A novel co-conical co-coupled low-cost dual-polarization antenna

Abstract

The present invention proposes a novel co-cone co-coupling low-cost dual-polarization antenna, which is a dual-polarization omnidirectional ceiling antenna and has a symmetrical structure; two identical metal flying vibrators are used as radiating vibrators (2, 4) and are respectively fixed on the upper platform of the lower cone disk (5) to form a dual-polarization radiating unit; except for the grounding feet, the edges of the radiating vibrators maintain a staggered ground clearance with the lower cone disk; a metal coupling layer (7) is provided at the coupling spacing distance above the dual-polarization radiating unit to form the co-coupling of the radiating vibrators; by adjusting the size and shape of the radiating vibrators and the height clearance from the ground, the size of the slots on the radiating vibrators, and the shape and size of the metal coupling layer; and the spacing distance between the radiating vibrators, the circuit parameters and radiation parameters of the antenna are controlled within the technical requirements. Compared with the existing dual-polarization omnidirectional ceiling antenna, the co-cone co-coupling design is introduced to achieve ultra-wideband (698-3700MHz).

Description

Technical Field

[0001] The present invention belongs to the field of wireless communication technology, and in particular to a novel co-conical co-coupled low-cost dual-polarization antenna, specifically a dual-polarization omnidirectional ceiling antenna for achieving indoor signal coverage, which is mainly used in 2G / 3G / 4G / 5G / WLAN mobile communication systems. Background Art

[0002] According to the analysis data of the 5G industry, 70% of new businesses occur in indoor scenarios, and high-value customers spend 80% of their working time in indoor environments, so indoor coverage is the focus of operators. Typical indoor distribution scenarios include office buildings, shopping malls, hotels, hospitals, etc. Generally, there are many intervals and large obstructions inside buildings, and the deep coverage requirements are mainly solved by indoor antenna distribution systems. According to the analysis of the complaint areas of the existing network, the complaint areas are mostly concentrated in the signal coverage of residential areas in indoor scenarios. Therefore, a 5G coverage solution customized for residential scenarios is imminent.

[0003] Currently, 5G indoor signal coverage still faces many challenges:

[0004] First, the deployment frequency band is higher. For example, China Mobile's 2515-2615MHz is used to deploy 5G networks, and 2615-2675MHz will be used to deploy 4G networks; China Telecom's 3400MHz-3500MHz is used for 5G construction; China Unicom's 3500MHz-3600MHz is used for 5G construction; China Radio and Television's world's first 5G low-frequency band 700MHz is used for 5G construction, and the on-line passive indoor antenna is required to support multi-network integration and multi-channel characteristics.

[0005] Second, there are multiple challenges such as insufficient maturity of the industry chain and differentiated demands. It is necessary to carry out refined construction according to the requirements of coverage, capacity, cost, etc., and promote the development of series products and low-cost integrated indoor applications. The 5G indoor distributed system introduces MIMO technology, which has a capacity gain of about 50%-80% compared with the single-channel system. If the indoor distributed system wants to achieve a downlink speed of more than 50Mbit / s, it must be achieved through dual-channel MIMO.

[0006] Therefore, the 5G dual-polarization omnidirectional ceiling antenna is an indispensable and important component of the indoor distribution system. Summary of the invention

[0007] In order to solve the deficiencies of the prior art, the present invention designs a new type of co-cone co-coupling low-cost dual-polarization antenna suitable for 2G / 3G / 4G / 5G / WLAN systems, and the specific antenna form is a dual-polarization omnidirectional ceiling antenna. The preferred design operating frequency of the antenna can be realized as 698~3700MHz, with dual-channel MIMO output, and can be compatible with various communication systems such as 2G / 3G / 4G / 5G / WLAN, and the coverage capability is basically consistent over the entire design frequency band, and the circuit parameters and radiation parameters are excellent, thereby compensating for the spatial attenuation of high-frequency signals and the uneven coverage of traditional antennas, and improving the coverage performance of 5G networks; the introduction of co-cone co-coupling helps to simplify the processing technology of the oscillator, greatly reducing the production cost of the antenna, and has the characteristics of omnidirectional, MIMO, low intermodulation, ultra-wideband, simple structure, and low cost, and can be used in 2G / 3G / 4G / 5G / WLAN mobile communication systems that require omnidirectional coverage.

[0008] The specific antenna form is a dual-polarized omnidirectional ceiling antenna, and the polarization mode is linear polarization, including: outer cover 1, first radiating element 2, isolation plate 3, second radiating element 4, lower cone 5, bottom plate 6, metal coupling layer 7, first coaxial cable 8, second coaxial cable 9 and other components. The outer cover 1 is tightly matched with the bottom plate 6, and other components are covered in the outer cover. Coaxial cables 8 and 9 pass through the bottom plate 6 and the lower cone 5 to feed the radiating elements 2 and 4 separately, and the shielding layer (network cable) of the coaxial cable is welded to the through hole of the lower cone 5, and the core wire of the coaxial cable is welded to the radiating elements 2 and 4 respectively, forming coaxial cable feeding to realize MIMO characteristics. The first radiating vibrator 2 and the second radiating vibrator 4 have the same physical size. They are sheet metal vibrators in a metal "flying shape". There are "flange" structures on the left and right above the radiating vibrator. The radiating vibrator is provided with slots on the vertical facade perpendicular to the lower cone 5. The radiating vibrators 2 and 4 each have a grounding foot, which are fixed on the lower cone 5 on the left and right by blind rivets. An isolation sheet 3 is introduced between the radiating vibrators and fixed in the physical center of the lower cone by blind rivets. A metal coupling layer 7 is provided on the inner facade (platform surface) of the outer cover 1, that is, directly above the radiation of the first radiating vibrator 2 (the second radiating vibrator 4), which mainly plays the role of co-coupling of the radiating vibrators and can effectively broaden the effective wavelength of the antenna. Compared with the existing dual-polarized omnidirectional ceiling antenna, the co-cone and co-coupled design is introduced to achieve ultra-wideband (698-3700MHz). The coverage capability is basically consistent over the entire design frequency band, and the circuit parameters and radiation parameters are excellent, thereby compensating for the spatial attenuation of high-frequency signals and the uneven coverage of traditional antennas, and improving the coverage performance of 5G networks.

[0009] The present invention specifically adopts the following technical solutions:

[0010] A novel co-conical co-coupled low-cost dual-polarization antenna, characterized in that: it is a dual-polarization omnidirectional ceiling antenna and has a symmetrical structure;

[0011] Two identical metal flying vibrators (2, 4) are respectively fixed on the upper platform of the lower cone (5) as radiating vibrators to form a dual-polarized radiating unit; except for the grounding pins, the edges of the radiating vibrators maintain staggered ground clearances from the lower cone;

[0012] A metal coupling layer (7) is provided at a coupling spacing distance above the dual-polarized radiation unit, for forming a common coupling of radiation oscillators;

[0013] The circuit parameters and radiation parameters of the antenna are controlled within the technical requirements by adjusting the size and shape of the radiating oscillator, the height clearance from the ground, the size of the slot on the radiating oscillator, the shape and size of the metal coupling layer, and the spacing between the radiating oscillators.

[0014] Furthermore, the top of the radiation vibrator is a structure with flanges on both sides, and a vertical vertical surface facing downward is provided with 3+2 "1-shaped" grooves, and the thickness of the radiation vibrator is 0.3-3mm.

[0015] Furthermore, an isolation plate (3) fixed to the upper platform of the lower cone disk is arranged between the two radiating vibrators.

[0016] Furthermore, the metal coupling layer is in a circular ring shape with a thickness of 0.035-0.5 mm; and the coupling interval distance is 0.3-5 mm.

[0017] Furthermore, the metal coupling layer is arranged on the inner facade of the outer cover (1); a bottom plate (6) is installed at the bottom of the lower cone; and the outer cover and the bottom plate cooperate to form a storage space for the antenna.

[0018] Furthermore, the metal coupling layer is a metal coupling spray layer, and the material is one or more of aluminum oxide, copper, nickel or tin.

[0019] Furthermore, two coaxial cables (8, 9) pass through the bottom plate and the lower cone disk and are separately fed with the radiation oscillators (2, 4); the shielding layers of the coaxial cables are respectively welded to the through holes of the lower cone disk, and the core wires of the coaxial cables are respectively welded to the radiation oscillators to form coaxial cable feeding.

[0020] Furthermore, the radiation vibrator has a grounding foot, which is fixed to the lower cone disk by means of a blind rivet; the isolation plate is L-shaped and is fixed to the center of the upper platform of the lower cone disk by means of a blind rivet.

