CN103929133B - A kind of power amplifier circuit - Google Patents
A kind of power amplifier circuit Download PDFInfo
- Publication number
- CN103929133B CN103929133B CN201410153332.3A CN201410153332A CN103929133B CN 103929133 B CN103929133 B CN 103929133B CN 201410153332 A CN201410153332 A CN 201410153332A CN 103929133 B CN103929133 B CN 103929133B
- Authority
- CN
- China
- Prior art keywords
- circuit
- frequency band
- power amplifier
- power
- selection
- 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.)
- Expired - Fee Related
Links
Landscapes
- Amplifiers (AREA)
Abstract
The embodiment of the invention discloses a kind of power amplifier circuit, different enable signals are exported by using logic selection circuit, just the entirety control to power mode required under frequency band and each frequency band is realized, the integrated area for cutting of control chip is solved, the technical problem of the high power consumption of the power amplifier of multiband/pattern is reduce further.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of power amplifier circuit.
Background technology
With the fast development of mobile communication technology, the 3G communication technologys of current main-stream are ripe and gradually step into 4G
In the epoch, power amplifier is due to the characteristics of it amplifies power output so that the skill of digital modulation is carried out using power amplifier
Art is goed deep into this area, simultaneously as power amplifier self-defect-high power consumption, especially applies hand-held power amplifier
When carrying out multiband/patten transformation in mobile device, the power consumption of power amplifier is bigger, therefore, how to reduce multiband/pattern
The high power consumption of power amplifier has become those skilled in the art's technical problem urgently to be resolved hurrily.
The power amplifier of the integrated multiband/pattern of current mobile device is directed to the problem of high power consumption, typically expands
The integrated area of big control chip, by the power consumption of physics mode reduction power amplifier.
However, such integrated area for expanding control chip is often due to the volumetric constraint of mobile device itself, it is impossible to
It is really achieved the technical problem of the high power consumption of the power amplifier of solution multiband/pattern.
The content of the invention
A kind of power amplifier circuit is the embodiment of the invention provides, exports different by using logic selection circuit
Enable signal, just realize to power mode required under frequency band and each frequency band entirety control, solve control chip
Integrated area for cutting, reduce further the technical problem of the high power consumption of the power amplifier of multiband/pattern.
A kind of power amplifier circuit provided in an embodiment of the present invention, including：
Logic selection circuit and mu balanced circuit, the logic selection circuit and the mu balanced circuit are connected；
The logic selection circuit includes frequency band selection unit and power selection unit；
The mu balanced circuit includes multiple frequency band output circuits, each frequency band output circuit frequency range different from possessing
Band mode it is corresponding；
Wherein, the frequency band selection unit output first enables signal behavior and enables the corresponding frequency of signal with described first
Band, the power selection unit output second enables frequency band output circuit selection and the institute that signal triggers the mu balanced circuit
State the corresponding magnitude of voltage of the second enable signal so that by described under the frequency band corresponding with the described first enable signal
Mu balanced circuit exports corresponding power mode to power amplifier.
Alternatively, described power amplifier circuit, also including compensating electric capacity, is connected with the mu balanced circuit.
Alternatively, the mu balanced circuit is loop pressure-stabilizing circuit, also including error amplifier；
The error amplifier is connected by switch and multiple frequency band output circuits.
Alternatively, the error amplifier passes through outside band-gap reference circuit acquisition reference voltage.
Alternatively, the frequency band output circuit includes that FET and power mode selection circuit are constituted；
The FET and the power mode selection circuit are connected.
Alternatively, the power mode selection circuit by its internal metal-oxide-semiconductor select corresponding resistance turn on/it is short
Road so that it is corresponding that the magnitude of voltage of output enables signal with described second.
Alternatively, the frequency band selection unit is phase inverter/decoder；
The power selection unit is 24 decoders；
Phase inverter/the decoder and 24 decoder constitute gate selection circuit.
Alternatively, described power amplifier circuit, also includes：
Several switches, respectively with the error amplifier, the frequency band output circuit, the compensating electric capacity connects
Connect.
Alternatively, at least 4, the switch.
