CN111326855A - FSS structure-based ultra-wide angle scanning octagonal patch antenna - Google Patents
FSS structure-based ultra-wide angle scanning octagonal patch antenna Download PDFInfo
- Publication number
- CN111326855A CN111326855A CN202010098789.4A CN202010098789A CN111326855A CN 111326855 A CN111326855 A CN 111326855A CN 202010098789 A CN202010098789 A CN 202010098789A CN 111326855 A CN111326855 A CN 111326855A
- Authority
- CN
- China
- Prior art keywords
- patch
- hole
- printed board
- octagonal
- fss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
Landscapes
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The application discloses super wide angle scanning octagonal patch antenna based on FSS structure, a plurality of paster units of its periodic arrangement, paster unit include FSS constitutional unit and the octagonal patch unit that sets gradually from top to bottom, and octagonal patch unit includes: a metal printed board is arranged at the right edge of the two layers of printed board antenna layers and the lower layer of printed board antenna layer of the metal bottom plate, and two octagonal patches are arranged on the upper layer of printed board antenna layer; one end of the grounding metallized row hole is positioned in the middle of the metal printed board, and the other end of the grounding metallized row hole is positioned on the metal bottom plate so as to change the mutual coupling phase between the adjacent patch units; the feed metallized through hole is positioned in the middle of the left side of the metal printed board and feeds power to the connected octagonal patch; the short circuit metallization through hole is positioned on the left side of the feed metallization through hole and is used for short-circuiting the connected octagonal patch and the metal bottom plate. Through the technical scheme in the application, the patch antenna with the ultra-wide angle scanning characteristic is realized, the broadband wide angle scanning characteristic is good, and the section is low.
Description
Technical Field
The application relates to the technical field of antennas, in particular to an ultra-wide angle scanning octagonal patch antenna based on an FSS structure.
Background
With the development of electronic technology, various radio frequency systems are more and more, but in general, each radio frequency system operates independently, so that the number of antennas on a platform in the radio frequency system is more and more, the reflection sectional area of a radar on the platform is greatly increased by various exposed antennas, and the stealth performance of the platform is reduced. And the sensors are in mutual fighting and lack of high integration, so that the electromagnetic interference among equipment is increased, and the systems are difficult to exert respective performances to the maximum extent. Therefore, higher requirements are put on a radar detection system, and the problem of the ultra-wide bandwidth scanning angle becomes a bottleneck of the development of the modern radar front.
The basic function of an antenna array system is to transmit and receive electromagnetic waves, and is also referred to as a spatial filter of the amplitude, phase, frequency and polarization characteristics of the electromagnetic waves. In order to meet the requirements of low profile and lightness and thinness of radar, the research on an antenna radiation unit with excellent performance of broadband, wide angle and scanning is increasingly emphasized, and the performance of the antenna radiation unit can directly influence the information processing capability of the radar, particularly a phased array antenna with a wide scanning angle and an ultra wide band.
For the electric scanning phased array radar formed by the phased array antenna, because the orientation of the array surface and the position of the carrier platform are fixed, the optimal scanning range is only within +/-60 degrees of the normal direction of the unit, and therefore the space search area of the planar phased array antenna is limited. Therefore, the wave beam coverage area of the phased array antenna needs to be enlarged, and great promotion effects are played in the aspects of expanding a exploration airspace of the phased array antenna, reducing a detection blind area, finding or avoiding enemies in time and the like.
In the prior art, common phased array antennas mainly include printed dipole antennas, patch antennas, slotted gradient antennas, and the like. The antennas have certain broadband and wide-angle scanning capability and can meet the scanning index requirement of +/-60 degrees, but with the further expansion of the scanning angle theta, the problem of large return loss caused by impedance mismatch often occurs because the E-plane scanning impedance transformation is in direct proportion to cos theta and the H-plane scanning impedance transformation is in direct proportion to 1/cos theta.
In the design, corresponding measures need to be taken, for example, an inductive or capacitive device is loaded to adjust the matching of the antenna, so as to realize the matching in the ultra-wide angle scanning, but the measures can increase the loss and are very complex to realize. In summary, the existing phased array antenna has a major technical difficulty: the loss is increased due to poor matching between the antenna and the free space during large-angle scanning, and the increasing system requirements are difficult to meet.
Disclosure of Invention
The purpose of this application lies in: the patch antenna with the ultra-wide angle scanning characteristic is good in broadband wide angle scanning characteristic, simple in feed structure and low in section, and can be well matched with a free space in large-angle scanning.
