Three-dimensional coupling triple-band antenna for wireless network communication and communication system

Abstract

The invention discloses a three-dimensional coupling triple-band antenna for wireless network communication and a communication system, and belongs to the field of communication antennas. According to the antenna, a monopole main radiation unit, a first auxiliary oscillator unit, a second auxiliary oscillator unit, a first resonant structure, a second resonant structure, a third resonant structure and a feed port are respectively arranged on a metal base, and a shell which is buckled on the metal base and is used for protecting each component is arranged. The three-frequency antenna combines the monopole frequency doubling effect, the space electromagnetic coupling and the auxiliary oscillator resonance technology, realizes broadband work on three different frequency bands, and effectively improves the spectrum utilization rate and the communication performance of wireless communication equipment. And meanwhile, the vertically arranged metal rod structure oscillators are ingeniously adopted as the monopole main radiation unit to adjust the frequency doubling resonant frequency and reduce the height of the antenna at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of antennas for wireless communications, and in particular to a three-dimensional coupled tri-band antenna suitable for network communications such as mobile communications, private network communications and wireless local area networks. Background Art

[0002] With the development of wireless communication technology, the demand for multi-band operation is growing. Existing tri-band antenna designs have challenges in achieving wide bandwidth, low profile and compact structure. Therefore, how to provide a new tri-band antenna to meet the needs of modern communication systems for multi-band broadband operation is a problem that needs to be solved.

[0003] In view of this, the present invention is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a three-dimensional coupled tri-band antenna and system for wireless network communication, which can meet the needs of modern communication systems for multi-band broadband operation and thus solve the above-mentioned technical problems existing in the prior art.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A three-dimensional coupled tri-band antenna for wireless network communication, comprising:

[0007] A monopole main radiation unit, a first auxiliary oscillator unit, a second auxiliary oscillator unit, a first resonant structure, a second resonant structure, a third resonant structure, a metal base, a housing and a feeding port; wherein,

[0008] The monopole main radiation unit, the bottom of which is arranged on the metal base through a first resonant structure, can generate a radiation signal in the base frequency band and a specified double frequency radiation signal;

[0009] The first secondary oscillator unit, the bottom of which is arranged on the metal base through a second resonant structure, is located on the side of the monopole main radiating unit, and can enhance the radiation signal of the first high-order harmonic frequency band and expand the resonance bandwidth through spatial electromagnetic coupling with the monopole main radiating unit;

[0010] The second sub-diode unit, whose bottom is arranged on the metal base through a third resonant structure, is located in front of the monopole main radiating unit, and can enhance the radiation signal of the second high-order harmonic frequency band and expand the resonance bandwidth through spatial electromagnetic coupling with the monopole main radiating unit;

[0011] The feeding port is arranged on the metal base, and is electrically connected to the monopole main radiation unit, the first auxiliary dipole unit and the second auxiliary dipole unit respectively, and can be connected to an external communication cable;

[0012] The shell is buckled and protected outside the components on the metal base.

[0013] A communication system comprises: a communication host and the antenna described in the present invention, wherein the communication host is electrically connected to the antenna.

[0014] Compared with the prior art, the three-dimensional coupled tri-band antenna and system for wireless network communication provided by the present invention have the following beneficial effects:

[0015] By arranging the monopole main radiation unit, the first sub-diopter unit and the second sub-diopter unit on the metal base, and arranging the first resonant structure, the second resonant structure and the third resonant structure at the bottom of the monopole main radiation unit, the first sub-diopter unit and the second sub-diopter unit, respectively, broadband operation in three different frequency bands is realized through the monopole frequency doubling effect, spatial electromagnetic coupling and sub-diopter resonance technology. The three-band antenna has the advantages of compact structure, wide bandwidth and low profile, and is suitable for a variety of wireless communication systems and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the internal structure of a three-dimensional coupled tri-band antenna for wireless network communication provided by an embodiment of the present invention.

[0018] Figure 2 A schematic diagram of the external structure of a three-dimensional coupled tri-band antenna for wireless network communication provided by an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the front internal structure of a three-dimensional coupled tri-band antenna for wireless network communication provided by an embodiment of the present invention.

[0020] Figure 4 A schematic diagram of the internal structure of a three-dimensional coupled tri-band antenna for wireless network communication provided by an embodiment of the present invention.

[0021] Figure 5 A schematic diagram of measuring the port reflection coefficient of a triple-band antenna provided in an embodiment of the present invention.

[0022] The marks in the figure are: 1-monopole main radiation unit; 2-first auxiliary oscillator unit; 3-second auxiliary oscillator unit; 4-first resonant structure; 5-second resonant structure; 6-third resonant structure; 7-dielectric block; 8-; 9-housing; 10-feeding port; 11-first tuning branch; 12-second tuning branch. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in combination with the specific content of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments, which does not constitute a limitation of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.

[0024] First, the terms that may be used in this article are explained as follows:

[0025] The term “and / or” means that either or both of them can be realized at the same time. For example, X and / or Y means both “X” or “Y” and “X and Y”.

[0026] The terms "include", "comprises", "contains", "has" or other descriptions with similar semantics should be interpreted as non-exclusive inclusion. For example, including certain technical feature elements (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, procedures, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products or products, etc.) should be interpreted as including not only certain technical feature elements explicitly listed, but also other technical feature elements known in the art that are not explicitly listed.

[0027] The term "consisting of..." means excluding any technical feature elements not explicitly listed. If this term is used in a claim, it will make the claim closed, so that it does not contain technical feature elements other than the technical feature elements explicitly listed, except for the conventional impurities related to them. If this term only appears in a clause of a claim, it only limits the elements explicitly listed in the clause, and the elements recorded in other clauses are not excluded from the overall claim.

[0028] Unless otherwise specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0029] When concentration, temperature, pressure, size or other parameters are expressed in the form of a numerical range, the numerical range should be understood to specifically disclose all ranges formed by the pairing of any upper limit, lower limit, and preferred value in the numerical range, regardless of whether the range is explicitly stated; for example, if a numerical range of "2 to 8" is stated, the numerical range should be interpreted as including ranges such as "2 to 7", "2 to 6", "5 to 7", "3 to 4 and 6 to 7", "3 to 5 and 7", "2 and 5 to 7", etc. Unless otherwise specified, the numerical ranges stated herein include both their end values ​​and all integers and fractions within the numerical range.

[0030] The orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings and are only for the convenience and simplification of description, and do not explicitly or implicitly indicate that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation of this document.

[0031] The scheme provided by the present invention is described in detail below. The contents not described in detail in the embodiments of the present invention belong to the prior art known to professionals in the field. If the specific conditions are not specified in the embodiments of the present invention, they are carried out according to the conventional conditions in the field or the conditions recommended by the manufacturer. If the manufacturers are not specified in the reagents or instruments used in the embodiments of the present invention, they are all conventional products that can be purchased commercially.

[0032] like Figures 1 to 4 As shown, an embodiment of the present invention provides a three-dimensional coupled tri-band antenna for wireless network communication, comprising:

[0033] A monopole main radiation unit 1, a first sub-diopter unit 2, a second sub-diopter unit 3, a first resonant structure 4, a second resonant structure 5, a third resonant structure 6, a metal base 8, a housing 9 and a feeding port 10; wherein,

[0034] The monopole main radiation unit 1, the bottom of which is arranged on the metal base 8 through the first resonant structure 4, can generate a radiation signal in the base frequency band and a specified double frequency radiation signal;

[0035] The first secondary oscillator unit 2, the bottom of which is arranged on the metal base 8 through the second resonant structure 5, is located on the side of the monopole main radiating unit 1, and can enhance the radiation signal of the first high-order harmonic frequency band and expand the resonance bandwidth through spatial electromagnetic coupling with the monopole main radiating unit 1;

[0036] The second secondary oscillator unit 3, the bottom of which is arranged on the metal base 8 through the third resonant structure 6, is located in front of the monopole main radiating unit 1, and can enhance the radiation signal of the second high-order harmonic frequency band and expand the resonance bandwidth through spatial electromagnetic coupling with the monopole main radiating unit 1;

[0037] The feeding port 10 is arranged on the metal base 8, and is electrically connected to the monopole main radiating unit 1, the first auxiliary oscillator unit 2 and the second auxiliary oscillator unit 3 respectively, and can be connected to an external communication cable;

[0038] The housing 9 is buckled and protected outside the components on the metal base 8 .

[0039] Preferably, in the above-mentioned triple-band antenna, the monopole main radiation unit 1 adopts a vertically arranged metal rod structure oscillator.

[0040] Preferably, in the above-mentioned triple-band antenna, the first secondary oscillator unit 2 adopts a microstrip resonator structure oscillator.

[0041] Preferably, in the above triple-band antenna, the second secondary oscillator unit 3 adopts a coupled resonant structure oscillator.

[0042] Preferably, in the above-mentioned triple-band antenna, the second secondary dipole unit 3 is spaced apart from the monopole main radiating unit 1, and is spatially electromagnetically coupled with the monopole main radiating unit 1 in a slot coupling manner.

[0043] Preferably, in the above-mentioned three-band antenna, the first resonant structure 4, the second resonant structure 5 and the third resonant structure 6 are all composed of a metal block parallel to the metal base 8 and a grounding column supported under the metal block and connected to the metal base 8. Each resonant structure can correspondingly adjust the resonant frequency of the supported antenna in three frequency bands.

[0044] Preferably, the above-mentioned three-band antenna further comprises: a dielectric block 7, arranged at the lower part of the monopole main radiation unit (1);

[0045] A first tuning branch 11 is arranged on the top of the first auxiliary oscillator unit 2;

[0046] The second tuning branch 12 is arranged at the bottom of the second auxiliary oscillator unit 3 .

[0047] The dielectric block 7, the first tuning branch 11 and the second tuning branch 12 constitute an optimized bandwidth extension structure of the antenna, which can further extend the antenna bandwidth.

[0048] An embodiment of the present invention further provides a communication system, comprising: a communication host and the above-mentioned antenna, wherein the communication host is electrically connected to the antenna.

[0049] In summary, the three-band antenna of the embodiment of the present invention realizes broadband operation in three different frequency bands by respectively arranging a monopole main radiation unit, a first sub-diopter unit, and a second sub-diopter unit on a metal base, and respectively arranging a first resonant structure, a second resonant structure, and a third resonant structure at the bottom of the monopole main radiation unit, the first sub-diopter unit, and the second sub-diopter unit, through the monopole frequency doubling effect, spatial electromagnetic coupling, and sub-diopter resonance technology. The three-band antenna has the advantages of compact structure, wide bandwidth, and low profile, and is suitable for a variety of wireless communication systems and has broad application prospects.

[0050] In order to more clearly demonstrate the technical solution and technical effects provided by the present invention, the solution provided by the embodiment of the present invention is described in detail with specific embodiments below.

[0051] Example 1

[0052] like Figures 1 to 4 As shown, an embodiment of the present invention provides a three-dimensional coupled tri-band antenna for wireless network communication, comprising: a metal base 8, a shell 9, a feeding port 10, a monopole main radiating unit 1, a first sub-diopter unit 2, a second sub-diopter unit 3, and three resonant structures 4, 5, and 6; wherein the monopole main radiating unit 1 adopts a vertically arranged metal rod structure antenna, and the bottom is installed on the metal base 8 through the first resonant structure 4, and the first resonant structure 4 is composed of a metal block parallel to the metal base 8 and a grounding column supported under the metal block and connected to the metal base 8, which can adjust the resonant frequency of the monopole main radiating unit 1 in three frequency bands.

[0053] The first secondary oscillator unit 2 adopts a microstrip resonator structure antenna, the bottom of which is mounted on a metal base 8 through a second resonant structure 5, and is located on the side of the monopole main radiating unit 1. It is coupled with the monopole main radiating unit 1 through spatial electromagnetic coupling to enhance the radiation signal of the first high-order harmonic frequency band, and at the same time, the resonance bandwidth is expanded by utilizing the spatial electromagnetic coupling effect;

[0054] The second sub-diopter unit 3 is installed on the metal base 8 through the third resonant structure 6 at the bottom, and is located in front of the monopole main radiating unit 1. It is coupled with the monopole main radiating unit 1 through spatial electromagnetic coupling to enhance the radiation signal of the second high-order harmonic frequency band, and at the same time, expand the resonance bandwidth by using the spatial electromagnetic coupling effect; specifically, the second sub-diopter unit 3 adopts slot coupling to perform spatial electromagnetic coupling with the monopole main radiating unit 1.

[0055] The feeding port 10 is mounted on the metal base 8 , and is electrically connected to the monopole main radiation unit 1 , the first auxiliary dipole unit 2 , and the second auxiliary dipole unit 3 , respectively, and can be connected to an external communication cable.

