CN210142716U - Coupling radiation unit and antenna - Google Patents
Coupling radiation unit and antenna Download PDFInfo
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- CN210142716U CN210142716U CN201921400183.0U CN201921400183U CN210142716U CN 210142716 U CN210142716 U CN 210142716U CN 201921400183 U CN201921400183 U CN 201921400183U CN 210142716 U CN210142716 U CN 210142716U
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Abstract
The embodiment of the utility model provides a coupling radiating element and antenna. Wherein, the radiating element includes: the two groups of half-wave oscillator arms, the baluns arranged corresponding to the two groups of half-wave oscillator arms, the two feed sheets penetrating through the baluns and the insulating assembly; the two groups of half-wave oscillator arms are mutually orthogonal; the radiation surfaces of the two groups of half-wave oscillator arms are positioned in the same plane; the radiation main body formed by the two groups of half-wave oscillator arms is square; a cross gap is formed between the two groups of half-wave oscillator arms; the two groups of half-wave oscillator arms are positioned at two ends of a transverse shaft or two adjacent positions of two ends of a longitudinal shaft of the cross gap and are provided with triangular cut angles; the insulating assembly is embedded into an inner hole of the balun and used for fixing the feed sheet into the inner hole of the balun; the two feed pieces are mutually insulated and orthogonal; each group of half-wave oscillator arms form a polarized radiation subunit by coupling a feed sheet. The embodiment of the utility model provides a coupling radiation unit and antenna can provide better voltage standing wave ratio, third-order intermodulation and cross polarization ratio when the frequency is higher, improve the performance.
Description
Technical Field
The utility model relates to the field of communication technology, more specifically relates to a coupling radiating element and antenna.
Background
The radiation unit is used for converting a high-frequency current signal into an electromagnetic signal or converting the electromagnetic signal into the current signal. The trend of the base station antenna is miniaturization, which brings about frequency increase and complexity of electromagnetic environment.
Most of existing base station antenna radiation units are fed by 7-shaped feed pieces, the bottom ends of the feed pieces are connected with coaxial cables, the upper ends of the feed pieces are welded with oscillator arms, and when the base station antenna radiation units are produced in batches, a large amount of manpower and time resources can be wasted due to complex operations, and the efficiency is low. When the frequency is relatively high, the solder joint at the upper end of the feed plate may deteriorate the standing wave and affect the third-order intermodulation, thereby affecting the performance of the radiating unit and the base station antenna. Therefore, the conventional radiating element has a disadvantage of poor performance when the frequency is high.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a coupling radiating element and antenna for solve or solve current radiating element partially at least and the not good defect of performance when the frequency is higher.
In a first aspect, an embodiment of the present invention provides a coupling radiation unit, including: the feed device comprises two groups of half-wave oscillator arms, baluns arranged corresponding to the two groups of half-wave oscillator arms, two feed sheets penetrating through the baluns and an insulating assembly;
the two groups of half-wave oscillator arms are mutually orthogonal;
the radiation surfaces of the two groups of half-wave oscillator arms are positioned in the same plane; the radiation main body formed by the two groups of half-wave oscillator arms is square;
a cross gap is formed between the two groups of half-wave oscillator arms; the two groups of half-wave oscillator arms are positioned at two ends of a transverse shaft or two adjacent positions of two ends of a longitudinal shaft of the cross gap and are provided with triangular cut angles;
the insulation component is embedded into an inner hole of the balun and used for fixing the two feeding sheets in the inner hole of the balun;
the two feed pieces are mutually insulated and orthogonal; each group of half-wave oscillator arms forms a polarized radiation subunit by coupling one feed sheet.
Preferably, each set of half-wave dipole arms comprises two half-wave dipole arms located on a diagonal of the radiation body; the two half-wave oscillator arms are centrosymmetric about the center of the radiation main body;
the overall shape of the half-wave oscillator arm is a square frame; a connecting body is arranged between the vertex of the half-wave oscillator arm closest to the center of the radiation main body and the vertex of the half-wave oscillator arm farthest from the center of the radiation main body;
the width of the connecting body is larger than that of the frame of the half-wave oscillator arm.
Preferably, a plurality of circular through holes are arranged on the connecting body.
Preferably, the balun comprises two sets of hollow balun support posts; each group of hollow balun support columns comprises two hollow balun support columns, and the two hollow balun support columns are in off-diagonal relation; the four hollow balun support columns are vertically and parallelly distributed;
each hollow balun support column corresponds to one half-wave oscillator arm and is connected with the corresponding half-wave oscillator arm;
a gap exists between two adjacent hollow balun support columns; the bottoms of the four hollow balun support columns are connected with each other;
and one group of hollow balun support columns in the two groups of hollow balun support columns respectively extend downwards to form balun antenna.
Preferably, the feeding sheet is in an η -shaped structure;
the two vertical sections of the feed sheet are respectively inserted into the two hollow balun support columns in a diagonal relationship; the two vertical sections comprise a first vertical section and a second vertical section, and the length of the first vertical section is greater than that of the second vertical section; the first vertical section is inserted into the hollow balun support post that extends downward to form the balun antenna.
Preferably, the coupling radiation unit further comprises a dielectric base;
the medium base comprises two through holes; the shape of the through hole is matched with that of the balun antenna;
the medium base comprises a plurality of upward medium antennae used for being connected with the balun.
Preferably, the coupling radiation unit further includes: a dielectric support and parasitic radiating patch;
the lower end of the medium support is fixed on the front surface of the radiation main body;
the parasitic radiation piece is fixed at the upper end of the medium support.
Preferably, the lower end of the media support comprises two sets of support posts; the two groups of support columns are in an orthogonal relation;
the bottom of each supporting column comprises a medium column with the same width as the cross gap;
the bottom of each support column in the first group of the two groups of support columns also comprises lower buckles symmetrically arranged on two sides of the medium column; the width between the inner side of the lower buckle and the medium column is equal to the width of the cross gap.
Preferably, the tops of the four support columns are connected into a whole;
the top of each support column in the first group of the two groups of support columns comprises an upper buckle extending upwards;
a second of the two sets of support posts comprises a top of each support post comprising an upwardly extending dielectric antenna;
and through holes corresponding to the upper buckles and the dielectric antennae are formed in the parasitic radiation sheet.
In a second aspect, an embodiment of the present invention provides an antenna, including a plurality of coupling radiation units provided in any one of various possible implementations of the first aspect.
The embodiment of the utility model provides a coupling radiation unit and antenna constitutes a polarization radiation subunit through the feed piece that each group half-wave oscillator arm corresponds through the coupling for radiation face current direction satisfies the radiation condition, can promote voltage standing wave ratio and third order intermodulation, through setting up the triangle-shaped corner cut of two sets of common opposite sides, can improve radiation unit's 60 cross polarization ratios; therefore, when the frequency is higher, better voltage standing wave ratio, third-order intermodulation and cross polarization ratio can be provided in a complex electromagnetic environment, and the performance of the radiation unit is improved. And, because simple structure to reduced the loaded down with trivial details operation of ordinary feed welding, more be favorable to batch production.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an exploded schematic view of a coupling radiation unit according to an embodiment of the present invention;
fig. 2 is a schematic structural perspective view of a coupling radiation unit according to an embodiment of the present invention;
fig. 3 is a top view of a coupling radiation unit provided according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a feed tab and an insulating assembly in a coupling radiation unit according to an embodiment of the present invention;
fig. 5 is an exploded schematic view of a coupling radiation unit according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a dielectric support and a parasitic radiation plate in a coupling radiation unit according to an embodiment of the present invention;
fig. 7 is a schematic diagram illustrating a voltage standing wave ratio test result of a coupling radiation unit according to an embodiment of the present invention;
fig. 8 is a schematic diagram illustrating a polarization isolation test result of a coupling radiation unit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.
In order to overcome prior art's above-mentioned problem, the embodiment of the utility model provides a coupling radiation unit, its design is, two half-wave oscillator arms that the mode that adopts the coupling feed piece made the diagonal relation constitute polarization, under the sufficient prerequisite of index such as assurance gain, the problem that third-order intermodulation and voltage standing wave ratio are not good has been solved, and through two sets of triangle-shaped corner cuts that set up in the adjacent department of half-wave oscillator arm, effectively improve radiation unit's 60 cross polarization ratio, thereby the performance of radiation unit when the frequency is higher has been improved.
Fig. 1 is an exploded schematic view of a coupling radiation unit according to an embodiment of the present invention; fig. 2 is a schematic structural perspective view of a coupling radiation unit according to an embodiment of the present invention; fig. 3 is a top view of a coupling radiation unit according to an embodiment of the present invention. As shown in fig. 1 to 3, the coupling radiation unit includes: the two sets of half-wave oscillator arms 101, the balun 102 arranged corresponding to the two sets of half-wave oscillator arms, the two feeding sheets 201 penetrating through the balun, and the insulating assembly 202.
The two sets of half-wave oscillator arms 101 are orthogonal to each other.
It should be noted that the operating bandwidth of the coupling radiation unit may be an ultra-wideband, specifically 1710 MHz-2690 MHz.
Specifically, the two sets of half-wave oscillator arms 101 respectively form ± 45 ° polarization, and apparently, ± 45 ° forms orthogonality.
The two sets of half-wave dipole arms 101 form a half-wave dipole.
The radiation surfaces of the two groups of half-wave oscillator arms 101 are positioned in the same plane; the radiating body formed by the two sets of half-wave oscillator arms 101 is square.
A cross gap 107 is formed between the two groups of half-wave oscillator arms 101; the two groups of half-wave oscillator arms 101 are positioned at two ends of a transverse shaft or two adjacent positions of two ends of a longitudinal shaft of the cross gap 107 and are provided with triangular cut angles 108.
In particular, the shape of the radiating body is square. The radiating body is made up of two sets of half-wave dipole arms 101.
Two groups of half-wave oscillator arms 101 are not connected, the adjacent sides of the two groups of half-wave oscillator arms are parallel, and a gap exists between the adjacent sides, namely a cross gap 107 is formed between the two adjacent half-wave oscillator arms 101, so that the two half-wave oscillator arms are insulated.
At each end of the transverse axis of the cross slot 107, a triangular chamfer 108 is provided at the corner of the half-wave oscillator arm 101 on both sides of the end. Therefore, each half-wave oscillator arm 101 has a chamfered corner, which can form two sets of triangular cut angles 108 on the same side, and can significantly improve the ± 60 ° cross polarization ratio.
The side length of the triangular chamfer 108 is smaller than the side length of the half-wave oscillator arm 101.
It should be noted that the two sets of triangular cut angles 108 on the same side may also be disposed at the corners of the half-wave oscillator arms 101 on both sides of each end of the longitudinal axis of the cross slot 107, and the ± 60 ° cross polarization ratio may also be significantly improved.
The radiation surfaces of the two groups of half-wave oscillator arms 101 are front surfaces, and the bottom surfaces of the two groups of half-wave oscillator arms 101 are fixedly connected with the balun 102. Specifically, the two sets of half-wave oscillator arms 101 and the balun 102 may be integrally die-cast.
The two sets of half-wave oscillator arms 101 and the balun 102 are both conductors, and various metal materials, such as aluminum alloy, can be used.
An insulating member 202 is inserted into the inner hole of the balun 102 for fixing the two feeding pieces 201 in the inner hole of the balun 102.
Note that the balun 102 is provided with an inner hole.
The two feed tabs 201 pass through the insulating member 202, and are positioned and fixed by the insulating member 202.
After the two feeding sheets 201 pass through the insulation assembly 202, the insulation assembly 202 is embedded into the inner hole of the balun 102, so that the two feeding sheets 201 can be fixed in the middle of the inner hole of the balun 102 through the insulation assembly 202.
The insulator assembly 202 may include several securing snaps for securing the insulator assembly 202 within the internal bore of the balun 102.
The two feeding sheets 201 are mutually insulated and orthogonal; each group of half-wave oscillator arms form a polarized radiation subunit by coupling a feed sheet.
Specifically, the two feed tabs 201 are orthogonally arranged, are not directly connected to each other, are not connected by any wire or conductor, and are thus insulated from each other.
The feeding plate 201 may be made of a conductive material such as metal, for example, the feeding plate 201 is a metal sheet.
The two feed pieces 201 correspond to a set of half-wave oscillator arms 101, respectively. Each group of half-wave oscillator arms 101 with the same polarization forms polarization by coupling the corresponding feed plate 201, and each group of half-wave oscillator arms 101 and the corresponding feed plate 201 jointly form a polarized radiation subunit, so that the four half-wave oscillator arms 101 and the two feed plates 201 can form two polarized radiation subunits to form a dual-polarized radiator.
The embodiment of the utility model provides a constitute a polarization radiating subunit through the feed piece that each group half-wave oscillator arm corresponds through the coupling for radiation face current direction satisfies the radiation condition, can promote voltage standing wave ratio and third-order intermodulation, through setting up the triangle-shaped corner cut of two sets of common opposite sides, can improve radiating unit's 60 cross polarization ratio; therefore, when the frequency is higher, better voltage standing wave ratio, third-order intermodulation and cross polarization ratio can be provided in a complex electromagnetic environment, and the performance of the radiation unit is improved. And, because simple structure to reduced the loaded down with trivial details operation of ordinary feed welding, more be favorable to batch production, still improve the efficiency when using in batches.