The technical scheme of the application is as follows: the utility model provides an ultra wide angle scanning octagonal patch antenna based on FSS structure, a plurality of paster units of having arranged periodically on the paster antenna, the paster unit is including FSS constitutional unit and the octagonal patch unit that sets gradually from top to bottom, and octagonal patch unit includes: the antenna comprises a printed board antenna layer, a grounding metalized row hole, a feed metalized through hole, a short circuit metalized through hole and a metal bottom board; the two layers of printed board antenna layers and the metal bottom plate are sequentially arranged from top to bottom, a metal printed board is arranged at the right edge of the lower layer of printed board antenna layer, and two octagonal patches are arranged on the upper layer of printed board antenna layer and are positioned on the left side of the metal printed board; one end of the grounding metallization row hole is positioned in the middle of the metal printed board, the other end of the grounding metallization row hole is positioned on the metal bottom board, and the grounding metallization row hole is used for changing the mutual coupling phase between the adjacent patch units; the feed metalized through hole is positioned in the middle of the left side of the metal printed board, is connected to the first octagonal patch and the metal bottom board and is used for feeding electricity to the first octagonal patch; the short circuit metallization through hole is located the left side of feed metallization through hole, and short circuit metallization through hole connects in second octagon paster and metal bottom plate, and short circuit metallization through hole is used for short circuit second octagon paster and metal bottom plate.
In any one of the above technical solutions, further, a diameter of the feed metalized through hole is equal to a diameter of the short metalized through hole, and a circle center distance between the feed metalized through hole and the short metalized through hole is 0.04 λ to 0.06 λ, where λ is a working wavelength corresponding to a center frequency of the patch antenna.
In any one of the above technical solutions, further, the octagonal patch is a regular octagon, the outer circle diameter of the octagonal patch is 0.14 λ to 0.18 λ, and the feeding position gap between a first octagonal patch and a second octagonal patch of another patch unit adjacent in the horizontal direction is 0.01 λ.
In any one of the above technical solutions, further, a gap between two adjacent rows of the ground metallization row is 0.025 λ and 0.03 λ.
Among any above-mentioned technical scheme, further, still including preventing the short circuit through-hole on the metal soleplate, prevent that the short circuit through-hole is located the outside of feed metallized through-hole, octagonal paster unit still includes: an electrical connector; the electric connector is arranged in the short-circuit-proof through hole, and a probe of the electric connector extends into and is welded in the feed metalized through hole.
In any of the above technical solutions, further, the distances between the multiple patch units are equal, and a value of the distance is 0.4 λ, where λ is a working wavelength corresponding to a center frequency of the patch antenna.
In any one of the above technical solutions, further, the FSS structural unit is a laminated structure, and includes an upper FSS printed board layer, a middle supporting foam layer, a middle FSS printed board layer, and a lower supporting foam layer in sequence, where the upper FSS printed board layer and the middle FSS printed board layer are of a symmetrical structure, a square patch is printed above the upper FSS printed board layer, and a rectangular patch is printed below the upper FSS printed board layer.
In any of the above technical solutions, further, the side length of each square patch is 0.1 λ to 0.14 λ, the number of the square patches is four, and the center line distance between two adjacent square patches is 1/2 of the distance between patch units.
In any one of the above technical solutions, further, the number of the rectangular patches is three, the rectangular patches are distributed at equal intervals from left to right, and the interval between two adjacent rectangular patches is 1/3 that is the interval between the patch units.
The beneficial effect of this application is:
according to the technical scheme, the two octagonal patches are arranged on the patch unit and matched with the feed metalized via holes, the short circuit metalized via holes and the ground metalized row holes with mutual coupling, effective excitation is achieved, and periodic common mode resonance caused by unbalanced feed is restrained by the short circuit metalized via holes and the ground metalized row holes. And by arranging the symmetrical FSS structure, the ultra-wide angle scanning characteristic of the patch antenna is ensured.
Compared with a conventional oscillator antenna, a slot line antenna and the like, the patch antenna has the advantages of low profile, realizes a light and thin array surface framework, is suitable for the design of the light and thin array surface system framework, can be formed by laminating printed boards, has high processing precision, good consistency and light weight, is convenient for network integration design with monitoring, and is suitable for the design of an integrated array surface system framework; and the antenna has wide bandwidth, and the ultra-wide angle scanning characteristic can be realized by loading the FSS structure.
According to the technical scheme, the octagonal patch form is adopted, the coupling capacitor between the octagonal patches is utilized, the inductance component caused by antenna grounding can be restrained, and the expansion of low-frequency bandwidth is realized. In addition, common mode resonance caused by unbalanced feed can be effectively inhibited through the feed metalized via hole, the short circuit metalized via hole and the grounding metalized row hole among the elements along the E surface of the antenna, so that the high-frequency bandwidth is widened; the antenna array has the change of susceptance in the scanning process, the larger the scanning angle is, the worse the matching is, and aiming at the problem, an FSS wide-angle matching layer is loaded above the antenna, so that the good matching in the ultra-wide-angle scanning process is realized.
Drawings
The advantages of the above and/or additional aspects of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of an ultra-wide angle scanning octagonal patch antenna based on an FSS structure according to one embodiment of the present application;
fig. 2 is a schematic diagram of an octagonal-shaped antenna according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an FSS unit according to an embodiment of the present application;
FIG. 4 is a normal standing wave curve for a patch antenna according to one embodiment of the present application;
fig. 5 is a scanning standing wave profile for a patch antenna according to one embodiment of the present application.
Detailed Description
In order that the above objects, features and advantages of the present application can be more clearly understood, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.
The present embodiment will be described below with reference to fig. 1 to 5.
As shown in fig. 1 and fig. 2, this embodiment realizes an ultra wide angle scanning octagonal patch antenna based on FSS structure, and a plurality of patch units are arranged periodically on the patch antenna, and the patch unit includes FSS constitutional unit and octagonal patch unit that set gradually from top to bottom, and octagonal patch unit includes: the antenna comprises a printed board antenna layer 1, a grounding metalized row hole 6, a feed metalized through hole 4, a short circuit metalized through hole 5 and a metal bottom plate 7;
two-layer printed board antenna layer 1 (divide into upper strata printed board antenna layer and lower floor printed board antenna layer in proper order) and metal bottom plate 7 set gradually from top to bottom, and lower floor printed board antenna layer right edge covers copper metal printing layer (can understand that printed copper in the middle of two-layer printed board) in order to form metal printed board 9, and metal printed board 9 contacts with upper and lower two-layer printed board antenna layer to it is continuous with metal bottom plate 7 through ground connection metallization trompil 6. Two octagonal patches 10 are arranged on the upper printed board antenna layer and are positioned on the left side of the metal printed board 9; the thickness of the two-layer printed board antenna layer 1 is 0.1 lambda to 0.15 lambda.
Further, the octagonal patch 10 is a regular octagon, the outer circle diameter of the octagonal patch 10 is 0.14 λ to 0.18 λ, and the feeding position gap between a first octagonal patch and a second octagonal patch of another patch unit adjacent in the horizontal direction is 0.01 λ.
Specifically, the printed board antenna layer 1 in this embodiment is divided into an upper layer and a lower layer, the thickness of the upper printed board antenna layer is smaller than that of the lower printed board antenna layer, and the metal printed patterns on the surface layer of the upper printed board antenna layer adopt an octagonal form, so that the resistance value changes stably under the condition that the broadband changes, and the impedance matching of the broadband is easily realized.
Meanwhile, a plurality of patch units are periodically arranged on the patch antenna, and by printing patterns on the surface layer of the upper printed board antenna layer, gaps between a first octagonal patch and a second octagonal patch between two adjacent patch units can be utilized, namely the sum of a gap a between the first octagonal patch and the edge line of one patch unit and a gap b between the second octagonal patch and the edge line of the other adjacent patch unit in fig. 2 is 0.01 lambda, so that mutual coupling capacitance is generated, an inductive component caused by the metal bottom plate 7 is compensated, and further bandwidth expansion is realized.
In order to meet the requirements of the broadband and wide-angle scanning performance of the antenna, the electromagnetic field numerical algorithm is combined with a simulation technology, and the purpose of improving the radiation characteristic and the S parameter of the antenna is achieved by optimizing design and performance comparison. In the design optimization stage, the unit spacing is a fixed parameter, the height of the antenna, the size of the octagonal patch and the gap between the patches are mainly adjusted, and the optimal solution is obtained by applying a genetic algorithm and combining matlab and HFSS to perform multi-generation optimization on the corresponding size.
The feed metallized through hole 4 is positioned in the middle position of the left side of the metal printed board 9, two ends of the feed metallized through hole 4 are connected to a first octagonal patch and the metal bottom board 7, the feed metallized through hole 4 is used for feeding electricity to the first octagonal patch, wherein the feed metallized through hole 4 is a through hole and penetrates through the upper and lower printed board antenna layers, the upper end of the feed metallized through hole is communicated with the first octagonal patch in the metal printed pattern on the surface layer of the upper printed board antenna layer, the lower end of the feed metallized through hole is positioned above the metal bottom board 7, and the metal bottom board 7 is also provided with a short circuit prevention through hole concentric with the feed metallized through hole 4;
the short circuit metallization through hole 5 is located on the left side of the feed metallization through hole 4, the short circuit metallization through hole 5 is connected to the second octagonal patch and the metal base plate 7, the short circuit metallization through hole 5 is used for short circuit of the second octagonal patch and the metal base plate 7, wherein the short circuit metallization through hole 5 is a through hole, the upper end of the short circuit metallization through hole is communicated with the second octagonal patch in the metal printed pattern on the surface layer of the upper printed board antenna layer, and the lower end of the short circuit metallization through hole is connected above the metal base plate 7.
Furthermore, the diameter of the feed metalized through hole 4 is equal to the diameter of the short metalized through hole 5 and is 0.025 λ to 0.03 λ, and the circle center distance between the feed metalized through hole 4 and the short metalized through hole 5 is 0.04 λ to 0.06 λ, where λ is the operating wavelength corresponding to the patch antenna center frequency.
Specifically, in the present embodiment, in terms of the feeding mode, a feeding form combining the feeding metalized through hole 4 and the short-circuit metalized through hole 5 is selected, and the structure is easy to implement. And set up the short circuit prevention through hole on the metal bottom plate 7, the short circuit prevention through hole locates at the outside of the metallized through hole 4 of feed, the electric connector 8 for the electricity supply of octagonal patch unit, install in preventing the through hole of short circuit, avoid contacting with metal bottom plate 7, adopt the conventional electric connector, the probe of the electric connector 8 stretches into and welds in the metallized through hole 4 of feed, link with metal patch 10, utilize the electric connector 8 to provide the necessary excitation for patch unit, the model of the electric connector 8 is BMA-JFD94G-T type radio frequency connector. The probes of the electrical connector 8, which protrude from the feed metallized through holes 4, are attached to the surface of the first octagonal patch.
The grounding metallization row hole 6 is a through hole, is arranged on the right side of the lower printed board antenna layer and penetrates through the lower printed board antenna layer, one end of the grounding metallization row hole 6 is located in the middle of the metal printed board 9, the other end of the grounding metallization row hole 6 is located on the metal bottom board 7 (namely the grounding metallization row hole 6 is used for communicating the metal printed board 9 with the metal bottom board 7), and the grounding metallization row hole 6 is used for changing the mutual coupling effect between adjacent patch units, wherein the length of the long side of the metal printed board 9 is equal to the width of the patch units, the distance between the antenna units is 0.4 lambda, and the length of the short side is 0.03 lambda to 0.04 lambda;
however, in consideration of such unbalanced feeding form, common mode current will be generated on the basis of providing differential mode current, causing common mode resonance in the periodically arranged patch elements. Therefore, the metal printed board 9 is arranged on the right side of the chip unit, and the grounding metalized row holes 6 are used for ensuring the good grounding effect of the metal printed board 9, inhibiting common mode resonance and ensuring no matching singular point in a required frequency band.
Furthermore, the gap between two adjacent rows of holes in the ground metallization row 6, i.e. the gap between adjacent cells, is 0.025 λ to 0.03 λ, wherein the ground metallization row 6 is continuously distributed along the H-plane of the antenna, the height of the ground metallization row is 0.08 λ to 0.12 λ, and the H-plane is a plane perpendicular to the electric field direction of the antenna.
The embodiment shows an implementation manner of an FSS structural unit, the FSS structural unit is a laminated structure, and sequentially includes an upper FSS printed board layer 31, a middle supporting foam layer 21, a middle FSS printed board layer 32, and a lower supporting foam layer 22, the upper FSS printed board layer 31 and the middle FSS printed board layer 32 are symmetrical structures, a square patch 11 is printed above the upper FSS printed board layer 31, and a rectangular patch 12 is printed below the upper FSS printed board layer 31. The FSS printed board layer is supported by two layers of boards with the thickness of 1.016mm, the thickness of the middle supporting foam layer 21 is 0.01 lambda to 0.05 lambda, and the thickness of the lower supporting foam layer 22 is 0.07 lambda to 0.11 lambda.
Specifically, as shown in fig. 3, for a conventional phased array antenna, when the phased array antenna is scanned to a large angle, susceptance change is aggravated, so that a good matching effect is difficult to achieve, and in order to achieve a ± 85 ° ultra-wide angle scanning characteristic, an FSS printed board layer arranged in an upper layer and a lower layer is selected as a wide angle matching layer in the embodiment, so that ultra-wide angle scanning matching is effectively achieved. The upper FSS printed board layer 31 and the middle FSS printed board layer 32 are mirror symmetric structures, and the upper FSS printed board layer 31 is described as an example.
As described above, the four square patches 11 are printed on the upper layer of the FSS printed board layer 31 on the upper layer, and the three rectangular patches 12 are printed on the lower layer, and thus, the ultra-wide angle scanning characteristic can be realized by such a structural design.
Further, the side length of the square patch 11 on the upper layer of the FSS printed board layer 31 is 0.1 λ to 0.14 λ, the number of the square patches 11 is four, and the center line distance between two adjacent square patches 11 is 1/2 of the distance between patch units. The number of the rectangular patches 12 below the upper FSS printed board layer 31 is three, the rectangular patches 12 are distributed at equal intervals along the E-plane of the antenna (from left to right), the interval between two adjacent rectangular patches 12 is 1/3 of the interval between patch units, wherein the E-plane of the antenna is a plane parallel to the direction of an electric field, namely a plane perpendicular to the arrangement direction of the grounding metallized row holes 6, the length of each rectangular patch 12 is equal to the width of the upper FSS printed board layer 31, and the width of each rectangular patch 12 is 0.02 lambda to 0.04 lambda.
In order to verify the patch antenna in this embodiment, a corresponding patch antenna is manufactured, and the corresponding structural parameters specifically include:
the total thickness of the FSS structural unit and the octagonal patch unit is 9.87mm, the unit spacing of the patch unit is 11.5mm × 11.5.5 mm, wherein the thicknesses of two printed board antenna layers are 0.762mm and 3.175mm respectively, laminating is carried out through a 0.12mm prepreg, the printed board antenna layer is selected to be ROGERS6002, the thicknesses of two supporting foam layers are 1mm and 2.8mm respectively, the FSS printed board layer is selected to be ROGERS5880, and the thicknesses of the two layers are 1.016 mm.
The octagonal patch unit part has the advantages that the diameter of a circumscribed circle of the octagonal radiating patch 10 is 5.07mm, the gap of a feeding position between two octagonal radiating patches 10 is 0.37mm, and the distance between adjacent units is 0.9 mm; the diameters of the feed metalized through hole 4 and the short circuit metalized through hole 5 are the same and are both 0.9mm, the distance between the circle centers of the feed metalized through hole 4 and the short circuit metalized through hole 5 is 1.57mm, and a short circuit preventing through hole with the diameter of 1.6mm is dug on the metal bottom plate 7 for avoiding the feed metalized through hole 4; the diameter of the grounding metallization row hole 6 is 0.4mm, the height is the same as the height of the lower printed board antenna layer and is 3.175mm, and the metal printed boards 9 are continuously distributed along the H surface of the antenna and have the width of 1.2 mm.
For the FSS structure unit structure, two FSS printed board layers are in mirror symmetry, square patches (metal patterns) 11 and rectangular patches (metal patterns) 12 are arranged periodically, wherein the side length of each square patch 11 is 3.8mm, and the distance between the center positions of adjacent square patches 11 is 5.75 mm; the rectangular patches 12 are equally distributed along one third of the unit interval of the E surface, are continuous along the H surface and have the width of 0.97 mm.
The octagonal patch antenna in the embodiment can be applied to an X wave band (the specific range is 8-12 GHz), a plurality of patch units are periodically arranged on the patch antenna, the patch units are mainly divided into a lower octagonal patch unit and an upper loaded FSS structure, wherein each octagonal patch unit mainly comprises two octagonal radiation patches, a feed metalized via hole 4, a short circuit metalized via hole 5 and a ground metalized via hole 6 for changing mutual coupling, effective excitation is realized by welding an electric connector 8 probe to the feed metalized via hole 4, and periodic common mode resonance brought by unbalanced feed is inhibited by utilizing the short circuit metalized via hole 5 and the ground metalized via hole 6; the FSS structure adopts two layers of printed boards, regular square metal patterns (square patches 11) and strip patterns (rectangular patches 12) are respectively and repeatedly covered, and the FSS structure is integrated with a planar antenna through foam bonding, so that the ultra-wide angle scanning characteristic is realized.
The patch antenna in this embodiment is suitable for signals in an X-band, a plurality of patch units are periodically arranged on the patch antenna, the distances between the plurality of patch units are equal, and the value of the distance is 0.4 λ, where λ is a working wavelength corresponding to a center frequency of the patch antenna.
The patch unit comprises an FSS structure unit and an octagonal patch unit which are sequentially arranged from top to bottom, and the good matching of the patch antenna and the free space during large-angle scanning is realized through the FSS structure unit. The overall thickness of the FSS structural unit is 0.25 λ to 0.35 λ.
The whole patch unit in the patch antenna is formed by laminating a printed board, is integrated with the FSS structure through a foam support, has a low unit section and is suitable for integrated design. Meanwhile, the mature printed board processing technology can realize good unit consistency.
The main performance indexes of the patch antenna in this embodiment are as follows:
the working frequency is as follows: 8-12 GHz (relative bandwidth 40%);
scanning range: plus or minus 85 degrees (within the range of 8.5-10.5 GHz);
standing wave characteristics: the total spatial domain scanning standing wave is less than 2.7.
The antenna model was tested, and the test results are shown in fig. 4 and 5.
As shown in fig. 4, the broadband normal standing wave curve of the present embodiment is shown in which the abscissa represents the operating frequency and the ordinate represents the standing wave (VSWR), and the test curve shows: the standing wave in the non-scanning state (i.e., normal state) of the patch antenna varies with frequency. It can be seen that the operating bandwidth of the normal standing wave covers 8GHz to 12GHz, and the bandwidth is above 40%, i.e. the ratio of the absolute bandwidth to the center frequency.
As shown in fig. 5, a scanning standing wave curve of the present embodiment is shown, wherein the abscissa represents frequency, and the ordinate represents scanning standing waves (VSWR) at various angles, wherein a curve 501 is a scanning standing wave curve with an E-plane scanning angle of 60 °, a curve 502 is a scanning standing wave curve with an H-plane scanning angle of 60 °, a curve 503 is a scanning standing wave curve with an E-plane scanning angle of 85 °, and a curve 504 is a scanning standing wave curve with an H-plane scanning angle of 45 °.
