CN108134202A - Antenna tuning circuit and mobile terminal - Google Patents
Antenna tuning circuit and mobile terminal Download PDFInfo
- Publication number
- CN108134202A CN108134202A CN201711360970.2A CN201711360970A CN108134202A CN 108134202 A CN108134202 A CN 108134202A CN 201711360970 A CN201711360970 A CN 201711360970A CN 108134202 A CN108134202 A CN 108134202A
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- switch
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- distributing point
- circuit
- match circuit
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- 230000005855 radiation Effects 0.000 abstract description 11
- 239000006185 dispersion Substances 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- 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
- 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
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
-
- 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
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
-
- 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
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
Abstract
This application discloses a kind of antenna tuning circuit and mobile terminal, antenna tuning circuit includes：Antenna, the first match circuit, the second match circuit, first switch, second switch, radio-frequency signal transceiver and third switch；The antenna includes the first distributing point and the second distributing point；First match circuit and the first switch are connected between first distributing point and ground, and second match circuit and the second switch are connected between second distributing point and ground；The radio-frequency signal transceiver is connected with third switch；When working frequency range is in low frequency, the third switching is to first distributing point, the radiofrequency signal of the radio-frequency signal transceiver transmitting reaches the antenna by first distributing point, the first switch disconnects, the second switch is connected, and the frequency range in the third band limits is less than the frequency range in second band limits.Radiation dispersion can inhibit using the embodiment of the present application.
Description
Technical field
This application involves electronic technology field more particularly to a kind of antenna tuning circuits and mobile terminal.
Background technology
Forcible authentication index of the radiation dispersion as current electronic equipment (such as smart mobile phone etc.), is in all certifications
A problem that is most complicated, being difficult to resolve the most.Particularly global system for mobile communications (Global System for Mobile
Communication, GSM) frequency range, because the power of GSM in itself is higher, it is easy in the energy that moment excitation has by force so as to lead
Cause the harmonic excess of radiation dispersion.In practical engineering, mainly the triple-frequency harmonics of GSM900, GSM1800 second harmonic
Or GSM1800 triple-frequency harmonics is exceeded.
For radiofrequency signal, the signal that we emit can not only include available signal (such as GSM900), toward contact
The ingredient of second harmonic (such as 1800GHz) or triple-frequency harmonics (such as 2700GHz) can be included.It is most of in practical engineering
It is exceeded to be that triple-frequency harmonics will appear.It, will be by these at the resonance three times of the triple-frequency harmonics energy arrival antenna of radiofrequency signal
Useless harmonic energy is radiate, so as to cause spuious exceeded.
Invention content
The embodiment of the present application provides a kind of antenna tuning circuit and mobile terminal, for eliminating under low frequency operation, feed
The high voltage of point leads to the situation of tuning switch saturation, and then inhibit radiation dispersion.
In a first aspect, the embodiment of the present application provides a kind of antenna tuning circuit, including antenna, the first match circuit, second
Match circuit, first switch, second switch, radio-frequency signal transceiver and third switch；
The antenna includes the first distributing point and the second distributing point；First match circuit is connected with the first switch
Between first distributing point and ground, second match circuit and the second switch be connected on second distributing point with
Between ground；The radio-frequency signal transceiver is connected with third switch；
When working frequency range is in the first band limits, the third switching to the first switch, the radio frequency
The radiofrequency signal of signal transceiver transmitting reaches the antenna radiator by the first switch, and the second switch is led
Logical, the first switch disconnects or conducting；
When working frequency range is in the second band limits, the third switching to the first switch, the radio frequency
The radiofrequency signal of signal transceiver transmitting reaches the antenna radiator by the first switch, and the first switch is connected,
The second switch disconnects, and the frequency range in second band limits is less than the frequency range in first band limits；
When working frequency range is in third band limits, the third switching is described to penetrate to first distributing point
The radiofrequency signal of frequency signal transceiver transmitting reaches the antenna radiator by first distributing point, and the first switch is broken
It opens, the second switch conducting, the frequency range in the third band limits is less than the frequency range in second band limits.
Second aspect, the embodiment of the present application provide a kind of mobile terminal, the antenna tuning circuit provided including first aspect.
