CN207705379U - A kind of antenna of mobile terminal and the mobile terminal with the antenna - Google Patents
A kind of antenna of mobile terminal and the mobile terminal with the antenna Download PDFInfo
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- CN207705379U CN207705379U CN201721875248.8U CN201721875248U CN207705379U CN 207705379 U CN207705379 U CN 207705379U CN 201721875248 U CN201721875248 U CN 201721875248U CN 207705379 U CN207705379 U CN 207705379U
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Abstract
The utility model provides a kind of antenna of mobile terminal and the mobile terminal with the antenna, the mobile terminal has metal battery cover, the antenna includes the feed circuit of the radiator set on the mobile terminal end, the feed end on the Mobile terminal main board and the connection radiator and feed end, gap-shaped empty regions are equipped between the radiator and the Mobile terminal main board, the width of the empty regions is not more than 3 millimeters；The antenna includes：First earthed circuit is set on the Mobile terminal main board, connects the radiator and ground；Second earthed circuit is set on the Mobile terminal main board, connects the radiator and ground；Third earthed circuit is set on the Mobile terminal main board, connects the radiator and ground.The technical solution of the utility model realizes smaller empty regions, saves mobile terminal space；Cover multiple working frequency range.
Description
Technical field
The utility model is related to the antenna of field of mobile terminals more particularly to a kind of mobile terminal and with the shifting of the antenna
Dynamic terminal.
Background technology
Nowadays, with the development of the communication technology, 2G, 3G, 4G, WIFI, GPS network network coexist, in order to be compatible with heterogeneous networks, intelligence
The antenna of the mobile devices such as energy mobile phone is required to be operated in multiple frequency ranges, and in mobile terminal device field, antenna is set
Meter environment is extremely complex, and space is limited, and must consider and other functional unit communal space structures.It is mobile in recent years whole
End is designed frequently with large-size screen monitors, and the smart mobile phone of especially which part model uses the design of whole face screen, that is, screen accounts for
A nearly whole mobile phone plane, this mobile phone lays on metal frame the radiator of antenna frequently with metal frame, in correspondence
The back side of screen not only takes full advantage of the metal of mobile phone itself equipped with glass battery cover relative to conventional plastic chassis arrangements
Structure additionally provides better aesthetic effect.
However, the Antenna Design of the prior art must there are enough clearance zones between antenna radiator and motherboard circuit
Domain, the area of isolation of the empty regions, that is, antenna radiator and other metal parts, to ensure the performance of antenna, empty regions
It is the bigger the better.The design method that antenna is laid on above-mentioned metal frame, often sets one between Mobile terminal main board and antenna radiator
Gap is as empty regions.In order to ensure antenna performance, the prior art for primary antenna empty regions width 3 millimeters with
On, 5 millimeters or more are even up to for the width of the empty regions of diversity antenna.The especially existing antenna using metal frame
Design that requirement to empty regions is very high, the size of headroom and the directly proportional and present trend of the performance of antenna are that screen is more next
Bigger, the empty regions for the antenna that can be reserved are smaller and smaller, this just brings challenge to the design of antenna.
Therefore it needs to design a kind of antenna suitable for mobile terminal, day can be met using limited design environmental conditions
Multiple working frequency range demands of line, while the size of empty regions is reduced, save the use of mobile terminal inner space.
Utility model content
In order to overcome above-mentioned technological deficiency, the purpose of this utility model is to provide a kind of antenna of mobile terminal and have
The mobile terminal of the antenna can realize the covering of multiple working frequency range in smaller empty regions.
The utility model discloses a kind of antenna of mobile terminal, the mobile terminal has metal battery cover, the day
Line includes the radiator set on the mobile terminal end, the feed end on the Mobile terminal main board and the connection spoke
The feed circuit of beam and feed end is equipped with gap-shaped empty regions between the radiator and the Mobile terminal main board,
The width of the empty regions is not more than 3 millimeters；The antenna includes：First earthed circuit is set to the Mobile terminal main board
On, the radiator and ground are connected, makes the Antenna Operation in the first band limits with feed circuit cooperation；Second ground connection
Circuit is set on the Mobile terminal main board, connects the radiator and ground, makes the antenna work with feed circuit cooperation
Make in the second band limits；Third earthed circuit is set on the Mobile terminal main board, the radiator and ground is connected, with institute
Stating feed circuit cooperation makes the Antenna Operation in third band limits.
Preferably, the feed circuit is set on the Mobile terminal main board, including：First capacitance, one end with it is described
Feed end connects, other end ground connection；Second capacitance, one end are connect with the feed end, and the other end is connect with the radiator；
First inductance, one end and one end of second capacitance are simultaneously connect after connecing with the radiator, and the other end is grounded.
Preferably, first capacitance is tunable capacitor.
Preferably, first earthed circuit is conductive metal band or metal strip, described in empty regions connection
Earth point on Mobile terminal main board and the radiator.
Preferably, second earthed circuit includes：First switching switch includes that first connect with the radiator is consolidated
Fixed end and at least two the first free ends switch first fixing end and one of them first free end in an ON state；
At least two group of first earth element, one end of first earth element connects one to one with first free end, another
End ground connection.
Preferably, the first switching switch is single-pole three-throw switch；First earth element is three groups.
Preferably, the third earthed circuit includes：Second switching switch includes that second connect with the radiator is consolidated
Fixed end and at least two the second free ends switch second fixing end and one of them second free end in an ON state；
At least two group of second earth element, one end of second earth element connects one to one with second free end, another
End ground connection.
Preferably, the second switching switch is single-pole three-throw switch；Second earth element is three groups.
The invention also discloses a kind of mobile terminals, including any of the above-described kind of antenna.
Preferably, the mobile terminal end is equipped with plastic strip, the embedded empty regions.
After using above-mentioned technical proposal, compared with prior art, have the advantages that：
1. realizing smaller empty regions, mobile terminal space is saved；
2. the multiple working frequency range of covering.
Description of the drawings
Fig. 1 is the structural schematic diagram for meeting the antenna of mobile terminal in one preferred embodiment of the utility model；
Fig. 2 is the antenna frequency response experimental result signal for meeting mobile terminal in one preferred embodiment of the utility model
Figure；
Fig. 3 is the antenna efficiency experimental result schematic diagram for meeting mobile terminal in one preferred embodiment of the utility model.
Reference numeral：
11- radiators, 12- feed ends, 13- feed circuits, the first capacitances of 131-, the second capacitances of 132-, the first electricity of 133-
Sense, 14 empty regions, the first earthed circuits of 15-；The second earthed circuits of 16-；The switchings of 161- first switch, 162- first are grounded member
Part, 17-- thirds earthed circuit, 171- second switch switch, the second earth elements of 172-, the first test curves of 18-, 19- second
Test curve, 20- third test curves.
Specific implementation mode
The advantages of the utility model is expanded on further below in conjunction with attached drawing and specific embodiment.
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all implementations consistent with this disclosure.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.
It is the purpose only merely for description specific embodiment in the term that the disclosure uses, is not intended to be limiting the disclosure.
The "an" of singulative used in disclosure and the accompanying claims book, " described " and "the" are also intended to including majority
Form, unless context clearly shows that other meanings.It is also understood that term "and/or" used herein refers to and wraps
Containing one or more associated list items purposes, any or all may be combined.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the disclosure
A little information should not necessarily be limited by these terms.These terms are only used for same type of information being distinguished from each other out.For example, not departing from
In the case of disclosure range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
In the description of the present invention, it should be understood that term " longitudinal direction ", " transverse direction ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached
Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indicates or imply
Signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to this
The limitation of utility model.
In the description of the present invention, unless otherwise specified and limited, it should be noted that term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, can also be the company inside two elements
It is logical, it can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill in the art, it can
To understand the concrete meaning of above-mentioned term as the case may be.
In subsequent description, using for indicating that the suffix of such as " module ", " component " or " unit " of element is only
Be conducive to the explanation of the utility model, itself there is no specific meanings.Therefore, " module " can be mixedly with " component "
It uses.
Refering to fig. 1, described to meet the structural schematic diagram of the antenna of mobile terminal in one preferred embodiment of the utility model
Mobile terminal has metal battery cover and metal edge frame.The mobile terminal designs for comprehensive screen, i.e., screen occupies nearly
One entire range, that is, " large-screen mobile phone " that is commonly called as.Back side disassembling shell of the mobile terminal relative to screen one side
The battery of the mobile terminal can be exposed after opening, therefore the back side shell is otherwise known as battery cover, described in the utility model
Back side shell is made of metal material, therefore referred to as metal battery cover.The metal battery cover is commonly used for the Mobile terminal main board
Earth point, be ideal ground plane, help the workpiece on the Mobile terminal main board, especially antenna realize compared with
Good performance.