Alternatively, the logic selection circuit carries out translation output with the outside control by receiving external control signal
The corresponding first enable signal and described second of signal processed enables signal.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：
（1）Different enable signals are exported by using logic selection circuit, is just realized under frequency band and each frequency band
The overall control of required power mode, solves the integrated area for cutting of control chip, reduce further multiband/pattern
Power amplifier high power consumption technical problem；
（2）By the connection of compensating electric capacity and mu balanced circuit, the stability of a system is not only further kept, and improve electricity
While the utilization rate on road, circuit area is reduced；
（3）It is connected with multiple frequency band output circuits by error amplifier, realizes an error amplifier
Export different control voltages and give frequency band output circuit, meet the different capacity pattern under different frequency bands pattern.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
Other accompanying drawings are obtained with according to these accompanying drawings.
Fig. 1 is a kind of structural representation of power amplifier circuit provided in an embodiment of the present invention；
Fig. 2 is a kind of circuit diagram of power amplifier circuit provided in an embodiment of the present invention；
Fig. 3 is a kind of circuit of the power mode selection circuit of power amplifier circuit provided in an embodiment of the present invention
Schematic diagram；
Fig. 4 is that a kind of circuit of the logic selection circuit figure of power amplifier circuit provided in an embodiment of the present invention shows
It is intended to.
Specific embodiment
A kind of power amplifier circuit is the embodiment of the invention provides, exports different by using logic selection circuit
Enable signal, just realize to power mode required under frequency band and each frequency band entirety control, solve control chip
Integrated area for cutting, reduce further the technical problem of the high power consumption of the power amplifier of multiband/pattern.
To enable that goal of the invention of the invention, feature, advantage are more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, is clearly and completely described, it is clear that disclosed below to the technical scheme in the embodiment of the present invention
Embodiment be only a part of embodiment of the invention, and not all embodiment.Based on the embodiment in the present invention, this area
All other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to protection of the present invention
Scope.
Fig. 1 is a kind of structural representation of power amplifier circuit provided in an embodiment of the present invention, and embodiment 1 is wrapped
Include：
As shown in figure 1, a kind of power amplifier circuit provided in an embodiment of the present invention includes：Logic selection circuit 11
With mu balanced circuit 12, logic selection circuit 11 and mu balanced circuit 12 are connected；
Logic selection circuit 11 includes frequency band selection unit 111 and power selection unit 112；
Mu balanced circuit 12 includes multiple frequency band output circuits 121, each frequency band output circuit 121 frequency range different from possessing
Band mode it is corresponding；
Wherein, the output of frequency band selection unit 111 first enables signal behavior and enables the corresponding frequency band of signal, work(with first
The selection of frequency band output circuit 121 that the output of rate select unit 112 second enables signal triggering mu balanced circuit 12 enables letter with second
Number corresponding magnitude of voltage so that corresponding work(is exported by mu balanced circuit 12 under frequency band corresponding with the first enable signal
Rate pattern is to power amplifier, it is necessary to illustrate, foregoing logic selection circuit 11 can also be by receiving outside control
Signal processed carries out the translation output first enable signal and second corresponding with external control signal and enables signal.
Compensating electric capacity 13, is connected with mu balanced circuit 12；
Fig. 2 is a kind of circuit diagram of power amplifier circuit provided in an embodiment of the present invention, as shown in Fig. 2
Embodiment 2 includes：Foregoing mu balanced circuit 12 is loop pressure-stabilizing circuit, also including error amplifier 122, the error op
Amplifier 122 is connected by switch and multiple frequency band output circuits 121, and foregoing error amplifier 122 passes through external belt
Gap reference circuit obtains reference voltage, it is to be appreciated that the reference voltage is by the error amplifier 122 shown in Fig. 2
The reference voltage level for possessing corresponding temperature coefficient that INP pin are accessed is, it is necessary to explanation, loop pressure-stabilizing circuit is by one
Error amplifier 122 and multiple frequency band output circuits 121 and multiple FETs 21 are constituted.
As shown in Fig. 2 foregoing frequency band output circuit 121 includes 22 groups of FET 21 and power mode selection circuit
Into foregoing FET 21 and power mode selection circuit 22 is connected, and foregoing FET 21 has two, respectively MP1
And MP2, do not limit specifically herein.
As shown in Fig. 2 a kind of power amplifier circuit provided in an embodiment of the present invention is also switched including several, point
Not with error amplifier 122, frequency band output circuit 121, compensating electric capacity 13 is connected, at least 4, foregoing switch, respectively
It is S1, S2, S3 and S4.