As can be seen that in the embodiment of the present application, increase a selecting switch, under low frequency operation, the selection switch with
First distributing point is directly connected to, and first switch disconnects, and the radiofrequency signal of radio-frequency signal transceiver transmitting is switched by the selection, the
One distributing point and antenna radiator directly radiate low frequency energy.As it can be seen that low frequency and high frequency are realized by selecting switch
Separately selection, can eliminate under low frequency operation in this way, and the high voltage of the first distributing point leads to the situation of tuning switch saturation, and then
Inhibit radiation dispersion.
These aspects or other aspects of the application can more straightforward in the following description.
Description of the drawings
In order to illustrate more clearly of the technical solution in the embodiment of the present application or background technology, the application will be implemented below
Attached drawing illustrates needed in example or background technology.
Fig. 1 is a kind of schematic diagram of the tuning circuit of slot antenna provided by the embodiments of the present application；
Fig. 2 is a kind of schematic diagram of antenna tuning circuit provided by the embodiments of the present application；
Fig. 3 is that the embodiment of the present application provides a kind of partial schematic diagram of antenna tuning circuit；
Fig. 4 is the schematic diagram of another antenna tuning circuit provided by the embodiments of the present application；
Fig. 5 is the schematic diagram of another antenna tuning circuit provided by the embodiments of the present application；
Fig. 6 is that the embodiment of the present application provides a kind of structure diagram of mobile terminal；
Specific embodiment
In order to which those skilled in the art is made to more fully understand the present invention program, below in conjunction in the embodiment of the present invention
The technical solution in the embodiment of the present invention is clearly and completely described in attached drawing, it is clear that described embodiment is only
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without creative efforts shall fall within the protection scope of the present invention.
Term " first ", " second " in description and claims of this specification and above-mentioned attached drawing etc. are for distinguishing
Different objects rather than for describing particular order.In addition, term " comprising " and " having " and their any deformations, it is intended that
It is to cover non-exclusive include.Such as it contains process, system, product or the equipment of series of steps or unit and does not limit
In listed the step of or unit, but optionally further include the step of not listing or unit or optionally further include for
Other intrinsic steps of these processes, product or equipment or unit.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
Containing at least one embodiment of the present invention.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
Mobile terminal involved by the embodiment of the present invention can include the various handheld devices with wireless communication function,
Mobile unit, wearable device, computing device or other processing equipments and various forms for being connected to radio modem
User equipment (User Equipment, UE), mobile station (Mobile Station, MS), terminal device (terminal
Device) etc..For convenience of description, apparatus mentioned above is referred to as mobile terminal.
Fig. 1 is a kind of schematic diagram of the tuning circuit of slot antenna provided by the embodiments of the present application, referring to Fig. 1, the antenna
Tuning circuit include antenna, distributing point, main power feed point, two tuning switch and two match circuits.Ground distributing point and master
Two tuning switch of distributing point connection are mainly used for adjusting medium-high frequency.The operation principle of the tuning circuit of the slot antenna is main
It is the switching that different frequency range is realized by two tuning switch and two match circuits.
As shown in Figure 1, main power feed point is grounded by tuning switch, when medium-high frequency (if the frequency that antenna size itself is supported
Section is 900 megahertzs of GSM, then medium-high frequency refers to that the frequency range more than 900 megahertzs of GSM, such as medium-high frequency have GSM1800
Megahertz, GSM1900 megahertzs etc..The frequency range that if antenna size itself is supported again is 1800 megahertzs of GSM, then middle height
Frequency refers to the frequency range more than 1800 megahertzs of GSM, for example, medium-high frequency have GSM1900 megahertzs when) work when, pass through matching
Circuit and tuning switch switch to the corresponding matching of medium-high frequency so that Antenna Operation is in medium-high frequency, thus by medium-high frequency energy spoke
It is shot out.When low frequency (if antenna size itself support frequency range be 900 megahertzs of GSM, then low frequency refer to being less than or
Frequency range of 900 megahertzs equal to GSM, and if the frequency range of antenna size support itself is GSM1800, then high frequency refers to
Frequency range of 1800 megahertzs less than or equal to GSM) work when, since antenna size itself is just designed in low frequency band, nothing
The tuning switch at main power feed point need to be used, low frequency energy directly from main power feed point conduct and then be radiated.For gap day
Line, in low frequency operation, main power feed point is to radiate low frequency energy in a manner that electric field is fierce, in this way in main power feed
Point has and its powerful voltage signal, high voltage can lead to the tuning switch saturation of main power feed point, and then lead to radiation dispersion
It is exceeded.
