CN115377656A - 4G full-band high-gain omnidirectional antenna - Google Patents
4G full-band high-gain omnidirectional antenna Download PDFInfo
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- CN115377656A CN115377656A CN202211050480.3A CN202211050480A CN115377656A CN 115377656 A CN115377656 A CN 115377656A CN 202211050480 A CN202211050480 A CN 202211050480A CN 115377656 A CN115377656 A CN 115377656A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—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
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
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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
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/44—Resonant antennas with a plurality of divergent straight elements, e.g. V-dipole, X-antenna; with a plurality of elements having mutually inclined substantially straight portions
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
The application discloses a 4G full-band high-gain omnidirectional antenna, which comprises two antenna substrates which are symmetrically arranged, wherein feed points for feeding are respectively arranged at the end parts of the two antenna substrates, and the width of each antenna substrate is increased from the feed points to two sides in an extending manner; two groups of symmetrical gaps are also formed in any antenna substrate, and the gaps on the two antenna substrates are symmetrically arranged; arbitrary group's gap includes first gap, second gap and the third gap of intercommunication each other, second gap and third gap collineation, just second gap and third gap are the enclosed construction on the antenna substrate, first gap perpendicular to the straight line that second gap and third gap constitute, just the one end in first gap extends to antenna substrate's edge and form an opening. According to the technical scheme, full-band high-gain omnidirectional radiation is achieved through one antenna.
Description
Technical Field
The application relates to the technical field of antennas, in particular to a 4G full-band high-gain omnidirectional antenna.
Background
In the field of micro base stations, in some special application scenes, 4G full-band ultra-wideband omnidirectional antennas are increasingly in demand, and a general scheme is to split 4G low frequency and high frequency to realize horizontal omnidirectional radiation of the antennas. However, the existing antenna has a complex structure and a large size, and cannot meet the production requirement.
Disclosure of Invention
The application provides a 4G full-band high-gain omnidirectional antenna, realizes full-band high-gain omnidirectional radiation through an antenna.
The embodiment of the application provides a 4G full-band high-gain omnidirectional antenna, which comprises two antenna substrates which are symmetrically arranged, wherein feed points for feeding are respectively arranged at the end parts of the two antenna substrates, and the width of each antenna substrate is increased from the feed points to two sides in an extending manner;
two groups of symmetrical gaps are also formed in any antenna substrate, and the gaps on the two antenna substrates are symmetrically arranged; any group of gaps comprises a first gap, a second gap and a third gap which are communicated with each other, the second gap and the third gap are collinear, the second gap and the third gap are of a closed structure on the antenna substrate, the first gap is perpendicular to a straight line formed by the second gap and the third gap, and one end of the first gap extends to the edge of the antenna substrate to form an opening.
In some embodiments, the antenna substrate is disposed in a sector configuration.
In some embodiments, the first and second slots have a length and a length that is one quarter of a wavelength corresponding to a resonant frequency of 2500 MHz.
In some embodiments, the lengths of the first and third slots are one quarter of the wavelength corresponding to the resonant frequency of 1800 MHz.
In some embodiments, the sum of the lengths of the second and third slots is one-half of the wavelength corresponding to the 2100MHz resonant frequency.
In some embodiments, the first slot and the second slot in any one of the groups of slots form a first L-shaped slot, and a distance between two first L-shaped slots symmetric to each other on the two antenna substrates is set to be 0.5 to 0.7 times of a wavelength corresponding to a resonant frequency of 2500 MHz.
In some embodiments, the first slot and the third slot in any group of slots form a second L-shaped slot, and a distance between two second L-shaped slots symmetric to each other on the two antenna substrates is set to be 0.5 to 0.7 times of a wavelength corresponding to a resonant frequency of 1800 MHz.
In some embodiments, the antenna substrate is provided as an aluminum plate or an FPC flexible board or a PCB board.
In some embodiments, the thickness of the antenna substrate is set to 0.5 to 5mm.