Also there is the mobile terminal frame, the frame metal material can be used, and other materials, such as plastics also can be selected
Deng.The frame is usually used in laying the antenna of the mobile terminal around the narrow side one week of the mobile terminal, built in realization
Antenna Design.The radiator 11 of the antenna of the mobile terminal is laid along the inside of the frame, according to the demand of communication performance
It is designed as different geomeries, can also breakpoint be set according to different antenna functions, realizes multiple independent antenna element associations
Adjust work, such as mobile cellular network antenna element, GPS antenna unit, WIFI antenna elements etc..The antenna of the mobile terminal
It can be designed as supporting the different mobile cellular network standards such as GSM, WCDMA, LTE according to function needs.
The antenna includes：
Radiator 11
The radiator 11 supports the Antenna Operation in multiple frequency ranges for sending or receiving radio signal.Institute
It is antenna in the narrow sense to state radiator 11, it is a kind of converter, it is transformed into the signal propagated on wire medium unbounded
The electromagnetic wave propagated in medium (being typically free space), or carry out opposite transformation；It is to be used for sending out in wireless device
Penetrate or receive the component of electromagnetic wave.Radio communication, broadcast, TV, radar, navigation, electronic countermeasure, remote sensing, radio astronomy etc.
Engineering system, it is every to use electromagnetic waves to transmit information, antenna is depended on to work.Usual antenna all has reversible
Property, i.e., it both can be used as transmitting antenna with common antenna, it is also possible to make reception antenna；The same antenna is as transmitting or receives basic
Characterisitic parameter is identical；That is the reciprocal theorem of antenna.In the present embodiment, the intension of the antenna is richer than the antenna of narrow sense
Richness further comprises feed circuit 13 and feed end 12 with 11 cooperating of the radiator.The Antenna Operation is mobile logical
The frequency range of communication network, the multiple networks standard such as including 2G, 3G, 4G support the mobile terminal to carry out information exchange with external.Root
According to the difference of working frequency range and application scenario, the radiator 11 is designed to different constructions, such as in the mobile terminal
Interior radiator 11 then must accordingly be designed according to the construction features of mobile terminal, such as utilize the metal electricity of mobile terminal
Electromagnetic oscillation is realized in gap on Chi Gai and frame, realizes the miniaturization of radiator 11.For example the radiator 11 also can be by again
For the antenna of laboratory test, room environmental is designed fibrous root according to the experiment, the various frequency ranges needed for experiment can be covered, to ruler
Very little less-restrictive.
In the present embodiment, the radiator be set to the mobile terminal end, that is, the top of the mobile terminal or
Bottom end is connect by metal tape with the feed circuit 13 on the Mobile terminal main board.
Feed end 12
The feed end 12 is the signal input part or output end of the antenna, described when the antenna emits signal
Feed end 12 receives the electric signal that signal source is sent and forms radio signal hair by the feed circuit 13 and radiator 11
It is shot out；When the antenna receives signal, the wireless signal that the radiator 11 receives is converted to through the feed circuit 13
Electric signal, then other component is transmitted to by the feed end 12 and is handled.The feed end 12 often with radio frequency chip or base band
Chip connects, and handles the radiofrequency signal of reception, radiofrequency signal is converted to digital signal.The feed end 12 is set to institute
It states on Mobile terminal main board, signal transmission is carried out to be connect with other component on the Mobile terminal main board.
Feed circuit 13
The feed circuit 13 connects the radiator 11 and the feed end 12, by components such as resistance, capacitance, inductance
Composition can generate with the radiator 11 and shake and be sent in the form of an electromagnetic wave by the radiator 11, also may be used
Electric signal is converted to the wireless signal for receiving the radiator 11.Effect of the feed circuit 13 in the antenna be
Vital, without the feed circuit 13, the antenna can not just generate concussion, also just can not send or receive electromagnetic wave
Signal.The structure and electric parameter of the feed circuit 13 are different, can be impacted to its working frequency range, can also influence antenna
Performance, therefore the parameter by changing the component of the feed circuit can optimize adjustment to the performance of antenna.It is described
Feed circuit is frequently with the combination of L-type circuit, pi-network, L-type circuit and pi-network, the combination or two of two L-type circuits
The combination of a pi-network.
