CN106532228A - Antenna structure in metal environment and mobile terminal - Google Patents

Antenna structure in metal environment and mobile terminal Download PDF

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Publication number
CN106532228A
CN106532228A CN201611055897.3A CN201611055897A CN106532228A CN 106532228 A CN106532228 A CN 106532228A CN 201611055897 A CN201611055897 A CN 201611055897A CN 106532228 A CN106532228 A CN 106532228A
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CN
China
Prior art keywords
antenna
branch
sheet metal
spoke side
resonance circuit
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201611055897.3A
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Chinese (zh)
Other versions
CN106532228B (en
Inventor
陈玉稳
刘泰林
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Filing date
Publication date
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Priority to CN201611055897.3A priority Critical patent/CN106532228B/en
Publication of CN106532228A publication Critical patent/CN106532228A/en
Application granted granted Critical
Publication of CN106532228B publication Critical patent/CN106532228B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/48Earthing means; Earth screens; Counterpoises
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/50Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/52Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Abstract

The invention provides an antenna structure in a metal environment and a mobile terminal. The antenna structure includes a grounding structure, an antenna radiation structure, a first metal sheet and a coupling branch; the antenna radiation structure includes a first antenna branch and a second antenna branch; the first antenna branch is provided with a fee end and a first radiation end, and the feed end is connected with the grounding structure; the second antenna branch is provided with a first grounding end and a second radiation end, the first grounding end is connected with the grounding structure, the first radiation end and the second radiation end are oppositely arranged, and a coupling port is formed between the first radiation end and the second radiation end; the first metal sheet and the grounding structure are connected through a connecting branch; and the coupling branch is used for connecting low frequency energy of the first antenna branch to the first metal sheet to enable the first metal sheet to participate in low frequency radiation, thereby improving low frequency antenna efficiency. Moreover, since the coupling branch presents a large-inductance characteristic during high frequency resonance, influence of the first metal sheet on high frequency resonance of an antenna is reduced, and high frequency resonance antenna efficiency is improved.

Description

Antenna structure and mobile terminal under a kind of metal environment
Technical field
The present invention relates to communication technical field, particularly relates to the antenna structure and mobile terminal under a kind of metal environment.
Background technology
Mobile terminal is also more and more urgent to the demand of metal appearance differentiation, but design of the metal appearance to antenna is difficult Degree is very big.
In existing metal appearance design, antenna routing region is generally non-metallic material, or battery back-cover is cracked Gap ensures the realization of antenna performance;And antenna routing region is directed to for metal material or the situation of gap of not cracking in battery back-cover Under cannot then ensure the performance of antenna, metal material can cause antenna performance not good, affect the transmission-receiving function of antenna, to user with Carry out greatly inconvenience;I.e. prior art cannot ensure the tranception-quality of antenna under conditions of metal appearance is met.
The content of the invention
It is an object of the invention to provide the antenna structure and mobile terminal under a kind of metal environment, solves prior art The not good problem of antenna performance under middle metal environment.
On the one hand, the embodiment of the present invention provides the antenna structure under a kind of metal environment, including:
Ground structure;
Aerial radiation structure, the aerial radiation structure include first antenna branch and the second antenna branch;Wherein, it is described First antenna branch is provided with feed end and the first spoke side, and the feed end is connected with the ground structure;Described second day Line branch is provided with the first earth terminal and the second spoke side, and first earth terminal is connected with the ground structure, and described first Spoke side and second spoke side are oppositely arranged, and are formed with first between first spoke side and second spoke side Coupling port;
First sheet metal, by a connection branch road connection between first sheet metal and the ground structure;
Coupling branch road, the coupling branch road is arranged between the first antenna branch and first sheet metal, described Branch road is coupled for the low frequency energy of the first antenna branch is connected to first sheet metal.
On the other hand, the embodiment of the present invention also provides a kind of mobile terminal, and the mobile terminal includes day as above Cable architecture.
The above-mentioned technical proposal of the present invention at least has the advantages that:
Antenna structure and mobile terminal under the metal environment of the embodiment of the present invention, by coupling branch road by first antenna point The low frequency energy for propping up is connected on the first sheet metal so that the first sheet metal participates in low frequency radiation, improves low-frequency antenna efficiency; And first antenna branch and the second antenna branch form antenna high-frequency resonant, and present in high-frequency resonant greatly due to coupling branch road Inductance characteristic, considerably reduces impact of first sheet metal to antenna high-frequency resonant, reduces high-frequency resonant debugging difficulty, carry The efficiency of high-frequency resonant antenna is risen, and has improve the performance of whole antenna.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by institute in the description to the embodiment of the present invention The accompanying drawing that needs are used is briefly described, it should be apparent that, drawings in the following description are only some enforcements of the present invention Example, for those of ordinary skill in the art, without having to pay creative labor, can be with according to these accompanying drawings Obtain other accompanying drawings.
Fig. 1 represents one of structural representation of antenna structure under the metal environment that the first embodiment of the present invention is provided;
Fig. 2 represents the two of the structural representation of the antenna structure under the metal environment that the first embodiment of the present invention is provided.
Description of reference numerals:
1- ground structures;2- first antennas branch;21- feed ends;The first spoke sides of 22-;The 4th spoke sides of 23-;3- Two antenna branch;The first earth terminals of 31-;The second spoke sides of 32-;The first coupling ports of 4-;The first sheet metals of 5-;6- connections Road;7- couples branch road;8- third antennas branch;The second earth terminals of 81-;The 3rd spoke sides of 82-;The second coupling ports of 9-.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is a part of embodiment of the invention, rather than the embodiment of whole.Based on this Embodiment in bright, the every other enforcement obtained under the premise of creative work is not made by those of ordinary skill in the art Example, belongs to the scope of protection of the invention.
First embodiment
As shown in figure 1, the first embodiment of the present invention provides the antenna structure under a kind of metal environment, including:
Ground structure 1;
Aerial radiation structure, the aerial radiation structure include first antenna branch 2 and the second antenna branch 3;Wherein, it is described First antenna branch 2 is provided with feed end 21 and the first spoke side 22, and the feed end 21 is connected with the ground structure 1;Institute State the second antenna branch 3 and be provided with the first earth terminal 31 and the second spoke side 32, first earth terminal 31 and the ground junction Structure 1 connects, and first spoke side 22 is oppositely arranged with the second spoke side 32, and first spoke side 22 and second spoke Penetrate the first coupling port 4 is formed between end 32;