Based on the content of the above embodiments, each set of half-wave oscillator arms 101 includes two half-wave oscillator arms 101 located on a diagonal line of the radiation body; the two half-wave oscillator arms 101 are centrosymmetric about the center of the radiating body.
Specifically, each group of half-wave oscillator arms 101 includes two half-wave oscillator arms 101, and the two half-wave oscillator arms 101 are located on the same diagonal line of the radiation body, that is, the two half-wave oscillator arms 101 are located in a diagonal relationship. Thus, the two sets of half-wave oscillator arms 101 constitute a dual-polarized radiator.
The two half-wave oscillator arms 101 located on the same side of the square are adjacent half-wave oscillator arms, and thus the two half-wave oscillator arms 101 in the same group are not adjacent. For two adjacent half-wave oscillator arms 101, the central line of the square side where the two half-wave oscillator arms are located is taken as a symmetry axis, and the two half-wave oscillator arms are in an axisymmetric relationship. The two half-wave oscillator arms 101 in the same group are in central symmetry, and the symmetry center is the center of the square.
Two adjacent half-wave oscillator arms 101 are not connected, the adjacent sides of the two half-wave oscillator arms are parallel, and a gap exists between the adjacent sides, namely, a gap exists between the two adjacent half-wave oscillator arms 101, so that the two half-wave oscillator arms are insulated.
The gap that exists between every two of the four half-wave dipole arms 101 forms a cross slot 107 in the radiating body. The four half-wave oscillator arms 101 are axisymmetric with respect to the horizontal axis of the cross slot 107 and also axisymmetric with respect to the vertical axis of the cross slot 107.
The overall shape of the half-wave oscillator arm 101 is a square frame.
Specifically, the half-wave oscillator arm 101 is square as a whole. The half-wave oscillator arm 101 is a square hollow structure and includes a frame that is square as a whole.
The working bandwidth of the radiation unit depends on the width of the half-wave oscillator arm, and the working frequency band of the coupling radiation unit provided by the novel experimental embodiment can be 1710 MHz-2690 MHz by selecting the width of a proper frame.
As shown in fig. 1 to 3, a connecting body 105 is arranged between the vertex of the half-wave oscillator arm closest to the center of the radiation body and the vertex of the half-wave oscillator arm farthest from the center of the radiation body; the width of the connecting body 105 is larger than the width of the frame of the half-wave oscillator arm 101.
Specifically, of the four vertices of the half-wave oscillator arm 101, a diagonal structure, that is, a connection body 105 connecting the two vertices is provided between the two vertices (i.e., the vertices closest and farthest to the center of the radiating body) on the diagonal of the radiating body.
The width of the connecting body 105 is larger than the width of the frame of the half-wave oscillator arm 101.
The connecting body 105 is a conductor, and various metal materials such as aluminum alloy and the like can be used.
Through the arrangement, the radiation main body forms a cross grid shape, so that the structure of the coupling radiation unit has stronger directivity, and the +/-60-degree cross polarization ratio of the radiation unit is effectively improved.
The embodiment of the utility model provides a through set up the connector on every half wave oscillator arm, have stronger directive property, can improve 60 cross polarization ratio, improve the performance of radiating element when the frequency is higher.
Based on the content of the above embodiments, as shown in fig. 1 to 3, the connecting body 105 is provided with a plurality of circular through holes 106.
Particularly, the circular through hole 106 can adjust the capacitance of the radiating unit and improve the voltage standing wave ratio.
Moreover, the radius of the circular through hole 106 can be set according to actual conditions, and is used for loading an existing universal adjusting piece, and the universal adjusting piece is fixed on the half-wave oscillator arm 101 through the circular through hole 106. The universal adjusting piece can be selectively used in the subsequent optimization of the index of the coupling radiation unit so as to improve the performance of the coupling radiation unit.
Several, one or more.
The embodiment of the utility model can improve the capacitance of the radiation unit and improve the voltage standing wave ratio by arranging the circular through hole on the connecting body 105; the universal adjusting member can also be loaded on the radiating element to further optimize the performance of the coupled radiating element through the universal adjusting member.
Based on the content of the above embodiments, the balun 102 includes two sets of hollow balun support columns; each group of hollow balun support columns comprises two hollow balun support columns, and the two hollow balun support columns are in off-diagonal relation; the four hollow balun support columns are vertically and parallelly distributed; each hollow balun support column corresponds to one half-wave oscillator arm respectively and is connected with the corresponding half-wave oscillator arm.
Specifically, the balun 102 includes four hollow balun support posts.
Each hollow balun support column corresponds to one half-wave oscillator arm 101, and therefore, the four hollow balun support columns also form a square structure. The four hollow balun support columns are divided into two groups, each group comprises two hollow balun support columns, and the two hollow balun support columns located on the diagonal of the square belong to different groups.
Each half-wave oscillator arm 101 corresponds to and is fixedly connected with one hollow balun support column.
A certain draft angle exists between the bottom of each hollow balun support column and the radiation surface, so that the die-casting forming is facilitated.
A gap exists between two adjacent hollow balun support columns; the bottoms of the four hollow balun support columns are connected with each other.
Specifically, four hollow balun support columns are separated from each other except for the bottom, and a gap exists between two adjacent hollow balun support columns. Thus, the cross slit 107 extends from the radiating body down to the bottom of the balun. The depth of the cross slit is less than one quarter of the center wavelength. The central wavelength is the wavelength of the central frequency point of the working of the radiation unit.
The bottoms of the four hollow balun support columns are connected together.
One group of hollow balun support columns in the two groups of hollow balun support columns respectively extend downwards to form balun antenna 104.
Specifically, for one of the two groups of hollow balun support columns, the two hollow balun support columns included in the group respectively extend downward from the portions where the bottoms of the four hollow balun support columns are connected with each other, so as to form the balun antenna 104.
A balun antenna 104 for fixing the radiating element on the reflector plate with appropriate holes. The balun antenna 104 is welded to the coaxial line outer conductor.
The embodiment of the utility model provides a can fix radiating element on the reflecting plate through balun antenna, the welding is led outward of balun antenna and coaxial line, can realize the coupling feed to when the frequency is higher, improve the performance of coupling radiating element.
Fig. 4 is a schematic structural diagram of a feed tab and an insulating assembly in a coupled radiation unit according to an embodiment of the present invention, based on the content of the above embodiments, as shown in fig. 4, the feed tab 201 has an "η" shape, two vertical sections of the feed tab 201 are respectively inserted into two hollow balun support columns in a diagonal relationship, the two vertical sections include a first vertical section and a second vertical section, the length of the first vertical section is greater than that of the second vertical section, and the first vertical section is inserted into a hollow balun support column extending downward to form a balun antenna.
Specifically, the insulating member 202 serves to fix the feed tab to the central portion of the radiating body.
It should be noted that the structure of the insulating assembly 202 corresponds to the structure of the balun 102.
The balun 102 includes four hollow balun support columns, and correspondingly, the insulating assembly 202 also includes four hollow cylinders, centers of the four hollow cylinders form a square, and each hollow cylinder is inserted into a corresponding hollow balun support column.
The outer diameter of the hollow cylinder is matched with the inner diameter of the hollow balun support column, and specifically can be equal to or slightly smaller than the inner diameter of the hollow balun support column. Thus, each hollow cylinder can be inserted into a corresponding hollow balun support column.
The height of the hollow cylinder may be less than or equal to the height of the hollow balun support posts.
The inner hole of the balun 102 mainly comprises hollow parts in a hollow balun support column, and can also comprise a support structure between the hollow parts. Accordingly, the insulation assembly 202 further includes a connection structure between the four hollow cylinders.
The insulation assembly 202 is supported by the support structure in the inner bore of the balun 102 through the connection structure between the four hollow cylinders, and the connection structure and the support structure can be clamped to fix the insulation assembly 202.
The insulation assembly 202 may be an insulation member such as an engineering plastic member, a rubber member, and the like, and specifically may be an engineering plastic fastener.
The feed tab 201 is shaped like "η" and includes two vertical sections, the first vertical section being the relatively longer of the two vertical sections, and the second vertical section being the relatively shorter of the two vertical sections.
In addition, in the two groups of hollow balun support columns, the hollow balun support columns which extend downwards to form the balun antenna are the first group of hollow balun support columns, and the hollow balun support columns which do not extend downwards to form the balun antenna are the second group of hollow balun support columns.
A first vertical section of the feed tab 201 passes through the insulation assembly 202 and is inserted and secured in one of the first set of hollow balun support posts.
The bottom end of the first vertical section of the feeding tab 201 may be soldered to the core of the coaxial line at the reflector plate back surface balun antenna 104.
The second vertical section of the feed tab 201 passes through the insulation assembly 202 and is inserted into one of the second set of hollow balun support posts, where it is coupled to the inner hole wall of the balun 102.
One hollow balun support column in the first group of hollow balun support columns inserted into the first vertical section of the feed tab 201 and one hollow balun support column in the second group of hollow balun support columns inserted into the second vertical section are in a diagonal relationship.
The two feeding pieces 201 form an included angle of 90 °, i.e. perpendicular to each other and orthogonal to each other.
The two feeding pieces 201 have different heights in the horizontal section, and are distributed in different horizontal planes one above the other (one higher and one lower), so that the two feeding pieces 201 are not directly connected with each other, and are not connected with each other through a wire or a conductor.
Any of the feed tabs 201 are not directly connected to the balun 102 and each half-wave oscillator arm 101.
The bottom section of first vertical section 41 is equipped with cylindrical mounting 203, and the diameter of cylindrical mounting 203 and hollow cylinder's internal diameter phase-match, but cylindrical mounting 203 is higher than the bottom of first vertical section 41.
The diameter of the cylindrical fixture 203 matches the inner diameter of the hollow balun support posts. The cylindrical fixing member 203 may be made of a material with a certain elasticity, such as plastic, rubber, etc., and accordingly, the diameter of the cylindrical fixing member 203 may be equal to or slightly larger than the inner diameter of the hollow balun support column, so that the feeding strip may be fixed in the inner hole of the balun 102 by the cylindrical fixing member 203.
It will be appreciated that the hollow cylinder of the insulation assembly 202 through which the first vertical section passes is provided with an opening that matches the thickness of the first vertical section.
The cylindrical fixing member 203 may be an insulating member such as an engineering plastic member.
The thickness of the feeding sheet 201 can be selected according to practical conditions to achieve impedance matching.
The embodiment of the utility model provides a through the sinle silk line welding of "η" shape feed piece one end and coaxial line, the other end can realize the coupling feed with the interior pore wall coupling of balun, guarantees when the frequency is higher under the sufficient prerequisite of index such as gain, can optimize third-order intermodulation and voltage standing wave ratio, improves the performance of coupling radiating element.
Based on the content of the above embodiments, as shown in fig. 1 and fig. 2, the coupling radiation unit further includes a dielectric base 103. The dielectric mount 103 includes two through holes; the shape of the through hole is matched with that of the balun antenna 104; the dielectric mount 103 includes several upward dielectric antennae for connecting the balun 102.
In particular, the media base 103 may be an insulation such as an engineering clinker, for example an engineering plastic shim.
The two balun antennae 104 can pass through the through holes on the dielectric base 103 to fix the whole radiation unit on the reflecting plate with proper hole positions, and the bottom plane of the balun 102 is isolated from the reflecting plate by the dielectric base 103.
The shape of the dielectric mount 103 matches the shape of the balun 102.
The plurality of dielectric antennae extending upwards from the dielectric base 103 can form a stable structural connection with the balun 102, so as to realize stable and convenient fixing of the coupling radiation unit.
The embodiment of the utility model provides a through with balun assorted medium base for coupling radiating element's fixed more stable, convenient.
Fig. 5 is an exploded schematic view of a coupling radiation unit according to an embodiment of the present invention; fig. 6 is a schematic structural diagram of a dielectric support and a parasitic radiation plate in a coupling radiation unit according to an embodiment of the present invention. Based on the content of the above embodiments, as shown in fig. 5 and fig. 6, the coupling radiation unit further includes a dielectric support 301 and a parasitic radiation patch 302; the lower end of the media support 301 is fixed to the front face of the radiating body; the parasitic radiating patch 302 is fixed to the upper end of the dielectric support 301.
Specifically, the parasitic radiation piece 302 is fixed on the radiation body through the dielectric support 301 to adjust the voltage standing wave ratio and the port isolation, improve the impedance matching of the radiation unit, and adjust the 3dB beam width.
The media support 301 may be secured at its lower end to the front face of the radiating body by snapping into a cross slot.
The height of the dielectric support is less than one quarter of the center wavelength. The central wavelength is the wavelength of the central frequency point of the working of the radiation unit. Therefore, the distance of the parasitic radiation piece 302 from the radiation planes of the two sets of half-wave oscillator arms 101 is also less than a quarter of the center wavelength.
The parasitic radiation piece 302 may be fixed to the upper end of the dielectric support 301 by means of a detachable or fixed connection.
