CN105281020B - A kind of mobile terminal antenna device and its mobile terminal - Google Patents
A kind of mobile terminal antenna device and its mobile terminal Download PDFInfo
- Publication number
- CN105281020B CN105281020B CN201410487769.0A CN201410487769A CN105281020B CN 105281020 B CN105281020 B CN 105281020B CN 201410487769 A CN201410487769 A CN 201410487769A CN 105281020 B CN105281020 B CN 105281020B
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- metal arm
- metal
- mobile terminal
- arm
- frequency
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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Abstract
The present invention relates to electronic technology fields, provide a kind of mobile terminal antenna device, it include: metal frame, it is equipped with an at least breakpoint on one side on the metal frame, and it is connected to the excitation piece of radio-frequency front-end, metal frame is divided into the first metal arm and the second metal arm by the breakpoint, and first metal arm is shorter than the second metal arm, the excitation piece is coupled with first metal arm, and second metal arm is coupled by the first metal arm with the excitation piece.Meanwhile the present invention provides a kind of mobile terminal, said antenna device has been used.The present invention solves antenna low frequency bandwidth problem, while having the characteristics that debugging is convenient.
Description
Technical field
The present invention relates to electronic technology field more particularly to a kind of metal frame antenna devices.
Background technique
For the mobile terminal of common plastic shell, user prefers the mobile terminal of metal-like, and thus
Bring aerial signal problem is always to perplex the problem of industry.
At present relatively there are three types of effective solutions: directly-fed side break multipoint system, the disconnected multipoint system in directly-fed bottom edge
With the disconnected multipoint system in manifold type bottom edge.Each of them solution has several concrete implementation mode.
A kind of coupling feed-in type antenna assembly of existing mobile terminal couples metal frame bottom edge breakpoint using antenna
Mode；Antenna branch one is coupled with longer first metal arm, generates low-frequency resonant, and antenna branch two and the second metal arm generate
High-frequency resonant.If breakpoint location is moved to right, so that the first metal arm is shorter than the second metal arm (shown in 1b as shown), then antenna
Low frequency smaller bandwidth.As shown in Figure 1 b, breakpoint moves to right.As illustrated in figure 1 c, for breakpoint at right side, low frequency bandwidth is brighter than primary
There are many narrow bandwidth, and high frequency bandwidth improves.In addition the coupling of existing USB module and metal arm can be reinforced when being charged using USB
Communication performance of the mobile terminal in high frequency.And drawn a conclusion according to experiment, when being charged using USB, under the performance of low-frequency range is
Drop.
Summary of the invention
In order to overcome the technological deficiency of prior art low-frequency band width, on the one hand the embodiment of the present invention provides a kind of shifting
Dynamic terminal antenna device, comprising: metal frame is equipped with an at least breakpoint on the metal frame on one side, and before being connected to radio frequency
Metal frame is divided into the first metal arm and the second metal arm by the excitation piece at end, the breakpoint, and first metal arm is than
Two metal arms are short, and the excitation piece is coupled with first metal arm, and second metal arm passes through the first metal arm and institute
State excitation piece coupling.
On the other hand the embodiment of the present invention provides a kind of mobile terminal, including display screen, mainboard, USB module, loudspeaking
Device, antenna are connected to the excitation piece of radio-frequency front-end, and the metal frame of the antenna has is equipped with an at least breakpoint on one side, described disconnected
Metal frame is divided into the first metal arm and the second metal arm by point, and first metal arm is shorter than the second metal arm, the excitation
Piece is coupled with first metal arm, and second metal arm is coupled by the first metal arm with the excitation piece.
Mobile terminal antenna device and its mobile terminal provided in an embodiment of the present invention have as follows compared with prior art
Advantage:
1, the first metal arm is coupled with excitation piece, generates high-frequency resonant；Second metal arm and swashs further through the first metal arm
Piece coupling is encouraged, low-frequency resonant is generated；Therefore, the scheme for being coupled only to long metal arm compared to excitation piece has the band of better low frequency
It is wide；
2, the second metal arm is coupled by the first metal arm with excitation piece, has not only generated low-frequency resonant but also generation high frequency is secondary
Resonance, had not only contributed the bandwidth of low frequency, but also contributed to high frequency bandwidth.
Detailed description of the invention
The present invention is described in detail with reference to the accompanying drawing:
Fig. 1 a, Fig. 1 b are the structural schematic diagrams of the prior art；
Fig. 1 c is the antenna actual measurement S parameter figure of the prior art；
Fig. 2 is a kind of structural schematic diagram of mobile terminal antenna Installation practice one of the present invention；
Fig. 3 is a kind of low-frequency impedance circle diagram of mobile terminal antenna Installation practice one of the present invention；
Fig. 4 is a kind of high-frequency resistance circle diagram of mobile terminal antenna Installation practice one of the present invention；
Fig. 5 is a kind of equivalent capacity Parameter Map of the mobile terminal antenna device L string C of the present invention in different frequency range；
Fig. 6 is that a kind of antenna of mobile terminal antenna Installation practice one of the present invention surveys S parameter figure；
Fig. 7 is a kind of structural schematic diagram of mobile terminal antenna Installation practice two of the present invention；
Fig. 8 is a kind of structural schematic diagram of mobile terminal antenna Installation practice three of the present invention；
Fig. 9 is a kind of mobile terminal of the present invention when being charged using USB, the Parameter Map that antenna efficiency improves.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " radial direction ", " length ", " width ", " thickness ",
The orientation of instructions such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two
More than.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
When the embodiment of the present invention refers to the ordinal numbers such as " first ", " second ", unless based on context its express really it is suitable
The meaning of sequence, it should be understood that only play differentiation and be used.
Embodiment 1
Referring to FIG. 2, being an a kind of specific embodiment of mobile terminal antenna device of the present invention.
A kind of mobile terminal antenna device of the present embodiment a, comprising: mainboard or display screen metallic support 11；One metal frame
12, it is equipped with an at least breakpoint on one side on the metal frame 12, and be connected to the excitation piece of radio-frequency front-end.
Metal frame is divided into the first metal arm 1 and the second metal arm 2 by the breakpoint；First metal arm 1 to the second
Metal arm 2 is short, and the excitation piece is coupled with first metal arm 1, second metal arm 2 by the first metal arm 1 with
The excitation piece coupling.
The excitation piece, the feeding foot 8 including being connected to radio-frequency front-end, an antenna sheet 3 are located at antenna sheet and the first metal
Several lump coupling elements 4,5 between arm, the lamped element 6,7 between antenna sheet and mainboard ground.Antenna sheet is located at the
On the inside of one metal arm, between metal arm and mainboard.
The lump coupling element 4,5 can be the capacitor or capacitor string (inductance and capacitor) of 0.2-3pF, equivalent
In low frequency 1-3pF, high frequency 0.2-1.5pF.
Matching network can be increased at the feeding foot 8 and advanced optimize antenna impedance bandwidth.Primary antenna as shown in Figure 3 is low
Impedance is just relatively suitble to after frequency impedance and string 2pF capacitor.Impedance after primary antenna high-frequency resistance and string 1pF as shown in Figure 4 is rigid
Like relatively suitable.
It needs to construct a series network varying with frequency in next step, allows it in low frequency equivalent capacity 2pF or so, allow it
In high frequency equivalent 1pF or so.As the component value of Fig. 5 just realizes this function.Network topology can also be changed to capacitor string
The mode of (capacitor and inductance).Different antennae structure size, the series network varying with frequency needed have slight change, need
Appropriate adjustment.
First metal arm 1 is coupled with excitation piece, generates high-frequency resonant；And second metal arm 2 passes through the first metal arm
1, it is coupled with the excitation piece, generates low-frequency resonant.
In the present embodiment, lamped element can be set in the second metal arm and mainboard, facilitates that tune its high frequency secondary humorous
Vibration frequency.
In the present embodiment, the coupling can also be used between antenna sheet and metal arm mutually by capacitive coupling
It is close and couple.
Fig. 6 is that antenna described in Fig. 2 surveys S parameter figure, it is seen that the low-and high-frequency bandwidth of antenna is all fine.
The present embodiment advantage is:
1, the first metal arm is coupled with excitation piece, generates high-frequency resonant；Second metal arm and swashs further through the first metal arm
Piece coupling is encouraged, low-frequency resonant is generated；Therefore, the scheme for being coupled only to long metal arm compared to excitation piece has the band of better low frequency
It is wide；
2, the second metal arm is coupled by the first metal arm with excitation piece, has not only generated low-frequency resonant but also generation high frequency is secondary
Resonance, had not only contributed the bandwidth of low frequency, but also contributed to high frequency bandwidth.
Embodiment 2
Referring to FIG. 7, being a kind of structure of another specific embodiment of mobile terminal antenna device of the present invention
Schematic diagram.
Unlike the first embodiment, the antenna sheet is directly with the first metal arm close to couple, while antenna sheet optimization shape
Shape is connected to mainboard, and the lamped element in parallel that do not have to is to mainboard.Antenna Design can effectively be simplified without using lamped element, have and save
Antenna arrangement occupied space reduces the beneficial effect of antenna manufacturing cost.
Embodiment 3
Referring to FIG. 8, the structural schematic diagram of another specific embodiment for antenna assembly of the present invention.
Unlike embodiment 1 and embodiment 2, the second antenna sheet 10, second of ground connection is can be used in the first metal arm
The third antenna piece 20 that ground connection can be used in metal arm substitutes, and technical advantage of the invention can be applied to non-gold by this embodiment
In the mobile terminal for belonging to frame, there is a kind of mobile terminal antenna device described in the embodiment of the present invention widely using model
It encloses.
Embodiment 4
The embodiment of the invention also provides a kind of mobile terminal, including display screen, mainboard, USB module, loudspeaker, antenna,
It is connected to the excitation piece of radio-frequency front-end, the metal frame of the antenna has is equipped with an at least breakpoint on one side, and the breakpoint is by metal
Frame is divided into the first metal arm and the second metal arm, and first metal arm is shorter than the second metal arm, the excitation piece with it is described
The coupling of the first metal arm, second metal arm coupled with the excitation piece by the first metal arm.
First metal arm can produce high-frequency resonant, and second metal arm can produce low-frequency resonant and high frequency two
Secondary resonance.
First metal arm can produce high-frequency resonant frequency and be coupled to excitation piece, and second metal arm can produce height
Frequency secondary resonance is coupled to the first metal arm and then is coupled to excitation piece.
Second metal arm can be coupled by the first metal arm with the excitation piece, and second metal arm can produce
Raw low-frequency resonant, is coupled to the first metal arm, and the first metal arm is coupled to excitation piece, makes that piece is motivated to generate low-frequency resonant.
The case where Fig. 9 is the mobile terminal of the embodiment of the present invention when being charged using USB, and antenna efficiency improves.
The embodiment of the present invention overcomes the skill that communication performance of the mobile terminal in low frequency can decline when charging using USB
Art defect can guarantee that the call performance of height frequency range is all in preferable states when charging using USB.
The above content is in conjunction with specific embodiments to further description of the invention, and it cannot be said that implementing to be specific
Scheme is only limited to these instructions.Such as: can understand the invention is intended under the premise of freely adjust the position of each breakpoint of metal frame
It sets, the position and each coupling branch length of the first grounding point and the second tie point carry out the optimization of antenna.For belonging to the present invention
For those skilled in the art, without departing from the inventive concept of the premise, a specific embodiment of the invention Without wishing
In examples detailed above, in specific implementation process of the invention, specific embodiment can also make several deductions or optimization, these
It deduces or optimization all shall be regarded as belonging to protection scope of the present invention.
