shift networks operating in different frequency bands. 2. The radiation unit assembly according to claim 1 is characterized in that the first feeding assembly includes a first feeding plate and a second feeding plate, and the second feeding assembly includes a first feeding post and a second feeding post; wherein the first feeding plate and the second feeding plate respectively pass through different cavities inside the half-wave oscillator and the feeding balun from top to bottom and extend from the bottom of the feeding balun, and the tops of the first feeding plate and the second feeding plate are electrically connected or coupled to the half-wave oscillator, and the lower parts extending from the bottom of the feeding balun are respectively connected to the tops of the first feeding post and the second feeding post through a transmission line. 3. The radiation unit assembly according to claim 2 is characterized in that the first feed plate and the second feed plate are both long strip structures with through holes at the bottom; the first feed post and the second feed post are both nail-shaped structures with the tips facing downward; one ends of the two transmission lines are respectively inserted into the through holes at the bottom of the first feed plate and the second feed plate and welded at the through holes, and the other ends are respectively welded to the top of the first feed post and the second feed post. 4. The radiation unit assembly according to claim 3 is characterized in that the polarizations of the first feeding plate and the second feeding post are orthogonal; the polarizations of the first feeding post and the second feeding plate are orthogonal. 5. The radiation unit assembly according to claim 3 is characterized in that the transmission line is specifically a coaxial cable transmission line and is U-shaped; the openings of the two U-shaped transmission lines are opposite and symmetrically arranged, and the middle parts of the two U-shaped transmission lines extend outward and protrude from the side of the feed balun. 6. The radiation unit assembly according to any one of claims 1-5 is characterized in that the half-wave dipole is specifically two groups of half-wave dipoles with orthogonal polarizations, and the two arms of each group of half-wave dipoles are symmetrically distributed metal parts. 7. The radiation unit assembly according to claim 6, characterized in that each metal piece is a rectangular sheet structure, on which a plurality of through holes of a preset shape are opened. 8. The radiation unit assembly according to any one of claims 1-5 is characterized in that it also includes: a fixing member arranged at the bottom of the feed balun; the first feed assembly and the second feed assembly both pass through the fixing member, and the fixing member fixes the second feed assembly to the bottom of the feed balun. 9. An antenna, characterized in that it comprises: a phase-shift network component and a radiating unit array composed of a plurality of radiating unit components as described in any one of claims 1 to 8 arranged thereon; the phase-shift network component comprises two phase-shift networks operating in different frequency bands, the first feeding component of each radiating unit component is electrically connected to the output end of the phase-shift network of one frequency band, and the second feeding component is electrically connected to the output end of the phase-shift network of another frequency band. 10. The antenna according to claim 9, characterized in that each phase shift network comprises a signal transmission network and a component that can slide relative to the signal transmission network and is used for phase shifting of the signal transmission network. 11. The antenna according to claim 10, characterized in that the phase shift network component further comprises a filter circuit arranged at the output end of each phase shift network. 12. The antenna according to claim 9, characterized in that the operating frequency bands of the two phase shift networks are selected from 1695-2170 MHz/2490-2690 MHz, 1427-2170 MHz/2490-2690 MHz or 1427-1880 MHz/2300-2690 MHz.