Compared with the prior art, the beneficial effect of this application is: the scheme of the electric dipole antenna and the slot antenna can realize 4G full-band bandwidth, and the antennas are all horizontally and omnidirectionally radiated in full frequency bands and have good non-roundness. The high-frequency antenna adopts a four-unit slot array, and can realize an omnidirectional high-gain antenna.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of an antenna structure according to the present application;
fig. 2 is a schematic diagram of the resonance of the antenna of the present application;
FIG. 3 is a low frequency plot of the E-plane of the antenna of the present application;
FIG. 4 is a high frequency diagram of the E-plane of the antenna of the present application;
FIG. 5 is a low frequency plot of the H-plane of the antenna of the present application;
FIG. 6 is a high frequency diagram of the H-plane of the antenna of the present application;
FIG. 7 is a schematic diagram of the antenna gain of the present application;
the implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The 4G full-band high-gain omnidirectional antenna provided by this embodiment includes two antenna substrates symmetrically arranged, end portions of the two antenna substrates are respectively provided with a feed point for feeding, and a width of the antenna substrate is increased by extending from the feed point to both sides;
two groups of symmetrical gaps are also formed in any antenna substrate, and the gaps on the two antenna substrates are symmetrically arranged; any group of gaps comprises a first gap, a second gap and a third gap which are communicated with each other, the second gap and the third gap are collinear, the second gap and the third gap are of a closed structure on the antenna substrate, the first gap is perpendicular to a straight line formed by the second gap and the third gap, and one end of the first gap extends to the edge of the antenna substrate to form an opening.
It should be noted that, in this embodiment, the antenna substrate is set to be an aluminum plate, an FPC flexible board, or a PCB, and the thickness of the antenna substrate is set to be 0.5 to 5mm. The antenna adopts a symmetrical aluminum plate antenna and a slot antenna, wherein low-frequency resonance is generated by two symmetrical aluminum plate antennas; the high-frequency resonance is generated by an array antenna composed of four T-shaped slot antennas. Therefore, 4G full-band horizontal omnidirectional radiation can be realized through one antenna, and high gain is realized at high frequency.
It should be noted that the low-frequency electric dipole antenna is composed of an array which gradually widens from the middle to the two ends, so that the low-frequency bandwidth of the antenna can be increased. In a common electric dipole antenna, the characteristic impedance of the antenna at different distances from the feeding position causes partial reflection, so that the bandwidth is limited; if the width or diameter of the element is increased, the speed of the characteristic impedance along with the position change of the feed point is reduced, and then the bandwidth of the antenna is increased; furthermore, if the ratio of the radius of the antenna element to the distance from the feed point remains constant, then the characteristic impedance of the antenna at sections of equal distance from the feed point is equal, the characteristic impedance is constant, and frequency independent, so that the bandwidth of an infinitely long conical antenna is infinite. In this embodiment, the low-frequency antenna adopts the width that gradually increases from the feed point to both ends to make the characteristic impedance on the array change slowly along with the distance to the feed point, the bandwidth is wider, makes planar structure, easily conformal. In this embodiment, the antenna substrate is disposed in a sector structure.
In the embodiment, the medium-high frequency is an array formed by four T-shaped slot antennas, and each T-shaped slot generates 1710-2690MHz resonance. Wherein the path formed by the first slot and the second slot generates a resonance around 2500MHz, the path formed by the first slot and the third slot generates a resonance around 1800MHz, and the path formed by the second slot and the third slot generates a resonance around 2100 MHz.
Specifically, the sum of the lengths of the first slot and the second slot is one quarter of the wavelength corresponding to the resonance frequency 2500 MHz. The length sum of the first gap and the third gap is one quarter of the wavelength corresponding to the resonant frequency of 1800 MHz. The sum of the lengths of the second gap and the third gap is one half of the wavelength corresponding to the resonant frequency of 2100 MHz.
Further, according to the principle of the array antenna, the performance is best when the distance between the two units is 0.65 times of the wavelength. In this embodiment, the first slot and the second slot in any one of the groups of slots form a first L-shaped slot, and a distance between two first L-shaped slots symmetric to each other on the two antenna substrates is set to be 0.5 to 0.7 times of a wavelength corresponding to a resonant frequency of 2500 MHz. The first slot and the third slot in any group of slots form a second L-shaped slot, and the distance between two second L-shaped slots which are symmetrical on the two antenna substrates is set to be 0.5-0.7 times of the wavelength corresponding to the resonant frequency of 1800 MHz. The length from the opening position of the first slot to the low-frequency end is equivalent to the effect of parallel inductance relative to the medium-high frequency, therefore, the opening position of the first slot is selected from the positions shown in the figure, and the impedance of the slot antenna can be easily matched by adding the effect of the equivalent parallel inductance to the input impedance of the opening position.