In view of the above-mentioned problems, referring to Fig. 2, Fig. 2 is that the embodiment of the present application provides a kind of schematic diagram of antenna tuning circuit,
The antenna tuning circuit includes：Antenna 10, the first match circuit 20, the second match circuit 30, first switch 40, second switch
50th, radio-frequency signal transceiver 60 and third switch 70；
Antenna 10 includes the first distributing point 11 and the second distributing point 12；First match circuit 20 is connected with first switch 40
Between the first distributing point 11 and ground, the second match circuit 30 and second switch 50 are connected between the second distributing point 12 and ground；
Radio-frequency signal transceiver 60 is connect with third switch 70；
When working frequency range is in the first band limits, third switch 70 switches to first switch 40, radiofrequency signal transmitting-receiving
The radiofrequency signal that device 60 emits reaches antenna 10 by first switch 40, first switch 40 and second switch 50 be both turned on or
First switch 40 disconnects, and second switch 50 is connected；
When working frequency range is in the second band limits, third switch 70 switches to first switch 40, radiofrequency signal transmitting-receiving
The radiofrequency signal that device 60 emits reaches antenna 10 by first switch 40, and first switch 40 is connected, and second switch 50 disconnects, and second
Frequency range in band limits is less than the frequency range in the first band limits；
When working frequency range is in third band limits, third switch 70 switches to the first distributing point 11, and radiofrequency signal is received
The radiofrequency signal that hair device 60 emits reaches antenna 10 by the first distributing point 11, and first switch 40 disconnects, second switch conducting, institute
The frequency range that the frequency range in third band limits is less than in second band limits is stated, which is radio-frequency signal transceiver
The frequency range of the radiofrequency signal of 60 transmittings.
Wherein, the frequency range in third band limits can be less than or equal to 850 megahertzs of GSM, less than or equal to GSM
900 megahertzs or less than or equal to 1800 megahertzs of GSM etc., then this is not construed as limiting.
Wherein, the frequency range in the second band limits can be the frequency range in 850 megahertzs or so of GSM, and more than GSM
850 megahertzs, the frequency range in 900 megahertzs or so of GSM, and more than 900 megahertzs of GSM or on a GSM1800 megahertzs of left side
Right frequency range, and more than 1800 megahertzs of GSM etc., then this is not construed as limiting.
Wherein, the frequency range in the first band limits can be the frequency range in 1700 megahertzs or so of GSM, and be more than
GSM1700 megahertzs or in GSM1800 megahertzs or so of frequency range, and more than 1800 megahertzs of GSM etc., then this does not make
It limits.
Wherein, radio-frequency signal transceiver 60 has 850 megahertzs as original signal source, the frequency range of the radiofrequency signal usually emitted
Hereby, it is one or more in 900 megahertzs, 1800 megahertzs, 1900 megahertzs etc..Mobile terminal can be in these band limits
Frequency is automatically switched according to network coverage situation, to ensure best using effect.
Wherein, antenna 10 is a kind of converter, it is transformed into the guided wave propagated on transmission line (logical in unbounded medium
Often free space) in the electromagnetic wave propagated or carry out opposite transformation.Antenna is for emitting or connecing in the terminal
Receive the component of electromagnetic wave.The engineering departments such as radio communication, broadcast, TV, radar, navigation, electronic countermeasure, remote sensing, radio astronomy
System, it is every to use electromagnetic waves to transmit information, antenna is depended on to work.In addition, transmitting energy side with electromagnetic wave
Face, the energy radiation of non-signal are also required to antenna.General antenna all has invertibity, i.e. the same antenna both can be used as emitting day
Line, it is also possible to make reception antenna.The same antenna is identical as transmitting or the fundamental characteristics parameter received.
Wherein, first switch 40, second switch 50 are tuning switch.
Wherein, the first distributing point 11 is main distributing point, the second distributing point 12 is ground distributing point.
Wherein, the first distributing point 11 is placed in the end point of antenna 10.It is specific as shown in Figure 2.
