CN107124192A - A kind of radio circuit and mobile terminal - Google Patents
A kind of radio circuit and mobile terminal Download PDFInfo
- Publication number
- CN107124192A CN107124192A CN201710297569.2A CN201710297569A CN107124192A CN 107124192 A CN107124192 A CN 107124192A CN 201710297569 A CN201710297569 A CN 201710297569A CN 107124192 A CN107124192 A CN 107124192A
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- CN
- China
- Prior art keywords
- mobile terminal
- wave filter
- standing wave
- load
- radio circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
-
- 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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
Abstract
The embodiment of the present invention provides a kind of radio circuit and mobile terminal, radio circuit includes wave filter, matching module and standing wave adjuster, the output end of wave filter is connected with the input of matching module, and standing wave adjuster is connected with the output end of wave filter and the input of matching module respectively；When the load of mobile terminal is antenna, the standing wave of the load of standing wave adjuster regulation wave filter, matching module is matched to the output end phase of wave filter, so that the output terminal impedance of wave filter keeps matching with the load impedance of wave filter.When the load of mobile terminal is antenna, the embodiment of the present invention can ensure that the output terminal impedance of mobile terminal median filter is matched with the load impedance of wave filter all the time, improve the efficiency and power output of power amplifier, effectively reduce power consumption and caloric value of the mobile terminal under coupling and state, and simple in construction, space-consuming and Insertion Loss are small, cost is low.
Description
Technical field
The present invention relates to field of circuit technology, more particularly to a kind of radio circuit and a kind of mobile terminal.
Background technology
Mobile terminal is generally in conducted state or coupling and state.Wherein, it is mobile when mobile terminal is in conducted state
The load of terminal is instrument, under the state, the load emission ratio very little of mobile terminal, the port Impedance and instrument of mobile terminal
Port Impedance almost match completely.When mobile terminal is in coupling and state, the load of mobile terminal is antenna, mobile terminal
Load standing wave it is larger, the port Impedance of mobile terminal and the port Impedance mismatch of antenna are serious.The load resistance of mobile terminal
Anti- mismatch can cause the load impedance mismatch of power amplifier, and the efficiency and power output of power amplifier are low, and mobile terminal
Power consumption and caloric value it is big.
Prior art makes mobile terminal realize load impedance under conducted state and coupling and state by following scheme
Matching：
As shown in figure 1, the program is according to mobile terminal current working frequency range selecting switch and match group, to adjust antenna
Feedback place and feedback ground matching, to change the working frequency of antenna.
But, load impedance matching scheme of the prior art there is problems：It can only reduce to a certain extent
The load impedance mismatch problems of mobile terminal, improve the efficiency of antenna, and can not make the port Impedance and antenna of mobile terminal
Port Impedance is matched completely.
The content of the invention
In view of the above problems, the purpose of the embodiment of the present invention is to provide a kind of radio circuit and a kind of mobile terminal, with
The problem of port Impedance of mobile terminal is matched completely with the port Impedance of antenna can not be made by solving the matching scheme of prior art.
It is described to penetrate applied to mobile terminal the embodiment of the invention discloses a kind of radio circuit in order to solve the above problems
Frequency circuit includes wave filter, matching module and standing wave adjuster, wherein, the output end of the wave filter and the matching module
Input is connected, and the standing wave adjuster is connected with the output end of the wave filter and the input of the matching module respectively；
When the load of the mobile terminal is antenna, the standing wave adjuster adjusts the standing wave of the load of the wave filter, described
The output end phase of the wave filter is matched with module, so that the output terminal impedance of the wave filter and the wave filter
Load impedance keep matching.
In order to solve the above problems, the embodiment of the invention discloses a kind of mobile terminal, including described radio circuit.
The embodiment of the present invention includes advantages below：By increasing standing wave adjuster in radio circuit, and wave filter is set
Output end be connected with the input of matching module, standing wave adjuster output end respectively with wave filter and the input of matching module
End is connected, when the load of mobile terminal is antenna, i.e., when mobile terminal is in coupling and state, adjusted by standing wave adjuster
The standing wave of the load of wave filter, and then the output end phase of wave filter is matched by matching module, so that wave filter
Output terminal impedance keeps matching with the load impedance of wave filter.So, when mobile terminal is in coupling and state, the present invention is implemented
Example can ensure that the output terminal impedance of mobile terminal median filter is matched with the load impedance of wave filter all the time, that is, ensure mobile whole
The load impedance of end port is matched with the load impedance of antenna port all the time, and this improves the efficiency of power amplifier and defeated
Go out power, effectively reduce power consumption and caloric value of the mobile terminal under coupling and state.
Brief description of the drawings
Fig. 1 is the load impedance matching schematic diagram of mobile terminal in the prior art；
Fig. 2 is a kind of structured flowchart of radio circuit embodiment of the present invention；
Fig. 3 is a kind of structured flowchart of radio circuit specific embodiment of the present invention.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
Reference picture 2, it illustrates a kind of structured flowchart of radio circuit embodiment of the present invention, the radio circuit can be answered
For mobile terminal, for example mobile phone, tablet personal computer, personal digital assistant (PDA, Personal Digital Assistant),
Vehicle-mounted computer, Intelligent worn device or navigator etc..
Reference picture 2, the radio circuit can specifically include following module：Wave filter 10, matching module 20 and standing wave regulation
Device 30 etc., wherein, the output end of wave filter 10 is connected with the input of matching module 20, standing wave adjuster 30 respectively with wave filter
10 output end is connected with the input of matching module 20；When the load of mobile terminal is antenna, i.e., when mobile terminal is in
When coupling and state (such as the state of holding, free space state, people's head status), standing wave adjuster 30 adjusts the negative of wave filter 10
The standing wave of load, matching module 20 is matched to the output end phase of wave filter 10 so that the output terminal impedance of wave filter 10 with
The load impedance of wave filter 10 keeps matching.
Specifically, when the output terminal impedance of wave filter 10 is matched with the load impedance of wave filter 10, wave filter 10 it is defeated
The load reflection coefficient of the reflectance factor and wave filter 10 that go out end is conjugated, now, the output end standing wave and wave filter of wave filter 10
10 load standing wave is equal, the reflection coefficient phase of the output end of wave filter 10 and the load reflection coefficient phase phase of wave filter 10
Instead.
So, when mobile terminal is in coupling and state, the embodiment of the present invention can ensure mobile terminal median filter 10
Load impedance of the output terminal impedance all the time with wave filter 10 match, that is, ensure the load impedance of mobile terminal port all the time with day
The load impedance matching of line end mouthful, this improves the efficiency of power amplifier and power output, effectively reduces mobile terminal
Power consumption and caloric value under coupling and state.
Specifically, in one particular embodiment of the present invention, the basic structure of radio circuit can be with as shown in figure 3, penetrate
Frequency circuit is in addition to including wave filter 10, matching module 20 and standing wave adjuster 30, in addition to power amplifier 40, switch module
50th, the first matching module 60 between power amplifier 40 and wave filter 10, the second matching module 70 after switch module 50.
Wherein, in radio circuit modules (power amplifier 40, wave filter 10, switch module 50 and microstrip line etc.) are made in production
All it is to be designed and measure according to 50 Ω reference impedance during making, the port Impedance of instrument is also all the ginseng according to 50 Ω
Examine impedance to be designed and measure, therefore, when the load of mobile terminal is instrument, i.e., when mobile terminal is in conducted state
When, generally it is easy to be matched the port Impedance of mobile terminal with the port Impedance of instrument.In multiband system, antenna
60 working frequency range is wider, under each working frequency range, and the reflectance factor and phase (i.e. time delay) of antenna port differ greatly, now,
Even if the standing wave for the load for increasing standing wave adjuster 30 in radio circuit to adjust wave filter 10, if the reflection system of antenna port
Number and the reflectance factor of mobile terminal port are not conjugated, and still the load impedance of antenna port can not all be matched into 50 Ω.
That is, when mobile terminal is in coupling and state, only increase standing wave adjuster 30, the reflectance factor of the output end of wave filter 10
Not necessarily it is conjugated with the load reflection coefficient of wave filter 10, the port Impedance of mobile terminal is still deposited with the port Impedance of antenna 60
The problem of mismatch.
Further analysis, in above-mentioned radio circuit, the maximum element of time delay is wave filter 10, the load of wave filter 10 (from
The output end of wave filter 10 is seen to the end of antenna 60) phase of reflectance factor is that comparison is convergent, and the load of power amplifier 40
The phase bit comparison diverging of (in terms of from the output end of power amplifier 40 to the end of antenna 60) reflectance factor, once the port of mobile terminal
The port Impedance mismatch of impedance and antenna 60, the uniformity of the load impedance of power amplifier 40 will severe exacerbation, cause i.e.
Just for same frequency range different channels, the big also difference of power consumption and caloric value of mobile terminal is huge.
