CN116683173A - Single-layer miniaturized double-frequency positioning antenna - Google Patents
Single-layer miniaturized double-frequency positioning antenna Download PDFInfo
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- CN116683173A CN116683173A CN202310905865.1A CN202310905865A CN116683173A CN 116683173 A CN116683173 A CN 116683173A CN 202310905865 A CN202310905865 A CN 202310905865A CN 116683173 A CN116683173 A CN 116683173A
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- 239000002356 single layer Substances 0.000 title claims abstract description 48
- 239000002184 metal Substances 0.000 claims abstract description 227
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 230000009977 dual effect Effects 0.000 claims abstract 2
- 239000004020 conductor Substances 0.000 claims description 13
- 240000004282 Grewia occidentalis Species 0.000 claims description 10
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 230000010354 integration Effects 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005388 cross polarization Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
Classifications
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- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application relates to the technical field of microwave communication. A single layer miniaturized dual frequency positioning antenna comprising: the top-layer metal structure comprises a first metal patch and a second metal patch, wherein the central area of the first metal patch is the second metal patch, and a proper interval is reserved between the first metal patch and the second metal patch for electromagnetic energy coupling; the dielectric substrate is arranged below the top metal structure and is attached to the top metal structure; the bottom metal structure is arranged below the dielectric substrate and is attached to the dielectric substrate; the quantity of through-hole is a plurality of, and a plurality of through-holes include a plurality of first through-holes and a plurality of second through-holes, and a plurality of first through-holes distribute on first metal paster, and a plurality of second through-holes distribute on the second metal paster. The miniaturization and easy integration of the antenna are realized, and the problems of oversized antenna and too high section are solved.
Description
Technical Field
The application relates to the technical field of microwave communication, in particular to a single-layer miniaturized double-frequency positioning antenna.
Background
Microstrip antennas are widely used in the satellite positioning field due to their small size, low cost, easy integration, etc. However, as the application range of the satellite positioning system continues to expand and the trend of miniaturization of the wireless communication device continues to increase, demands for high precision, multiple frequency bands, miniaturization, light weight and the like are put forward for the antenna. Conventional positioning antennas often adopt a multi-antenna technology to meet the system requirements of multiple frequency bands, and the technology can bring about the problem that the horizontal or vertical dimension of the antenna is too large, which is not beneficial to realizing the miniaturization of wireless communication equipment.
At present, the size of the single-layer double-frequency positioning antenna can be optimized to be 52mm multiplied by 10mm, the radiator of the antenna is still in the traditional microstrip patch form, and the radiator can be optimized in the modes of increasing the patch size, improving the antenna section, forming rectangular grooves at the edge of the patch and the like in order to cover low frequencies.
The method can lead to the oversized antenna, can not realize miniaturization and can influence the performance of the antenna, thereby further reducing the size of the positioning antenna, maintaining multi-band coverage and high precision, meeting the requirements of miniaturization and integration of the antenna and being the problem to be solved.
Disclosure of Invention
The application provides a single-layer miniaturized double-frequency positioning antenna which is used for solving the problems of larger size and low integration level of the existing double-frequency positioning antenna.
The application provides a single-layer miniaturized dual-frequency positioning antenna, which comprises:
the top-layer metal structure comprises a first metal patch and a second metal patch, wherein the central area of the first metal patch is the second metal patch, and a space is arranged between the first metal patch and the second metal patch and is used for electromagnetic energy coupling;
the dielectric substrate is arranged below the top metal structure and is attached to the top metal structure;
the bottom metal structure is arranged below the dielectric substrate and is attached to the dielectric substrate;
the number of the through holes is multiple, the through holes comprise a plurality of first through holes and a plurality of second through holes, the first through holes are distributed on the first metal patch, the second through holes are distributed on the second metal patch, and holes are formed in the dielectric substrate and the bottom metal structure corresponding to the first through holes and the second through holes, so that the inner conductor of the coaxial line is fixedly connected with the first metal patch or the second metal patch after passing through the through holes; wherein, the liquid crystal display device comprises a liquid crystal display device,
the working state of the low-frequency part of the single-layer miniaturized double-frequency positioning antenna is as follows:
the first metal patch feeds via the coaxial line inner conductor passing through the first through hole, and the first metal patch couples electromagnetic energy to the second metal patch so that the first metal patch and the second metal patch integrally show half-wave standing wave distribution, thereby exciting TM of low frequency of the antenna 10 A mode;
the working state of the high-frequency part of the single-layer miniaturized double-frequency positioning antenna is as follows:
the second metal patch is fed by the coaxial line inner conductor passing through the second through hole so as to enable the second metal patch to present half-wave standing wave distribution, thereby exciting TM of high frequency of the antenna 10 A mode.