As can be seen that in the embodiment of the present application, increase a selecting switch, under low frequency operation, the selection switch with
First distributing point is directly connected to, and first switch disconnects, and the radiofrequency signal of radio-frequency signal transceiver transmitting is switched by the selection, the
One distributing point and antenna radiator directly radiate low frequency energy.As it can be seen that low frequency and high frequency are realized by selecting switch
Separately selection, can eliminate under low frequency operation in this way, and the high voltage of the first distributing point leads to the situation of tuning switch saturation, and then
Inhibit radiation dispersion.
In the embodiment of the application, the first match circuit 20 includes M matching sub-circuit, and the second match circuit 30 includes
N number of matching sub-circuit, M and N are positive integer.
Further, when working frequency range is in the first band limits, at least one of N number of matching sub-circuit matching
Circuit turn-on；Alternatively, in the matching sub-circuit conducting of at least one of N number of matching sub-circuit and described M matching sub-circuit
At least one matching sub-circuit conducting.
Further, when working frequency range is in the second band limits, M matches at least one of sub-circuit matching
Circuit turn-on.
Further, when working frequency range is in third band limits, M matches at least one of sub-circuit matching
Circuit turn-on.
It should be noted that when at least one matching sub-circuit conducting, at least one matching sub-circuit access antenna,
To adjust the impedance of antenna so that the impedance of antenna is matched with the feed line impedance of distributing point, so that antenna tuning circuit work
Make in impedance matching condition.Matching sub-circuit can not only adjust the working frequency of antenna in high frequency, can also adjust antenna
Tuning circuit is in impedance matching condition.
In addition, matching sub-circuit can be single original paper, such as inductance or capacitance, it can also be by an inductance and two electricity
Hold composition π types match circuit or labyrinth, such as frequency electing and passing circuit, can also be other with identity function
Circuit, in addition without enumerating.Wherein, frequency electing and passing circuit can be equivalent to short circuit in low-frequency range, in high band etc.
It imitates in inductance or capacitance.In addition, the impedance of Different matching sub-circuit is different.Specifically, the structure of matching sub-circuit can refer to
Fig. 3, Fig. 3 are that the embodiment of the present application provides a kind of partial schematic diagram of antenna tuning circuit.
In the embodiment of the application, the matching sub-circuit of the first match circuit 20 is GSM850 megahertzs or 900 megahertzs
Hereby frequency band match sub-circuit, the matching sub-circuit of the second match circuit 30 is GSM1800 megahertzs of frequency band match sub-circuit.
In the embodiment of the application, the first match circuit 20 is connect with first switch 40 and the first match circuit 20
It is connect by the first distributing point 11 with antenna 10；Second match circuit 30 is connect with second switch 50 and the second match circuit
30 are connect by the second distributing point 12 with antenna 10.It is specific as shown in Figure 2.
In the embodiment of the application, the first match circuit 20 is connect with first switch 40 and first switch 40 passes through
First distributing point 11 is connect with antenna 10；Second match circuit 30 is connect with second switch 50 and second switch 50 is by
Two distributing points 12 are connect with antenna 10.It is specific as shown in Figure 4.
In the embodiment of the application, the distance of the first distributing point 11 and the second distributing point 12 be greater than or equal to setting away from
From.
Specifically, due in low frequency operation, the first distributing point 11 be in a manner that electric field is fierce by low frequency energy into
Row radiation, it is had and its powerful voltage signal in the first distributing point 11 in this way, therefore in order to avoid high voltage leads to second
The situation of 50 saturations is switched, the first distributing point 11 and the second distributing point 11 need to be maintained a certain distance.
Wherein, setpoint distance be research staff by test of many times obtain in the first distributing point 11 and the second distributing point 11
Distance be greater than or equal to the value when, second switch 50 is not in the situation of saturation.The setpoint distance is less than the length of antenna.
In the embodiment of the application, the distance of the first distributing point 11 and the second distributing point 11 is less than setpoint distance, and second
It connects between the matching sub-circuit of match circuit 30 and second switch 50 wave filter, the wave filter is described corresponding for retaining
The harmonic wave that the dominant frequency signal and filtering second switch 50 of frequency range generate.The wave filter is low-pass filter.
Specifically, referring to Fig. 5, Fig. 5 is the schematic diagram of another antenna tuning circuit provided by the embodiments of the present application.By
In in low frequency operation, the first distributing point 11 is to radiate low frequency energy in a manner that electric field is fierce, in this way the
One distributing point 11 has and its powerful voltage signal.The distance of the first distributing point 11 and the second distributing point 12 be less than setting away from
From in the case of, may still it be gone back there are the powerful voltage signal that the first distributing point 11 generates when reaching the second distributing point 12
It is to have powerful voltage signal, may result in 50 saturation of second switch in this way and lead to the problem of radiation dispersion, therefore in order to keep away
Exempt from this kind of situation to occur, in matching sub-circuit one low-pass filter of series connection of the second match circuit 30, so that even if
Harmonic wave is generated at second switch 50, which can also filter out, and further solve the problems, such as radiation dispersion.
In the embodiment of the application, first switch 40 is arbitrary in single-pole double throw, single-pole three throw and hilted broadsword four-throw
One kind, second switch 50 are any one in single-pole double throw, single-pole three throw and hilted broadsword four-throw.
In the embodiment of the application, the antenna tuning circuit further includes control module 70, first switch 40 and second
Switch 50 is connect with control module 70, and first switch 40 and second switch 50 are used to receive the switch from control module 70
In the case of logic control signal, sub-circuit is matched based on switching logic control signal behavior accordingly.
Fig. 6 is referred to, Fig. 6 is that the embodiment of the present application provides a kind of mobile terminal, which includes above-mentioned each implementation
Antenna tuning circuit described in example.
As shown in fig. 6, mobile terminal provided by the embodiments of the present application is due to including the antenna tune described in the various embodiments described above
Humorous circuit, therefore mobile terminal equally has the advantageous effect identical with antenna tuning circuit.It should be noted that the movement is whole
End further includes other components that the mobile terminal is supported to work normally, such as further includes touching display screen, processor, memory
Etc..
The said goods can perform the antenna tuning circuit that the application any embodiment is provided, and it is corresponding to have execution method
Function module and advantageous effect.The not technical detail of detailed description in the present embodiment, reference can be made to the application any embodiment institute
The antenna tuning circuit of offer.
It should be noted that above-mentioned is only the preferred embodiment of the application and institute's application technology principle.Art technology
Personnel can be carried out various for a person skilled in the art it will be appreciated that the application is not limited to specific embodiment described here
The protection domain for significantly changing, readjusting and substituting without departing from the application.Therefore, although passing through above example pair
The application is described in further detail, but the application is not limited only to above example, is not departing from the application design
In the case of, other more equivalent embodiments can also be included, and scope of the present application is determined by scope of the appended claims.
Claims (10)
1. a kind of antenna tuning circuit, which is characterized in that opened including antenna, the first match circuit, the second match circuit, first
Pass, second switch, radio-frequency signal transceiver and third switch；
The antenna includes the first distributing point and the second distributing point；First match circuit is connected on institute with the first switch
It states between the first distributing point and ground, second match circuit is connected on second distributing point and ground with the second switch
Between；The radio-frequency signal transceiver is connected with third switch；
When working frequency range is in the first band limits, the third switching to the first switch, the radiofrequency signal
The radiofrequency signal of Transceiver Transmit reaches the antenna by the first switch, and the second switch conducting, described first opens
Pass is turned on or off；
When working frequency range is in the second band limits, the third switching to the first switch, the radiofrequency signal
The radiofrequency signal of Transceiver Transmit reaches the antenna by the first switch, and the first switch conducting, described second opens
Shutdown is opened, and the frequency range in second band limits is less than the frequency range in first band limits；
When working frequency range is in third band limits, the third switching to first distributing point, the radio frequency letter
The radiofrequency signal of number Transceiver Transmit reaches the antenna by first distributing point, and the first switch disconnects, and described the
Two switch conductions, the frequency range in the third band limits are less than the frequency range in second band limits.
2. antenna tuning circuit according to claim 1, which is characterized in that first match circuit is opened with described first
Connection connects and first match circuit is connect by first distributing point with the antenna；Second match circuit
It is connect with the second switch and second match circuit is connect by second distributing point with the antenna.
3. antenna tuning circuit according to claim 1, which is characterized in that first match circuit is opened with described first
Connection connects and the first switch is connect by first distributing point with the antenna；Second match circuit and institute
It states second switch connection and the second switch is connect by second distributing point with the antenna.
4. according to claim 1-3 any one of them antenna tuning circuits, which is characterized in that first match circuit includes
M matching sub-circuit, second match circuit include N number of matching sub-circuit, and the M and the N are positive integer.
5. according to claim 1-4 any one of them antenna tuning circuits, which is characterized in that first distributing point is placed in institute
State the end point of antenna radiator.
6. antenna tuning circuit according to claim 5, which is characterized in that first distributing point and the described second feed
The distance of point is greater than or equal to setpoint distance.
7. antenna tuning circuit according to claim 5 or 6, which is characterized in that first distributing point and described second
The distance of distributing point is less than the setpoint distance, is gone here and there between the matching sub-circuit and the second switch of second match circuit
Join wave filter, the wave filter is used for the dominant frequency signal for retaining the corresponding band and filters the humorous of the second switch generation
Wave.
8. according to claim 1-7 any one of them antenna tuning circuits, which is characterized in that the first switch and described
Two switches are any one in single-pole double throw, single-pole three throw and hilted broadsword four-throw.
9. according to claim 1-8 any one of them antenna tuning circuits, which is characterized in that the antenna tuning circuit also wraps
Control module is included, the first switch and the second switch are connect with the control module, the first switch and described
Two switch for receive the switching logic from the control module control signal in the case of, based on the switching logic
Control signal behavior matches sub-circuit accordingly.
10. a kind of mobile terminal, which is characterized in that be integrated with such as claim 1-9 any one of them antenna tuning circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711360970.2A CN108134202B (en) | 2017-12-14 | 2017-12-14 | Antenna tuning circuit and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711360970.2A CN108134202B (en) | 2017-12-14 | 2017-12-14 | Antenna tuning circuit and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108134202A true CN108134202A (en) | 2018-06-08 |
| CN108134202B CN108134202B (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711360970.2A Expired - Fee Related CN108134202B (en) | 2017-12-14 | 2017-12-14 | Antenna tuning circuit and mobile terminal |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880603A (en) * | 2018-06-29 | 2018-11-23 | Oppo（重庆）智能科技有限公司 | Tuning switch module, antenna module and electronic equipment |
| CN109547047A (en) * | 2018-11-20 | 2019-03-29 | Oppo广东移动通信有限公司 | A kind of antenna tuning circuit and wireless telecom equipment |
| CN109755748A (en) * | 2019-01-21 | 2019-05-14 | 联想(北京)有限公司 | Electronic equipment |
| WO2019114622A1 (en) * | 2017-12-14 | 2019-06-20 | Oppo广东移动通信有限公司 | Antenna tuning circuit, antena apparatus and mobile terminal |
| CN110649391A (en) * | 2018-06-26 | 2020-01-03 | 苹果公司 | Electronic device antenna with switchable feed terminal |
| CN112086746A (en) * | 2020-09-04 | 2020-12-15 | Tcl通讯（宁波）有限公司 | Structure and method for expanding antenna bandwidth and mobile terminal |
| CN112134585A (en) * | 2019-06-05 | 2020-12-25 | 康希通信科技（上海）有限公司 | Multi-mode multi-frequency transceiver circuit |
| CN112310638A (en) * | 2019-07-31 | 2021-02-02 | 华为技术有限公司 | Wearable equipment |
| CN112968275A (en) * | 2021-02-03 | 2021-06-15 | 维沃移动通信有限公司 | Electronic device |
| CN113193336A (en) * | 2021-04-06 | 2021-07-30 | 深圳市广和通无线股份有限公司 | Antenna assembly and radio frequency control method |
| WO2022110309A1 (en) * | 2020-11-26 | 2022-06-02 | 捷开通讯(深圳)有限公司 | Antenna apparatus and mobile terminal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202004812U (en) * | 2010-12-01 | 2011-10-05 | 惠州Tcl移动通信有限公司 | Multi-antenna structure of mobile terminal |
| CN103579757A (en) * | 2012-07-24 | 2014-02-12 | 华为终端有限公司 | Method for changing operating frequency of antenna, antenna and terminal |
| US8854268B2 (en) * | 2011-12-20 | 2014-10-07 | Wistron Neweb Corporation | Tunable antenna and related radio-frequency device |
| CN104852148A (en) * | 2015-04-03 | 2015-08-19 | 青岛海信移动通信技术股份有限公司 | Tunable antenna and terminal |
| US9130279B1 (en) * | 2013-03-07 | 2015-09-08 | Amazon Technologies, Inc. | Multi-feed antenna with independent tuning capability |
| CN105633555A (en) * | 2016-01-25 | 2016-06-01 | 宇龙计算机通信科技(深圳)有限公司 | Antenna switching assembly, switching method, switching system, antenna and mobile terminal |
| CN107230822A (en) * | 2017-05-25 | 2017-10-03 | 努比亚技术有限公司 | Antenna assembly and mobile terminal |
-
2017
- 2017-12-14 CN CN201711360970.2A patent/CN108134202B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202004812U (en) * | 2010-12-01 | 2011-10-05 | 惠州Tcl移动通信有限公司 | Multi-antenna structure of mobile terminal |
| US8854268B2 (en) * | 2011-12-20 | 2014-10-07 | Wistron Neweb Corporation | Tunable antenna and related radio-frequency device |
| CN103579757A (en) * | 2012-07-24 | 2014-02-12 | 华为终端有限公司 | Method for changing operating frequency of antenna, antenna and terminal |
| US9130279B1 (en) * | 2013-03-07 | 2015-09-08 | Amazon Technologies, Inc. | Multi-feed antenna with independent tuning capability |
| CN104852148A (en) * | 2015-04-03 | 2015-08-19 | 青岛海信移动通信技术股份有限公司 | Tunable antenna and terminal |
| CN105633555A (en) * | 2016-01-25 | 2016-06-01 | 宇龙计算机通信科技(深圳)有限公司 | Antenna switching assembly, switching method, switching system, antenna and mobile terminal |
| CN107230822A (en) * | 2017-05-25 | 2017-10-03 | 努比亚技术有限公司 | Antenna assembly and mobile terminal |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019114622A1 (en) * | 2017-12-14 | 2019-06-20 | Oppo广东移动通信有限公司 | Antenna tuning circuit, antena apparatus and mobile terminal |
| US11205834B2 (en) | 2018-06-26 | 2021-12-21 | Apple Inc. | Electronic device antennas having switchable feed terminals |
| CN110649391A (en) * | 2018-06-26 | 2020-01-03 | 苹果公司 | Electronic device antenna with switchable feed terminal |
| CN110649391B (en) * | 2018-06-26 | 2022-01-25 | 苹果公司 | Electronic device antenna with switchable feed terminal |
| CN108880603A (en) * | 2018-06-29 | 2018-11-23 | Oppo（重庆）智能科技有限公司 | Tuning switch module, antenna module and electronic equipment |
| CN109547047A (en) * | 2018-11-20 | 2019-03-29 | Oppo广东移动通信有限公司 | A kind of antenna tuning circuit and wireless telecom equipment |
| CN109547047B (en) * | 2018-11-20 | 2021-03-26 | Oppo广东移动通信有限公司 | Antenna tuning circuit and wireless communication equipment |
| CN109755748A (en) * | 2019-01-21 | 2019-05-14 | 联想(北京)有限公司 | Electronic equipment |
| CN112134585B (en) * | 2019-06-05 | 2021-08-31 | 康希通信科技（上海）有限公司 | Multi-mode multi-frequency transceiver circuit |
| CN112134585A (en) * | 2019-06-05 | 2020-12-25 | 康希通信科技（上海）有限公司 | Multi-mode multi-frequency transceiver circuit |
| CN112310638A (en) * | 2019-07-31 | 2021-02-02 | 华为技术有限公司 | Wearable equipment |
| CN112086746A (en) * | 2020-09-04 | 2020-12-15 | Tcl通讯（宁波）有限公司 | Structure and method for expanding antenna bandwidth and mobile terminal |
| WO2022110309A1 (en) * | 2020-11-26 | 2022-06-02 | 捷开通讯(深圳)有限公司 | Antenna apparatus and mobile terminal |
| CN112968275A (en) * | 2021-02-03 | 2021-06-15 | 维沃移动通信有限公司 | Electronic device |
| CN112968275B (en) * | 2021-02-03 | 2023-05-26 | 维沃移动通信有限公司 | Electronic equipment |
| CN113193336A (en) * | 2021-04-06 | 2021-07-30 | 深圳市广和通无线股份有限公司 | Antenna assembly and radio frequency control method |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Applicant after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: 523860 No. 18 Wusha Haibin Road, Chang'an Town, Dongguan City, Guangdong Province Applicant before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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