The embodiment of the utility model provides a through setting up parasitic radiation piece, can adjust voltage standing wave ratio and port isolation, improve radiating element impedance match, debug 3dB beam width, when the frequency is higher, further improve radiating element's performance.
Based on the foregoing embodiments, as shown in fig. 5 and 6, the lower end of the media support 301 includes two sets of support posts; the two groups of support columns are in an orthogonal relation; the bottom of each support column comprises a medium column 303 with the same width as the cross gap; the bottom of each support column in the first group of the two groups of support columns also comprises lower buckles 304 which are symmetrically arranged at two sides of the medium column 303; the width between the inside of lower catch 304 and media post 303 is equal to the width of cross slot 107.
Specifically, the lower end of the media support 301 includes two sets of support posts. Each set of support columns includes two support columns. The four support columns form a square, and the two support columns in the same group are in a diagonal relationship, so that the connecting lines of the two support columns in the two groups are mutually vertical, and the two groups of support columns are in an orthogonal relationship.
The bottom of each support column in the first group of support columns comprises a medium column 303 positioned in the center and lower buckles 304 on two sides of the medium column 303 to form a three-leg structure.
The bottom of each support post in the second set of support posts includes a centrally located media post 303 but does not include a lower catch 304.
The width of the media column 303 is the same as the width of the cross slot so that it can be inserted into the cross slot; the width between the inner side of the lower buckle 304 and the dielectric column 303 is equal to the width of the cross gap 107, so that the three-leg structure can surround the frames of the half-wave oscillator arms 101 on the two sides of the cross gap, and the dielectric support 301 is firmly positioned and fixed on the radiation body.
The embodiment of the utility model provides a through four support columns, can support the medium more firmly be fixed in the radiation main part on.
Based on the content of the above embodiments, as shown in fig. 5 and fig. 6, the tops of the four supporting columns are connected into a whole; the top of each support column included in the first of the two sets of support columns includes an upwardly extending upper clasp 306; the second of the two sets of support posts includes a top portion of each support post that includes an upwardly extending dielectric antenna 305.
Specifically, the upper ends of the medium supports 301 are integrally connected.
The upper end of the medium support is provided with two positioning medium antennae 305 and two upper buckles 306 which extend upwards and are used for positioning and fixing the parasitic radiation piece 302.
Because the bottom of each support column in the first group of support columns is of a three-leg structure, the fixing is firmer, and the top of each support column in the first group of support columns is provided with an upper buckle 306 extending upwards, so that the parasitic radiation piece 302 is fixed; on top of each support column in the second set of support columns, an upwardly extending dielectric antenna 305 is provided for positioning the parasitic radiating patch 302.
And the parasitic radiation piece is provided with through holes respectively corresponding to the upper buckles and the medium antennae.
Correspondingly, the parasitic radiation piece is provided with a through hole which is correspondingly arranged with the two positioning medium antennae 305 and the two upper buckles 306, and the parasitic radiation piece is directly buckled on the medium antennae 305 and the fixed buckles 306 on the medium support, so that a firm mechanical structure can be realized.
The embodiment of the utility model provides a through the medium feeler on the medium supports, go up the buckle that corresponds the setting on buckle and the parasitic radiation piece, can be more simple and convenient, firmly be fixed in the medium with the parasitic radiation piece and support.
Fig. 7 is a schematic diagram illustrating a voltage standing wave ratio test result of a coupling radiation unit according to an embodiment of the present invention; fig. 8 is a schematic diagram illustrating a polarization isolation test result of a coupling radiation unit according to an embodiment of the present invention.
As can be seen from fig. 7 and 8, in the working bandwidth of 1710 MHz-2690 MHz, the voltage standing wave ratio of the coupling radiation unit provided by the embodiments of the foregoing utility model is less than 1.4, and the port isolation is less than-29 dB, so that the broadband design requirement is met, and the performance is greatly improved.
Based on the content of the foregoing embodiments, an antenna includes a plurality of coupling radiation units provided in any one of the above embodiments of coupling radiation units.
Specifically, each coupling radiation unit can be fixed on the reflecting plate through a balun, and the connection between the core of the coaxial line and the feed sheet and the connection between the outer conductor and the balun form the antenna.