In one embodiment, the circuit further includes a plurality of through holes, the through holes are in a tubular structure, one end edge of the tubular structure is connected with the first metal patch, the other end is connected with the bottom metal structure, and the through holes are used for extending a current path of the first metal patch.
In one implementation manner, the first metal patch is a metal patch with a dipole structure loaded at four corners; the first metal patch is in a central symmetrical pattern.
In one implementation, the outline of the first metal patch is a rectangular structure, and the four-corner structure of the first metal patch is a dipole structure.
In one implementation, the outline of the second metal patch is rectangular, and the edge of the second metal patch is concave to form a first groove; the four corners of second metal paster all have the first breach to the central extension, and first breach is the step rectangular channel, and first breach is including first breach section and the second breach section that connects gradually, and first breach section and second breach section extend by the angle of second metal paster to the center.
In one embodiment, the first metal patch surrounding the area of each first groove has a through hole.
In one implementation manner, the first metal patch is a metal patch with a four-corner loading folded dipole structure; the first metal patch is in a central symmetrical pattern.
In one implementation, the outline of the first metal patch is a rectangular structure, and the four corners of the first metal patch are bent inward at the tail ends of the dipole structure to form a folded dipole structure.
In one implementation manner, the second metal patch is a metal patch with a folded dipole structure loaded at four corners; the second metal patch is in a central symmetrical pattern.
In one implementation, the outline of the second metal patch is rectangular, and the four-corner structure of the second metal patch is that the tail end of the dipole structure is bent inwards to form a folded dipole structure.
In one implementation, the second metal patches are concave into second grooves, and the first metal patch in the area surrounded by each second groove is provided with a through hole.
The application relates to a single-layer miniaturized dual-frequency positioning antenna, which is formed by laminating a top metal structure, a dielectric substrate and a bottom metal structure. The top metal structure includes a first metal patch and a second metal patch, the central region of the first metal patch being the second metal patch, that is, the first metal patch surrounding the second metal patch, and there being a spacing between the first metal patch and the second metal patch for electromagnetic energy coupling. The quantity of the through holes is a plurality of, and the plurality of through holes comprise a plurality of first through holes and a plurality of second through holes, wherein the plurality of first through holes are distributed on the first metal patch, and the plurality of second through holes are distributed on the second metal patch. Holes are formed in the dielectric substrate and the bottom metal structure corresponding to the first through hole and the second through hole, so that the inner conductor of the coaxial line passes through the holes and is fixedly connected with the first metal patch or the second metal patch.
Under the structure, the working state of the low-frequency part of the single-layer miniaturized double-frequency positioning antenna is as follows:
the first metal patch feeds via the coaxial line inner conductor passing through the first through hole, and the first metal patch couples electromagnetic energy to the second metal patch so that the first metal patch and the second metal patch integrally show half-wave standing wave distribution, thereby exciting TM of low frequency of the antenna 10 A mode.
The working state of the high-frequency part of the single-layer miniaturized double-frequency positioning antenna is as follows:
the second metal patch is fed via the coaxial line inner conductor passing through the second through hole to make the second metal patch show half-wave standing wave distribution, thereby exciting TM of antenna high frequency 10 A mode.