Empty regions 14
The empty regions 14 are set between the radiator 11 and the Mobile terminal main board, are slot-shaped, therefore have
There is the antenna of this slot-shaped empty regions 14 to be also referred to as slot type antenna, takes full advantage of the metal portion of the mobile terminal
Part realizes electromagnetic oscillation.The effect of the empty regions 14 is to make the radiator 11 and others in the mobile terminal
Metal parts maintains a certain distance, and other component work is neither influenced when ensureing the Antenna Operation, also not by other portions
Part is influenced.The size of the empty regions 14 is bigger, it is meant that the radiator 11 is got at a distance from other metal parts
Far, interference just becomes smaller, and the performance of antenna is also better.
The width of empty regions 14 described in the prior art, that is, the radiator 11 and the Mobile terminal main board
At least 3 millimeters of distance, causes difficulty to the space structure design of mobile terminal, has tied up the space of other component.This reality
In novel, the width of the empty regions 14 is not more than 3 millimeters, remains to keep preferable antenna performance, has saved mobile end
The structure space at end.
- the first earthed circuit 15
First earthed circuit 15 is set on the Mobile terminal main board, connects the radiator 11 and ground, and described
The cooperation of feed circuit 13 makes the Antenna Operation in the first band limits.In the present embodiment, first earthed circuit 15 can be with
It is conductive metal band or metal strip, does not contain other any electronic components, that is, the radiator 11 is made to be directly grounded.Institute
It states metal tape or metal strip and connects earth point on the Mobile terminal main board and the radiator 11 across the empty regions.
First band limits is the low-frequency range at mobile communication end, about in 600MHz to 960MHz.
- the second earthed circuit 16
Second earthed circuit 16 is set on the Mobile terminal main board, connects the radiator 11 and ground, and described
The cooperation of feed circuit 13 makes the Antenna Operation in the second band limits.Second band limits is the intermediate frequency at mobile communication end
Section, about in 1700MHz to 2200MHz.
Third earthed circuit 17
The third earthed circuit 17 is set on the Mobile terminal main board, connects the radiator 11 and ground, and described
Feed circuit cooperation makes the Antenna Operation in third band limits.The third band limits is the high frequency at mobile communication end
Section, about in 2300MHz to 2700MHz.
As being further improved for the antenna, the feed circuit 13 is set on the Mobile terminal main board, including：
- the first capacitance 131
Wherein one end of first capacitance 131 is connect with the feed end 12, another termination of first capacitance 131
Ground.Further, first capacitance 131 be tunable capacitor, the tunable capacitor be based on antenna tunable techniques, the technology with
The capability value of variable capacity device in the embedded semiconductor chip of digital form adjustment, controls the resistance for the antenna that is connected with chip
Anti-, this capacitor is referred to as " DTC (digitally tunable Capacitor).By adjusting first capacitor
Capacitance can change the impedance matching property of the feed circuit 13, wider to make the working frequency range of the antenna cover.
- the second capacitance 132
Wherein one end of second capacitance 132 is connect with the feed end 12, the other end of second capacitance 132 with
The radiator 11 connects.As can be seen that first capacitance 131 be serially connected in the radiator 11 and the feed end 12 it
Between, and jointly and connect and the feed end 12 with first capacitance 131.
- the first inductance 133
Wherein one end of first inductance 133 and one end of second capacitance 132 simultaneously connect the rear and radiator 11
Connection, the other end ground connection of first inductance 133.First inductance 133 is connected to one jointly with second capacitance 132
Point, and the radiator 11 is extended to by conductive metal tape.
It sees on the whole, first capacitance 131, the second capacitance 132 and the first inductance 133 have collectively constituted pi-network.
As being further improved for the antenna, second earthed circuit 16 includes：
- the first switching switch 161
The first switching switch 161 include the first fixing end being connect with the radiator 11 and at least two first oneself
By holding, switch first fixing end and one of them first free end in an ON state.First switching, 161 energy of switch
It enough controls first fixing end to connect with one of them first free end respectively, realizes the unicom of two lateral circuits, be not connected
The first free end in vacant state.The first switching switch 161 can be single-pole double-throw switch (SPDT), single-pole three-throw switch etc.