Further, the length of the third slot is equivalent to the parallel capacitance effect with respect to the slot antenna composed of the first slot and the second slot, and the length of the second slot is equivalent to the parallel inductance effect with respect to the slot antenna composed of the first slot and the third slot. Therefore, the length of the second slot has a large influence on the resonance of the slot antenna composed of the first slot and the third slot, and the third slot has a small influence on the resonance of the slot antenna composed of the first slot and the second slot. Therefore, a slot antenna composed of a first slot and a second slot with high frequency is optimized, and then a third slot with a long slot is added to the slot with high frequency to form a slot antenna composed of a first slot and a third slot with low frequency.
It should be noted that, in a conventional full-band antenna, a high frequency generally adopts a third order mode of low frequency resonance, for example, a 2100MHz resonance is a third order mode of a 700MHz resonance, and then a directional pattern is split into an upper lobe and a lower lobe, so that horizontal plane radiation is deteriorated. Each resonance of the antenna is the fundamental mode of the corresponding array or the slot antenna, so that the antenna has good omni-directionality on the horizontal plane, the antenna has horizontal omni-directional radiation in the full frequency band, a directional diagram has no split lobe, and the omni-directionality is good.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.
Claims (9)
1. A4G full-band high-gain omnidirectional antenna is characterized by comprising two antenna substrates which are symmetrically arranged, wherein feed points for feeding are respectively arranged at the end parts of the two antenna substrates, and the width of each antenna substrate is increased from the feed points to two sides in an extending manner;
two groups of symmetrical gaps are also formed in any antenna substrate, and the gaps on the two antenna substrates are symmetrically arranged; any group of gaps comprises a first gap, a second gap and a third gap which are communicated with each other, the second gap and the third gap are collinear, the second gap and the third gap are of a closed structure on the antenna substrate, the first gap is perpendicular to a straight line formed by the second gap and the third gap, and one end of the first gap extends to the edge of the antenna substrate to form an opening.
2. The 4G full-band high-gain omnidirectional antenna according to claim 1, wherein the antenna substrate is disposed in a sector configuration.
3. The 4G full-band high-gain omni-directional antenna according to claim 1, wherein the sum of the lengths of the first slot and the second slot is one quarter of a wavelength corresponding to a resonant frequency of 2500 MHz.
4. The 4G full-band high-gain omni-directional antenna according to claim 1, wherein the sum of the lengths of the first slot and the third slot is one quarter of the wavelength corresponding to the resonant frequency of 1800 MHz.
5. The 4G full-band high-gain omnidirectional antenna according to claim 1, wherein a sum of lengths of the second slot and the third slot is one-half of a wavelength corresponding to a 2100MHz resonant frequency.
6. The 4G full-band high-gain omnidirectional antenna according to claim 1, wherein the first slot and the second slot in any one of the groups of slots form a first L-shaped slot, and a distance between two first L-shaped slots symmetric to each other on the two antenna substrates is set to be 0.5 to 0.7 times of a wavelength corresponding to a resonant frequency of 2500 MHz.
7. The 4G full-band high-gain omnidirectional antenna according to claim 1, wherein the first slot and the third slot in any one of the groups of slots form a second L-shaped slot, and a distance between two second L-shaped slots symmetric to each other on the two antenna substrates is set to be 0.5 to 0.7 times of a wavelength corresponding to a resonant frequency of 1800 MHz.
8. The 4G full-band high-gain omnidirectional antenna according to claim 1, wherein the antenna substrate is configured as an aluminum plate, an FPC (flexible printed circuit) board or a PCB (printed circuit board).
9. The 4G full-band high-gain omnidirectional antenna according to claim 8, wherein a thickness of the antenna substrate is set to be 0.5-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211050480.3A CN115377656A (en) | 2022-08-29 | 2022-08-29 | 4G full-band high-gain omnidirectional antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211050480.3A CN115377656A (en) | 2022-08-29 | 2022-08-29 | 4G full-band high-gain omnidirectional antenna |
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| CN115377656A true CN115377656A (en) | 2022-11-22 |
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| CN202211050480.3A Pending CN115377656A (en) | 2022-08-29 | 2022-08-29 | 4G full-band high-gain omnidirectional antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116995434A (en) * | 2023-08-22 | 2023-11-03 | 中铁隧道局集团有限公司 | Ultra-wideband antenna of ground penetrating radar |
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2022
- 2022-08-29 CN CN202211050480.3A patent/CN115377656A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116995434A (en) * | 2023-08-22 | 2023-11-03 | 中铁隧道局集团有限公司 | Ultra-wideband antenna of ground penetrating radar |
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