Claims (4)
1. a kind of mobile terminal antenna device, comprising: metal frame is equipped with an at least breakpoint on the metal frame on one side, and
It is connected to the excitation piece of radio-frequency front-end, which is characterized in that metal frame is divided into the first metal arm and the second metal by the breakpoint
Arm, first metal arm is shorter than the second metal arm, and the excitation piece is coupled with first metal arm, second metal
Arm is coupled by the first metal arm with the excitation piece；The excitation piece is connected to the first metal arm by coupling element；It is described
Mobile terminal antenna device includes a mainboard；Lamped element is set between second metal arm and mainboard, facilitates and tunes its high frequency two
Secondary resonance frequency；First metal arm generates high-frequency resonant, and second metal arm generates low-frequency resonant and high frequency is secondary humorous
Vibration.
2. a kind of mobile terminal antenna device according to claim 1, which is characterized in that the coupling element is capacitor member
Part.
3. a kind of mobile terminal antenna device according to claim 1, which is characterized in that first metal arm and
Two metal arms are antenna sheet.
4. a kind of mobile terminal including mobile terminal antenna device as described in claim 1, which is characterized in that including display
Screen, USB module, loudspeaker.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410487769.0A CN105281020B (en) | 2014-09-22 | 2014-09-22 | A kind of mobile terminal antenna device and its mobile terminal |
| PCT/CN2015/086499 WO2016045459A1 (en) | 2014-09-22 | 2015-08-10 | Antenna device for mobile terminal, and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410487769.0A CN105281020B (en) | 2014-09-22 | 2014-09-22 | A kind of mobile terminal antenna device and its mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105281020A CN105281020A (en) | 2016-01-27 |
| CN105281020B true CN105281020B (en) | 2019-10-18 |
Family
ID=55149622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410487769.0A Active CN105281020B (en) | 2014-09-22 | 2014-09-22 | A kind of mobile terminal antenna device and its mobile terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105281020B (en) |
| WO (1) | WO2016045459A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329062A (en) * | 2016-09-30 | 2017-01-11 | 努比亚技术有限公司 | Multi-frequency antenna structure and electronic device |
| US10944151B2 (en) | 2017-02-24 | 2021-03-09 | Chiun Mai Communication Systems, Inc. | Antenna structure and wireless communication device using same |
| CN107611565B (en) * | 2017-09-13 | 2020-11-10 | 维沃移动通信有限公司 | GPS-WIFI antenna and mobile terminal |
| CN113555689B (en) * | 2020-04-24 | 2024-01-30 | 深圳市万普拉斯科技有限公司 | Communication device and mobile terminal |
| CN112290197B (en) * | 2020-09-21 | 2023-07-14 | 深圳市思讯通信技术有限公司 | Miniature directional high-gain antenna applied to TWS true wireless earphone |
| CN114142220A (en) * | 2021-11-30 | 2022-03-04 | 维沃移动通信有限公司 | Antenna structure and electronic device |
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- 2014-09-22 CN CN201410487769.0A patent/CN105281020B/en active Active
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2015
- 2015-08-10 WO PCT/CN2015/086499 patent/WO2016045459A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012144197A1 (en) * | 2011-04-22 | 2012-10-26 | パナソニック株式会社 | Portable wireless terminal |
| CN102368575A (en) * | 2011-09-08 | 2012-03-07 | 广东欧珀移动通信有限公司 | Built-in secondary radiating antenna |
| CN103545610A (en) * | 2012-07-11 | 2014-01-29 | 启碁科技股份有限公司 | Broadband antenna and wireless communication device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105281020A (en) | 2016-01-27 |
| WO2016045459A1 (en) | 2016-03-31 |
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