CN217334399U - Broadband high-polarization isolation antenna and antenna array - Google Patents
Broadband high-polarization isolation antenna and antenna array Download PDFInfo
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- CN217334399U CN217334399U CN202122594927.0U CN202122594927U CN217334399U CN 217334399 U CN217334399 U CN 217334399U CN 202122594927 U CN202122594927 U CN 202122594927U CN 217334399 U CN217334399 U CN 217334399U
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- 229910052751 metal Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
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- 229920000647 polyepoxide Polymers 0.000 description 1
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Abstract
The utility model relates to a wide band high polarization isolation antenna and antenna array, antenna include first antenna and second antenna, and first antenna and second antenna all include base plate, irradiator and feed structure, are equipped with the ascending first recess of opening in the base plate axial of first antenna, are equipped with the decurrent second recess of opening in the base plate axial of second antenna, the length of first recess with the sum of the length of second recess does the height of the base plate of first antenna, the base plate of first antenna with the base plate of second antenna passes through first recess with the second recess is the fixed joint of cross, the irradiator is fixed to be located one side of base plate, the irradiator is equipped with the gradual change opening on the radiation direction, the both sides of irradiator all be equipped with from the side to the U-shaped gap that the gradual change opening extends. Through first antenna and the joint of second antenna that all have the U-shaped gap, realized that the antenna has gain height, and radiation stability and isolation are high performance.
Description
Technical Field
The utility model relates to an antenna technology field especially relates to a wide band high polarization isolation antenna and antenna array.
Background
The antenna is a key component for radiating and receiving energy in a modern wireless communication system, and because wireless communication devices all need the antenna to transmit and receive signals, the signal transmitting and receiving capacity of the antenna often directly determines the performance of the wireless communication system.
In order to increase the capacity of a communication system, a polarization diversity technology is generally adopted, and the working efficiency of an antenna is improved by designing a broadband dual-polarized antenna. One of the difficulties in designing a broadband dual-polarized antenna is: the mutual influence between two antennas with different polarizations is controlled under the condition that each polarized antenna meets the working characteristics, so that the requirements on the indexes of antenna isolation, cross polarization and the like are provided. The isolation of the dual-polarized antenna is improved mainly by reducing the current influence between two feed ports through a reasonably designed feed mode, the isolation of the antenna is larger when the current influence of the two ports is smaller, and the isolation is improved by generally enabling two feed lines to be orthogonal to each other in engineering design. Another difficulty in designing a broadband dual-polarized antenna is: not only is the impedance matching bandwidth of the antenna required to meet the requirement of a wide frequency band, but also the radiation characteristic of the antenna is required to meet the requirement in the wide frequency band.
Therefore, it is desirable to provide a broadband high-polarization isolation antenna with stable radiation and high isolation and improved low-frequency impedance bandwidth to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a wide band high polarization isolation antenna. The technical problem of each polarized antenna in the prior art that the isolation and the cross polarization performance of the antenna are influenced by controlling the mutual influence between two different polarized antennas under the condition that the polarized antennas meet the working characteristics is solved.