The multiple test curves respectively show return loss conditions under different scanning angles along the two main tangent planes, and the patch antenna in the embodiment is mainly used for carrying out ultra-wide angle scanning optimization aiming at 8.5-10.5 GHz. According to the scanning standing wave result, the ultra-wide angle scanning matching of +/-85 degrees can be effectively realized.
The technical scheme of this application has been explained in detail in the above combination of the accompanying drawings, and this application has proposed an ultra wide angle scanning octagonal patch antenna based on FSS structure, and a plurality of paster units have periodically arranged on it, and the paster unit includes FSS constitutional unit and octagonal patch unit that sets gradually from top to bottom, and octagonal patch unit includes: a metal printed board is arranged at the right edge of the two layers of printed board antenna layers and the lower layer of printed board antenna layer of the metal bottom plate, and two octagonal patches are arranged on the upper layer of printed board antenna layer; one end of the grounding metallized row hole is positioned in the middle of the metal printed board, and the other end of the grounding metallized row hole is positioned on the metal bottom plate so as to change the mutual coupling phase between the adjacent patch units; the feed metallized through hole is positioned in the middle of the left side of the metal printed board and feeds power to the connected octagonal patch; the short circuit metallization through hole is positioned on the left side of the feed metallization through hole and is used for short-circuiting the connected octagonal patch and the metal bottom plate. Through the technical scheme in the application, the patch antenna with the ultra-wide angle scanning characteristic is realized, the broadband wide angle scanning characteristic is good, and the section is low.
The steps in the present application may be sequentially adjusted, combined, and subtracted according to actual requirements.
The units in the device can be merged, divided and deleted according to actual requirements.
Although the present application has been disclosed in detail with reference to the accompanying drawings, it is to be understood that such description is merely illustrative and not restrictive of the application of the present application. The scope of the present application is defined by the appended claims and may include various modifications, adaptations, and equivalents of the invention without departing from the scope and spirit of the application.
Claims (9)
1. The utility model provides an ultra wide angle scanning octagonal patch antenna based on FSS structure, a plurality of paster units of having arranged periodically on the patch antenna, the paster unit is including FSS constitutional unit and the octagonal patch unit that sets gradually from top to bottom, octagonal patch unit includes: the antenna comprises a printed board antenna layer, a grounding metalized row hole, a feed metalized through hole, a short circuit metalized through hole and a metal bottom board;
the two layers of printed board antenna layers and the metal bottom plate are sequentially arranged from top to bottom, a metal printed board is arranged at the right edge of the lower layer of printed board antenna layer, and two octagonal patches are arranged on the upper layer of printed board antenna layer and are positioned on the left side of the metal printed board;
one end of the grounding metallization row hole is positioned in the middle of the metal printed board, the other end of the grounding metallization row hole is positioned on the metal bottom board, and the grounding metallization row hole is used for changing the mutual coupling phase between the adjacent patch units;
the feed metalized through hole is positioned in the middle of the left side of the metal printed board, is connected to the first octagonal patch and the metal bottom board, and is used for feeding electricity to the first octagonal patch;
the short circuit metallization through hole is located the left side of feed metallization through hole, the short circuit metallization through hole is connected in second octagon paster with the metal bottom plate, the short circuit metallization through hole be used for with second octagon paster with the metal bottom plate short circuit.
2. An ultra-wide angle scanning octagonal patch antenna based on an FSS structure, as claimed in claim 1, wherein the diameter of the feed metalized via is equal to the diameter of the short circuit metalized via, and the circle center distance between the feed metalized via and the short circuit metalized via is 0.04 λ to 0.06 λ, where λ is the operating wavelength corresponding to the patch antenna center frequency.
3. An ultra-wide angle scanning octagonal patch antenna based on an FSS structure, as claimed in claim 2, wherein the octagonal patch is a regular octagon, the outer circle diameter of the octagonal patch is 0.14 λ to 0.18 λ, and the feed position gap between the first octagonal patch and the second octagonal patch is 0.01 λ.
4. An ultra-wide angle scanning octagonal patch antenna based on an FSS structure, as claimed in claim 2, wherein a gap between two adjacent ones of the ground metallization rows is between 0.025 λ and 0.03 λ.
5. The FSS structure-based ultra-wide angle scanning octagonal patch antenna according to any one of claims 1 to 4, wherein the metal base plate further comprises a short-circuit prevention through hole thereon, the short-circuit prevention through hole being located outside the feed metalized through hole, the octagonal patch unit further comprises: an electrical connector;
the electric connector is arranged in the short-circuit-proof through hole, and a probe of the electric connector extends into and is welded in the feed metalized through hole.