The structure ensures that the single-layer miniaturized double-frequency positioning antenna simultaneously works with the first metal patch and the second metal patch under the working state of the low-frequency part, and excites TM of the low frequency of the antenna 10 A mode. The structure can effectively excite the low-frequency resonance mode of the antenna under a smaller size, and the low-frequency coverage of the antenna is realized. Correspondingly, in the working state of the high-frequency part of the single-layer miniaturized double-frequency positioning antenna, the second metal patch works independently, shows half-wave standing wave distribution, and excites TM of the high frequency of the antenna 10 A mode. By loading the step impedance grooves at four corners, the matching level of the antenna at the high frequency part is improved, and the high frequency resonance mode of the antenna can be effectively excited under a smaller size, so that the high frequency coverage of the antenna is realized. The antenna has the advantages of reducing the cost of the antenna, realizing miniaturization and easy integration of the antenna, and solving the problems of oversized antenna size and overhigh section.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a top view of a metal patch with a four-corner loaded dipole structure as a first metal patch in a top metal structure of a single-layer miniaturized dual-frequency positioning antenna;
FIG. 2 is a top view of a metal patch with a four-corner loaded folded dipole structure for a first metal patch and a second metal patch in a top metal structure of a single-layer miniaturized dual-band positioning antenna according to the present application;
FIG. 3 is a top view of the underlying metal structure of a single-layer miniaturized dual-band positioning antenna of the present application;
FIG. 4 is a side cross-sectional view of a single-layer miniaturized dual-band positioning antenna of the present application;
FIG. 5 is a graph showing the low frequency response of a single-layer miniaturized dual-band positioning antenna in the low frequency part operating state; FIG. 6 is a graph showing the high frequency response of a single-layer miniaturized dual-band positioning antenna in the high frequency part operating state; FIG. 7 is a xoz radiation pattern of a single-layer miniaturized dual-band positioning antenna with an antenna simulation direction of 1.176 GHz;
FIG. 8 is a yoz radiation pattern of a single-layer miniaturized dual-band positioning antenna with an antenna simulation direction of 1.176 GHz;
FIG. 9 is a xoz radiation pattern of a single-layer miniaturized dual-band positioning antenna with an antenna simulation direction of 1.584 GHz;
fig. 10 is a yoz radiation pattern of the antenna simulation direction 1.584GHz of the single-layer miniaturized dual-frequency positioning antenna.
Reference numerals:
1-a top layer metal structure; 11-a first metal patch; 111-band-shaped notch; 112-dipole structure; 12-a second metal patch; 121-a first groove; 122-a first gap; 123-a second groove; 124-folded dipole structure; 2-a dielectric substrate; 3-underlying metal structure; 41-a first through hole; 42-a second through hole; 5-a through hole; 6-coaxial line.
Detailed Description
The technical solutions of the present application will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
In order to facilitate the technical solution of the application, some concepts related to the present application will be described below first.
TM 10 The mode refers to that an electric field presents a half-wave standing wave distribution form along the transmission direction of the antenna, and a magnetic field is transmitted along the antennaThe directional component is zero.
As shown in fig. 1-4, wherein only a portion of the dipole structure 112 and the folded dipole structure 124 are shown in fig. 1 and 2 with dashed lines, it should not be understood that only the dashed lines are framed to the dipole structure 112 and the folded dipole structure 124.
The application provides a single-layer miniaturized dual-frequency positioning antenna which comprises a top metal structure 1, a dielectric substrate 2, a bottom metal structure 3, a through hole 5 and a through hole.
Wherein the top metal structure 1, the dielectric substrate 2 and the bottom metal structure 3 are stacked.
The top metal structure 1 comprises a first metal patch 11 and a second metal patch 12, the first metal patch 11 surrounding the second metal patch 12, that is to say, the first metal patch 11 is arranged around the second metal patch 12, specifically, a central area of the first metal patch 11 is the second metal patch 12, and a space is provided between the first metal patch 11 and the second metal patch 12, wherein the space is used for electromagnetic energy coupling.
The first metal patch 11 may be a metal patch with four corners of the dipole structure 112 or a metal patch with four corners of the folded dipole structure 124 as desired. The first metal patch 11 is in a central symmetrical pattern.
The second metal patch 12 may be a four-corner loaded stepped rectangular slot metal patch or a four-corner loaded folded dipole structure 124 metal patch as desired. The second metal patch 12 is in a centrally symmetrical pattern.
The single-layer miniaturized double-frequency positioning antenna further comprises a plurality of through holes 5, and the through holes 5 are of cylindrical structures to form grounding metallized through holes. The edge of one end of the through hole 5 of the tubular structure is connected with the first metal patch 11 of the top metal structure 1, the other end of the through hole 5 is connected with the bottom metal structure 2, and the through hole 5 is used for prolonging the current path of the first metal patch 11.
In one embodiment, as shown in fig. 1, the first metal patch is quadrangled with a dipole structure 112; adjacent sides of the four corners of the rectangular first metal patch 11 are collinear, and a band-shaped notch 111 extending toward the center of the first metal patch 11 is provided in the collinear position. Specifically, in fig. 1, adjacent sides at four corners of the first metal patch 11 are collinear, which corresponds to removal of four corners of the first metal patch 11.