The technical effects of the utility model are through following realization:
the utility model provides a wide band high polarization isolation antenna, includes first antenna and second antenna, first antenna with the second antenna all includes base plate, irradiator and feed structure, the height of the base plate of first antenna with the height of the base plate of second antenna is the same, be equipped with the ascending first recess of opening on the base plate axial of first antenna, be equipped with the decurrent second recess of opening on the base plate axial of second antenna, the length of first recess and the length of second recess sum be the height of the base plate of first antenna, the base plate of first antenna and the base plate of second antenna pass through first recess with the second recess is the fixed joint of cross, the irradiator is fixed to be located one side of base plate, the irradiator is equipped with the gradual change opening on the radiation direction, the irradiator uses the axial of gradual change opening is the symmetry axis and is the symmetrical structure, the size of the gradual change opening is gradually increased in the opening extending direction, a resonant cavity is arranged at the bottom of the gradual change opening, the resonant cavity is close to the bottom of the substrate, U-shaped gaps extending from the side edges to the gradual change opening are arranged on two sides of the radiating body, the U-shaped gaps on two sides of the radiating body are symmetrically arranged by taking the axial direction of the gradual change opening as a symmetry axis, the feed structure is fixedly arranged on the other side of the substrate, and the feed structure is close to the resonant cavity and is arranged at the bottom of the substrate. The U-shaped gaps are arranged on the two sides of the radiating body, so that the low-frequency impedance bandwidth of the antenna is improved on the basis of not changing the size of the antenna, the antenna has the characteristic of larger bandwidth, the gain flatness of the antenna is improved, the signal receiving and transmitting performance of the antenna is improved, and the miniaturization of the antenna is facilitated; the problem of among the prior art because the low frequency channel receives the restriction of antenna size, when the antenna horizontal dimension is too little, influence the impedance match of low frequency channel, can not realize sufficient working bandwidth, influence antenna signal receiving and dispatching performance is solved. Through the cross connection of the first antenna and the second antenna, the high-polarization isolation antenna has the characteristics of high gain, high isolation and the like. The U-shaped gaps on the two sides of the radiator are symmetrically arranged by taking the axial direction of the gradual change opening as a symmetry axis, so that the symmetry of a directional diagram is ensured.
Further, the U-shaped gap includes a first gap and a second gap, the first gap is parallel to the second gap, the length of the second gap is smaller than that of the first gap, one end of the first gap is located on the side of the radiator, and the other end of the first gap is communicated with the second gap.
Further, the length of the U-shaped slot is 1/4 of the wavelength of the electromagnetic wave emitted by the broadband high-polarization-isolation antenna.
Further, the feed structure includes right-angle shape feed structure and with fan-shaped feed structure, right-angle shape feed structure includes first right-angle side and second right-angle side of interconnect, the axial on first right-angle side with the axial on second right-angle side mutually perpendicular, first right-angle side with the summit of fan-shaped feed structure is connected, the second right-angle side is located the bottom of wide band high polarization isolation antenna is used for being connected with the feed port. The fan-shaped feed structure is additionally arranged at the tail end of the right-angle feed structure, so that the coupling degree of the gradual change opening on the other side of the substrate is improved, the standing-wave ratio of the antenna is reduced, the antenna is favorably matched, and the radiation of electromagnetic waves is favorably realized.
Further, the second cathetus of the feed structure is located at one side of the radiator of the second antenna. Stagger about the second right-angle side through setting up the second right-angle side of first antenna and second antenna is in the space, has avoided first antenna and second antenna to interfere at the feed port, is convenient for produce line welding installation.
Further, the first right-angle side axial direction is a symmetry axis of the fan-shaped feed structure, and the first right-angle side axial direction is perpendicular to the axial direction of the gradual change opening.
Furthermore, the vertex of the fan-shaped feed structure and the position of the gradual change opening close to the resonant cavity are overlapped in the Y direction, and the fan-shaped feed structure and the second right-angle side are respectively positioned at two axial sides of the gradual change opening.
Furthermore, the vertex angle of the fan-shaped feed structure ranges from 70 degrees to 85 degrees.
Further, the resonant cavity is a circular structure, and the diameter of the circular structure is 1/4 of the wavelength of the electromagnetic wave emitted by the broadband high-polarization-isolation antenna.
In addition, an antenna array is also provided, which includes the above-mentioned wideband high polarization isolation antenna, and a plurality of the wideband high polarization isolation antennas are jointly fed to form the antenna array.
As described above, the utility model discloses following beneficial effect has:
1) through the cross connection of the first antenna and the second antenna, the high-polarization isolation antenna has the characteristics of high gain, high isolation and the like.
2) Stagger about the second right-angle side through setting up the second right-angle side of first antenna and second antenna is in the space, has avoided first antenna and second antenna to interfere at the feed port, is convenient for produce line welding installation.
3) The U-shaped gaps are arranged on the two sides of the radiating body, so that the low-frequency impedance bandwidth of the antenna is improved on the basis of not changing the size of the antenna, the antenna has the characteristic of larger bandwidth, the gain flatness of the antenna is improved, the signal receiving and transmitting performance of the antenna is improved, and the miniaturization of the antenna is facilitated; the problem of among the prior art because the low frequency channel receives the restriction of antenna size, when the antenna horizontal dimension is too little, influence the impedance match of low frequency channel, can not realize sufficient working bandwidth, influence antenna signal receiving and dispatching performance is solved.