6. An ultra-wide angle scanning octagonal patch antenna based on an FSS structure as claimed in claim 1, wherein the spacing between the patch elements is equal, and the spacing is 0.4 λ, wherein λ is the operating wavelength corresponding to the central frequency of the patch antenna.
7. The FSS structure-based ultra-wide angle scanning octagonal patch antenna is characterized in that an FSS structural unit is of a laminated structure and sequentially comprises an upper FSS printed board layer, a middle supporting foam layer, a middle FSS printed board layer and a lower supporting foam layer, wherein the upper FSS printed board layer and the middle FSS printed board layer are of symmetrical structures, square patches are printed above the upper FSS printed board layer, and rectangular patches are printed below the upper FSS printed board layer.
8. An ultra-wide angle scanning octagonal patch antenna based on an FSS structure, as claimed in claim 7, wherein the sides of the square patches are 0.1 λ to 0.14 λ, the number of the square patches is four, and the center line spacing between two adjacent square patches is 1/2 of the spacing between the patch elements.
9. An ultra-wide angle scanning octagonal patch antenna based on an FSS structure, as claimed in claim 7, wherein the number of the rectangular patches is three, the rectangular patches are equally spaced from left to right, and the spacing between two adjacent rectangular patches is 1/3 of the spacing between the patch elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010098789.4A CN111326855B (en) | 2020-02-18 | 2020-02-18 | FSS structure-based ultra-wide angle scanning octagonal patch antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010098789.4A CN111326855B (en) | 2020-02-18 | 2020-02-18 | FSS structure-based ultra-wide angle scanning octagonal patch antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111326855A true CN111326855A (en) | 2020-06-23 |
| CN111326855B CN111326855B (en) | 2022-04-01 |
Family
ID=71168858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010098789.4A Active CN111326855B (en) | 2020-02-18 | 2020-02-18 | FSS structure-based ultra-wide angle scanning octagonal patch antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111326855B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112290207A (en) * | 2020-10-10 | 2021-01-29 | 中国电子科技集团公司第十四研究所 | Communication is with wide angle scanning antenna unit of broadband |
| CN113488773A (en) * | 2021-06-04 | 2021-10-08 | 荣耀终端有限公司 | Common patch antenna with complementary directional diagrams and electronic equipment |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050057431A1 (en) * | 2003-08-25 | 2005-03-17 | Brown Stephen B. | Frequency selective surfaces and phased array antennas using fluidic dielectrics |
| CN107017470A (en) * | 2017-04-12 | 2017-08-04 | 电子科技大学 | A kind of low section Scanning Phased Array Antenna with Broadband based on strong mutual coupling effect |
| CN107275775A (en) * | 2017-06-23 | 2017-10-20 | 西安电子科技大学 | Ultra wide band array antenna |
| CN108493625A (en) * | 2018-03-12 | 2018-09-04 | 电子科技大学 | The low scattering close coupling ultra wide band phased array of modified low section |
| CN108539435A (en) * | 2018-04-09 | 2018-09-14 | 电子科技大学 | Scanning Phased Array Antenna with Broadband based on slot antenna and frequency-selective surfaces |
| CN109216936A (en) * | 2018-09-11 | 2019-01-15 | 电子科技大学 | A kind of Scanning Phased Array Antenna with Broadband based on the arrangement of triangle grid |
| CN109273836A (en) * | 2018-08-30 | 2019-01-25 | 电子科技大学 | Wideband wide scan antenna based on coupled dipole and anisotropy matching layer |
| CN109346837A (en) * | 2018-09-28 | 2019-02-15 | 电子科技大学 | A kind of ultra wide band wide-angle scanning phased array based on magnetoelectricity dipole antenna |
| CN109616759A (en) * | 2018-12-06 | 2019-04-12 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Full duplex active phased array filter antenna front |
| CN109888488A (en) * | 2019-04-04 | 2019-06-14 | 电子科技大学 | The low scattering ultra wide band phased array of low section based on the load of polarization selectivity wave absorbing device |
| CN110011044A (en) * | 2019-04-15 | 2019-07-12 | 电子科技大学 | Ultralow section close coupling ultra wide band phased array based on magnetic medium type artificial magnetic conductor |
| CN110707421A (en) * | 2019-09-06 | 2020-01-17 | 南京理工大学 | Dual-polarization tightly-coupled phased array antenna based on end overlapping |
-
2020
- 2020-02-18 CN CN202010098789.4A patent/CN111326855B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050057431A1 (en) * | 2003-08-25 | 2005-03-17 | Brown Stephen B. | Frequency selective surfaces and phased array antennas using fluidic dielectrics |
| CN107017470A (en) * | 2017-04-12 | 2017-08-04 | 电子科技大学 | A kind of low section Scanning Phased Array Antenna with Broadband based on strong mutual coupling effect |