First sheet metal 5, is connected by a connection branch road 6 between first sheet metal 5 and the ground structure 1;
Coupling branch road 7, the coupling branch road 7 are arranged between the first antenna branch 2 and first sheet metal 5, The branch road 7 that couples is for being connected to first sheet metal 5 by the low frequency energy of the first antenna branch 2.
First antenna branch 2 and the formation antenna high-frequency resonant of the second antenna branch 3 in the first embodiment of the present invention, and by Be presented big inductive aspect when branch road 7 being coupled in high-frequency resonant, be in high impedance to high frequency so that high-frequency resonant is mainly by first day Line branch 2 and the second antenna branch 3 are controlled, i.e., the antenna structure is not affected by the first sheet metal 5 under free harmonic vibration state, Impact of first sheet metal 5 to antenna high-frequency resonant is significantly reduced, so as to reduce high-frequency resonant debugging difficulty, height is improved The efficiency of frequency resonant antenna;Couple branch road 7 simultaneously the low frequency energy of first antenna branch 2 is connected on the first sheet metal 5, Make full use of the first sheet metal 5 to carry out low frequency radiation, improve the efficiency of low-frequency resonant antenna.
Further, in the first embodiment of the present invention, ground structure 1 can be the gold of the protection touch-screen of mobile terminal Category support (the alternatively referred to as platen bracket of mobile terminal), or the printed circuit board (i.e. pcb board) of mobile terminal, here is not Make concrete restriction.
Specifically, in the first embodiment of the present invention, the first sheet metal 5 can be arranged on the front or the back side of mobile terminal, For decorative appearance;Can also insert injection moulding inside mobile terminal, for lifting intensity.
Specifically, described in the first embodiment of the present invention, the first coupling port 4 is a fracture, and the fracture is for separately institute State the first spoke side and the second spoke side;I.e. the fracture is used to separate first antenna branch 2 and the second antenna branch 3.
Or, first coupling port 4 is provided with the first resonance circuit, and first resonance circuit is used to turn on first day Line branch 2 and the second antenna branch 3;Specifically, the first end of first resonance circuit is connected with first spoke side 22, Second end of first resonance circuit is connected with second spoke side 32, wherein, comprising the in first resonance circuit One electric capacity.
I.e. in the first embodiment of the present invention, the first coupling port 4 can be a fracture, separate first by the fracture Antenna branch 2 and the second antenna branch 3;Or, the first coupling port 4 can also be one group of complex match, i.e. the first resonance electricity Road, turns on first antenna branch 2 and the second antenna branch 3 by first resonance circuit.Must wrap in first resonance circuit Containing electric capacity, such as first resonance circuit is the first electric capacity and the first inductance, and the first electric capacity and the first inductance can constitute one Individual LC series resonances, it is also possible to constitute a LC parallel resonance, here is not especially limited.
Preferably, branch road 7 is coupled described in the first embodiment of the present invention including:First wire and the second sheet metal;Its In,
The first end of first wire is connected with the first antenna branch 2, the second end of first wire and institute The connection of the second sheet metal is stated, second sheet metal is be arranged in parallel with first sheet metal 5 and second sheet metal and institute State.
In short, extending a wire (i.e. the first wire), the other end connection one of the first wire from first antenna branch 2 Lamellule (i.e. the second sheet metal), controls certain spacing between the second sheet metal and the first sheet metal 5;That is the first wire shape Become a big inductance, inductance value is between 10-47nh;Small capacitances are formed between second sheet metal and the first sheet metal 5, is held Value is between 0.5-2pf.
Or, branch road 7 is coupled described in the first embodiment of the present invention for the second resonance circuit, second resonance circuit First end be connected with the first antenna branch 2, the second end of second resonance circuit is connected with first sheet metal 5 Connect;Wherein, the second electric capacity is included in second resonance circuit.
It can be one group of complex match, i.e. the second resonance circuit to couple branch road 7, by second resonance circuit conducting the One antenna branch 2 and the first sheet metal 5.Electric capacity must be included in second resonance circuit, such as second resonance circuit is the Two electric capacity and the second inductance, and the second electric capacity and the second inductance can constitute a LC series resonance, it is also possible to constitute a LC Parallel resonance, here are not especially limited.As shown in Fig. 2 coupling branch road 7 can be replaced with capacitor and inductor matching, one is formed LC series resonances, expand low-frequency resonant bandwidth, while making sheet metal participate in low frequency radiation, improve low-frequency antenna efficiency.
Further, connect the centre that branch road 6 is arranged at first sheet metal 5 described in the first embodiment of the present invention Position.Connect 6 the first sheet metal of distance 5 of branch road two ends distance is equal or approximately equal, which is not limited to one Specific position.
Specifically, the connection branch road 6 is the second wire or metalwork, i.e., direct by the second wire or metalwork Conducting;Or, the connection branch road 6 is the 3rd resonance circuit, and inductance is included in the 3rd resonance circuit, that is, connect branch road 6 For one group of complex match, i.e. the 3rd resonance circuit, ground structure 1 and the first sheet metal 5 are turned on by the 3rd resonance circuit.Should Inductance must be included in 3rd resonance circuit, such as the 3rd resonance circuit is the 3rd electric capacity and the 3rd inductance, and the 4th electric capacity and 4th inductance can constitute a LC series resonance, it is also possible to constitute a LC parallel resonance, and here is not especially limited.
Further, as shown in Fig. 2 aerial radiation structure described in the first embodiment of the present invention also includes:
Third antenna branch 8, the third antenna branch 8 include the second earth terminal 81 and the 3rd spoke side 82, described Two earth terminals 81 are connected with the ground structure 1;
Wherein, the first antenna branch 2 also includes the 4th spoke side 23, the 3rd spoke side 82 and the 4th spoke Penetrate end 23 to be oppositely arranged, and the second coupling port 9 is formed between the 3rd spoke side 82 and the 4th spoke side 23.
Increase by a third antenna branch 8 in the first embodiment of the present invention, the third antenna branch 8 and ground structure 1 are led It is logical, and between third antenna branch 8 and first antenna branch 2, form a coupling port, i.e. the second coupling port 9.
Specifically, second coupling port 9 is a fracture, and the fracture is used to separate the 3rd spoke side and described 4th spoke side.
Or, second coupling port 9 is provided with the 4th resonance circuit, the first end of the 4th resonance circuit and institute The connection of the 3rd spoke side is stated, the second end of the 4th resonance circuit is connected with the 4th spoke side;Wherein, the described 4th is humorous Shake in circuit comprising the 3rd electric capacity.
I.e. in the first embodiment of the present invention, the second coupling port 9 can be a fracture, separate first by the fracture Antenna branch 2 and third antenna branch 8;Or, the second coupling port 9 can also be one group of complex match, i.e. the 4th resonance electricity Road, turns on first antenna branch 2 and third antenna branch 8 by the 4th resonance circuit.Must wrap in 4th resonance circuit Containing electric capacity, such as the 4th resonance circuit is the 3rd electric capacity and the 3rd inductance, and the 3rd electric capacity and the 3rd inductance can constitute one Individual LC series resonances, it is also possible to constitute a LC parallel resonance, here is not especially limited.
Specifically, in the above embodiment of the present invention, first sheet metal 5 is located at different flat from the ground structure 1 Face, and first sheet metal, 5 place plane has preset height poor with the aerial radiation structure place plane;
Wherein, one group of light perpendicular to the aerial radiation structure can be by the aerial radiation structure division or complete Portion is projected on first sheet metal.I.e. aerial radiation structure (includes first antenna branch, the second antenna branch and the 3rd Antenna branch) view field in whole or in part on the first sheet metal 5, as shown in Figures 1 and 2, the aerial radiation structure On the first sheet metal 5, and away from 5 predeterminable range of the first sheet metal, i.e., described first sheet metal, 5 place plane and the day Beta radiation structure place plane has preset height poor.
To sum up, in the antenna structure under the metal environment that the first embodiment of the present invention is provided, by coupling branch road by the The low frequency energy of one antenna branch is connected on the first sheet metal so that the first sheet metal participates in low frequency radiation, improves low frequency Antenna efficiency;And first antenna branch and the second antenna branch form antenna high-frequency resonant, and due to coupling branch road in harmonic high frequency Big inductance characteristic is presented when shaking, impact of first sheet metal to antenna high-frequency resonant is considerably reduced, is reduced high-frequency resonant Debugging difficulty, improves the efficiency of high-frequency resonant antenna.
Second embodiment
The second embodiment of the present invention provides a kind of mobile terminal, and the mobile terminal includes day knot as above Structure.
In the mobile terminal that the second embodiment of the present invention is provided, first antenna branch and the second antenna branch form antenna High-frequency resonant, and big inductive aspect is presented in high-frequency resonant due to coupling branch road, it is in high impedance to high frequency so that high-frequency resonant Main to be controlled by first antenna branch and the second antenna branch, i.e., the antenna structure does not receive the first metal under free harmonic vibration state The impact of piece, significantly reduces impact of first sheet metal to antenna high-frequency resonant, so as to reduce high-frequency resonant debugging difficulty, Improve the efficiency of high-frequency resonant antenna;Branch road is coupled simultaneously, and the low frequency energy of first antenna branch is connected to into the first metal On piece, make full use of the first sheet metal to carry out low frequency radiation, improve the efficiency of low-frequency resonant antenna.
It should be noted that the mobile terminal that the second embodiment of the present invention is provided is comprising the day under above-mentioned metal environment The mobile terminal of cable architecture, then all embodiments of the antenna structure under above-mentioned metal environment be applied to the mobile terminal, and Same or analogous beneficial effect can be reached.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.