4) The U-shaped gaps on the two sides of the radiator are symmetrically arranged by taking the axial direction of the gradual change opening as a symmetry axis, so that the symmetry of a directional diagram is ensured.
5) The fan-shaped feed structure is additionally arranged at the tail end of the right-angle feed structure, so that the coupling degree of the gradual change opening on the other side of the substrate is improved, the standing-wave ratio of the antenna is reduced, the antenna is matched favorably, and the radiation of electromagnetic waves is favorably realized.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic diagram illustrating an overall structure of a broadband high-polarization-isolation antenna according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a first antenna on a side of a radiator according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a first antenna on a side of a feed structure according to an embodiment of the present disclosure;
fig. 4 is a simulated VSWR graph of a wideband high polarization isolation antenna according to an embodiment of the present disclosure;
fig. 5 is a simulation result of isolation between two feeding ports of a wideband high-polarization-isolation antenna according to an embodiment of the present disclosure.
Wherein the reference numerals in the figures correspond to:
the antenna comprises a first antenna 1, a second antenna 2, a substrate 3, a radiator 4, a feed structure 5, a right-angle feed structure 51, a first right-angle edge 511, a second right-angle edge 512, a sector feed structure 52, a gradual change opening 6, a wave guide region 61, a radiation region 62, a U-shaped gap 7, a first gap 71, a second gap 72 and a resonant cavity 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1:
as shown in fig. 1-3, a broadband high-polarization isolation antenna includes a first antenna 1 and a second antenna 2, both the first antenna 1 and the second antenna 2 include a substrate 3, a radiator 4 and a feed structure 5, the height of the substrate 3 of the first antenna 1 is the same as the height of the substrate 3 of the second antenna 2, a first groove with an upward opening is axially disposed on the substrate 3 of the first antenna 1, a second groove with a downward opening is axially disposed on the substrate 3 of the second antenna 2, the sum of the length of the first groove and the length of the second groove is the height of the substrate 3 of the first antenna 1, the substrate 3 of the first antenna 1 and the substrate 3 of the second antenna 2 are in cross fixed clamping connection through the first groove and the second groove, the radiator 4 is fixedly disposed on one side of the substrate 3, the radiator 4 is provided with a gradual opening 6 in the radiation direction, the radiator 4 is in a symmetrical structure with the axial direction of the gradual opening 6 as a symmetry axis, gradual change opening 6 size is the grow gradually on the opening extending direction, gradual change opening 6's bottom is equipped with resonant cavity 8, resonant cavity 8 is close to the bottom setting of base plate 3, the both sides of irradiator 4 all are equipped with the U-shaped gap 7 that extends to gradual change opening 6 from the side, the U-shaped gap 7 of irradiator 4 both sides uses gradual change opening 6's axial to be the symmetry setting as the symmetry axis, the fixed opposite side of locating base plate 3 of feed structure 5, feed structure 5 is close to the bottom that resonant cavity 8 set up at base plate 3.
The first antenna 1 and the second antenna 2 are connected in a crisscross mode, so that the high-polarization isolation antenna has the characteristics of high gain, high isolation and the like.
It should be noted that the tapered opening 6 can be divided into two parts according to different functions, one part is a wave guide region 61 with equal width, i.e. a slot line, the other part is a radiation region 62 with tapered width, the wave guide region 61 is a narrow opening end, the operating frequency band corresponding to the narrow opening end is high frequency, the radiation region 62 is a wide opening end, and the operating frequency band corresponding to the wide opening end is low frequency. For the slot line operating in the matching state, if the slot width is far less than half of the operating wavelength, the energy therein will be confined between the gradual change openings 6 in the radiator 4 and will not be radiated out, so that the radiation characteristic that the slot line width is far greater than half of the operating wavelength is utilized, and the gradually increasing slot line width forms the radiation region 62 to radiate outwards or receive electromagnetic waves inwards.