Accordingly, in the case that the first metal patch 11 is a metal patch with four corners loaded with the dipole structure 112, as shown in fig. 1, the outline of the second metal patch 12 is rectangular, and the sides of the second metal patch 12 are concave to form the first grooves 121, that is, the number of the first grooves 121 is four; the four corners of the second metal patch 12 are provided with first notches 122 extending towards the center, the first notches 122 are step rectangular grooves, the first notches 122 comprise first notch sections and second notch sections which are sequentially connected, and the first notch sections and the second notch sections extend from the corners of the rectangle towards the center; the relative wall distance of the first notch section is smaller than that of the second notch section.
The first metal patch 11 of the area surrounded by each first groove 121 is provided with a through hole 5.
In this embodiment, the parasitic dipole structure 112, the stepped rectangular groove and the through hole 5 can increase the current path, and similarly, the profile shapes of the first metal patch 11 and the second metal patch 12 can increase the current path, so that the antenna low frequency and high frequency coverage can be realized in a smaller size.
In one embodiment, as shown in fig. 2, the dipole arm ends of the first metal patch 11 are bent twice in succession to form a folded dipole structure 124; adjacent edges at four corners of the second metal patch 12 are collinear, and a band-shaped notch 111 extending toward the center of the second metal patch 12 is provided at the collinear position.
Accordingly, in the case that the first metal patch 11 is a metal patch with four corners of the folded dipole structure 124, the outline of the second metal patch 12 is rectangular, and four corners of the second metal patch 12 are the folded dipole structure 124. Specifically, the edges of the second metal patch 12 are recessed to form the second grooves 123, that is, the number of the second grooves 123 is four; the four corners of the second metal patch 12 are respectively provided with a folded dipole structure 124 extending towards the center of the second metal patch 12, the folded dipole structure 124 comprises a third notch section and a fourth notch section, the third notch section extends from the corner of the second metal patch 12 to the center of the second metal patch 12, the fourth notch section is crossed with the third notch section, two ends of the fourth notch section are bent once towards the corner of the second metal patch 12, and the bent angle is 90 degrees.
The first metal patch 11 of the area surrounded by each second groove 123 is provided with a through hole 5.
In this embodiment, the folded dipole structure 124 and the through hole 5 can increase the current path, so as to improve the low-frequency coverage capability of the antenna. Similarly, the contour shapes of the first metal patch 11 and the second metal patch 12 can increase the current path, further reduce the size of the antenna, and realize the low-frequency and high-frequency coverage of the antenna in a smaller size.
In one embodiment, the single-layer miniaturized dual-frequency positioning antenna comprises a plurality of through holes, the plurality of through holes comprise a plurality of first through holes 41 and a plurality of second through holes 42, the plurality of first through holes 41 are distributed on the first metal patch 11, and the plurality of second through holes 42 are distributed on the second metal patch 12, so that an inner conductor of the coaxial line 6 can sequentially pass through the bottom metal structure 3 and the dielectric substrate 2 to be welded with the first metal patch 11 or the second metal patch 12, wherein the number of the first through holes 41 is two and is distributed on the first metal patch 11; the number of the second through holes 42 is two, and the second through holes are distributed on the second metal patch 12.
The coaxial line 6 is arranged outside the bottom metal structure 3, and the inner conductor of the coaxial line 6 sequentially passes through the hole on the bottom metal structure 3 and the hole on the dielectric substrate 2 to extend to the first metal patch 11 and are connected, so that the coaxial line 6 feeds the first metal patch 11.
The working state of the low-frequency part of the single-layer miniaturized double-frequency positioning antenna is as follows:
the first metal patch 11 is fed via the inner conductor of the coaxial line 6 connected through the first via 41, and the first metal patch 11 couples electromagnetic energy to the second metal patch 12 so that the first metal patch 11 and the second metal patch 12 as a whole exhibit a half-wave standing wave distribution, thereby exciting an antenna low frequency mode, e.g., exciting TM of the antenna low frequency 10 The mode may be such that the current path is extended by the dipole structure 112 and the through-hole 5 as shown in fig. 1, or by the folded dipole structure as shown in fig. 2124 and the through-hole 5 extend the current path. In addition, the matching level of the antenna can be effectively improved by changing the diameter and the position of the through hole 5, and the performance of the antenna is further optimized.