[0021] Compared with the prior art, the present invention and its preferred solution have the following design advantages and beneficial effects:

[0022] 1. This structure can achieve ultra-wideband, and the frequency can support 698~3700MHz; it is compatible with various communication systems such as 2G / 3G / 4G / 5G / WLAN;

[0023] 2. Introducing the common cone and common coupling design, high gain (Gain ≥ 4dBi), small standing wave (VSWR ≤ 1.4), and excellent isolation index;

[0024] 3. It can support 2T2R and has MIMO features. Each channel supports 698~3700MHz, which improves coverage and network capacity;

[0025] 5. Simple structure, easy assembly and low cost;

[0026] 6. Achieve ultra-wideband, multi-purpose use of one item, and save resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0029] Figure 2 This is a radiation oscillator diagram of an embodiment of the present invention;

[0030] Figure 3 FIG. 1 is a diagram showing an outer cover of an embodiment of the present invention;

[0031] Figure 4 A diagram of a lower cone disk according to an embodiment of the present invention;

[0032] Figure 5 This is a bottom plate diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the features and advantages of this patent more obvious and easy to understand, the following embodiments are specifically described in detail as follows:

[0034] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0036] like Figure 1-Figure 5As shown, this embodiment provides a new type of co-cone and co-coupled low-cost dual-polarization antenna. The specific antenna form is a dual-polarization omnidirectional ceiling antenna, and the polarization mode is linear polarization, including: an outer cover 1, a first radiating element 2, an isolation plate 3, a second radiating element 4, a lower cone disk 5, a bottom plate 6, a metal coupling layer 7, a first coaxial cable 8, and a second coaxial cable 9.

[0037] The outer cover 1 is tightly matched with the bottom plate 6, and other components are covered in the outer cover. As a preferred embodiment, they can all be made of plastic material.

[0038] In order to realize the design of the dipole, the lower cone disk 5 is introduced, and the lower cone disk 5 forms an integral dipole radiation structure with the first radiation oscillator 2 / the second radiation oscillator 4 through the first coaxial cable 8 / the second coaxial cable 9, wherein the first radiation oscillator 2 and the second radiation oscillator 4 share a cone. The lower cone disk 5 is a metal special type, with both upper and lower planes, and is cone-shaped (truncated cone).

[0039] The first radiation vibrator 2 and the second radiation vibrator 4 each have a grounding foot, and the grounding foot is provided with a hole. The first radiation vibrator 2 is fixed to the lower cone disk 5 by a blind rivet; the second radiation vibrator 4 is fixed to the lower cone disk 5 by a blind rivet;

[0040] The first radiation vibrator 2 and the second radiation vibrator 4 are respectively fixed on the left and right sides of the platform of the lower cone 5. The lower cone platform can be a regular or irregular plane.

[0041] The first radiation vibrator 2 and the second radiation vibrator 4 have the same physical size, and only show that they are placed in different positions on the lower cone (one on the left and one on the right). The first radiation vibrator 2 (or the second radiation vibrator 4) is a sheet metal vibrator, which is in a metal "flying shape", and there are "flange" structures on the left and right directly above the radiation vibrator; in order to achieve broadband, the wavelength of the radiation vibrator is lengthened or the effective specific frequency, and the radiation vibrator is perpendicular to the vertical facade of the lower cone 5. There are 3 and 2 slots on both sides, respectively, in a "1-shaped" shape, and there is an arm in the middle of the slot with an opening, and a copper hollow eyelet is riveted at the opening. In addition to the grounding foot, the edges of the radiation vibrator maintain a staggered gap from the ground (with the platform surface of the lower cone 5) with the lower cone 5. With the above design as a reference, in actual applications, the facade slots can be replaced with 1-8 "1-shaped" slots, which are metal radiators, or can be other dielectric electroplating metal processes (weldable) to achieve different technical indicators.

[0042] The radiating vibrator is a metal radiator, or may be other medium (weldable) using a metal electroplating process. The thickness of the radiating vibrator is preferably 1 mm, and the thickness may also be set to 0.3-3 mm.

[0043] The first coaxial cable 8 passes through the bottom plate 6 and the lower cone disk 5, so that the shielding layer (network cable) of the coaxial cable is welded to the through hole of the lower cone disk 5, and the core wire of the coaxial cable passes through the copper hollow eyelet of the first radiating vibrator 2 and is welded to the first radiating vibrator 2 to form a coaxial cable feeding; the second coaxial cable 9 passes through the bottom plate 6 and the lower cone disk 5, so that the shielding layer (network cable) of the coaxial cable is welded to the through hole of the lower cone disk 5, and the core wire of the coaxial cable passes through the copper hollow eyelet of the second radiating vibrator 4 and is welded to the second radiating vibrator 4 to form a coaxial cable feeding.