Switching device with handoff functionality.
- the first earth element 162
At least two groups of first earth element 162, the quantity with the first free end of the first switching switch 161
It corresponds.The first free end that one end of first earth element 162 is corresponding connects, first earth element
162 other end ground connection.First earth element 162 can be the matching elements such as inductance, capacitance or resistance, different first
The parameter of earth element 162 is different, to support different Antenna Operation frequency ranges.
In this improvement embodiment, second earthed circuit 16 becomes that the radiator 11 can be allowed to select is different
The earthed circuit of first earth element 162 ground connection, allows the antenna to cover more working frequency range, especially to Mid Frequency
Coverage rate is preferable.
The third earthed circuit 17 includes：
- the second switching switch 171
The second switching switch 171 include the second fixing end being connect with the radiator 11 and at least two second oneself
By holding, switch second fixing end and one of them second free end in an ON state.Second switching, 171 energy of switch
It enough controls second fixing end to connect with one of them second free end respectively, realizes the unicom of two lateral circuits, be not connected
The second free end in vacant state.The second switching switch 171 can be single-pole double-throw switch (SPDT), single-pole three-throw switch etc.
Switching device with handoff functionality.
- the second earth element 172
At least two groups of second earth element 172, the quantity with the second free end of the second switching switch 171
It corresponds.The second free end that one end of second earth element 172 is corresponding connects, second earth element
172 other end ground connection.Second earth element 172 can be the matching elements such as inductance, capacitance or resistance, different second
The parameter of earth element 172 is different, to support different Antenna Operation frequency ranges.
In this improvement embodiment, the third earthed circuit 17 becomes that the radiator 11 can be allowed to select is different
The earthed circuit of second earth element 172 ground connection, allows the antenna to cover more working frequency range, especially to high band
Coverage rate is preferable.
Further, the first switching switch 161 is single-pole three-throw switch；First earth element 162 is three groups.
The second switching switch 171 is single-pole three-throw switch；Second earth element 172 is three groups.In this improvement embodiment, institute
It states the second earthed circuit 16 and third earthed circuit 17 and three kinds of different earth elements may be selected respectively, there is flexibility, it can root
Suitable earth element is selected according to need of work, makes the antenna that there is preferable working frequency range covering power, is realized preferable
Antenna performance.
Specifically, the first switching switch 161 and second switches the hilted broadsword that switch 171 is microelectromechanical processes and throws out more
It closes.Microelectromechanical processes are the hot topics of manufacturing technology development in recent years, and the equipment or component produced is also referred to as micro-electro-mechanical systems
System, English abbreviation MEMS, full name in English Micro-Electro-Mechanical System.The MEMS is also referred to as
Microelectromechanical systems, micro-system, micromechanics etc., refer to size at several millimeters or even smaller high-tech device, MEMS
Its internal structure is generally an independent intelligence system in micron even nanometer scale.MEMS is in microelectronics skill
Grow up on the basis of art (semiconductor fabrication), it is micro- to have merged photoetching, burn into film, LIGA, silicon micromachined, non-silicon
The high-tech electronic mechanical devices that the technologies such as processing and precision machinery processing make.Due to the free space in the mobile terminal
Resource is nervous, therefore it is small to use the component of microelectromechanical processes production to have the advantages that, such switching switch is also claimed
For mems switch.The concept of mems switch is suggested at initial stage nineties phase late 1980s, to Radio Frequency Engineer
With huge attraction, their potentiality include reducing the gross area, power consumption and the device cost of chip.Common mems switch
There are single-pole three throw (SP3T) mems switch of model HMC245A, the also characteristic with electrostatic protection, compare radio-frequency relay,
The volume-diminished of mems switch up to 95%, reliability promote 10 times, and speed promotes 30 times, 10 times of lower power consumption.
Referring to Fig.2, to meet the antenna frequency response experimental result of mobile terminal in one preferred embodiment of the utility model
Schematic diagram illustrates the antenna of the mobile terminal respectively in the frequency response characteristic of different frequency range.Abscissa is frequency in Fig. 2
Rate covers all working band limits of the mobile terminal from 600MHz to 3100MHz.3 curves are illustrated in Fig. 2,
Test result of the respectively described antenna under different conditions, that is, adjust first capacitance 131 and first switching is opened
It closes 161 and second and switches switch 171, the antenna is made to be suitable for different band limits.First test curve 18 is void
Line has amplitude fading near low-frequency range 860MHz, maintains -5dB or more in Mid Frequency and high band, the antenna under the state
With preferable Mid Frequency and high band performance.Second test curve 19 is solid line, has width near Mid Frequency 1900MHz
Degree decline, -5dB or more is maintained in low-frequency range and high band, and the antenna under the state has preferable low-frequency range and high band
Performance.The third test curve 20 is dotted line, has amplitude fading near high band 2400MHz, in low-frequency range and intermediate frequency
Section maintains -5dB or more, and the antenna under the state has preferable low-frequency range and Mid Frequency performance.To sum up, the antenna can root
It is adjusted to different working conditions according to different working forms, realizes preferable working frequency range covering.
In the present embodiment, low-frequency range working characteristics is generated by the first earthed circuit 16, by adjusting first capacitance
131, low-frequency range all standing may be implemented；It is special that Mid Frequency work is generated with the feed circuit 13 and the second earthed circuit 16
Property, Mid Frequency can be covered by switching switch 161 by described first；With the feed circuit 13 and third earthed circuit 17
High band operation characteristic is generated, high band can be covered by switching switch 171 by described second.Thus scheme realizes that the whole network is logical,
And it is efficient, required empty regions are less, fully meet instantly the requirement of screen mobile terminal antenna comprehensively.
Refering to Fig. 3, to meet the antenna efficiency experimental result signal of mobile terminal in one preferred embodiment of the utility model
Figure, from figure 3, it can be seen that the utility model antenna is about 30%~40% in the efficiency of low-frequency range, in the efficiency of Mid Frequency
About 50%~60%, it is about 60% or so in the efficiency of high band, realizes preferable full frequency band covering.
The invention also discloses a kind of mobile terminals, including any of the above-described kind of antenna.The mobile terminal can be with
Various forms is implemented.For example, the terminal described in the utility model may include such as mobile phone, smart phone, notes
This computer, PDA (personal digital assistant), PAD (tablet computer), PMP (portable media player), navigation device etc.
The fixed terminal of mobile terminal and such as number TV, desktop computer etc..Hereinafter it is assumed that terminal is mobile terminal.However,
It will be appreciated by those skilled in the art that other than being used in particular for the element of mobile purpose, implementation according to the present utility model
The construction of mode can also apply to the terminal of fixed type.
The mobile terminal is preferably the mobile terminal for having and shielding comprehensively, i.e. screen covers the face of nearly one entire screen
Product.It is preferable to use the shells of metal material, i.e. metal battery cover at the screen corresponding back side, to coordinate Antenna Operation.
Further, the end of the mobile terminal is equipped with plastic strip, the embedded empty regions 14.Due to the radiation
It is equipped with gap-shaped empty regions 14 between body 11 and the Mobile terminal main board, there cannot be metal portion in the empty regions 14
Part, therefore selection is filled using plastic strip, ensures that the appearance of the mobile terminal is full, beautiful, and it is dry not will produce electromagnetism
It disturbs.
It should be noted that the embodiments of the present invention have preferable implementation, and not the utility model is appointed
The limitation of what form, any one skilled in the art change or are modified to possibly also with the technology contents of the disclosure above
Same effective embodiment, as long as without departing from the content of technical solutions of the utility model, according to the technical essence of the utility model pair
Any modification or equivalent variations and modification, are still within the scope of the technical solutions of the present invention made by above example.
Claims (10)
1. a kind of antenna of mobile terminal, it includes being set to the movement that the mobile terminal, which has metal battery cover, the antenna,
The feed of the radiator of terminal end, the feed end on the Mobile terminal main board and the connection radiator and feed end
Circuit is equipped with gap-shaped empty regions between the radiator and the Mobile terminal main board, which is characterized in that
The width of the empty regions is not more than 3 millimeters；
The antenna includes：
First earthed circuit is set on the Mobile terminal main board, connects the radiator and ground, is coordinated with the feed circuit
Make the Antenna Operation in the first band limits；
Second earthed circuit is set on the Mobile terminal main board, connects the radiator and ground, is coordinated with the feed circuit
Make the Antenna Operation in the second band limits；
Third earthed circuit is set on the Mobile terminal main board, connects the radiator and ground, is coordinated with the feed circuit
Make the Antenna Operation in third band limits.