The working state of the high-frequency part of the single-layer miniaturized double-frequency positioning antenna is as follows:
the second metal patch 12 is fed via the inner conductor of the coaxial line 6 connected through the second through hole 42 so that the second metal patch 12 exhibits a half-wave standing wave distribution, thereby exciting the antenna high frequency mode, e.g., exciting TM of the antenna high frequency 10 In the mode, the current path is extended by loading a stepped rectangular slot at four corners as shown in fig. 1, and the current path may be extended by folding the dipole structure 124 as shown in fig. 2. The step rectangular groove refers to the first notch 122. Meanwhile, the structure has better impedance characteristics at high frequency, so that the antenna matching level is further optimized.
In this embodiment, when the antenna low frequency part is in operation, the first metal patch 11 and the second metal patch 12 have a space therebetween for electromagnetic energy coupling, so that when the antenna low frequency part is in operation, the first metal patch 11 and the second metal patch 12 integrally present half-wave standing wave distribution, thereby exciting the TM of the antenna low frequency 10 A mode. That is, the low frequency part of the antenna is completed by the first metal patch 11 and the second metal patch 12 together, and compared with the existing antenna which adopts independent metal patches to realize low frequency coverage, the proposed antenna can reduce the volume of the single-layer double-frequency positioning antenna and realize miniaturization. In addition, as shown in fig. 2, the folded dipole structure 124 is further used on the first metal patch 11 and the second metal patch 12, so that the volume of the single-layer dual-band positioning antenna can be further reduced, and the single-layer miniaturized dual-band positioning antenna is exemplified to have specific dimensions of 45mm×45mm×3mm, that is, the dimension at the low-frequency of 1.176GHz is 0.176 lambda 0 ×0.176λ 0 ×0.012λ 0 The antenna cost is reduced.
Examples
One design case of the present application is set forth below. The structure of the single-layer miniaturized dual-frequency positioning antenna is shown in fig. 1. In order to conform to the environment of the actual antenna, the method simulates the infinite amplitudeSimulation of the antenna was performed at ground size, and the antenna matching response and gain are shown in fig. 5 and 6. The low frequency center frequency point is 1.176GHz, and the frequency point gain is 5.49dBi. The high frequency center frequency point is 1.584GHz, and the frequency point gain is 6.04dBi. Fig. 7 and 8 are antenna patterns of the case antenna at 1.176GHz, fig. 9 and 10 are antenna patterns at 1.584GHz, and it can be seen that the antenna has a front-to-back ratio of less than-19 dB at 1.176GHz, cross polarization of less than-35 dB, antenna has a front-to-back ratio of less than-15 dB at 1.176GHz, and cross polarization of less than-25 dB. The substrate used in this case was a substrate having a dielectric constant of 5.9 and a loss angle of 0.0035. The antenna has a length of 50mm, a width of 50mm, and a thickness of 5mm, i.e. a dimension of 0.196 lambda at a low frequency of 1.176GHz 0 ×0.196λ 0 ×0.02λ 0 。
In summary, the single-layer miniaturized dual-frequency positioning antenna provided by the application has the following beneficial effects:
1. the metal patch with the dipole structure loaded at four corners and the metal patch with the step rectangular groove loaded at four corners are used as the low-frequency radiator of the antenna, so that the low-frequency working mode of the antenna can be effectively excited under a smaller size, the size of the low-frequency radiator of the antenna is reduced, and the miniaturization of the antenna is realized.
2. The metal patch with four corners loaded with the step rectangular grooves is used as the high-frequency radiator of the antenna, so that the matching level of the antenna of the high-frequency part is improved, the resonant mode of the high frequency of the antenna can be effectively excited under a smaller size, the size of the high-frequency radiator of the antenna is reduced, and the miniaturization of the antenna is realized.
3. The metal patch with the four-corner loading folded dipole structure is used as an antenna radiator, the plane size and the section height of the antenna can be further reduced through the folded dipole arms, the miniaturization of the antenna is realized, and the cost of the antenna is reduced.
Compared with the existing positioning antenna, the application effectively reduces the size of the single-layer double-frequency positioning antenna, reduces the cost of the single-layer double-frequency positioning antenna, and realizes miniaturization and easy integration of the antenna.