The transverse dimension of the antenna should be more than half a wavelength of the lowest frequency, so that the transverse dimension of the antenna determines the low frequency band of the impedance bandwidth. The U-shaped gaps 7 are arranged on the two sides of the radiating body 4, so that the low-frequency impedance bandwidth of the antenna is increased on the basis of not changing the size of the antenna, the antenna has the characteristic of larger bandwidth, the gain flatness of the antenna is improved, and the signal receiving and transmitting performance of the antenna is improved.
Specifically, the left side and the right side of the radiator 4 are both provided with U-shaped slits 7 which are symmetrical about the central axis of the antenna and extend from the side edges to the gradual change opening 6, so that the consistency of current distribution in the antenna and the symmetry of a directional diagram are ensured, and the radiation performance of the antenna is improved.
Specifically, the substrate 3 is a dielectric plate made of a material such as phenol resin, epoxy resin, or polytetrafluoroethylene, preferably FR4 material, the radiator 4 may be a metal plated layer on one side of the dielectric plate, or may be a metal plate as it is, and the metal material is preferably copper.
Specifically, the right-angled feed structure 51 of the feed structure 5 is arranged at the bottom of the antenna, so as to be connected with an SMA connector or other connectors conveniently, and facilitate assembly; and compared with the side edge of the antenna, the antenna is more beneficial to saving space and reducing coupling among the antennas.
Preferably, the U-shaped slot 7 includes a first slot 71 and a second slot 72, the first slot 71 and the second slot 72 are parallel, the length of the second slot 72 is smaller than that of the first slot 71, one end of the first slot 71 is located at the side of the radiator 4, and the other end of the first slot 71 is communicated with the second slot 72.
Preferably, the length of the U-shaped slot 7 is 1/4 of the wavelength of the electromagnetic wave emitted by the broadband high-polarization-isolation antenna.
Specifically, as shown in fig. 1-3, the first antenna 1 and the second antenna 2 have the same size, the transverse size of the two antennas is 62mm, the longitudinal size of the two antennas is 64mm, and the length of the U-shaped slot 7 is 30-35 mm. The transverse dimension of the antenna is the length of the antenna, the length direction is the X direction, the longitudinal dimension of the antenna is the height of the antenna, the height direction is the Z direction, and the Y direction is the direction perpendicular to the X direction and the Z direction, namely the direction perpendicular to the plane of the substrate 3.
Preferably, the feed structure 5 comprises a right-angle feed structure 51 and a fan-shaped feed structure 52, the right-angle feed structure 51 comprises a first right-angle side 511 and a second right-angle side 512 which are connected with each other, the axial direction of the first right-angle side 511 and the axial direction of the second right-angle side 512 are perpendicular to each other, the first right-angle side 511 is connected with the top point of the fan-shaped feed structure 52, and the second right-angle side 512 is arranged at the bottom of the broadband high-polarization isolation antenna and is used for being connected with a feed port. By additionally arranging the fan-shaped feed structure 52 at the tail end of the right-angle feed structure 51, the coupling degree with the gradual change opening 6 on the other side of the substrate 3 is improved, the standing-wave ratio of the antenna is reduced, and the antenna is favorably matched, so that the radiation of electromagnetic waves is favorably realized.
Specifically, the feed structure 5 may be a metal plating layer on one side of the dielectric plate, or may be a metal plate directly, and the metal material is preferably copper.
Specifically, the first right-angle side 511 is located in the horizontal direction, and the second right-angle side 512 is located in the vertical direction.
Preferably, the second cathetus 512 of the right-angle feed structure 51 is located on the side of the radiator 4 of the second antenna 2. Stagger about the second right-angle side 512 through setting up first antenna 1 and second antenna 2's second right-angle side 512 is in the space, has avoided first antenna 1 and second antenna 2 to interfere at the feed port, is convenient for produce line welding installation.
Preferably, the first right-angle side 511 is axially a symmetry axis of the sector feed structure 52, and the first right-angle side 511 is axially perpendicular to the axial direction of the tapered opening 6.
Preferably, the vertex of the sector feed structure 52 and the location of the tapered opening 6 near the resonant cavity 8 overlap in the Y-direction, and the sector feed structure 52 and the second cathetus 512 are located on both axial sides of the tapered opening 6.
Preferably, the top angle of the sector feed structure 52 is 70-85 degrees.
Specifically, the radius of the sector feed structure 52 is 4-5 mm, preferably 4.5 mm.
Preferably, the resonant cavity 8 is a circular structure with a diameter of 1/4 mm of the wavelength of the electromagnetic wave emitted by the broadband high-polarization-isolation antenna.
Specifically, the distance from the edge of the sector feed structure 52 adjacent to the resonant cavity 8 to the nearest position of the cavity wall of the resonant cavity 8 is 1-3 mm.
In this embodiment, based on the utility model discloses a wide band high polarization isolation antenna that the thought was designed out, establish the model that corresponds with the wide band high polarization isolation antenna of this application and simulate the model, as shown in fig. 3, obtain standing wave ratio (VSWR) simulation result to the wide band high polarization isolation antenna of this application.
The standing-wave ratio simulation result in fig. 3 illustrates that, by adopting the broadband high-polarization-isolation antenna in the present application, the standing-wave ratio VSWR in the frequency range of 1.7GHz-6GHz ultra-wideband is less than 1.7, so that on the basis of not changing the size of the antenna, the low-frequency impedance bandwidth of the antenna is increased, the antenna has the characteristic of larger bandwidth, the performance of receiving and transmitting antenna signals is improved, and the problems that in the prior art, because the low frequency band is limited by the size of the antenna, when the transverse size of the antenna is too small, the impedance matching of the low frequency band is affected, sufficient working bandwidth cannot be realized, and the performance of receiving and transmitting antenna signals is affected are solved.
Furthermore, the isolation simulation result of two feeding ports of the broadband high-polarization isolation antenna designed based on the idea of the present invention is shown in fig. 4. According to simulation results, the isolation is lower than-28 dB in the whole frequency band of 1.7GHz-6GHz, and the high isolation characteristic of the antenna is realized.
Example 2:
an antenna array includes the wideband high polarization isolation antenna in embodiment 1, and multiple wideband high polarization isolation antennas are jointly fed to form an antenna array, so that the antenna array has the advantages of high gain, stable radiation, high isolation, and the like.
As described above, the utility model discloses following beneficial effect has:
1) through the cross connection of the first antenna and the second antenna, the high-polarization isolation antenna has the characteristics of high gain, high isolation and the like.
2) Stagger about the second right-angle side through setting up the second right-angle side of first antenna and second antenna is in the space, has avoided first antenna and second antenna to interfere at the feed port, is convenient for produce line welding installation.
3) The U-shaped gaps are arranged on the two sides of the radiating body, so that the low-frequency impedance bandwidth of the antenna is improved on the basis of not changing the size of the antenna, the antenna has the characteristic of larger bandwidth, the gain flatness of the antenna is improved, the signal receiving and transmitting performance of the antenna is improved, and the miniaturization of the antenna is facilitated; the problem of among the prior art because the low band receives the restriction of antenna size, when the antenna horizontal size is too little, influence the impedance match of low band, can not realize sufficient working bandwidth, influence antenna signal receiving and dispatching performance is solved.
4) The U-shaped gaps on the two sides of the radiator are symmetrically arranged by taking the axial direction of the gradual change opening as a symmetry axis, so that the symmetry of a directional diagram is ensured.
5) The fan-shaped feed structure is additionally arranged at the tail end of the right-angle feed structure, so that the coupling degree of the gradual change opening on the other side of the substrate is improved, the standing-wave ratio of the antenna is reduced, the antenna is matched favorably, and the radiation of electromagnetic waves is favorably realized.
Although the present invention has been described in connection with the preferred embodiments, it is not intended to limit the invention to the embodiments described herein, but rather, to include various changes and modifications without departing from the scope of the invention.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The embodiments and features of the embodiments described herein above can be combined with each other without conflict.