Specifically, when in radio circuit without standing wave adjuster 30, if wave filter 10 is to being 50 Ω between antenna port
Matching system, wave filter 10 to the Insertion Loss between antenna port is L, phase of the wave filter 10 to the transmission coefficient between antenna port
Position is B.When mobile terminal is in coupling and state, if the reflectance factor of antenna port is Rt, the load of wave filter 10 is anti-
Penetrate coefficients R and meet below equation：
R=L-2e-2BRt
Phase B size will not cause to conduct mismatch it can be seen from above formula, and phase B size is not interfered with yet
Under couple state, the load reflection coefficient R of wave filter 10 amplitude and standing wave, phase B size can only influence wave filter 10
Load reflection coefficient R phase.
Because the rear class of wave filter 10 has matching module 20, matching module 20 can adjust phase B.At mobile terminal
When conducted state, each inter-stage impedance of radio circuit is all matching, and the time delay of wave filter 10 does not influence matching.Work as mobile terminal
During in coupling and state, if output terminal impedance and the load impedance mismatch of wave filter 10 of wave filter 10, in the defeated of wave filter 10
Go out after standing wave of the end increase standing wave adjuster 30 to adjust the load of wave filter 10, even if standing wave adjuster 30 brings extra phase
Position, phase B is adjusted by the matching module 20 of the rear class of wave filter 10, you can to adjust the load reflection system of wave filter 10
Number R phase so that the reflection coefficient phase of the output end of wave filter 10 and the load reflection coefficient opposite in phase of wave filter 10,
I.e. so that the output terminal impedance of wave filter 10 is matched with the load impedance of wave filter 10.
Alternatively, in one embodiment of the invention, reference picture 3, standing wave adjuster 30 can include：At least one is opened
Device 31 is closed, the first end of switching device 31 is connected with the output end of wave filter 10 and the input of matching module 20 respectively；Extremely
A few standing wave adjustment unit 32, standing wave adjustment unit 32 is connected with the second end of switching device 31, and standing wave adjustment unit 32 is used
In the standing wave of the load of regulation wave filter 10, each standing wave adjustment unit 32 has different working frequency range；Control unit 33, control
Unit 33 is connected with the control end of switching device 31, when the load of mobile terminal is instrument, the controlling switch device of control unit 33
Part 31 is disconnected, and when the load of mobile terminal is antenna, control unit 33 is controlled and standing wave according to the working frequency range of mobile terminal
Adjustment unit 32 (working frequency range of the standing wave adjustment unit 32 is identical with the working frequency range of mobile terminal) corresponding switching device
31 conductings.Because switching device 31 is away from antenna 60, therefore the general switching device 31 of antistatic effect can be selected, be easy to section
Save switch cost.Further, since standing wave adjustment unit 32 need to only adjust the standing wave of the load of wave filter 10 in single frequency range, because
This, Insertion Loss is small.
Alternatively, control unit 33 can be arranged in the control chip of mobile terminal.In the embodiment of the present invention, at least one
Individual can be one or more.
Alternatively, switching device 31 can include mechanical switch, electronic switch, triode or metal-oxide-semiconductor.Specifically, electronics
Switch can include single-pole single-throw switch (SPST), single pole multiple throw, multi-pole, multi-throw switch.
Wherein, the number of switching device 31 can be determined according to the working frequency range number of mobile terminal and the species of switch.
For example, when the working frequency range number of mobile terminal is three, if switching device 31 is to throw out single pole multiple throw or multitool more
Close, then the number of switching device 31 can be 1.Now, the throwing point that standing wave adjustment unit 32 can be with switching device 31
It is connected, when mobile terminal is in coupling and state, control unit 33 is according to the working frequency range of mobile terminal, and control and standing wave are adjusted
The conducting of unit 32 (working frequency range of the standing wave adjustment unit 32 is identical with the working frequency range of mobile terminal) corresponding throwing point.
Alternatively, standing wave adjustment unit 32 can include at least one in electric capacity, inductance or transmission line.For example, standing wave
Adjustment unit 32 can include multiple electric capacity, or standing wave adjustment unit 32 can include at least one electric capacity and at least one inductance
Deng.
Compared with prior art, standing wave adjustment unit 32 can be only by electric capacity, inductance or transmission line in the embodiment of the present invention
Constitute, not only occupy little space, Insertion Loss is small, and cost is also lower.
In one embodiment of the invention, standing wave adjuster 30 can be integrally disposed with wave filter 10, to reduce standing wave
The space that adjuster 30 takes.
