CN109301476B - Flat LTE (Long term evolution) ultra-wideband antenna with metal back cover - Google Patents
Flat LTE (Long term evolution) ultra-wideband antenna with metal back cover Download PDFInfo
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- CN109301476B CN109301476B CN201811393393.1A CN201811393393A CN109301476B CN 109301476 B CN109301476 B CN 109301476B CN 201811393393 A CN201811393393 A CN 201811393393A CN 109301476 B CN109301476 B CN 109301476B
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- antenna
- branch
- shell
- electrically connected
- short branch
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- 239000002184 metal Substances 0.000 title claims abstract description 17
- 230000007774 longterm Effects 0.000 title description 2
- 230000003071 parasitic effect Effects 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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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
-
- 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
-
- 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
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
- H01Q1/2266—Supports; Mounting means by structural association with other equipment or articles used with computer equipment disposed inside the computer
-
- 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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
-
- 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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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Support Of Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
The invention discloses a metal back cover flat plate LTE ultra-bandwidth antenna, which comprises a shell and an antenna, wherein a medium is arranged on the inner side of the top end of the shell, the antenna is arranged at the connection position of the medium on the back surface of the flat plate and the shell, and the antenna is electrically connected with a circuit on a PCB (printed circuit board); the antenna comprises an antenna long branch, an antenna short branch and a parasitic unit, wherein the antenna short branch is arranged at the position where the inner side of the top end of the shell is connected with a medium, the end part of one side of the antenna short branch is provided with the antenna long branch, the antenna short branch and the antenna long branch are electrically connected with a feed point, an antenna gap is arranged between the antenna short branch and the parasitic unit, and a feed point is arranged at the position where the parasitic unit deviates to the antenna gap; the device has the advantages of simple structure, space saving and cost saving, can be suitable for flat plates, notebooks and Internet of things equipment, can realize (700-960, 1710-2690) MHz high-bandwidth full coverage, and can cover intermediate frequency to (1400-1710) MHz.
Description
Technical Field
The invention belongs to the technical field of antennas, and particularly relates to a metal back cover flat plate LTE ultra-bandwidth antenna.
Background
With the rapid development of wireless communication technology, the 4G era has been fully entered, the mobile device 4G network is not limited to mobile phones, but large-screen devices bring strong visual and hand feeling experience to people, and for this reason, tablet computers enter the 4G era. In order to pursue user hand feeling experience and good heat dissipation effect, the plastic shell tablet computer can not meet the demands of markets and designs, and at the moment, the metal shell tablet computer can meet the demands, but because the metal material can shield and couple antenna radiation, the traditional IFA or monopole antenna scheme is difficult to meet the current 4G high bandwidth demand, and the difficulty is obviously increased for the design of the antenna. Therefore, how to design a high bandwidth antenna on a metal back cover plate becomes a problem to be solved.
In view of the design of the antenna, the metal back cover flat plate LTE ultra-bandwidth coverage antenna which has a simple structure, saves space and cost and can cover low, medium and high frequency bands at one time is necessary.
Disclosure of Invention
The invention aims to provide a metal back cover flat plate LTE ultra-wideband antenna, which realizes high-bandwidth coverage by the joint action of antenna gaps and parasitic units which are transversely added between feeding and feeding through long and short branches of the antenna, realizes the full coverage of low frequency of 700MHz-960MHz and the coverage of medium and high frequency to 1400MHz-2690MHz, has the advantages of saving space and cost, being capable of covering low, medium and high frequency bands once, having simple structure, being easy to realize and the like, and solves the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a metal back cover flat plate LTE ultra-bandwidth antenna comprises a shell and an antenna, wherein a medium is arranged on the inner side of the top end of the shell, the antenna is arranged at the connection position of the medium on the back surface of the flat plate and the shell, and the antenna is electrically connected with a circuit on a PCB (printed circuit board); the antenna comprises an antenna long branch, an antenna short branch and a parasitic unit, wherein the antenna short branch is arranged at the connection position between the inner side of the top end of the shell and a medium, the antenna long branch is arranged at one side end part of the antenna short branch, the antenna short branch and the antenna long branch are electrically connected with a feed point, an antenna gap is arranged between the antenna short branch and the parasitic unit, a feed point is arranged at the position of the parasitic unit, which is deviated to the antenna gap, the feed point is electrically connected with the parasitic unit, the parasitic unit is electrically connected with an antenna grounding piece, and the antenna grounding piece is electrically connected with the tail end of the antenna.
Preferably, the metal part of the housing is in reference to ground.
Preferably, the PCB board is a double-layer PCB board structure, and the PCB substrate is FR4, epsilon=4.3, delta=0.024.
Compared with the prior art, the invention has the beneficial effects that:
1. the antenna can be designed by means of a bracket or directly paved in an antenna area, so that the antenna has diversified implementation modes and can meet different design requirements;
2. the structure is simple, the space and the cost are saved, and the device can be applied to flat plates, notebooks and Internet of things equipment;
3. full coverage of (700-960, 1710-2690) MHz high bandwidth may be achieved, and intermediate frequency may be covered to (1400-1710) MHz.
Drawings
FIG. 1 is a schematic diagram of the front structure of the present invention;
FIG. 2 is a schematic view of the back structure of the present invention;
fig. 3 is a diagram of an antenna structure of the present invention;
FIG. 4 is a graph of experimental simulation S11 of the present invention;
FIG. 5 is a graph of experimental simulation test passive Efficiency data of the present invention.
In the figure: 1. a housing; 2. a medium; 3. an antenna; 31. a feed point; 32. a feeding point; 33. antenna long branches; 34. antenna short branches; 35. a parasitic element; 36. an antenna grounding plate; 37. an antenna slot; 38. an antenna end.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, the present invention provides a technical solution: a metal back cover flat plate LTE ultra-bandwidth antenna comprises a shell 1 and an antenna 3, wherein a medium 2 is arranged on the inner side of the top end of the shell 1, the antenna 3 is arranged at the connection position of the medium 2 on the back of the flat plate and the shell 1, and the antenna 3 is electrically connected with a circuit on a PCB; the antenna 3 comprises an antenna long branch 33, an antenna short branch 34 and a parasitic element 35, wherein the antenna short branch 34 is arranged at the connection position between the inner side of the top end of the shell 1 and the medium 2, the antenna long branch 33 is arranged at one side end part of the antenna short branch 34, the antenna short branch 34 and the antenna long branch 33 are electrically connected with a feed point 32, an antenna gap 37 is arranged between the antenna short branch 34 and the parasitic element 35, a feed point 31 is arranged at the position of the parasitic element 35, which is deviated from the antenna gap 37, the feed point 31 is electrically connected with the parasitic element 35, the parasitic element 35 is electrically connected with an antenna grounding piece 36, and the antenna grounding piece 36 is electrically connected with an antenna tail end 38.
Specifically, the metal part of the housing 1 is electrically connected to the motherboard reference ground.
Specifically, the PCB is a double-layer PCB structure, and the PCB base material is FR4, epsilon=4.3 and delta=0.024.
As shown in fig. 3, 4 and 5: the current signal is fed from the feed point 32 into the antenna 3, and a coverage 0.7G-0.96GMHz resonance is generated through the antenna long branch 33, a 1.9G-2.17GMHz resonance is generated at the antenna end 38, and at the same time, the antenna slot 37 can widen the bandwidth of 0.7G-0.96GMHz to enable the bandwidth to cover the whole bandwidth of 0.7G-0.96 GMHz; simultaneously, resonance which can cover 1.4G-1.9GMHz is generated through the antenna short branch 34, and meanwhile, the parasitic element 35 can be coupled with resonance which can cover 2.3G-2.69 GMHz; the data of the S11 diagram obtained by experimental simulation show that the return loss of the actual debugging antenna 3 meets the design requirement smaller than-5 dB, and the data of the experimental simulation test passive Efficiency and the data of the S11 diagram correspond to each other.
It should be noted that the material of the medium 2 may be plastic, resin, fiber, etc.
The invention is discussed by taking a metal back cover plate as an example, but the scheme is also applicable to nonmetal plates, notebooks and Internet of things equipment.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a dull and stereotyped LTE hyperbandwidth antenna of metal back of body lid, includes casing (1) and antenna (3), its characterized in that: the inner side of the top end of the shell (1) is provided with a medium (2), the antenna (3) is arranged at the connection position of the medium (2) on the back of the flat plate and the shell (1), and the antenna (3) is electrically connected with a circuit on the PCB; the antenna (3) comprises an antenna long branch (33), an antenna short branch (34) and a parasitic unit (35), wherein the antenna short branch (34) is arranged at the connection position of the inner side of the top end of the shell (1) and the medium (2), one side end part of the antenna short branch (34) is provided with the antenna long branch (33), the antenna short branch (34) and the antenna long branch (33) are electrically connected with a feed point (32), an antenna gap (37) is arranged between the antenna short branch (34) and the parasitic unit (35), a feed point (31) is arranged at the position of the parasitic unit (35) deviated from the antenna gap (37), the feed point (31) is electrically connected with the parasitic unit (35), the parasitic unit (35) is electrically connected with an antenna grounding piece (36), and the antenna grounding piece (36) is electrically connected with an antenna tail end (38).
2. The metal back cover plate LTE ultra-wideband antenna of claim 1, wherein: the metal part of the shell (1) is conducted with the reference ground of the main board.
3. The metal back cover plate LTE ultra-wideband antenna of claim 1, wherein: the PCB is a double-layer PCB structure, the PCB base material is FR4, epsilon=4.3, delta=0.024.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811393393.1A CN109301476B (en) | 2018-11-21 | 2018-11-21 | Flat LTE (Long term evolution) ultra-wideband antenna with metal back cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811393393.1A CN109301476B (en) | 2018-11-21 | 2018-11-21 | Flat LTE (Long term evolution) ultra-wideband antenna with metal back cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109301476A CN109301476A (en) | 2019-02-01 |
| CN109301476B true CN109301476B (en) | 2023-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811393393.1A Active CN109301476B (en) | 2018-11-21 | 2018-11-21 | Flat LTE (Long term evolution) ultra-wideband antenna with metal back cover |
Country Status (1)
| Country | Link |
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| CN (1) | CN109301476B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110061356B (en) * | 2019-03-05 | 2021-05-25 | 惠州Tcl移动通信有限公司 | Antenna and intelligent terminal |
| CN111697351B (en) * | 2019-03-11 | 2021-07-30 | 启碁科技股份有限公司 | Mobile device and antenna structure |
| CN112886195B (en) * | 2021-01-12 | 2023-12-19 | 深圳市信维通信股份有限公司 | Antenna structure suitable for 5G internet of things equipment and internet of things equipment |
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| TW200840138A (en) * | 2007-03-27 | 2008-10-01 | Lite On Technology Corp | Ultra-wide band antenna and plug-and-play device using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003078333A (en) * | 2001-08-30 | 2003-03-14 | Murata Mfg Co Ltd | Radio communication apparatus |
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2018
- 2018-11-21 CN CN201811393393.1A patent/CN109301476B/en active Active
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| CN109301476A (en) | 2019-02-01 |
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