[0056] Example 2

[0057] On the basis of Example 1, an optimized bandwidth extension structure is provided to further extend the antenna bandwidth. Specifically, a dielectric block 7 is provided at the lower part of the monopole main radiation unit 1, a first tuning branch 11 is provided at the top front end of the first auxiliary dipole unit 2, and a second tuning branch 12 is provided at the bottom of the second auxiliary dipole unit 3, so as to increase the impedance matching of the antenna in three frequency bands.

[0058] Figure 5 The schematic diagram of the port reflection coefficient measurement of the triple-band antenna is shown. It can be seen from the figure that the antenna works well at the fundamental frequency and its multiple frequency resonance, and the port reflection is less than 10dB.

[0059] The three-dimensional coupled tri-band antenna of the present invention realizes broadband operation in three different frequency bands through the monopole frequency doubling effect, spatial electromagnetic coupling and sub-oscillator resonance technology. The antenna has the advantages of compact structure, multi-band, low profile, etc., is suitable for a variety of wireless communication systems, and has broad application prospects.

[0060] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims. The information disclosed in the background technology section of this article is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or in any form that the information constitutes prior art known to those skilled in the art.

Claims

1. A three-dimensional coupled tri-band antenna for wireless network communication, characterized in that: include: A monopole main radiation unit (1), a first sub-diopter unit (2), a second sub-diopter unit (3), a first resonant structure (4), a second resonant structure (5), a third resonant structure (6), a metal base (8), a housing (9) and a feeding port (10); wherein: The monopole main radiation unit (1) has its bottom arranged on the metal base (8) via a first resonant structure (4), and is capable of generating a radiation signal in a base frequency band and a designated frequency-doubled radiation signal; The first secondary oscillator unit (2) is arranged on the metal base (8) at its bottom through a second resonant structure (5), and is located on the side of the monopole main radiating unit (1), and can enhance the radiation signal of the first high-order harmonic frequency band and expand the resonance bandwidth through spatial electromagnetic coupling with the monopole main radiating unit (1); The second secondary oscillator unit (3) has a bottom portion arranged on the metal base (8) via a third resonant structure (6) and is located in front of the monopole main radiating unit (1), and can enhance the radiation signal of the second high-order harmonic frequency band and expand the resonance bandwidth via spatial electromagnetic coupling with the monopole main radiating unit (1); The feeding port (10) is arranged on the metal base (8), and is electrically connected to the monopole main radiation unit (1), the first auxiliary oscillator unit (2) and the second auxiliary oscillator unit (3) respectively, and can be connected to an external communication cable; The outer shell (9) is buckled and protected outside the components on the metal base (8).

2. The three-dimensional coupled tri-band antenna for wireless network communication according to claim 1, characterized in that: The monopole main radiation unit (1) adopts a vertically arranged metal rod structure oscillator.

3. The three-dimensional coupled tri-band antenna for wireless network communication according to claim 1, characterized in that: The first auxiliary oscillator unit (2) adopts a microstrip resonator structure oscillator.

4. The three-dimensional coupled tri-band antenna for wireless network communication according to any one of claims 1 to 3, characterized in that: The second sub-oscillator unit (3) adopts a coupled resonant oscillator.

5. The three-dimensional coupled tri-band antenna for wireless network communication according to claim 4, characterized in that: The second secondary oscillator unit (3) is spaced apart from the monopole main radiating unit (1) and is spatially electromagnetically coupled with the monopole main radiating unit (1) in a slot coupling manner.

6. The three-dimensional coupled tri-band antenna for wireless network communication according to any one of claims 1 to 3, characterized in that: The first resonant structure (4), the second resonant structure (5) and the third resonant structure (6) are all composed of a metal block parallel to the metal base (8) and a grounding column supported under the metal block and connected to the metal base (8).

7. The three-dimensional coupled tri-band antenna for wireless network communication according to any one of claims 1 to 3, characterized in that: Also includes: A dielectric block (7) is arranged at the bottom of the monopole main radiation unit (1); A first tuning branch (11) is arranged on the top of the first auxiliary oscillator unit (2); The second tuning branch (12) is arranged at the bottom of the second auxiliary oscillator unit (3).

8. A communication system, characterized in that: include: A communication host and the antenna according to any one of claims 1 to 7, wherein the communication host is electrically connected to the antenna.

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