Fig. 3 is a kind of circuit of the power mode selection circuit of power amplifier circuit provided in an embodiment of the present invention
Schematic diagram, as shown in figure 3, embodiment 3 includes：Power mode selection circuit 22 is selected accordingly by its internal metal-oxide-semiconductor 31
Resistance 32 carries out turning on/short circuit so that the magnitude of voltage of output is corresponding with the second enable signal, such as shown in figure 3, acquiescence feelings
All metal-oxide-semiconductors 31 are opened under condition, and each corresponding resistance of metal-oxide-semiconductor 31 is shorted, so whole power mode selection circuit 22
Resistance value is equal to Red=R2+R4, now, when selection low-power mode LPM is needed, the power mode selection circuit 22 shown in Fig. 3
LPM_EN pin effectively, then corresponding metal-oxide-semiconductor is closed the resistance value of power mode selection circuit and is equal to Red=R2+R4+R5。
Fig. 4 is that a kind of circuit of the logic selection circuit figure of power amplifier circuit provided in an embodiment of the present invention shows
It is intended to, as shown in figure 4, embodiment 4 includes：Frequency band selection unit 111 is phase inverter/decoder, it is necessary to explanation, the frequency band
Select unit 111 can select phase inverter or decoder according to Band number of frequency bands, and such as Band frequency bands are two
Can be selection phase inverter during Band, can be selection decoder, power selection unit 112 when Band frequency bands are more than two
It is 24 decoders, phase inverter/decoder and 24 decoders constitute gate selection circuit, as shown in figure 4, work as needing switch of frequency band
During with power mode, the Band_sel of logic selection circuit 11 is produced by a phase inverter for making buffer functions/decoder
The first enable signal of the Band1_en/Band2_en of 0/1 two states, the switch outside triggering enters according to the first enable signal
Corresponding switch/the closure of row, VM0, VM1 pin produces three the second enable signals of senior middle school's low-power mode by 24 decoders,
The output of triggering mu balanced circuit 12 enables the corresponding magnitude of voltage of signal with second, it is to be understood that as shown in figure 4, HPM is height
Power mode, the output high-power voltage of mu balanced circuit 12, for example, 2.9V, MPM are middle power mode, during mu balanced circuit 12 is exported
Power voltage, for example, 2.75V, LPM is low-power mode, the output low-power voltage of mu balanced circuit 12, for example, 2.6V, herein
Do not limit specifically.
For ease of understand, below with a concrete application scene in the embodiment of the present invention shown in Fig. 1 to Fig. 4 provide work(
The all parts of labor amplifier controller circuit are described in detail in the process of switch of frequency band and power mode, application examples bag
Include：
In the present embodiment, when mobile device apart from base station farther out when power amplifier need high-power mode to realize RF
The normal transmission of signal, needs for power amplifier to be converted into low-power mode from high-power mode when close to base station, while
Need to be 1920MHz~1980MHz in Band1 frequency band conversions into Band2 frequency bands, such as frequency range of Band1 frequency bands,
When being converted into RF signal frequency ranges 824MHz~849MHz that power amplifier amplifies during Band2 frequency bands, first, in Band1
High-power mode under frequency band is the HPM high powers under Band1 frequency bands for logic selection circuit 11 receives external control signal
During pattern, the Band_sel pin of logic selection circuit 11 receive external control signal, by the control signal by possessing buffering work(
The phase inverter of energy produces corresponding with Band1 the first of 0 state to enable Band1_en/ of the signal by frequency band selection unit 111
Band2_en pin are exported, and controlling switch S3 closures, S4 is opened, and switch S2 connection B1 ends, the switch S1 after compensating electric capacity 13 connects
The VREF_Band1 at B1 ends is met, now just enters Band1 band conditions, meanwhile, the VM0 of logic selection circuit 11, VM1 passes through
24 decoders produce the second of high-power mode to enable signal to mu balanced circuit 12 so that the power mode selection of Band1 frequency bands
Circuit 22 enters the high-power mode of HPM, now VREF_Band1 ends output under enabling signal function the second of HPM_EN
Be fixed voltage value under high-power mode, such as 2.9V is not specifically limited herein, then, when logic selection circuit 11
It is the Band_sel of logic selection circuit 11 when selecting the LPM low-power modes under Band2 frequency bands to receive external control signal
Pin receives external control signal, and the control signal is produced into the corresponding to Band2 of 1 state by the phase inverter for possessing pooling feature
The first enable signal exported by the Band1_en/Band2_en pin of frequency band selection unit 111, controlling switch S3 is opened, S4
Closure S2 connection B2 ends, the switch S1 of the branch road connection of compensating electric capacity 13 is connected to the VREF_Band2 of the Band2 frequency bands at B2 ends,
