CN113113771A - Multi-band antenna structure - Google Patents

Multi-band antenna structure Download PDF

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Publication number
CN113113771A
CN113113771A CN202110277023.7A CN202110277023A CN113113771A CN 113113771 A CN113113771 A CN 113113771A CN 202110277023 A CN202110277023 A CN 202110277023A CN 113113771 A CN113113771 A CN 113113771A
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antenna
wifi
gnd
floor
feed point
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CN202110277023.7A
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CN113113771B (en
Inventor
东晋雯
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Shenzhen Neoway Technology Co Ltd
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Shenzhen Neoway Technology Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—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
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The present invention relates to a multiband antenna structure. The multiband antenna structure includes: a GND antenna floor; an antenna body, the antenna body comprising: the antenna comprises a Wifi antenna main body and a 4G antenna main body, wherein the Wifi antenna main body and the 4G antenna main body are electrically connected with the GND antenna floor. The multi-band antenna structure can work in 4G and Wifi frequency bands simultaneously by means of sharing a GND antenna floor by the Wifi antenna main body and the 4G antenna main body, and meets the requirement that multiple bands are mutually universal. Meanwhile, the mode of sharing the GND antenna floor can also effectively reduce the size of the antenna structure.

Description

Multi-band antenna structure
Technical Field
The invention relates to the technical field of wireless communication, in particular to a multi-band antenna structure.
Background
In recent years, wireless communication technology has been rapidly developed, and antennas have played a very important role as a transceiver of wireless signals. The external antenna has the characteristics of high efficiency, high gain, easiness in integration with other equipment and the like, and the requirements on the integration level and the concealment of the external antenna are also put forward in the market, so that the high-integration antenna can realize more functions in a limited size, and the antenna with good concealment can avoid the problem of communication failure caused by artificial movement or removal due to the fact that the antenna is too obvious in a large mobile place of personnel.
External antenna devices on the market at present are various in types, and include a magnet adsorption type screw antenna or a sucker antenna, a rod-shaped structure glue rod antenna, a gum adsorption type patch antenna, a positioning dedicated ceramic dielectric antenna and the like. Among numerous antenna types, the glue stick antenna performance of rod-shaped structure is more stable, but the wall effect of wearing is not good under specific scene, influences user experience, and general structure is long and thin, and the section is higher, and performance and structure become the effect of inverse ratio, can't guarantee the better antenna performance of low-frequency range for example when the section is low. The plastic rod antenna of bar-shaped structure is by circuit board subassembly at least, solid plastic part, keep apart the bubble cotton, the gum cover, the radio frequency cable, six parts such as radio frequency connector constitute, generally be the design of two unification bar antenna of double-fed, the whole appearance structure of antenna is a flat cylindrical structure's bar antenna, keep apart the bubble cotton and be located in the middle of two antenna line boards, play fixedly, keep apart inside antenna usefulness, circuit board subassembly is all installed in the gum cover, it is fixed through rivet connection with solid plastic part, the antenna outside adopts length to carry out signal transmission for 0.3 m's radio frequency coaxial cable.
However, the external antenna structure on the market at present only supports a single communication system, and the application scenario is limited.
Disclosure of Invention
Therefore, it is necessary to provide a multiband antenna structure capable of simultaneously operating in 4G and Wifi bands to solve the problem that the antenna structure in the prior art usually only supports a single communication system.
In order to achieve the above object, in one aspect, the present invention provides a multiband antenna structure comprising:
a GND antenna floor;
an antenna body, the antenna body comprising: the antenna comprises a Wifi antenna main body and a 4G antenna main body, wherein the Wifi antenna main body and the 4G antenna main body are electrically connected with the GND antenna floor.
In the multi-band antenna structure provided in the above embodiment, the multi-band antenna structure can simultaneously operate in the 4G and Wifi frequency bands by using the mode that the Wifi antenna main body and the 4G antenna main body share the GND antenna floor, so as to meet the requirement of mutual universality of multiple bands.
In one embodiment, the multiband antenna structure further comprises:
the first antenna patch is connected with the Wifi antenna main body;
a Wifi feed point located between the first antenna patch and the GND antenna floor to electrically connect the first antenna patch with the GND antenna floor;
the second antenna patch is connected with the 4G antenna main body;
a 4G feed point, the 4G feed point is located between the second antenna patch and the GND antenna floor to electrically connect the second antenna patch with the GND antenna floor.
In one embodiment, the 4G antenna body comprises an arc-shaped radiating stub antenna body, and the Wifi antenna body comprises two radiating stub antenna bodies.
In the multi-band antenna structure provided in the above embodiment, by adopting the arc-shaped radiation branch antenna main body, the height and the profile of the multi-band antenna structure are reduced and the concealment of the multi-band antenna structure is improved on the premise of ensuring the radiation performance.
In one embodiment, the multiband antenna structure further includes a PCB, the GND antenna floor, the first antenna patch, the Wifi feeding point, the second antenna patch, and the 4G feeding point are all located on a surface of the PCB, and the Wifi antenna body and the 4G antenna body all penetrate through the PCB to extend to a side of the PCB away from the GND antenna floor.
In the multiband antenna structure provided in the above embodiment, the PCB board can support the antenna body and the GND antenna ground board, so that the structure of the multiband antenna structure is more stable.
In one embodiment, the Wifi feeding point and the 4G feeding point are respectively located on two opposite sides of the center of the PCB, and a distance is provided between the Wifi feeding point and the 4G feeding point.
In the multi-band antenna structure provided in the above embodiment, the Wifi feeding point and the 4G feeding point are respectively located at two sides opposite to the center of the PCB, so that the isolation between the two antenna bodies of the multi-band antenna structure is improved, and the influence of over-strong coupling on the radiation performance is avoided.
In one embodiment, the multiband antenna structure further comprises:
the insulation support foam is positioned on one side of the PCB where the GND antenna floor, the first antenna patch, the Wifi feed point, the second antenna patch and the 4G feed point are arranged, and the GND antenna floor, the first antenna patch, the Wifi feed point, the second antenna patch and the 4G feed point are all positioned between the insulation support foam and the PCB;
the conductive foam is embedded in the insulating support foam and is electrically connected with the GND antenna floor; and the part of the conductive foam, which is in contact with the GND antenna floor, is exposed outside the PCB.
In one embodiment, the multiband antenna structure further comprises a copper stud electrically connected with the conductive foam.
In the multi-band antenna structure provided in the above embodiment, the GND antenna floor is connected with the copper stud through the conductive foam, so that the length of the GND antenna floor is effectively extended, matching of the multi-band antenna structure in low-frequency operation is optimized, and high radiation efficiency of the multi-band antenna structure in low-frequency operation is ensured.
In one embodiment, the multiband antenna structure further comprises:
a housing, wherein a housing cavity is formed inside the housing, and the GND antenna floor, the first antenna patch, the second antenna patch, the Wifi feed point, the 4G feed point, the PCB, the insulating support foam and the conductive foam are all located in the housing cavity;
the lower shell cover covers the accommodating cavity; the copper stud penetrates through the lower shell cover, one end of the copper stud is electrically connected with the conductive foam, and the other end of the copper stud extends to the outer side of the lower shell cover.
In one embodiment, the multiband antenna structure further comprises a waterproof ring, wherein the waterproof ring is sleeved on the periphery of the copper stud and attached to the surface of the lower shell cover.
In the multi-band antenna structure provided in the above embodiment, the periphery of the copper stud is provided with the waterproof ring, which can play a role in water resistance and corrosion resistance.
In one embodiment, the multiband antenna structure further comprises:
a radio frequency connector;
and one end of the radio frequency cable is connected with the radio frequency connector, and the other end of the radio frequency cable penetrates through the copper stud to be connected with the Wifi feed point and the 4G feed point.
The multi-band antenna structure provided by the invention has the following beneficial effects:
according to the multi-band antenna structure provided by the invention, the multi-band antenna structure can work in the 4G and Wifi frequency bands simultaneously by using the mode that the Wifi antenna main body and the 4G antenna main body share the GND antenna floor, so that the requirement of mutual universality of multiple bands is met.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an internal structure of a multiband antenna structure according to an embodiment of the present application;
fig. 2 is a schematic diagram of an external structure of a multiband antenna structure provided in one embodiment of the present application, wherein fig. 2(a) is a front view of the multiband antenna structure provided in one embodiment of the present application, fig. 2(b) is a right view of the multiband antenna structure provided in one embodiment of the present application, and fig. 2(c) is a left view of the multiband antenna structure provided in one embodiment of the present application;
fig. 3 is a waveform diagram of an antenna performance parameter voltage standing wave ratio of the multiband antenna structure provided in one embodiment of the present application, which is tested under a vector network analyzer ZNB8, wherein fig. 3(a) is a voltage standing wave ratio of the multiband antenna structure provided in one embodiment of the present application at full band 600-.
Description of reference numerals:
the antenna comprises a 1-GND antenna floor, a 2-antenna body, a 21-Wifi antenna body, a 22-4G antenna body, a 3-first antenna patch, a 4-Wifi feed point, a 5-second antenna patch, a 6-4G feed point, a 7-PCB, 8-insulating support foam, 9-conductive foam, 10-copper studs, an 11-shell, a 12-lower shell cover, a 13-radio frequency connector and a 14-radio frequency cable.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
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 herein 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.
Spatial relational terms, such as "under," "below," "under," "over," and the like may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, the first antenna patch may be referred to as a second antenna patch, and similarly, the second antenna patch may be referred to as a first antenna patch, without departing from the scope of the present application. The first antenna patch and the second antenna patch are both antenna patches, but they are not the same antenna patch.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
Referring to fig. 1, in an embodiment of the present application, there is provided a multiband antenna structure, including:
a GND antenna floor 1;
antenna body 2, antenna body 2 includes: the Wifi antenna main body 21 and the 4G antenna main body 22, the Wifi antenna main body 21 and the 4G antenna main body 22 are electrically connected to the GND antenna floor 1.
The multiband antenna structure provided in the above embodiment enables the multiband antenna structure to simultaneously operate in the 4G and Wifi frequency bands by the way that the Wifi antenna main body 21 and the 4G antenna main body 22 share the GND antenna floor 1, thereby meeting the requirement of mutual versatility of multiband. Meanwhile, the mode of sharing the GND antenna floor 1 can also effectively reduce the size of the antenna structure.
In one embodiment, a copper-clad floor may be used as the GND antenna floor 1, and an antenna floor made of other materials may also be used as the GND antenna floor 1, and the material of the GND antenna floor 1 is not limited in the present invention.
With continued reference to fig. 1, in one embodiment, the multiband antenna structure further includes:
the first antenna patch 3 is connected with the Wifi antenna main body 21;
a Wifi feed point 4, the Wifi feed point 4 being located between the first antenna patch 3 and the GND antenna floor 1 to electrically connect the first antenna patch 3 with the GND antenna floor 1;
the second antenna patch 5, wherein the second antenna patch 5 is connected with the 4G antenna main body 22;
the 4G feeding point 6, 4G feeding point 6 is located between the second antenna patch 5 and the GND antenna floor 1 to electrically connect the second antenna patch 5 and the GND antenna floor 1.
In the multiband antenna structure provided in the above embodiment, the first antenna patch 3 and the second antenna patch 5 can play a role in optimizing matching, so that the multiband antenna structure has higher radiation efficiency, and can also be used as a bonding pad for fixing the antenna main body 2.
Referring to fig. 1, in one embodiment, the 4G antenna body 22 includes an arc-shaped radiation stub antenna body, and the Wifi antenna body 21 includes two radiation stub antenna bodies.
The antenna structure on the market at present adopts the structure of glue stick formula mostly, and the antenna section of this kind of structure is too high, and the disguise is not good, also is not favorable to and other equipment integrations. The multi-band antenna structure provided in the above embodiment, by adopting the arc-shaped radiation branch antenna main body, reduces the height and the profile of the multi-band antenna structure on the premise of ensuring the radiation performance, and improves the concealment of the multi-band antenna structure. The adoption of the arc-shaped radiation branch antenna main body is also convenient for the multi-band antenna structure to be installed on various communication devices, so that the multi-band antenna structure is easier to integrate with other devices.
In one embodiment, the Wifi antenna main body 21 and the 4G antenna main body 22 can be formed by bending metal wires with diameters of 0.6mm-1.0 mm; specifically, the diameter of the metal wire may be 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1.0mm, and the diameters of the Wifi antenna body 21 and the 4G antenna body 22 are not limited in the present invention. In one embodiment, the Wifi antenna body 21 and the 4G antenna body 22 may also adopt radiating stub antenna bodies made of other materials, and the invention is not limited to the materials of the Wifi antenna body 21 and the 4G antenna body 22.
Referring to fig. 1, in one embodiment, the multiband antenna structure further includes a PCB 7, the GND antenna floor 1, the first antenna patch 3, the Wifi feeding point 4, the second antenna patch 5, and the 4G feeding point 6 are all located on a surface of the PCB 7, and the Wifi antenna main bodies 21 and the 4G antenna main bodies 22 both penetrate the PCB to extend to a side of the PCB 7 away from the GND antenna floor 1.
In the multiband antenna structure provided in the above embodiment, the PCB board 7 can support the antenna main body 2 and the GND antenna floor 1, so that the structure of the multiband antenna structure is more stable.
Specifically, in one embodiment, the PCB board 7 has a through hole, and the Wifi antenna bodies 21 and the 4G antenna bodies 22 are connected to the GND antenna floor 1 on the bottom surface of the PCB board 7 through the through hole.
In one embodiment, the thickness of the PCB board 7 may be 0.8mm to 1.2mm, and specifically, may be 0.8mm, 0.9mm, 1.0mm, 1.1mm, or 1.2 mm; in one embodiment, the PCB board 7 may be made of FR-4 (a composite material made of four-Function epoxy resin, Filler and glass fiber), or other materials; the thickness and material of the PCB 7 are not limited in the present invention.
Referring to fig. 1, in one embodiment, the Wifi feeding point 4 and the 4G feeding point 6 are respectively located on two opposite sides of the center of the PCB board 7, and there is a distance between the Wifi feeding point 4 and the 4G feeding point 6.
In the multi-band antenna structure provided in the above embodiment, the Wifi feeding point 4 and the 4G feeding point 6 are respectively located at two sides opposite to the center of the PCB board 7, so that the isolation between two antenna bodies of the multi-band antenna structure is improved, and the influence of over-coupling on the radiation performance is avoided.
With continued reference to fig. 1, in one embodiment, the multiband antenna structure further includes:
the ground plane comprises insulation support foam 8, the insulation support foam 8 is positioned on one side of the PCB 7 where the GND antenna floor 1, the first antenna patch 3, the Wifi feeding point 4, the second antenna patch 5 and the 4G feeding point 6 are arranged, and the GND antenna floor 1, the first antenna patch 3, the Wifi feeding point 4, the second antenna patch 5 and the 4G feeding point 6 are all positioned between the insulation support foam 8 and the PCB 7;
and the conductive foam 9 is embedded in the insulating support foam 8 and is electrically connected with the GND antenna floor 1.
Specifically, in one embodiment, as shown in fig. 1, the portion of the conductive foam 9 contacting the GND antenna ground plane electrical connection 1 is exposed outside the PCB board 7.
In the multi-band antenna structure provided in the above embodiment, the insulating support foam 8 can play a role in supporting the antenna main body 2, and meanwhile, deformation of the conductive foam 9 due to extrusion can be avoided, so that the working performance of the multi-band antenna structure is ensured.
In one embodiment, the insulating support foam 8 may include, but is not limited to, any one of polyethylene foam, melamine foam, epoxy foam, and the like, and the type or material of the insulating support foam 8 is not limited in the present invention.
In one embodiment, the conductive foam 9 may include, but is not limited to, any one of a common conductive foam, a nickel-plated copper conductive foam, a gold-plated conductive foam, a carbon-plated conductive foam, a tin-plated conductive foam, a conductive aluminum foil foam, a conductive copper foil foam, an omni-directional conductive foam, and the like, and the type or material of the conductive foam 9 is not limited in the present invention.
Referring to fig. 2, in one embodiment, the multiband antenna structure further includes a copper stud 10, and the copper stud 10 is electrically connected to the conductive foam 9.
At present, most external antenna structures on the market have low gain, the radiation efficiency is generally 20-30%, the communication quality can be affected in a complex electromagnetic environment, the user experience is poor, the low radiation efficiency of the antenna means that most energy is not radiated into the space, and the power consumption of a radio frequency device is increased accordingly. In the multi-band antenna structure provided in the above embodiment, the copper stud 10 is used to fix the antenna main body 2, and the GND antenna floor 1 and the copper stud 10 are connected through the conductive foam 9, so that the length of the GND antenna floor 1 is effectively extended, and the standing wave of the low frequency band of the multi-band antenna structure is optimized, thereby optimizing the matching of the multi-band antenna structure when the multi-band antenna structure works at the low frequency band, and ensuring higher radiation efficiency of the multi-band antenna structure when the multi-band antenna structure works at the low frequency band.
Referring to FIG. 3, FIG. 3 shows the voltage standing wave ratio of the antenna performance parameter of the multiband antenna structure tested under the vector network analyzer ZNB8, wherein, as shown in the graph (a) in FIG. 3, the voltage standing wave ratio of the full band 0.6-0.96GHz/1.710-2.690GHz is substantially below 3; as shown in the graph (b) in fig. 3, the voltage standing wave ratios of 2.4 to 2.5GHz of the Wifi antenna frequency band are all below 2, and are all lower than the external antenna standing wave 3.0 required by the industry, so that the low-frequency standing wave of the multiband antenna structure provided in the above embodiment is optimized, and the working performance is improved.
Meanwhile, the fixing mode of the copper stud is more reliable than the fixing modes of magnetic attraction or viscose glue and the like.
Specifically, in one embodiment, a copper stud of type M12 may be used; in another embodiment, other types of copper studs such as M10 or M16 may also be used, and the type of copper stud is not limited in the present invention.
With continued reference to fig. 2, in one embodiment, the multiband antenna structure further includes:
the antenna comprises a shell 11, wherein a containing cavity is formed in the inner side of the shell 11, and a GND antenna floor 1, a first antenna patch 3, a second antenna patch 5, a Wifi feed point 4, a 4G feed point 6, a PCB 7, insulating support foam 8 and conductive foam 9 are all positioned in the containing cavity;
a lower case cover 12 covering the accommodation chamber; the copper stud 10 penetrates through the lower shell cover 12, one end of the copper stud is electrically connected with the conductive foam 9, and the other end of the copper stud extends to the outer side 12 of the lower shell cover.
Specifically, the conductive foam 9 and the insulating support foam 8 are located between the PCB board 7 and the lower cover 12, wherein the conductive layer of the conductive foam 9 is connected to the GND antenna floor 1 and the copper stud 10.
In one embodiment, the housing 11 may include but is not limited to ABS (Acrylonitrile butadiene Styrene) material, and the material of the housing 11 is not limited in the invention. In the multiband antenna structure provided by the above embodiment, the housing 11 is made of ABS material, which not only has high strength and good toughness and is easy to machine and form, but also can resist high temperature, and the highest working temperature can reach the requirement of 75 ℃.
In one embodiment, the diameter of the housing 11 may be 45mm to 65mm, and specifically, may be 45mm, 50mm, 55mm, 60mm, 65mm, or the like; in one embodiment, the height of the housing 11 may be 45mm to 55mm, and specifically, may be 45mm, 50mm, or 55mm, and the diameter and the height of the housing 11 are not limited in the present invention. The above-described embodiments provide a multiband antenna structure in which the structural dimension D (diameter) × H (height) of the case 11 is 50mm × 48.5 mm.
In one embodiment, the multiband antenna structure further comprises a waterproof ring (not shown), wherein the waterproof ring is sleeved on the periphery of the copper stud 10 and attached to the surface of the lower case cover 12.
In the multiband antenna structure provided in the above embodiment, the periphery of the copper stud 10 is provided with a waterproof ring, which can play a role in water resistance and corrosion resistance.
With continued reference to fig. 2, in one embodiment, the multiband antenna structure further includes:
a radio frequency connector 13;
and one end of the radio frequency cable 14 is connected with the radio frequency connector 13, and the other end of the radio frequency cable 14 passes through the copper stud 10 to be connected with the Wifi feeding point 4 and the 4G feeding point 6.
In one embodiment, the rf connector 13 may include, but is not limited to, an SMA connector, and the invention is not limited to the type of the rf connector 13; in one embodiment, the rf cable 14 may include, but is not limited to, an RG174 type rf cable, and the invention is not limited to the type of the rf cable 14.
Specifically, the modulated 4G and/or Wifi signals are input to the back-end communication device, the back-end communication device is in communication connection with the radio frequency connector 13 at the end of the radio frequency cable 14, the signals are respectively input to the radio frequency cable 14 through the radio frequency connector 13 and are transmitted to the antenna main body 2 at the other end of the radio frequency cable 14 through the radio frequency cable 14, after passing through the antenna main body 2, guided waves in the radio frequency cable 14 are converted into electromagnetic waves to be radiated into space, and a user can receive high-quality 4G and/or Wifi signals within the antenna radiation coverage range.
In one embodiment, the operating frequency range of the multi-band antenna structure is 600-.
Referring to tables 1 to 3, tables 1 to 3 show antenna efficiency data of the multiband antenna structure provided in one embodiment in an environment where a dedicated microwave anechoic chamber is used to test the radiation efficiency and gain performance of the antenna, wherein the model of the microwave anechoic chamber is AMS-89230.
TABLE 1 efficiency gain Performance data of the multiband antenna structure of the present invention at 4G Low band
Figure BDA0002977054640000131
TABLE 2 efficiency gain performance data of the multiband antenna structure of the present invention at 4G low frequency band
Figure BDA0002977054640000141
TABLE 3 efficiency gain performance data of the multi-band antenna structure of the present invention at Wifi Low band
Figure BDA0002977054640000151
As can be seen from the data in tables 1 to 3, the efficiency of the 4G low band 600-960MHz is 27.72% -70.91%, the average efficiency is 51.6%, the gain is 0.7-3.6dBi, and the average gain is 2.0 dBi; in 1710-2690MHz of the 4G middle and high frequency band, the radiation efficiency is 36.08-68.07%, the average efficiency is 54.96%, the gain is 1.4-5.0dBi, and the average gain is 3.18 dBi. The efficiency of the Wifi band 2400-2500MHz is 55.84-71.02%, the average efficiency is 63.27%, the gain is 5.2-5.8dBi, and the average gain is 5.62 dBi. In the case of attenuation of the rf cable 14, the external antenna industry generally requires an efficiency greater than 25% and a gain greater than 0dBi is a better performance. As can be seen from the data in tables 1 to 3, the multiband antenna structure provided in the above embodiment has high radiation efficiency, and the performance is in a good state in the industry.
In the description herein, reference to the description of "one of the embodiments," "some embodiments," "other embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A multi-band antenna structure, comprising:
a GND antenna floor;
an antenna body, the antenna body comprising: the antenna comprises a Wifi antenna main body and a 4G antenna main body, wherein the Wifi antenna main body and the 4G antenna main body are electrically connected with the GND antenna floor.
2. The multiband antenna structure of claim 1, further comprising:
the first antenna patch is connected with the Wifi antenna main body;
a Wifi feed point located between the first antenna patch and the GND antenna floor to electrically connect the first antenna patch with the GND antenna floor;
the second antenna patch is connected with the 4G antenna main body;
a 4G feed point, the 4G feed point is located between the second antenna patch and the GND antenna floor to electrically connect the second antenna patch with the GND antenna floor.
3. The multiband antenna structure of claim 1, wherein the 4G antenna body comprises an arc-shaped radiating stub antenna body, and the Wifi antenna body comprises a two-radiating stub antenna body.
4. The multiband antenna structure of claim 3, further comprising a PCB board, wherein the GND antenna floor, the first antenna patch, the Wifi feed point, the second antenna patch, and the 4G feed point are all located on a surface of the PCB board, and the Wifi antenna body and the 4G antenna body all penetrate the PCB board to extend to a side of the PCB board away from the GND antenna floor.
5. The multiband antenna structure of claim 4, wherein the Wifi feed point and the 4G feed point are located on opposite sides of a center of the PCB board, respectively, and a distance is provided between the Wifi feed point and the 4G feed point.
6. The multiband antenna structure of claim 4, further comprising:
the insulation support foam is positioned on one side of the PCB where the GND antenna floor, the first antenna patch, the Wifi feed point, the second antenna patch and the 4G feed point are arranged, and the GND antenna floor, the first antenna patch, the Wifi feed point, the second antenna patch and the 4G feed point are all positioned between the insulation support foam and the PCB;
and the conductive foam is embedded in the insulating support foam and is electrically connected with the GND antenna floor.
7. The multiband antenna structure of claim 6, further comprising a copper stud electrically connected to the conductive foam.
8. The multiband antenna structure of claim 7, further comprising:
a housing, wherein a housing cavity is formed inside the housing, and the GND antenna floor, the first antenna patch, the second antenna patch, the Wifi feed point, the 4G feed point, the PCB, the insulating support foam and the conductive foam are all located in the housing cavity;
the lower shell cover covers the accommodating cavity; the copper stud penetrates through the lower shell cover, one end of the copper stud is electrically connected with the conductive foam, and the other end of the copper stud extends to the outer side of the lower shell cover.
9. The multiband antenna structure of claim 8, further comprising a waterproof ring, wherein the waterproof ring is disposed around the copper stud and attached to a surface of the lower case cover.
10. The multiband antenna structure of claim 8, further comprising:
a radio frequency connector;
and one end of the radio frequency cable is connected with the radio frequency connector, and the other end of the radio frequency cable penetrates through the copper stud to be connected with the Wifi feed point and the 4G feed point.
CN202110277023.7A 2021-03-15 2021-03-15 Multi-Band Antenna Structure Active CN113113771B (en)

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CN201682052U (en) * 2010-04-21 2010-12-22 惠州Tcl移动通信有限公司 Printed circuit board (PCB) used for bearing feeding bonding pad of mobile phone antenna and antenna
CN203826548U (en) * 2014-01-16 2014-09-10 周兰枚 Multi-frequency plate-shaped WLAN antenna with metal wire and plastic part
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