The embodiment of the utility model provides a through adopting the coupling feed, can provide better voltage standing wave ratio, third-order intermodulation and cross polarization ratio in the electromagnetic environment of complicacy when the frequency is higher, improve the performance of antenna.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A coupled radiating element, comprising: the feed device comprises two groups of half-wave oscillator arms, baluns arranged corresponding to the two groups of half-wave oscillator arms, two feed sheets penetrating through the baluns and an insulating assembly;
the two groups of half-wave oscillator arms are mutually orthogonal;
the radiation surfaces of the two groups of half-wave oscillator arms are positioned in the same plane; the radiation main body formed by the two groups of half-wave oscillator arms is square;
a cross gap is formed between the two groups of half-wave oscillator arms; the two groups of half-wave oscillator arms are positioned at two ends of a transverse shaft or two adjacent positions of two ends of a longitudinal shaft of the cross gap and are provided with triangular cut angles;
the insulation component is embedded into an inner hole of the balun and used for fixing the two feeding sheets in the inner hole of the balun;
the two feed pieces are mutually insulated and orthogonal; each group of half-wave oscillator arms forms a polarized radiation subunit by coupling one feed sheet.
2. The coupled radiating element of claim 1, wherein each set of half-wave dipole arms comprises two half-wave dipole arms located on a diagonal of the radiating body; the two half-wave oscillator arms are centrosymmetric about the center of the radiation main body;
the overall shape of the half-wave oscillator arm is a square frame; a connecting body is arranged between the vertex of the half-wave oscillator arm closest to the center of the radiation main body and the vertex of the half-wave oscillator arm farthest from the center of the radiation main body;
the width of the connecting body is larger than that of the frame of the half-wave oscillator arm.
3. The coupled radiating element of claim 2, wherein the connecting body is provided with a plurality of circular through holes.
4. The coupled radiating element of claim 2, wherein the balun includes two sets of hollow balun support posts; each group of hollow balun support columns comprises two hollow balun support columns, and the two hollow balun support columns are in off-diagonal relation; the four hollow balun support columns are vertically and parallelly distributed;
each hollow balun support column corresponds to one half-wave oscillator arm and is connected with the corresponding half-wave oscillator arm;
a gap exists between two adjacent hollow balun support columns; the bottoms of the four hollow balun support columns are connected with each other;
and one group of hollow balun support columns in the two groups of hollow balun support columns respectively extend downwards to form balun antenna.
5. The coupled radiating element of claim 4, wherein the feeding sheet is an "η" shaped structure;
the two vertical sections of the feed sheet are respectively inserted into the two hollow balun support columns in a diagonal relationship; the two vertical sections comprise a first vertical section and a second vertical section, and the length of the first vertical section is greater than that of the second vertical section; the first vertical section is inserted into the hollow balun support post that extends downward to form the balun antenna.
6. The coupled radiating element of claim 4, further comprising a dielectric mount;
the medium base comprises two through holes; the shape of the through hole is matched with that of the balun antenna;
the medium base comprises a plurality of upward medium antennae used for being connected with the balun.
7. The coupled radiating element of any one of claims 1 to 6, further comprising: a dielectric support and parasitic radiating patch;
the lower end of the medium support is fixed on the front surface of the radiation main body;
the parasitic radiation piece is fixed at the upper end of the medium support.
8. The coupled radiating element of claim 7, wherein the lower end of the dielectric support comprises two sets of support posts; the two groups of support columns are in an orthogonal relation;
the bottom of each supporting column comprises a medium column with the same width as the cross gap;
the bottom of each support column in the first group of the two groups of support columns also comprises lower buckles symmetrically arranged on two sides of the medium column; the width between the inner side of the lower buckle and the medium column is equal to the width of the cross gap.
9. The coupled radiating element of claim 8, wherein the tops of four supporting pillars are connected into a whole;
the top of each support column in the first group of the two groups of support columns comprises an upper buckle extending upwards;
a second of the two sets of support posts comprises a top of each support post comprising an upwardly extending dielectric antenna;
and through holes corresponding to the upper buckles and the dielectric antennae are formed in the parasitic radiation sheet.
10. An antenna comprising a plurality of coupled radiating elements according to any of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921400183.0U CN210142716U (en) | 2019-08-27 | 2019-08-27 | Coupling radiation unit and antenna |
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| CN201921400183.0U CN210142716U (en) | 2019-08-27 | 2019-08-27 | Coupling radiation unit and antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117239400A (en) * | 2023-08-28 | 2023-12-15 | 佛山市迪安通讯设备有限公司 | Ultra-wideband PCB radiating unit and ultra-wideband antenna |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117239400A (en) * | 2023-08-28 | 2023-12-15 | 佛山市迪安通讯设备有限公司 | Ultra-wideband PCB radiating unit and ultra-wideband antenna |
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