Finally, it should be noted that: the foregoing examples merely illustrate specific embodiments of the application, which are described in greater detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application.
Claims (10)
1. A single-layer miniaturized dual-band positioning antenna, comprising:
a top metal structure comprising a first metal patch and a second metal patch, wherein the central region of the first metal patch is the second metal patch, and a space is arranged between the first metal patch and the second metal patch, and is used for electromagnetic energy coupling;
the dielectric substrate is arranged below the top metal structure and is attached to the top metal structure;
the bottom metal structure is arranged below the dielectric substrate and is attached to the dielectric substrate;
the number of the through holes is multiple, the through holes comprise a plurality of first through holes and a plurality of second through holes, the first through holes are distributed on the first metal patch, the second through holes are distributed on the second metal patch, and the holes are formed in the dielectric substrate and the bottom metal structure corresponding to the first through holes and the second through holes, so that the inner conductor of the coaxial line is fixedly connected with the first metal patch or the second metal patch after passing through the through holes; wherein, the liquid crystal display device comprises a liquid crystal display device,
the working state of the low-frequency part of the single-layer miniaturized double-frequency positioning antenna is as follows:
the first metal patch is fed by the coaxial line inner conductor passing through the first through hole, and couples electromagnetic energy to the second metal patch so that the first metal patch and the second metal patch integrally show half-wave standing wave distribution, thereby exciting TM of antenna low frequency 10 A mode;
the working state of the high-frequency part of the single-layer miniaturized double-frequency positioning antenna is as follows:
the second metal patch is fed by the coaxial line inner conductor passing through the second through hole so as to enable the second metal patch to present half-wave standing wave distribution, thereby exciting TM of high frequency of the antenna 10 A mode.
2. The single-layer miniaturized dual-band positioning antenna of claim 1 further comprising a plurality of through holes, wherein the through holes are in a tubular structure, one end edge of the tubular structure is connected with the first metal patch, the other end is connected with the bottom metal structure, and the through holes are used for prolonging the current path of the first metal patch.
3. The single-layer miniaturized dual-band positioning antenna of claim 2 wherein the first metal patch is a quadrangle-loaded dipole structured metal patch; the first metal patch is in a central symmetrical pattern.
4. A single-layer miniaturized dual-band positioning antenna according to claim 3, wherein the outline of the first metal patch is a rectangular structure, and the four-corner structure of the first metal patch is a dipole structure.
5. The single-layer miniaturized dual-band positioning antenna of claim 4 wherein the outline of the second metal patch is rectangular, and the edges of the second metal patch are concave to form a first groove; the four corners of second metal paster all have the first breach to the central extension, first breach is step rectangular channel, first breach is including first breach section and the second breach section that connects gradually, first breach section with the second breach section by the angular extension of second metal paster is to the center.
6. The single layer miniaturized dual band positioning antenna of claim 5 wherein the first metal patch of each of the areas surrounded by the first grooves has the through-hole thereon.
7. The single-layer miniaturized dual-band positioning antenna of claim 2 wherein the first metal patch is a four-corner loaded folded dipole structured metal patch; the first metal patch is in a central symmetrical pattern.
8. The single-layer miniaturized dual-band positioning antenna of claim 7 wherein the outline of the first metal patch is a rectangular structure and the four corners of the first metal patch are bent inward at the ends of the dipole structure to form a folded dipole structure.
9. The single-layer miniaturized dual-band positioning antenna of claim 8 wherein the outline of the second metal patch is rectangular and the four corners of the second metal patch are bent inward at the ends of the dipole structure to form a folded dipole structure.
10. The single-layer miniaturized dual-band positioning antenna of claim 9 wherein the second metal patches are recessed into second grooves, the first metal patch of the area enclosed by each of the second grooves having the through-holes thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310905865.1A CN116683173A (en) | 2023-07-21 | 2023-07-21 | Single-layer miniaturized double-frequency positioning antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310905865.1A CN116683173A (en) | 2023-07-21 | 2023-07-21 | Single-layer miniaturized double-frequency positioning antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116683173A true CN116683173A (en) | 2023-09-01 |
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| CN202310905865.1A Pending CN116683173A (en) | 2023-07-21 | 2023-07-21 | Single-layer miniaturized double-frequency positioning antenna |
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