[0044] In order to obtain better port isolation, an isolation plate 3 is introduced between the radiating oscillators. The isolation plate is in an "L shape" with three circular holes at the bend. It is fixed in the physical middle of the lower cone disk by blind rivets. The isolation plate is a metal isolation plate or other medium using an electroplated metal process.

[0045] The inner facade (platform surface) of the outer cover 1, that is, directly above the radiation of the first radiation oscillator 2 (the second radiation oscillator 4), is provided with a metal coupling layer 7, which is a metal ring and preferably has a thickness of 0.3 mm, and the thickness can also be set to 0.035-0.5 mm.

[0046] Preferably, the metal coupling layer 7 is a metal nano-sprayed layer, and the material is one or more of aluminum oxide, copper, nickel or tin, and can also be replaced by other metal rings. The metal coupling layer 7 and the radiating vibrator have a certain height interval, and the interval is preferably 0.9mm, and the interval can also be set to 0.3-5mm. It mainly plays the principle of co-coupling of the radiating vibrators, which can effectively broaden the effective wavelength of the antenna.

[0047] Through the above design, the radiating vibrator is fed and used separately, and all the technical indicators of the antenna (circuit parameters, radiation parameters) can be controlled within the technical requirements by adjusting the size and shape of the first radiating vibrator 2 / the second radiating vibrator 4, the height gap from the ground, the size of the slot on the radiating vibrator, and the shape and size of the coupling spray layer; and the spacing distance between the radiating vibrators.

[0048] The above are preferred embodiments of the present invention. Any changes made according to the technical solution of the present invention, as long as the resulting functions do not exceed the scope of the technical solution of the present invention, belong to the protection scope of the present invention.

[0049] This patent is not limited to the above-mentioned best implementation mode. Anyone can derive other various forms of novel co-conical co-coupled low-cost dual-polarization antennas under the inspiration of this patent. All equal changes and modifications made according to the scope of the patent application of the present invention should be covered by this patent.

Claims

1. A novel co-conical co-coupled low-cost dual-polarized antenna, characterized by: It is a dual-polarized omnidirectional ceiling antenna with a symmetrical structure; Two identical metal flying vibrators are used as radiation vibrators (2, 4) and are respectively fixed on the upper platform of the lower cone (5) to form a dual-polarization radiation unit; the top of the radiation vibrator is a structure with flanges on both sides, and the vertical facade is provided with 3+2 "1-shaped" slots facing downwards; except for the grounding feet, the edges of the radiation vibrators maintain a staggered ground clearance from the lower cone; an isolation plate (3) fixed to the upper platform of the lower cone is provided between the two radiation vibrators; A metal coupling layer (7) is provided at the coupling spacing distance above the dual-polarized radiation unit, for forming a common coupling of the radiation oscillators to widen the effective wavelength of the antenna; the metal coupling layer is in a circular ring shape and has a thickness of 0.035-0.5 mm; the coupling spacing distance is 0.3-5 mm; The metal coupling layer is arranged on the inner facade of the outer cover (1); a bottom plate (6) is installed at the bottom of the lower cone; the outer cover and the bottom plate cooperate to form a storage space for the antenna; Two coaxial cables (8, 9) pass through the bottom plate and the lower cone disk and are separately fed to the two radiation oscillators (2, 4); the shielding layers of the coaxial cables are respectively welded to the through holes of the lower cone disk, and the core wires of the coaxial cables are respectively welded to the radiation oscillators to form coaxial cable feeding; The circuit parameters and radiation parameters of the antenna are controlled within the design target by adjusting the size and shape of the radiating oscillator, the height of the ground clearance, the size of the slot on the radiating oscillator, the shape and size of the metal coupling layer, and the spacing between the radiating oscillators.

2. The novel co-conical co-coupled low-cost dual-polarization antenna according to claim 1 is characterized in that: The thickness of the radiation oscillator is 0.3-3mm.

3. The novel co-conical co-coupled low-cost dual-polarization antenna according to claim 1 is characterized in that: The metal coupling layer is a metal coupling spray layer, and the material is one or more of aluminum oxide, copper, nickel or tin.

4. The novel co-conical co-coupled low-cost dual-polarization antenna according to claim 1, characterized in that: The radiation vibrator has a grounding foot, which is fixed on the lower cone disk by a blind rivet; the isolation plate is L-shaped and is fixed to the center of the upper platform of the lower cone disk by a blind rivet.

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