Claims (12)

1. the antenna structure under a kind of metal environment, it is characterised in that include:
Ground structure;
Aerial radiation structure, the aerial radiation structure include first antenna branch and the second antenna branch;Wherein, described first Antenna branch is provided with feed end and the first spoke side, and the feed end is connected with the ground structure;Second antenna point Prop up and be provided with the first earth terminal and the second spoke side, first earth terminal is connected with the ground structure, first radiation End and second spoke side are oppositely arranged, and are formed with the first coupling between first spoke side and second spoke side Port;
First sheet metal, by a connection branch road connection between first sheet metal and the ground structure;
Coupling branch road, the coupling branch road are arranged between the first antenna branch and first sheet metal, the coupling Branch road is for being connected to first sheet metal by the low frequency energy of the first antenna branch.
2. antenna structure according to claim 1, it is characterised in that first coupling port is a fracture, it is described disconnected Mouth is for separately first spoke side and the second spoke side.
3. antenna structure according to claim 1, it is characterised in that first coupling port is provided with the first resonance electricity Road, the first end of first resonance circuit are connected with first spoke side, the second end of first resonance circuit and institute The connection of the second spoke side is stated, wherein,
The first electric capacity is included in first resonance circuit.
4. antenna structure according to claim 1, it is characterised in that the coupling branch road includes:First wire and second Sheet metal;Wherein,
The first end of first wire is connected with the first antenna branch, the second end of first wire and described second Sheet metal connects, and second sheet metal is be arranged in parallel with first sheet metal, and second sheet metal and described first There is between sheet metal preset pitch.
5. antenna structure according to claim 1, it is characterised in that the coupling branch road is the second resonance circuit, described The first end of the second resonance circuit is connected with the first antenna branch, the second end of second resonance circuit and described first Sheet metal connects;Wherein,
The second electric capacity is included in second resonance circuit.
6. antenna structure according to claim 1, it is characterised in that the connection branch road is the second wire or metal Part.
7. antenna structure according to claim 1, it is characterised in that the connection branch road is the 3rd resonance circuit, described Inductance is included in 3rd resonance circuit.
8. antenna structure according to claim 1, it is characterised in that the aerial radiation structure also includes:
Third antenna branch, the third antenna branch are provided with the second earth terminal and the 3rd spoke side, second earth terminal It is connected with the ground structure;
Wherein, the first antenna branch also includes the 4th spoke side, and the 3rd spoke side is relative with the 4th spoke side Arrange, and the second coupling port is formed between the 3rd spoke side and the 4th spoke side.
9. antenna structure according to claim 8, it is characterised in that second coupling port is a fracture, it is described disconnected Mouth is for separately the 3rd spoke side and the 4th spoke side.
10. antenna structure according to claim 8, it is characterised in that second coupling port is provided with the 4th resonance Circuit, the first end of the 4th resonance circuit are connected with the 3rd spoke side, the second end of the 4th resonance circuit with The 4th spoke side connection;Wherein,
The 3rd electric capacity is included in 4th resonance circuit.
11. antenna structures according to claim 1 or 8, it is characterised in that first sheet metal and the ground structure Positioned at Different Plane, and the first sheet metal place plane has preset height with the aerial radiation structure place plane Difference;
Wherein, one group of light perpendicular to the aerial radiation structure can be thrown by the aerial radiation structure division or all It is mapped on first sheet metal.
12. a kind of mobile terminals, it is characterised in that the mobile terminal includes the day as described in any one of claim 1 to 11 Cable architecture.
CN201611055897.3A 2016-11-25 2016-11-25 Antenna structure and mobile terminal under a kind of metal environment Active CN106532228B (en)

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CN106532228B CN106532228B (en) 2019-01-29

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN107453055A (en) * 2017-05-02 2017-12-08 瑞声科技(新加坡)有限公司 Antenna and mobile terminal
CN108539382A (en) * 2018-05-21 2018-09-14 上海安费诺永亿通讯电子有限公司 Antenna module and the mobile terminal for using the antenna module
CN112886224A (en) * 2021-01-08 2021-06-01 维沃移动通信有限公司 Antenna structure and terminal equipment
WO2021120003A1 (en) * 2019-12-17 2021-06-24 瑞声声学科技(深圳)有限公司 Metal slot antenna and folding screen terminal
WO2021148004A1 (en) * 2020-01-22 2021-07-29 华为技术有限公司 Antenna apparatus and electronic device

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CN203826540U (en) * 2014-05-28 2014-09-10 惠州硕贝德无线科技股份有限公司 Antenna for communication equipment with metal casing
CN104396086A (en) * 2014-03-28 2015-03-04 华为终端有限公司 Antenna and mobile terminal
US20150155627A1 (en) * 2013-12-04 2015-06-04 Acer Incorporated Communication device and antenna element therein

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WO2008079448A1 (en) * 2006-12-20 2008-07-03 Motorola, Inc. Switched capacitive patch for radio frequency antennas
CN102318138A (en) * 2009-02-17 2012-01-11 索尼爱立信移动通讯有限公司 Antenna arrangement, printed circuit board, portable electronic device & conversion kit
EP2728665A1 (en) * 2012-11-05 2014-05-07 Acer Incorporated Communication device and wide-band antenna element therein
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107453055A (en) * 2017-05-02 2017-12-08 瑞声科技(新加坡)有限公司 Antenna and mobile terminal
CN107453055B (en) * 2017-05-02 2021-02-26 瑞声科技(新加坡)有限公司 Antenna and mobile terminal
CN108539382A (en) * 2018-05-21 2018-09-14 上海安费诺永亿通讯电子有限公司 Antenna module and the mobile terminal for using the antenna module
WO2021120003A1 (en) * 2019-12-17 2021-06-24 瑞声声学科技(深圳)有限公司 Metal slot antenna and folding screen terminal
WO2021148004A1 (en) * 2020-01-22 2021-07-29 华为技术有限公司 Antenna apparatus and electronic device
CN112886224A (en) * 2021-01-08 2021-06-01 维沃移动通信有限公司 Antenna structure and terminal equipment
CN112886224B (en) * 2021-01-08 2023-08-22 维沃移动通信有限公司 Antenna structure and terminal equipment

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