2. antenna as described in claim 1, which is characterized in that
The feed circuit is set on the Mobile terminal main board, including：
First capacitance, one end are connect with the feed end, other end ground connection；
Second capacitance, one end are connect with the feed end, and the other end is connect with the radiator；
First inductance, one end and one end of second capacitance are simultaneously connect after connecing with the radiator, and the other end is grounded.
3. antenna as claimed in claim 2, which is characterized in that
First capacitance is tunable capacitor.
4. antenna as described in any one of claims 1-3, which is characterized in that
First earthed circuit is conductive metal band or metal strip, and the Mobile terminal main board is connected across the empty regions
On earth point and the radiator.
5. antenna as described in any one of claims 1-3, which is characterized in that
Second earthed circuit includes：
First switching switch, includes the first fixing end being connect with the radiator and at least two the first free ends, switches institute
State the first fixing end and one of them first free end in an ON state；
At least two group of first earth element, one end of first earth element connect one to one with first free end,
The other end is grounded.
6. antenna as claimed in claim 5, which is characterized in that
The first switching switch is single-pole three-throw switch；
First earth element is three groups.
7. antenna as described in any one of claims 1-3, which is characterized in that
The third earthed circuit includes：
Second switching switch, includes the second fixing end being connect with the radiator and at least two the second free ends, switches institute
State the second fixing end and one of them second free end in an ON state；
At least two group of second earth element, one end of second earth element connect one to one with second free end,
The other end is grounded.
8. antenna as claimed in claim 7, which is characterized in that
The second switching switch is single-pole three-throw switch；
Second earth element is three groups.
9. a kind of mobile terminal, is characterized in that, including antenna as described in claim 1.
10. mobile terminal as claimed in claim 9, which is characterized in that
The mobile terminal end is equipped with plastic strip, the embedded empty regions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721875248.8U CN207705379U (en) | 2017-12-28 | 2017-12-28 | A kind of antenna of mobile terminal and the mobile terminal with the antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721875248.8U CN207705379U (en) | 2017-12-28 | 2017-12-28 | A kind of antenna of mobile terminal and the mobile terminal with the antenna |
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| Publication Number | Publication Date |
|---|---|
| CN207705379U true CN207705379U (en) | 2018-08-07 |
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| CN201721875248.8U Active CN207705379U (en) | 2017-12-28 | 2017-12-28 | A kind of antenna of mobile terminal and the mobile terminal with the antenna |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959103A (en) * | 2017-12-28 | 2018-04-24 | 上海传英信息技术有限公司 | A kind of antenna of mobile terminal and the mobile terminal with the antenna |
| CN110429394A (en) * | 2019-07-26 | 2019-11-08 | 深圳市万普拉斯科技有限公司 | Anneta module and mobile terminal |
| CN110858682A (en) * | 2017-08-24 | 2020-03-03 | 联发科技股份有限公司 | Wireless communication method and device |
| CN111509386A (en) * | 2020-05-13 | 2020-08-07 | 展讯通信（上海）有限公司 | Antenna device and terminal equipment |
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2017
- 2017-12-28 CN CN201721875248.8U patent/CN207705379U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110858682A (en) * | 2017-08-24 | 2020-03-03 | 联发科技股份有限公司 | Wireless communication method and device |
| CN110858682B (en) * | 2017-08-24 | 2021-09-17 | 联发科技股份有限公司 | Wireless communication method and device |
| US11289811B2 (en) | 2017-08-24 | 2022-03-29 | Mediatek Inc. | Closed-loop antenna with multiple grounding points |
| CN107959103A (en) * | 2017-12-28 | 2018-04-24 | 上海传英信息技术有限公司 | A kind of antenna of mobile terminal and the mobile terminal with the antenna |
| CN110429394A (en) * | 2019-07-26 | 2019-11-08 | 深圳市万普拉斯科技有限公司 | Anneta module and mobile terminal |
| CN111509386A (en) * | 2020-05-13 | 2020-08-07 | 展讯通信（上海）有限公司 | Antenna device and terminal equipment |
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