The radio circuit of the embodiment of the present invention includes advantages below：By increasing standing wave adjuster in radio circuit, and
The output end of wave filter is set to be connected with the input of matching module, standing wave adjuster is respectively with the output end of wave filter and matching
The input of module is connected, when the load of mobile terminal is antenna, i.e., when mobile terminal is in coupling and state, pass through standing wave
The standing wave of the load of adjuster regulation wave filter, and then the output end phase of wave filter is matched by matching module, with
The output terminal impedance of wave filter is set to keep matching with the load impedance of wave filter.So, when mobile terminal is in coupling and state,
The embodiment of the present invention can ensure that the output terminal impedance of mobile terminal median filter is matched with the load impedance of wave filter all the time, i.e.,
Ensure that the load impedance of mobile terminal port is matched with the load impedance of antenna port all the time, this improves power amplifier
Efficiency and power output, power consumption and caloric value of the mobile terminal under coupling and state are effectively reduced, while can reduce
Space hold and Insertion Loss, realization reduce cost.
The invention also discloses a kind of mobile terminal, including above-mentioned radio circuit.
Specifically, mobile terminal can be set including mobile phone, tablet personal computer, personal digital assistant, vehicle-mounted computer, intelligence wearing
Standby or navigator etc..
The mobile terminal of the embodiment of the present invention includes advantages below：By increasing standing wave adjuster in radio circuit, and
The output end of wave filter is set to be connected with the input of matching module, standing wave adjuster is respectively with the output end of wave filter and matching
The input of module is connected, when the load of mobile terminal is antenna, i.e., when mobile terminal is in coupling and state, pass through standing wave
The standing wave of the load of adjuster regulation wave filter, and then the output end phase of wave filter is matched by matching module, with
The output terminal impedance of wave filter is set to keep matching with the load impedance of wave filter.So, when mobile terminal is in coupling and state,
The embodiment of the present invention can ensure that the output terminal impedance of mobile terminal median filter is matched with the load impedance of wave filter all the time, i.e.,
Ensure that the load impedance of mobile terminal port is matched with the load impedance of antenna port all the time, this improves power amplifier
Efficiency and power output, power consumption and caloric value of the mobile terminal under coupling and state are effectively reduced, while can reduce
Space hold and Insertion Loss, realization reduce cost.
For mobile terminal embodiment, because it includes radio circuit, so description is fairly simple, related part
Illustrate referring to the part of radio circuit embodiment.
Each embodiment in this specification is described by the way of progressive, what each embodiment was stressed be with
Between the difference of other embodiment, each embodiment identical similar part mutually referring to.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can be provided as method, device or calculate
Machine program product.Therefore, the embodiment of the present invention can using complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can use it is one or more wherein include computer can
With in the computer-usable storage medium (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present invention is with reference to method according to embodiments of the present invention, terminal device (system) and computer program
The flow chart and/or block diagram of product is described.It should be understood that can be by computer program instructions implementation process figure and/or block diagram
In each flow and/or square frame and the flow in flow chart and/or block diagram and/or the combination of square frame.These can be provided
Computer program instructions are set to all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to produce a machine so that held by the processor of computer or other programmable data processing terminal equipments
Capable instruction is produced for realizing in one flow of flow chart or multiple flows and/or one square frame of block diagram or multiple square frames
The device for the function of specifying.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing terminal equipments
In the computer-readable memory worked in a specific way so that the instruction being stored in the computer-readable memory produces bag
The manufacture of command device is included, the command device is realized in one flow of flow chart or multiple flows and/or one side of block diagram
The function of being specified in frame or multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing terminal equipments so that
Series of operation steps is performed on computer or other programmable terminal equipments to produce computer implemented processing, so that
The instruction performed on computer or other programmable terminal equipments is provided for realizing in one flow of flow chart or multiple flows
And/or specified in one square frame of block diagram or multiple square frames function the step of.
Although having been described for the preferred embodiment of the embodiment of the present invention, those skilled in the art once know base
This creative concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to
Including preferred embodiment and fall into having altered and changing for range of embodiment of the invention.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or terminal device including a series of key elements are not only wrapped
Those key elements, but also other key elements including being not expressly set out are included, or also include being this process, method, article
Or the intrinsic key element of terminal device.In the absence of more restrictions, by wanting that sentence "including a ..." is limited
Element, it is not excluded that also there is other identical element in the process including the key element, method, article or terminal device.
Above to a kind of radio circuit provided by the present invention and a kind of mobile terminal, it is described in detail, herein
Apply specific case to be set forth the principle and embodiment of the present invention, the explanation of above example is only intended to help
Understand the method and its core concept of the present invention；Simultaneously for those of ordinary skill in the art, according to the thought of the present invention,
It will change in specific embodiments and applications, in summary, this specification content should not be construed as to this
The limitation of invention.
Claims (7)
1. a kind of radio circuit, applied to mobile terminal, it is characterised in that the radio circuit includes wave filter, matching module
And standing wave adjuster, wherein,
The output end of the wave filter is connected with the input of the matching module, the standing wave adjuster respectively with the filtering
The output end of device is connected with the input of the matching module；
When the load of the mobile terminal is antenna, the standing wave adjuster adjusts the standing wave of the load of the wave filter, institute
State matching module to match the output end phase of the wave filter, so that the output terminal impedance of the wave filter and the filter
The load impedance of ripple device keeps matching.
2. radio circuit according to claim 1, it is characterised in that the standing wave adjuster includes：
At least one switching device, the first end of the switching device is respectively with the output end of the wave filter and described matching mould
The input of block is connected；
At least one standing wave adjustment unit, the standing wave adjustment unit is connected with the second end of the switching device, the standing wave
Adjustment unit is used for the standing wave for adjusting the load of the wave filter；Each standing wave adjustment unit has different working frequency range；
Control unit, described control unit is connected with the control end of the switching device, when the load of the mobile terminal is instrument
During device, described control unit controls the switching device to disconnect, when the load of the mobile terminal is antenna, the control list
Member controls the switch device conductive corresponding with the standing wave adjustment unit according to the working frequency range of the mobile terminal.
3. radio circuit according to claim 2, it is characterised in that the standing wave adjustment unit include electric capacity, inductance or
At least one in transmission line.
4. radio circuit according to claim 2, it is characterised in that the switching device includes mechanical switch, electronic cutting
Pass, triode or metal-oxide-semiconductor.
5. radio circuit according to claim 1, it is characterised in that the standing wave adjuster with the wave filter is integrated sets
Put.
6. a kind of mobile terminal, it is characterised in that including the radio circuit any one of claim 1-5.
7. mobile terminal according to claim 6, it is characterised in that the mobile terminal includes mobile phone, tablet personal computer, individual
Personal digital assistant, vehicle-mounted computer, Intelligent worn device or navigator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710297569.2A CN107124192B (en) | 2017-04-28 | 2017-04-28 | A kind of radio circuit and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710297569.2A CN107124192B (en) | 2017-04-28 | 2017-04-28 | A kind of radio circuit and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107124192A true CN107124192A (en) | 2017-09-01 |
| CN107124192B CN107124192B (en) | 2019-07-26 |
Family
ID=59726063
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710297569.2A Active CN107124192B (en) | 2017-04-28 | 2017-04-28 | A kind of radio circuit and mobile terminal |
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| Country | Link |
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| CN (1) | CN107124192B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052975A (en) * | 1991-02-06 | 1991-07-10 | 中国人民解放军空军第一研究所 | A kind of slot antenna for variably polarized waveguide |
| US20080180345A1 (en) * | 2007-01-30 | 2008-07-31 | Larson Dennis E | Variable antenna matching network for an implantable antenna |
| CN101814963A (en) * | 2010-02-25 | 2010-08-25 | 飞创(苏州)电讯产品有限公司 | Automatic microwave electronic adjustable loading device and detection method thereof |
| CN104467692A (en) * | 2014-12-15 | 2015-03-25 | 佳律通信设备(上海)有限公司 | Input-matching standing-wave ratio adjusting circuit for low-noise amplifier |
| US20150207541A1 (en) * | 2012-07-12 | 2015-07-23 | Keio University | Directional coupling communication apparatus |
-
2017
- 2017-04-28 CN CN201710297569.2A patent/CN107124192B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052975A (en) * | 1991-02-06 | 1991-07-10 | 中国人民解放军空军第一研究所 | A kind of slot antenna for variably polarized waveguide |
| US20080180345A1 (en) * | 2007-01-30 | 2008-07-31 | Larson Dennis E | Variable antenna matching network for an implantable antenna |
| CN101814963A (en) * | 2010-02-25 | 2010-08-25 | 飞创(苏州)电讯产品有限公司 | Automatic microwave electronic adjustable loading device and detection method thereof |
| US20150207541A1 (en) * | 2012-07-12 | 2015-07-23 | Keio University | Directional coupling communication apparatus |
| CN104467692A (en) * | 2014-12-15 | 2015-03-25 | 佳律通信设备(上海)有限公司 | Input-matching standing-wave ratio adjusting circuit for low-noise amplifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107124192B (en) | 2019-07-26 |
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