CN115020984A - Ultra-wideband ternary antenna array - Google Patents

Ultra-wideband ternary antenna array Download PDF

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Publication number
CN115020984A
CN115020984A CN202210351724.5A CN202210351724A CN115020984A CN 115020984 A CN115020984 A CN 115020984A CN 202210351724 A CN202210351724 A CN 202210351724A CN 115020984 A CN115020984 A CN 115020984A
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array
metal
antenna
radio frequency
circular
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Inventor
刘丽珍
铁海涛
马琳琳
李冀
陈妍妍
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Henan Lianrui Intelligent Technology Research Institute Co ltd
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Henan Lianrui Intelligent Technology Research Institute Co ltd
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Priority to CN202210351724.5A priority Critical patent/CN115020984A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H01Q5/25—Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/062—Two dimensional planar arrays using dipole aerials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
    • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Waveguide Aerials (AREA)

Abstract

The invention discloses an ultra wide band ternary antenna array, which comprises a dielectric plate and a metal ground, wherein the metal ground is printed on the front surface of the dielectric plate; the array comprises three array elements, each array element comprises a metal array, a microstrip line, a radio frequency connector, a metal array circular gap, a radio frequency connector circular gap, a feed pin connected with the radio frequency connector and a bonding pad; the metal array is positioned above the metal ground, the microstrip line is printed on the reverse side of the dielectric plate, the metal array is welded at one end of the microstrip line through a circular gap of the metal array, and the feed pin penetrates through the circular gap of the radio frequency connector to be connected with the other end of the microstrip line and is welded on the pad; the impedance bandwidth of the array element antenna of the three array elements is more than 1GHz, and the three array elements form a circular array; the metal array is of a monopole structure. The size of the antenna is reduced, the metal array is an antenna radiating body, and a monopole structure is adopted, so that the radiation gain of the antenna is increased, and the omnidirectional radiation of the ternary antenna array can be realized.

Description

Ultra-wideband ternary antenna array
Technical Field
The invention belongs to the technical field of antennas, and particularly relates to an ultra wide band ternary antenna array.
Background
The global four-major satellite navigation system can carry out accurate positioning in outdoor open environment, but basically loses positioning capability in indoor environment shielded by buildings. People are active indoors for about 80% of the time, and therefore, an indoor positioning and navigation service has a wide demand.
UWB (ultra wide band) is an emerging indoor positioning technology in recent years, and the system utilizes ultra wide band pulse signals to transmit information and utilizes good time resolution of the pulse signals to measure TOA, thereby realizing multi-base-station TDOA positioning. Because of the signal characteristics, the UWB indoor positioning system has congenital advantages in multipath resistance, low complexity, time synchronization, and the like, and the indoor positioning accuracy of the UWB indoor positioning system is generally better than 1 m. Generally, TDOA positioning needs at least 4 base stations, and is not suitable for small room and small area positioning, and single base station positioning is more suitable for the environment, so that construction can be reduced, and cost can be reduced.
The antenna array is an indispensable part for positioning a single base station, and the positioning effect is greatly influenced if the antenna array is not designed reasonably.
In chinese patent document CN103247845A, a wide-angle scanning circularly polarized phased array antenna subarray is disclosed, which adopts a right-angle linear array with a microstrip structure, the microstrip antenna is directional radiation, and the microstrip antenna is difficult to realize 500MHz bandwidth, not only is not suitable for top-hung installation, but also cannot realize ultra wide band, and covers 270 ° at maximum when the right-angle linear array measures angles, so that it is not suitable for ultra wide band single base station positioning products.
In chinese patent documents CN107732441A and CN207199831U, it is disclosed that a beam elevation high-gain omnidirectional antenna composed of two linear arrays mainly improves antenna gain, and a multi-array element is connected with a radio frequency cable by using an impedance line and finally constitutes only one antenna, instead of an antenna array, a single antenna cannot complete angle measurement, and the array element antennas are connected by the impedance line, so that it is difficult to make the antenna bandwidth larger than 500 MHz.
In addition, chinese patent document CN109687170A discloses a small three-element multi-faceted quadrifilar helix antenna array, in which three array elements are placed on a metal triangular pyramid, and each quadrifilar helix antenna is connected by using a power division component, and finally, only one radio frequency interface, that is, a single antenna is provided, and the antenna can radiate well in both horizontal and vertical directions, but is not an antenna array, and therefore, cannot be used in angle measurement products, and the bandwidth of the antenna is hardly larger than 500MHz, and cannot be used in ultra-wideband products.