| CN107275775A (en) * | 2017-06-23 | 2017-10-20 | 西安电子科技大学 | Ultra wide band array antenna |
| CN108493625A (en) * | 2018-03-12 | 2018-09-04 | 电子科技大学 | The low scattering close coupling ultra wide band phased array of modified low section |
| CN108539435A (en) * | 2018-04-09 | 2018-09-14 | 电子科技大学 | Scanning Phased Array Antenna with Broadband based on slot antenna and frequency-selective surfaces |
| CN109273836A (en) * | 2018-08-30 | 2019-01-25 | 电子科技大学 | Wideband wide scan antenna based on coupled dipole and anisotropy matching layer |
| CN109216936A (en) * | 2018-09-11 | 2019-01-15 | 电子科技大学 | A kind of Scanning Phased Array Antenna with Broadband based on the arrangement of triangle grid |
| CN109346837A (en) * | 2018-09-28 | 2019-02-15 | 电子科技大学 | A kind of ultra wide band wide-angle scanning phased array based on magnetoelectricity dipole antenna |
| CN109616759A (en) * | 2018-12-06 | 2019-04-12 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Full duplex active phased array filter antenna front |
| CN109888488A (en) * | 2019-04-04 | 2019-06-14 | 电子科技大学 | The low scattering ultra wide band phased array of low section based on the load of polarization selectivity wave absorbing device |
| CN110011044A (en) * | 2019-04-15 | 2019-07-12 | 电子科技大学 | Ultralow section close coupling ultra wide band phased array based on magnetic medium type artificial magnetic conductor |
| CN110707421A (en) * | 2019-09-06 | 2020-01-17 | 南京理工大学 | Dual-polarization tightly-coupled phased array antenna based on end overlapping |
Non-Patent Citations (1)
| Title |
|---|
| JINGNI ZHONG等: "2 to 18 GHz ultra-wideband dual-linear polarized phased array with 60° scanning", 《2018 INTERNATIONAL APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY SYMPOSIUM (ACES)》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112290207A (en) * | 2020-10-10 | 2021-01-29 | 中国电子科技集团公司第十四研究所 | Communication is with wide angle scanning antenna unit of broadband |
| CN112290207B (en) * | 2020-10-10 | 2024-04-19 | 中国电子科技集团公司第十四研究所 | Wide-bandwidth angle scanning antenna unit for communication |
| CN113488773A (en) * | 2021-06-04 | 2021-10-08 | 荣耀终端有限公司 | Common patch antenna with complementary directional diagrams and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111326855B (en) | 2022-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111370860A (en) | Strong coupling ultra wide band phased array antenna based on interdigital resistive surface loading | |
| CN109687116B (en) | C-band miniaturized broadband wide-beam circularly polarized microstrip antenna | |
| CN110492242B (en) | Ultra-thin half-wall short-circuit circularly polarized top radiation antenna | |
| CN108598691B (en) | Broadband wide-angle scanning phased-array antenna based on flat-plate long-slot antenna | |
| CN114744409B (en) | Ten-fold frequency-range dual-polarized strong-coupling phased array antenna loaded by resistive material | |
| CN111326855B (en) | FSS structure-based ultra-wide angle scanning octagonal patch antenna | |
| CN113097736B (en) | Novel frequency and wave beam reconfigurable antenna | |
| CN112688079A (en) | Dual-polarized wide beam antenna based on loading bent grounding metal column | |
| US20230420848A1 (en) | Tightly coupled array antenna and network device | |
| CN111710973A (en) | Stacked differential broadband base station antenna | |
| CN113644425A (en) | Wide-bandwidth beam antenna for short-distance vehicle-mounted radar | |
| CN114583442B (en) | Antenna unit and omni-directional dipole antenna | |
| CN108767449B (en) | Multi-system fusion antenna based on AMC structure | |
| CN112701471B (en) | All-dielectric integrated ultra-wideband low-profile polymorphic conformal phased array antenna | |
| CN113690595A (en) | Wide-beam antenna unit and phased array | |
| CN116895953A (en) | Dual-polarized ultra-wide bandwidth angle scanning tight coupling curved surface array antenna | |
| CN109524799B (en) | Directional diagram scanning patch antenna loaded with variable capacitance diode | |
| CN115084872B (en) | Ultra-wide bandwidth scanning angle tight coupling phased array antenna | |
| CN115775968A (en) | Satellite-borne ultra-wideband low-profile lightweight array antenna | |
| CN113964489A (en) | Wide-angle scanning phased-array antenna based on bent gaps | |
| CN112382850A (en) | Miniaturized yagi antenna suitable for 5G communication and manufacturing method thereof | |
| CN110867645A (en) | Microstrip array antenna | |
| CN118040344B (en) | Ultra-wideband planar modularized 45-degree oblique polarization phased array antenna | |
| CN114709602B (en) | Antenna and communication equipment | |
| CN116666974B (en) | Double-feed polarization-changeable ultra-wideband microstrip oscillator antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |