CN112736422B - dual polarized antenna - Google Patents

Abstract

The invention discloses a dual-polarized antenna, which comprises a horizontal radiating unit, a vertical radiating unit, a metal reflecting plate and an inter-frequency combiner, wherein the metal reflecting plate is arranged at the lower end of the dual-polarized antenna, the inter-frequency combiner is arranged on the upper surface of the metal reflecting plate, the horizontal radiating unit comprises a horizontal polarized high-frequency oscillator and a horizontal polarized low-frequency oscillator, the vertical radiating unit comprises a first vertical polarized oscillator and a second vertical polarized oscillator, the first vertical polarized oscillator, the horizontal polarized high-frequency oscillator, the second vertical polarized oscillator and the horizontal polarized low-frequency oscillator are sequentially arranged from top to bottom, the inter-frequency combiner comprises a first connecting end and a second connecting end, the first connecting end is connected with the horizontal polarized high-frequency oscillator through a first coaxial line, and the second connecting end is connected with the horizontal low-frequency oscillator through a second coaxial line. Therefore, the dual-polarized antenna has the characteristic of simple structure, and the implementation of the dual-polarized antenna is beneficial to improving the integration degree of the dual-polarized antenna.

Description

dual polarized antenna

technical field

The invention relates to the technical field of communications, in particular to a dual-polarized antenna.

Background technique

With the rapid development of communication technology, especially the arrival of the 5G era, the demand for highly integrated broadband antennas is becoming more and more obvious in the market. At present, most dual-polarized antennas consisting of vertical polarization and horizontal polarization cover The range is relatively narrow in the 800-2700MHZ frequency band. In particular, the horizontally polarized vibrator can only cover 1710-2690MHZ; and it cannot be directly applied to the 5G frequency band. Dual-polarized antennas that meet the signal requirements of each frequency band, have a simple structure, and are inexpensive to manufacture are rare and in short supply. It can be seen that how to make the structure of the dual-polarized antenna simple and improve its integration level is a technical problem that needs to be solved urgently.

Contents of the invention

The technical problem to be solved by the present invention is to provide a dual-polarized antenna with a simple structure, and the implementation of the present invention is conducive to improving the degree of integration of the dual-polarized antenna.

In order to solve the above technical problems, the present invention discloses a dual-polarized antenna, which includes a horizontal radiation unit, a vertical radiation unit, a metal reflector and a different-frequency combiner,

The metal reflector is arranged at the lower end of the dual-polarized antenna, and the inter-frequency combiner is arranged on the upper surface of the metal reflector,

The horizontal radiation unit includes a horizontally polarized high frequency oscillator and a horizontally polarized low frequency oscillator,

The vertical radiating unit includes a first vertical polarizer and a second vertical polarizer,

The first vertically polarized oscillator, the horizontally polarized high frequency oscillator, the second vertically polarized oscillator and the horizontally polarized low frequency oscillator are arranged sequentially from top to bottom,

The inter-frequency combiner includes a first connection end and a second connection end,

The first connection end is connected to the horizontally polarized high-frequency vibrator through a first coaxial line, and the second connection end is connected to the horizontal low-frequency vibrator through a second coaxial line.

It can be seen that the dual-polarized antenna of the present invention has the characteristics of simple structure, and by rationally arranging the horizontal radiation unit, the vertical radiation unit, the metal reflector and the multi-frequency combiner, it is beneficial to make the internal structure of the dual-polarized antenna It is more compact and helps to improve the miniaturization degree of the dual-polarized antenna, thereby helping to improve its integration degree.

As an optional implementation mode, in the present invention, the horizontally polarized high-frequency vibrator includes a first substrate, N first line slots arranged on the upper surface of the first substrate, and N first slots arranged on the first substrate. a first power divider on the lower surface of the substrate,

The first line slot part is composed of bent microstrip line slots,

The first power divider is provided with a first input terminal and N first output terminals, and the first output terminals correspond to the first wire slot part one by one.

As an optional implementation manner, in the present invention, the horizontally polarized low-frequency vibrator includes a second substrate, N second line groove parts arranged on the upper surface of the second substrate, and The second power divider on the lower surface,

The second line slot part is composed of bent microstrip line slots,

The second power divider is provided with a second input terminal and N second output terminals, and the second output terminals correspond to the second wire slot part one by one.

As an optional implementation, in the present invention, the body of the second vertically polarized vibrator is in the shape of a hollow truncated cone, and the lower edge of the body of the second vertically polarized vibrator is provided with N an extension part extending downward relative to the lower edge of the body of the second vertically polarized vibrator.

As an optional implementation, in the present invention, the first vertically polarized oscillator, the horizontally polarized high frequency oscillator, the second vertically polarized oscillator and the horizontally polarized low frequency oscillator They are connected through several hexagonal plastic pipe cylinders sequentially from top to bottom.

As an optional implementation mode, in the present invention, the lower end of the first vertically polarized vibrator is in the shape of an inverted cone, and the lower end of the first vertically polarized vibrator is connected through the The middle part of the horizontally polarized high-frequency oscillator, the second vertically polarized oscillator, and the horizontally polarized low-frequency oscillator.

As an optional implementation manner, in the present invention, the inter-frequency combiner further includes a third connection end, and the third connection end is connected to a coaxial cable to complete power feeding.

As an optional implementation manner, in the present invention, the inter-frequency combiner is provided with several sections of microstrip lines, and the microstrip lines intersect to form multiple junctions.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a schematic diagram of the overall structure of a dual-polarized antenna according to an embodiment of the present invention;

Fig. 2 is a top view of the horizontally polarized high-frequency vibrator of the dual-polarized antenna shown in Fig. 1;

Fig. 3 is a bottom view of the horizontally polarized high-frequency vibrator of the dual-polarized antenna shown in Fig. 1;

Fig. 4 is a top view of a second vertically polarized vibrator of the dual-polarized antenna shown in Fig. 1;

FIG. 5 is a top view of the multi-frequency combiner of the dual-polarized antenna shown in FIG. 1 .

Detailed ways

In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

A dual-polarized antenna according to an embodiment of the present invention, as shown in FIG. 1 , includes a horizontal radiating unit, a vertical radiating unit, a metal reflector 600 and an inter-frequency combiner 500,

The metal reflector 600 is arranged at the lower end of the dual-polarized antenna, and the inter-frequency combiner 500 is arranged on the upper surface of the metal reflector 600,

The horizontal radiation unit includes a horizontally polarized high-frequency oscillator 200 and a horizontally polarized low-frequency oscillator 400,

The vertical radiation unit includes a first vertical polarizer 100 and a second vertical polarizer 300,

The first vertically polarized oscillator 100, the horizontally polarized high frequency oscillator 200, the second vertically polarized oscillator 300, and the horizontally polarized low frequency oscillator 400 are arranged sequentially from top to bottom,

As shown in FIG. 5 , the inter-frequency combiner 500 includes a first connection end 520 and a second connection end 530,

The first connecting end 520 is connected to the horizontally polarized high frequency vibrator 200 through the first coaxial line, and the second connecting end 530 is connected to the horizontal low frequency vibrator 400 through the second coaxial line.

In the embodiment of the present invention, by vertically arranging the horizontal radiating unit, the vertical radiating unit, the metal reflector and the multi-frequency combiner, it is beneficial to optimize the arrangement of the various components of the dual-polarized antenna, thereby facilitating the realization of The miniaturization of the dual polarized antenna.

In the embodiment of the present invention, the horizontal radiation unit is used to realize the polarization radiation in the horizontal direction of the dual-polarization antenna, and the vertical radiation unit is used to realize the polarization radiation in the vertical direction of the dual-polarization antenna. The horizontal radiation unit includes a horizontally polarized high-frequency oscillator and a horizontally polarized low-frequency oscillator, wherein the horizontally polarized high-frequency oscillator can correspond to the working conditions of the high-frequency band, specifically, the high-frequency band can be 3300MHz to 3800MHz; the horizontally polarized low-frequency oscillator It can correspond to the working condition of the high frequency band, specifically, the low frequency band can be 1710MHz to 2690MHz.

In the embodiment of the present invention, the inter-frequency combiner includes a first connection end and a second connection end, the first connection end is connected to the horizontally polarized high-frequency oscillator, and the second connection end is connected to the horizontal low-frequency oscillator, so that the dual-polarization When the antenna switches between the high-frequency band and the low-frequency band, it can have good adaptability, which is beneficial to the stability of the dual-polarized antenna.

It can be seen that the dual-polarized antenna of the embodiment of the present invention has the characteristics of simple structure, and by reasonably arranging the horizontal radiation unit, the vertical radiation unit, the metal reflector and the multi-frequency combiner, it is beneficial to make the dual-polarized antenna The internal structure is more compact, and it is beneficial to improve the miniaturization degree of the dual-polarized antenna, thereby improving its integration degree.

In this embodiment of the present invention, optionally, as shown in FIG. It is connected from top to bottom by several hexagonal plastic pipe cylinders 700 . This makes the connection between the first vertically polarized vibrator, the horizontally polarized high frequency vibrator, the second vertically polarized vibrator and the horizontally polarized low frequency vibrator not closely connected, and there is a certain gap between them, which is conducive to widening the bandwidth.

In the embodiment of the present invention, optionally, as shown in FIG. 5 , the inter-frequency combiner 500 further includes a third connection end 510, and the third connection end 510 is connected to a coaxial cable to complete power feeding.

In the embodiment of the present invention, optionally, as shown in FIG. 5 , the inter-frequency combiner 500 is provided with several sections of microstrip lines 540 , and the microstrip lines 540 intersect to form multiple junctions.

In some specific embodiments of the present invention, as shown in FIG. 2 and FIG. 3 , the horizontally polarized high-frequency vibrator includes a first substrate 210, N first slot parts 220 arranged on the upper surface of the first substrate 210, and a set of The first power divider 230 on the lower surface of the first substrate 210,

The first line slot part 220 is composed of bent microstrip line slots,

The first power divider 230 is provided with a first input terminal and N first output terminals, and the first output terminals are in one-to-one correspondence with the first trunking portion 220 .

In this embodiment, the structure of the first slot part in the horizontally polarized high frequency vibrator can be used as a balun, which is beneficial to realize the coupling and feeding of the horizontally polarized high frequency vibrator; The structure of a power divider is beneficial to match with the first trunking portion, thereby facilitating the realization of the "one divider N" power divider function.

Further, the structure of the horizontally polarized low-frequency vibrator can refer to the structure of the above-mentioned horizontally polarized high-frequency vibrator, specifically, the horizontally polarized low-frequency vibrator includes a second substrate, and N second slots arranged on the upper surface of the second substrate and a second power divider disposed on the lower surface of the second substrate,

The second line slot part is composed of bent microstrip line slots,

The second power divider is provided with a second input terminal and N second output terminals, and the second output terminals are in one-to-one correspondence with the second line slots.

In this embodiment, the structure of the second line groove part in the horizontally polarized low-frequency vibrator can be used as a balun, which is beneficial to realize the coupling and feeding of the horizontally polarized low-frequency vibrator; the second work in the horizontally polarized low-frequency vibrator The structure of the divider is beneficial to match with the second trunking part, thereby facilitating the realization of the "one divides N" power division function.

Wherein, optionally, the first substrate and the second substrate may be PCB boards; further optionally, the microstrip line grooves forming the first wire groove part and the second wire groove part may be arranged on the corresponding The upper surface of the PCB board; as a further option, the first power divider and the second power divider may be composed of several sections of microstrip line slots arranged on the lower surface of the corresponding PCB board.

Wherein, optionally, the number N of the first wire slot part can be 5, correspondingly, the number N of the first output ends of the first power divider is also 5, and the number N of the second wire slot part, is also 5, and the number N of the second output terminals of the second power divider is also 5. Further optionally, the first wire groove parts may be evenly distributed on the upper surface of the first substrate, and the second wire groove parts may be evenly distributed on the upper surface of the second substrate. Correspondingly, the first output of the first power divider The terminals can also be evenly distributed on the lower surface of the first substrate, and the second output terminals of the second power divider can also be evenly distributed on the lower surface of the second substrate.

Still further, as shown in FIGS. 1 and 4 , the body of the second vertically polarized vibrator 300 is in the shape of a hollow truncated cone, and the lower edge of the body of the second vertically polarized vibrator 300 is provided with N extensions 310 , the extension part 310 extends downward relative to the lower edge of the body of the second vertically polarized vibrator 300 .

In this embodiment, the body of the second vertically polarized vibrator is in the shape of a hollow truncated cone, which is conducive to further increasing the gap between the extension of the second vertically polarized vibrator and the first vertically polarized vibrator, Thus, it is beneficial to further widen the bandwidth.

Finally, it should be noted that: a dual-polarized antenna disclosed in the embodiment of the present invention is only a preferred embodiment of the present invention, and is only used to illustrate the technical solution of the present invention, not to limit it; although referring to the aforementioned The embodiment has described the present invention in detail, and those of ordinary skill in the art should understand; it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements , does not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. A dual-polarized antenna, characterized in that, comprises a horizontal radiation unit, a vertical radiation unit, a metal reflector and a frequency-differential combiner, The metal reflector is arranged at the lower end of the dual-polarized antenna, and the inter-frequency combiner is arranged on the upper surface of the metal reflector, The horizontal radiation unit includes a horizontally polarized high frequency oscillator and a horizontally polarized low frequency oscillator, The vertical radiating unit includes a first vertical polarizer and a second vertical polarizer, The first vertically polarized oscillator, the horizontally polarized high frequency oscillator, the second vertically polarized oscillator and the horizontally polarized low frequency oscillator are arranged sequentially from top to bottom, The inter-frequency combiner includes a first connection end and a second connection end, The first connection end is connected to the horizontally polarized high-frequency oscillator through a first coaxial line, and the second connection end is connected to the horizontally polarized low-frequency oscillator through a second coaxial line. 2. The dual-polarized antenna according to claim 1, characterized in that, the horizontally polarized high-frequency vibrator comprises a first substrate, N first slot parts arranged on the upper surface of the first substrate, and a set a first power divider on the lower surface of the first substrate, The first line slot part is composed of bent microstrip line slots, The first power divider is provided with a first input terminal and N first output terminals, and the N first output terminals are in one-to-one correspondence with the N first wire groove parts. 3. The dual-polarized antenna according to claim 2, characterized in that, the horizontally polarized low-frequency vibrator comprises a second substrate, N second slots arranged on the upper surface of the second substrate, and N second slots arranged on the upper surface of the second substrate. The second power divider on the lower surface of the second substrate, The second line slot part is composed of bent microstrip line slots, The second power divider is provided with a second input terminal and N second output terminals, and the N second output terminals correspond to the N second slot parts one by one. 4. The dual-polarized antenna according to claim 3, wherein the body of the second vertically polarized vibrator is in the shape of a hollow truncated cone, and the lower portion of the body of the second vertically polarized vibrator The edge is provided with N extension parts, and the extension parts extend downward relative to the lower edge of the body of the second vertically polarized vibrator. 5. The dual-polarized antenna according to claim 4, wherein the lower end of the first vertically polarized vibrator is in an inverted cone shape, and the lower end of the first vertically polarized vibrator The penetrating connection is in the middle of the horizontally polarized high frequency vibrator, the second vertically polarized vibrator and the horizontally polarized low frequency vibrator. 6. The dual-polarized antenna according to any one of claims 1 to 5, wherein the first vertically polarized dipole, the horizontally polarized high-frequency dipole, and the second vertically polarized The vibrator and the horizontally polarized low-frequency vibrator are connected sequentially from top to bottom through several hexagonal plastic pipe cylinders. 7. The dual-polarized antenna according to any one of claims 1 to 5, wherein the inter-frequency combiner also includes a third connection end, and the third connection end is connected to a coaxial cable to Complete feed. 8. The dual-polarized antenna according to any one of claims 1 to 5, wherein the intersecting microstrip lines form multiple Junction.

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