Disclosure of Invention
The invention aims to provide an ultra wide band ternary antenna array which can be suitable for ultra wide band single base station positioning products and has the advantages of omnidirectional radiation, large gain, bandwidth larger than 1GHz and capability of realizing 360-degree angle measurement.
In order to solve the technical problem, the ultra-wideband ternary antenna array comprises a dielectric plate and a metal ground, wherein the metal ground is printed on the front surface of the dielectric plate; the array comprises three array elements, wherein each array element comprises a metal array, a microstrip line, a radio frequency connector, a metal array circular gap, a radio frequency connector circular gap, a feed pin connected with the radio frequency connector and a bonding pad; the metal array is positioned above the metal ground, the microstrip line is printed on the reverse side of the dielectric plate, the metal array is welded at one end of the microstrip line through a circular gap of the metal array, and the feed pin penetrates through the circular gap of the radio frequency connector to be connected with the other end of the microstrip line and is welded on the pad; the impedance bandwidth of the array element antenna of the three array elements is more than 1GHz, and the three array elements form a circular array; the metal array is of a monopole structure.
Three array elements are adopted to form a circular array, metal arrays in the three array elements are positioned on the same metal ground, and a ternary antenna array can be formed without increasing the size of the antenna, so that the size of the antenna is reduced, and the antenna is more favorable for being built in the antenna array, and the size of a product is reduced; the metal array is an antenna radiator, and adopts a monopole structure, so that not only is the antenna radiation gain increased, but also the omnidirectional radiation of the ternary antenna array can be realized, and therefore, when the metal array is used in an ultra-wideband single-base-station positioning product, the positioning precision can be improved, and the influence on the positioning effect when the terminal equipment is in different postures is reduced; the ultra-wideband ternary antenna array in the technical scheme has the advantages of omnidirectional radiation, large gain, small size, low height and the like; not only can omnidirectional radiation be realized, the impedance bandwidth is more than 1GHz, but also 360 degrees can be covered during angle measurement (the positioning can be only 180 degrees under the influence of the radiation of the directional antenna); and a monopole structure is adopted, and the device can be hung on the top.
Preferably, the metal matrix consists of a cylinder I, a cylinder II and a cylinder III; the second cylinder and the third cylinder are of two-section stepped cylindrical structures, so that the metal matrix is inserted into the dielectric slab; the first cylinder is of a hollow structure.
When the metal array adopts the cylindrical structural design of two sections ladders to make the metal array insert the dielectric plate, need not insulating medium just can realize the stair structure to realize the ultra wide band. The design can not only meet the bandwidth requirement of the ultra-wideband, but also reduce the processing cost and simplify the composition process; the first cylinder is designed to be a hollow structure, so that the material cost is saved, the weight of the metal array can be reduced, the metal array can fall off due to the fact that the metal array is heavy in actual use, the processing cost can be reduced, and the forming process is simplified.
Preferably, the three array elements comprise three metal arrays, namely a metal array I, a metal array II and a metal array III; the first metal array, the second metal array and the third metal array are uniformly distributed on the circumference at intervals by taking the geometric center of the dielectric slab as the circle center and are positioned above the dielectric slab.
The metal arrays are evenly distributed on the circumference at intervals, the outward radiation is even, and the signals are more stable.
Preferably, the three array elements are provided with three microstrip lines, namely a first microstrip line, a second microstrip line and a third microstrip line; three array elements are respectively provided with three microstrip lines without mutual interference.
Preferably, the three array elements are provided with three radio frequency connectors, namely a radio frequency connector I, a radio frequency connector II and a radio frequency connector III;
the radio frequency connectors I, the radio frequency connectors II and the radio frequency connectors III are uniformly distributed on the circumference at intervals by taking the geometric center of the dielectric slab as a circle center and are positioned below the dielectric slab.
The radio frequency connectors are evenly distributed on the circumference at intervals, and signals are more stable.
Preferably, the three array elements are provided with three metal array circular gaps, namely a metal array circular gap I, a metal array circular gap II and a metal array circular gap III.
Preferably, the three array elements are provided with three radio frequency joint circular gaps, namely a radio frequency joint circular gap I, a radio frequency joint circular gap II and a radio frequency joint circular gap III.
Preferably, the three array elements have three feeding pins, which are a feeding pin I, a feeding pin II and a feeding pin III.
Preferably, the metal array and the radio frequency connector are spaced, and the metal array and the radio frequency connector are located on the same circumference; the metal array circular gap and the frequency joint circular gap are circular gaps formed in the metal ground.
The metal array is spaced from the radio frequency connector, so that signal interference is avoided; the metal array and the radio frequency joint are positioned on the same circumference, so that the ultra-wideband ternary antenna array obtains maximum gain at different frequency points.
Preferably, the radio frequency connector adopts a direct-insertion MCX female seat radio frequency connector, and the ground of the radio frequency connector is welded on the metal ground; the medium plate is made of FR4 plate, and the plate thickness is 1.2 mm.
Preferably, the height of the metal matrix is L, and the maximum diameter of the metal matrix is R; the diameter of the metal ground is R g Satisfy L ═ 0.24 x lambda 0 ，R＝(0.047～0.067)*λ 0 ，R g ＝1.7*λ 0 Wherein λ is 0 Is the free space wavelength.
Preferably, the impedance bandwidth of the array element antenna of the three array elements is 3.1GHz-5.1 GHz.
Compared with the prior art, the ultra-wideband ternary antenna array can meet the requirement of omnidirectional radiation without increasing the size of an antenna base plate when the ternary antenna array is formed, thereby being convenient to embed and reducing the size of a product.
Drawings
The following further detailed description of embodiments of the invention is made with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of a metal array structure in an ultra-wideband ternary antenna array of the present invention;
figure 2 is a schematic diagram of a unit antenna structure applied to the ultra-wideband ternary antenna array of the present invention;
FIG. 3 is a side view schematic of the structure of FIG. 2;
figure 4 is a schematic diagram of the ultra-wideband ternary antenna array of the present invention;
FIG. 5 is a schematic top view of the structure of FIG. 4;
figure 6 is a ternary antenna array S parameter for the ultra-wideband ternary antenna array of the present invention;
FIG. 7 is an E-plane directional diagram of a ternary antenna array at 4GHz for an ultra-wideband ternary antenna array application of the present invention;
fig. 8 is an H-plane directional diagram of a ternary antenna array applied to the ultra-wideband ternary antenna array of the present invention at 4GHz when Theta is 60 °;
wherein: 1-metal array, 100-cylinder one, 101-cylinder two, 102-cylinder three, 103-metal array one, 104-metal array two, 105-metal array three; 2-microstrip line, 201-microstrip line one, 202-microstrip line two, 203-microstrip line three; 3-metal ground; 4-a dielectric plate; 5-radio frequency connector, 500-radio frequency connector medium, 501-radio frequency connector ground, 502-radio frequency connector I, 503-radio frequency connector II and 504-radio frequency connector III; 6-a metal array circular gap 601-a metal array circular gap I, 602-a metal array circular gap II and 603-a metal array circular gap III; 7-a radio frequency connector circular gap, 701-a radio frequency connector circular gap I, 702-a radio frequency connector circular gap II and 703-a radio frequency connector circular gap III; 8-feeding needle, 801-feeding needle I, 802-feeding needle II and 803-feeding needle III; 9-pad, 901-pad one, 902-pad two, 903-pad three.
Detailed Description
The invention relates to an ultra-wideband ternary antenna array, which comprises a dielectric plate 4 and a metal ground 3, wherein the metal ground 3 is printed on the front surface of the dielectric plate 4, and the ultra-wideband ternary antenna array also comprises three array elements, each array element comprises a metal array 1, a microstrip line 2, a radio frequency connector 5, a metal array circular gap 6, a radio frequency connector circular gap 7, a feed pin 8 (the feed pin 8 can be understood as a part of the radio frequency connector 5, the feed pin 8 is an inner conductor of the radio frequency connector 5, the radio frequency connector medium 500 is a radio frequency connector 5 medium, the radio frequency connector ground 501 is a radio frequency connector 5 ground pin, and the radio frequency connector ground 501 is welded on the metal ground 3) and a welding pad 9; the metal array 1 is located above the metal ground 3, the microstrip line 2 is printed on the reverse side of the dielectric plate 4, the metal array 1 is welded at one end of the microstrip line 2 through the metal array circular slot 6, the feed pin 8 penetrates through the radio frequency connector circular slot 7 to be connected with the other end of the microstrip line 2 and is welded on the pad 9, and the structure of an array element (unit antenna) is shown in fig. 2-3; the impedance bandwidth of the array element antenna of the three array elements is larger than 1GHz, and the three array elements form a circular array, as shown in figures 4-5.
As shown in fig. 1, the metal matrix 1 is composed of a first cylinder 100, a second cylinder 101 and a third cylinder 102; the second cylinder 101 and the third cylinder 102 are of two-section stepped cylindrical structures, so that the metal array 1 is inserted into the dielectric plate 4; the first cylinder 100 is a hollow structure, and in this embodiment, the metal matrix 1 is made of brass.
The ultra-wideband ternary antenna array of the embodiment has three array elements, namely three metal arrays, namely a metal array I103, a metal array II 104 and a metal array III 105; the first metal array 103, the second metal array 104 and the third metal array 105 are uniformly distributed on the circumference at intervals by taking the geometric center of the dielectric slab 4 as the center of a circle, and are positioned above the dielectric slab 4; the three array elements are provided with three microstrip lines, the characteristic impedance of the microstrip lines is 50 omega, and the three microstrip lines are a microstrip line I201, a microstrip line II 202 and a microstrip line III 203 respectively; the three array elements are provided with three radio frequency connectors, namely a radio frequency connector I502, a radio frequency connector II 503 and a radio frequency connector III 504;
the first radio frequency connector 502, the second radio frequency connector 503 and the third radio frequency connector 504 are uniformly distributed on the circumference at intervals by taking the geometric center of the dielectric plate 4 as a circle center, and are positioned below the dielectric plate 4;
the three array elements are provided with three metal array circular gaps which are respectively a metal array circular gap I601, a metal array circular gap II 602 and a metal array circular gap III 603;
the three array elements are provided with three radio frequency joint circular gaps, namely a radio frequency joint circular gap I701, a radio frequency joint circular gap II 702 and a radio frequency joint circular gap III 703.
The three array elements are provided with three feed pins, namely a feed pin I801, a feed pin II 802 and a feed pin III 803;
a first metal array 103 penetrates through the first metal array circular slot 601 to be welded with one end of the first microstrip line 201, and a first feed pin 801 penetrates through the first radio frequency connector circular slot 701 to be connected with the other end of the first microstrip line 201; the second metal array 104 penetrates through the second metal array circular slot 602 to be welded with one end of the second microstrip line 202, and the second feed pin 802 penetrates through the second radio frequency connector circular slot 702 to be connected with the other end of the second microstrip line 202; a third metal array 105 penetrates through a third circular gap 603 of the metal array to be welded with one end of the third microstrip line 203, and a third feed pin 803 penetrates through a third circular gap 703 of the radio frequency connector to be connected with the other end of the third microstrip line 203; the first metal array circular gap 601, the second metal array circular gap 602, the third metal array circular gap 603, the first radio frequency connector circular gap 701, the second radio frequency connector circular gap 702 and the third radio frequency connector circular gap 703 are circular gaps formed in the metal ground 3.
The metal array 1 and the radio frequency joint 5 in each array element have a distance, and the metal array 1 and the radio frequency joint 5 are positioned on the same circumference; the metal matrix circular gap 6 and the radio frequency connector circular gap 7 are circular gaps formed in the metal ground 3.
The radio frequency connector 5 adopts a direct-insertion MCX female seat radio frequency connector, and the grounding of the radio frequency connector (namely, the radio frequency connector grounding 501) is welded on the metal ground 3; the medium plate is made of FR4 plate, and the plate thickness is 1.2 mm.
The key parameters of the ultra-wideband antenna are mainly determined by preliminary calculation of free space wavelength corresponding to a low-frequency point of antenna work:
Figure RE-GDA0003747809180000051
c is the propagation velocity of electromagnetic waves in vacuum, f 0 Is the operating frequency; the height of the metal array is L, and the maximum diameter of the metal array is R; the diameter of the metal ground is R g Satisfy L ═ 0.24 x lambda 0 ， R＝(0.047～0.067)*λ 0 ，R g ＝1.7*λ 0 Wherein λ is 0 Is the free space wavelength.
The impedance bandwidth of the array element antenna of the three array elements is 3.1GHz-5.1 GHz.
The ultra-wideband ternary antenna array of the embodiment of the invention has the center frequency of 4GHz and the impedance bandwidth of 1 GHz; the antenna array is modeled, simulated and optimized by HFSS13.0 software, and the final size parameters are shown in the following tables 1 and 2:
TABLE 1 Metal array size parameters
Figure RE-GDA0003747809180000061
TABLE 2 dielectric plate dimensional parameters
Figure RE-GDA0003747809180000062
Fig. 6 shows the ultra-wideband ternary antenna array S parameters of this embodiment, because of the symmetry and reciprocity of the antenna, the port 1 reflection parameter S11 is the same as the port 2 reflection parameter S22, and the isolation degrees S12 and S21 between the port 1 and the port 2 are the same, it can also be seen that the antenna array port reflections S11 and S22 are both less than-10 dB at 3.1GHz-5.1GHz, and the antenna array port isolation degrees S12 and S21 are less than-12 dB.
Fig. 7 is an E-plane directional diagram of an ultra-wideband ternary antenna array at 4GHz, and it is seen from the diagram that the directional diagrams are not consistent when Phi is 0 ° and Phi is 90 °, which is caused by a circular array formed by three array elements with 120 ° phase difference.
Fig. 8 is an H-plane directional diagram of the ultra-wideband ternary antenna array at 4GHz when Theta is 60 °, and it can be seen from the diagram that the gain of the H-plane directional diagram is maximum when Phi is 30 °, 150 °, or-90 °, so that the radiation directional diagram meets the requirement of ultra-wideband single-base-station angle measurement.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (12)

1. An ultra-wideband ternary antenna array comprises a dielectric plate and a metal ground, wherein the metal ground is printed on the front surface of the dielectric plate, and the ultra-wideband ternary antenna array is characterized by further comprising three array elements, wherein each array element comprises a metal array, a microstrip line, a radio frequency connector, a metal array circular gap, a radio frequency connector circular gap, a feed pin connected with the radio frequency connector and a bonding pad; the metal array is positioned above the metal ground, the microstrip line is printed on the reverse side of the dielectric slab, the metal array is welded at one end of the microstrip line through a circular gap of the metal array, and the feed pin penetrates through the circular gap of the radio frequency connector to be connected with the other end of the microstrip line and is welded on the pad; the impedance bandwidth of the array element antenna of the three array elements is larger than 1GHz, and the three array elements form a circular array.
2. The UWB ternary antenna array of claim 1 wherein the metal matrix is comprised of cylinder one, cylinder two, and cylinder three; the second cylinder and the third cylinder are of two-section stepped cylindrical structures, so that the metal matrix is inserted into the dielectric slab; the first cylinder is of a hollow structure.
3. The array antenna of claim 2 wherein the three elements have three metal elements, namely a first metal element, a second metal element and a third metal element; the first metal array, the second metal array and the third metal array are uniformly distributed on the circumference at intervals by taking the geometric center of the dielectric slab as the circle center and are positioned above the dielectric slab.
4. The array of claim 3 wherein the three array elements have three microstrip lines, namely microstrip line one, microstrip line two and microstrip line three.
5. The UWB ternary antenna array of claim 4 wherein the three array elements have three RF taps, one RF tap, two RF taps, and three RF taps;
the radio frequency connectors I, the radio frequency connectors II and the radio frequency connectors III are uniformly distributed on the circumference at intervals by taking the geometric center of the dielectric slab as a circle center and are positioned below the dielectric slab.
6. The array of claim 5 wherein the three array elements have three metal array circular slots, namely metal array circular slot one, metal array circular slot two and metal array circular slot three.
7. The array antenna of claim 6 wherein the three elements have three RF connector circular slots, namely RF connector circular slot one, RF connector circular slot two and RF connector circular slot three.
8. The UWB ternary antenna array of claim 7 wherein the three array elements have three feed pins, respectively feed pin one, feed pin two, and feed pin three.
9. The array of claim 8, wherein the metallic array and the rf connector are spaced apart and are located on the same circumference; the metal array circular gap and the frequency joint circular gap are circular gaps formed in the metal ground.
10. The UWB ternary antenna array of claim 1 wherein the RF connector is a direct-insert MCX female RF connector, and the ground of the RF connector is welded to the metal ground; the medium plate is made of FR4 plate, and the plate thickness is 1.2 mm.
11. The UWB ternary antenna array of claim 1 wherein the metallic array has a height L and a maximum diameter R; the diameter of the metal ground is R g Satisfy L ═ 0.24 x λ 0 ，R＝(0.047～0.067)*λ 0 ，R g ＝1.7*λ 0 Wherein λ is 0 Is the free space wavelength.
12. The array antenna of claim 1 wherein the impedance bandwidth of the three element antenna is 3.1GHz-5.1 GHz.
CN202210351724.5A 2022-04-02 2022-04-02 Ultra-wideband ternary antenna array Pending CN115020984A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116632525A (en) * 2023-07-20 2023-08-22 深圳华云时空技术有限公司 Broadband double-frequency circularly polarized omnidirectional antenna applied to ranging and angle measurement scenes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116632525A (en) * 2023-07-20 2023-08-22 深圳华云时空技术有限公司 Broadband double-frequency circularly polarized omnidirectional antenna applied to ranging and angle measurement scenes
CN116632525B (en) * 2023-07-20 2023-09-15 深圳华云时空技术有限公司 Broadband double-frequency circularly polarized omnidirectional antenna applied to ranging and angle measurement scenes

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