The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a high polarization isolation degree antenna of wide band, its characterized in that includes first antenna (1) and second antenna (2), first antenna (1) with second antenna (2) all include base plate (3), irradiator (4) and feed structure (5), the height of base plate (3) of first antenna (1) with the height of base plate (3) of second antenna (2) is the same, be equipped with the ascending first recess of opening on base plate (3) axial of first antenna (1), be equipped with the second recess that the opening is decurrent on base plate (3) axial of second antenna (2), the length of first recess with the sum of the length of second recess is the height of base plate (3) of first antenna (1), base plate (3) of first antenna (1) with base plate (3) of second antenna (2) pass through first recess with the second recess is cross fixed joint, the radiator (4) is fixedly arranged on one side of the substrate (3), a gradual change opening (6) is arranged on the radiator (4) in the radiation direction, the radiator (4) is in a symmetrical structure by taking the axial direction of the gradual change opening (6) as a symmetrical axis, the size of the gradual change opening (6) is gradually increased in the opening extending direction, a resonant cavity (8) is arranged at the bottom of the gradual change opening (6), the resonant cavity (8) is arranged close to the bottom of the substrate (3), both sides of the radiator (4) are provided with U-shaped gaps (7) extending from the side edges to the gradual change opening (6), the U-shaped gaps (7) on the two sides of the radiator (4) are symmetrically arranged by taking the axial direction of the gradual change opening (6) as a symmetry axis, the feed structure (5) is fixedly arranged on the other side of the substrate (3), the feed structure (5) is arranged at the bottom of the substrate (3) close to the resonant cavity (8).
2. The broadband high-polarization-isolation antenna according to claim 1, wherein the U-shaped slot (7) comprises a first slot (71) and a second slot (72), the first slot (71) and the second slot (72) are parallel, the length of the second slot (72) is smaller than that of the first slot (71), one end of the first slot (71) is located on the side of the radiator (4), and the other end of the first slot (71) is communicated with the second slot (72).
3. The broadband high polarization isolation antenna of claim 2, wherein the length of the U-shaped slot (7) is 1/4 times the wavelength of the electromagnetic wave emitted from the broadband high polarization isolation antenna.
4. The wideband high polarization isolation antenna of claim 1, wherein the feed structure (5) comprises a right-angled feed structure (51) and a sector-shaped feed structure (52), the right-angled feed structure (51) comprises a first right-angled side (511) and a second right-angled side (512) connected to each other, an axial direction of the first right-angled side (511) and an axial direction of the second right-angled side (512) are perpendicular to each other, the first right-angled side (511) is connected to a vertex of the sector-shaped feed structure (52), and the second right-angled side (512) is provided at a bottom of the wideband high polarization isolation antenna for connecting to a feed port.
5. The broadband high polarization isolation antenna of claim 4, wherein the second cathetus (512) of the right-angled feed structure (51) is located on the side of the radiator (4) of the second antenna (2).
6. The broadband high polarization isolation antenna of claim 5, wherein the first right-angle side (511) is axially the symmetry axis of the sector feed structure (52), and the first right-angle side (511) is axially perpendicular to the axial direction of the tapered opening (6).
7. The broadband high polarization isolation antenna of claim 6, wherein the vertex of the sector feed structure (52) and the location of the tapered opening (6) near the resonant cavity (8) overlap in the Y-direction, and the sector feed structure (52) and the second cathetus (512) are located on both axial sides of the tapered opening (6), respectively.
8. The broadband high polarization isolation antenna according to claim 4, wherein the top angle of the sector feed structure (52) is 70-85 degrees.
9. The broadband high polarization isolation antenna according to claim 1, wherein the resonant cavity (8) is a circular structure with a diameter of 1/4 mm of the wavelength of the electromagnetic wave emitted from the broadband high polarization isolation antenna.
10. An antenna array comprising a plurality of broadband high polarization isolation antennas according to any one of claims 1-9, a plurality of the broadband high polarization isolation antennas being jointly fed to form the antenna array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122594927.0U CN217334399U (en) | 2021-10-27 | 2021-10-27 | Broadband high-polarization isolation antenna and antenna array |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122594927.0U CN217334399U (en) | 2021-10-27 | 2021-10-27 | Broadband high-polarization isolation antenna and antenna array |
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| CN217334399U true CN217334399U (en) | 2022-08-30 |
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| CN202122594927.0U Active CN217334399U (en) | 2021-10-27 | 2021-10-27 | Broadband high-polarization isolation antenna and antenna array |
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