Now just enter Band2 band conditions, meanwhile, the VM0 of logic selection circuit 11, VM1 produce low-power by 24 decoders
The second of pattern enables signal to mu balanced circuit 12 so that the power mode selection circuit 22 of Band2 frequency bands is by LPM_EN's
Second to enable and enter LPM low-power modes under signal function, and now VREF_Band12 ends output is consolidating under low-power mode
Determine magnitude of voltage, such as 2.6V is not specifically limited herein.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：
（1）Different enable signals are exported by using logic selection circuit, is just realized under frequency band and each frequency band
The overall control of required power mode, solves the integrated area for cutting of control chip, reduce further multiband/pattern
Power amplifier high power consumption technical problem；
（2）By the connection of compensating electric capacity and mu balanced circuit, the stability of a system is not only further kept, and improve electricity
While the utilization rate on road, circuit area is reduced；
（3）It is connected with multiple frequency band output circuits by error amplifier, realizes an error amplifier
Export different control voltages and give frequency band output circuit, meet the different capacity pattern under different frequency bands pattern.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the unit
Divide, only a kind of division of logic function there can be other dividing mode when actually realizing, for example multiple units or component
Can combine or be desirably integrated into another system, or some features can be ignored, or do not perform.It is another, it is shown or
The coupling each other for discussing or direct-coupling or communication connection can be the indirect couplings of device or unit by some interfaces
Close or communicate to connect, can be electrical, mechanical or other forms.
The unit that is illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be according to the actual needs selected to realize the mesh of this embodiment scheme
's.
In addition, during each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.Above-mentioned integrated list
Unit can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is to realize in the form of SFU software functional unit and as independent production marketing or use
When, can store in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part for being contributed to prior art in other words or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are used to so that a computer
Equipment（Can be personal computer, server, or network equipment etc.）Perform the complete of each embodiment methods described of the invention
Portion or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage（ROM, Read-Only
Memory）, random access memory（RAM, Random Access Memory）, magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to preceding
Embodiment is stated to be described in detail the present invention, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent is carried out to which part technical characteristic；And these
Modification is replaced, and does not make the spirit and scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.
Claims (9)
1. a kind of power amplifier circuit, it is characterised in that including：
Logic selection circuit and mu balanced circuit, the logic selection circuit and the mu balanced circuit are connected；
The logic selection circuit includes frequency band selection unit and power selection unit；
The mu balanced circuit includes multiple frequency band output circuits, the frequency of each frequency band output circuit frequency range different from possessing
Band model is corresponding；
Wherein, the frequency band selection unit output first enables signal behavior and enables the corresponding frequency band of signal with described first,
Power selection unit output second enable signal trigger the frequency band output circuit selection of the mu balanced circuit with it is described
Second enables the corresponding magnitude of voltage of signal so that by described steady under the frequency band corresponding with the described first enable signal
Volt circuit exports corresponding power mode to power amplifier；
The logic selection circuit by receive external control signal carry out translation output it is relative with the external control signal
Described first for answering enables signal and described second and enables signal.
2. power amplifier circuit according to claim 1, it is characterised in that also including compensating electric capacity, it is and described
Mu balanced circuit is connected.
3. power amplifier circuit according to claim 2, it is characterised in that
The mu balanced circuit is loop pressure-stabilizing circuit, also including error amplifier；
The error amplifier is connected by switch and multiple frequency band output circuits.
4. power amplifier circuit according to claim 3, it is characterised in that
The error amplifier passes through outside band-gap reference circuit and obtains reference voltage.
5. power amplifier circuit according to claim 1, it is characterised in that
The frequency band output circuit includes that FET and power mode selection circuit are constituted；
The FET and the power mode selection circuit are connected.
6. power amplifier circuit according to claim 5, it is characterised in that
The power mode selection circuit carries out turning on/short circuit by its internal metal-oxide-semiconductor corresponding resistance of selection so that output
Magnitude of voltage with described second enable signal it is corresponding.
7. power amplifier circuit according to claim 1, it is characterised in that
The frequency band selection unit is phase inverter/decoder；
The power selection unit is 24 decoders；
Phase inverter/the decoder and 24 decoder constitute gate selection circuit.
8. the power amplifier circuit according to claim 3 or 4, it is characterised in that also include：
Several switches, respectively with the error amplifier, the frequency band output circuit, the compensating electric capacity connection.
9. power amplifier circuit according to claim 8, it is characterised in that at least 4, the switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153332.3A CN103929133B (en) | 2014-04-16 | 2014-04-16 | A kind of power amplifier circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153332.3A CN103929133B (en) | 2014-04-16 | 2014-04-16 | A kind of power amplifier circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103929133A CN103929133A (en) | 2014-07-16 |
| CN103929133B true CN103929133B (en) | 2017-05-31 |
Family
ID=51147236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410153332.3A Expired - Fee Related CN103929133B (en) | 2014-04-16 | 2014-04-16 | A kind of power amplifier circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103929133B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10284235B2 (en) * | 2015-07-22 | 2019-05-07 | Skyworks Solutions, Inc. | Wireless transceiver with switch to reduce harmonic leakage |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487550A (en) * | 2010-12-06 | 2012-06-06 | 华为技术有限公司 | Communication base station and power amplification processing method thereof |
| CN103475386A (en) * | 2013-09-25 | 2013-12-25 | 小米科技有限责任公司 | Radio frequency front end terminal and terminal equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6671500B2 (en) * | 2001-03-30 | 2003-12-30 | Skyworks Solutions, Inc. | Frequency plan |
-
2014
- 2014-04-16 CN CN201410153332.3A patent/CN103929133B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487550A (en) * | 2010-12-06 | 2012-06-06 | 华为技术有限公司 | Communication base station and power amplification processing method thereof |
| CN103475386A (en) * | 2013-09-25 | 2013-12-25 | 小米科技有限责任公司 | Radio frequency front end terminal and terminal equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103929133A (en) | 2014-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11463048B2 (en) | Distributed feed-forward envelope tracking system | |
| US10886953B2 (en) | Devices and methods related to multi-band power amplifier | |
| US10790786B2 (en) | Distributed feed-forward envelope tracking system | |
| Costa et al. | RFCMOS SOI technology for 4G reconfigurable RF solutions | |
| EP2430749B1 (en) | Switchable input pair operational amplifiers | |
| CN105162491A (en) | Antenna and control method for radiofrequency signals transmitted by antenna | |
| EP2884494B1 (en) | Techniques to boost word-line voltage using parasitic capacitances | |
| US20150222020A1 (en) | Tunable antenna structure | |
| US8736342B1 (en) | Changing resonant clock modes | |
| EP3238339A1 (en) | Reconfigurable bias and supply drivers for radio frequency power amplifiers | |
| EP2883308B1 (en) | Multi-throw antenna switch with off-state capacitance reduction | |
| US20130072142A1 (en) | Antenna power coupler having a variable coupling factor | |
| KR102214243B1 (en) | Charge Recycle Switched Capacitor Regulator | |
| US9130535B2 (en) | Driver amplifier with asymmetrical T-coil matching network | |
| CN105493193A (en) | Memory cell with retention using resistive memory | |
| US20170194921A1 (en) | Multi-mode power amplifier module | |
| CN107104696A (en) | Frequency communication devices and method | |
| US10707906B2 (en) | Radio frequency transmission circuit, circuit matching method and computer storage medium | |
| CN103929133B (en) | A kind of power amplifier circuit | |
| CN105099717A (en) | Router, and antenna control system and method | |
| US20150171800A1 (en) | Tunable loadline | |
| CN104378166A (en) | Electronic device and harmonic suppression method | |
| CN213586094U (en) | Home network and audio and video playing integrated terminal based on 5G technology | |
| CN110752439A (en) | Antenna module and terminal | |
| US20150035513A1 (en) | Reference current generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |