CN206099910U - Circuit structure of RF power amplifier is trailed to envelope - Google Patents
Circuit structure of RF power amplifier is trailed to envelope Download PDFInfo
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- CN206099910U CN206099910U CN201620335384.7U CN201620335384U CN206099910U CN 206099910 U CN206099910 U CN 206099910U CN 201620335384 U CN201620335384 U CN 201620335384U CN 206099910 U CN206099910 U CN 206099910U
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- power amplifier
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Abstract
The utility model discloses a circuit structure of RF power amplifier is trailed to envelope, circuit structure include the power modulator, low -frequency range amplifier module and high band amplifier module, and low -frequency range amplifier module is connected to the power modulator, and high band and low -frequency range amplifier module are by the low -power and high power amplifier is parallelly connected constitutes, and all power amplifier link the restructural formula output matching network that shares altogether. This structure has realized a high efficiency and has been applicable to the multifrequency RF power amplifier of multimode, the utility model discloses combine digital signal processing technology, switch switching technique and restructural technique, improved power amplifier's whole efficiency, the linearity and integrated level. The utility model discloses a high linearity is carried to the signal processing technique and the difference heap power amplifier structure of the calibration of digit predistortion to 3G4G is satisfied in the realization high linearity requires and efficiency also keeps at higher level.
Description
Technical field
The utility model is related to a kind of amplifier circuit, more particularly to a kind of circuit of radio-frequency power amplifier.
Background technology
Radio-frequency power amplifier is the indispensable important component part of various Wireless Telecom Equipments, can be by faint signal
By amplifying without distortions, and gone out by aerial radiation.With the development of wireless communication technology, intelligent mobile mobile phone obtains fast
Violent development, and need to meet the Consumer's Experience of users' high-speed data-flow.Therefore, Modern Mobile Communications Systems are adopted mostly
The modulation system of spectral efficient, such as QPSK and OFDM, are typically represented as 3G and 4G mobile communication technologies, and
Such signal has higher equal peak ratio, therefore, it is less efficient when radio-frequency power amplifier works in back-off area.With
The continuous evolution of globalization, is the demand of the user for meeting different regions, smart mobile phone must is fulfilled for the requirement of multimode multi-frequency,
For example, a mobile phone can be used under the working environment of two different network formats simultaneously, and this sets to radio-frequency power amplifier
Meter improves stern challenge.In Chinese patent 201510219484.3, it is proposed that a kind of envelope-tracking of automatic aligning
Power amplifier structure, the structure adopts envelop modulator, wave detector and the delay circuit of single-stage, therefore the circuit structure is more
Complexity, and it is bulky.In addition, the structure can not preferably realize that feedback signal is carried out to realize compensation and calibration.
Utility model content
In Chinese patent 201510219484.3, it is proposed that a kind of envelope tracking power amplifier knot of automatic aligning
Structure, the structure adopts envelop modulator, wave detector and the delay circuit of single-stage, therefore the circuit structure is complex, and volume
It is huge.In addition, the structure can not preferably realize that feedback signal is carried out to realize compensation and calibration.The utility model is with the 4th
Based on radio communication LTE-FDD-A/TD-LTE-A, while back compatible LTE-FDD/TD-LTE (3.9G), WCDMA/
TD-SCDMA(3G)、GSM/EDGE（2G）, with reference to the hybrid-type unique circuit framework of digital-to-analogue, there is provided one kind is towards smart mobile phone
The circuit structure of the multimode multi-frequency radio frequency power amplifier of high-performance, high integration Deng mobile intelligent terminal, it passes through following
Technical scheme is realized：The circuit structure of envelope-tracking radio-frequency power amplifier, the circuit structure includes power supply modulator, low frequency
Section amplifier module and high band amplifier module, the power supply modulator connects the low-frequency range amplifier module, the height
Frequency range and low-frequency range amplifier module are composed in parallel by low-power and high power amplifier, and all power amplifiers connect altogether
A reconfigurable type multiple output matching network is shared, the output matching network can automatically adjust the impedance transformation ratio of load, so as to reality
The optimal output impedance of existing each frequency band.
Further, the circuit structure also includes the interior number being connected with the power supply modulator for setting DSP processors
Word base band, DSP processors produce the signal envelope and radiofrequency signal of slow switching rate by accurate estimation time delay（Homophase and just
Hand over signal）, slow down requirement of the envelope amplifier to switching rate.
Further, the digital baseband also includes digital pre-distortion and slow envelope control signal generating circuit to enter one
Step improves the overall linearity of power amplifier.
Further, the power supply modulator is included by the linear envelope amplifier in parallel and switching regulator bag of switch control rule
Network amplifier；When high conversion rate is needed, linear envelope amplifier operation, and switching regulator envelope amplifier is turned off, and improves electricity
The linearity of modulator of source；Conversely, when required switching rate is relatively low, switching regulator envelope amplifier operation improves power supply and adjusts
The efficiency of device processed, so as to improve whole efficiency.
Further, all power amplifiers are the mixed type power point for postponing 180 degree by output port
Orchestration realizes signal inversion distribution and the pseudo differential architectures for merging, and reduces input and output voltage standing-wave ratio.Further, Suo Yousuo
Stating power amplifier includes improving the linearity using numerically controlled nonlinear compensation biasing circuit.
The utility model also provides a kind of multi-frequency multi-mode comprising the envelope-tracking RF power amplifier circuit structure
Envelope-tracking RF power amplifier circuit structure, the digital baseband by two-way D/A converters, wave filter connect just
Quadrature modulator simultaneously further connects respectively the low-frequency range amplifier module and high band amplifier module by frequency switching, described
Digital baseband connects the power supply modulator by D/A converters all the way, wave filter；The digital baseband is by A/D all the way
Converter, wave filter connection down coversion modulator and and then connection antenna；The antenna is put with the envelope-tracking radio-frequency power
The output matching network of big device circuit is connected.
The working condition of the envelope-tracking RF power amplifier circuit structure of multi-frequency multi-mode is divided into two kinds of transmitting and reception；
When module is in emission state, on the one hand digital baseband part automatically generates the numeral letter of I, Q signal according to user data
Number, after D/A conversions and LPF, I, Q analog signal is generated, then it is converted into being adapted to biography through quadrature modulator
Defeated high-frequency modulation signal, finally, digital baseband is opened according to the high/low frequency of height and modulation system automatic switchover of signal frequency
Close and power switch.On the other hand, data base-band part automatically generates required envelope signal always according to the modulation system of signal
Data signal and switching envelope amplifier switch, and analogue envelope signal is converted into by D/A and low pass filter, should
Envelope letter can control the operating voltage of power amplifier.When module is in reception state, the signal Jing antennas coupling of reception
To down coversion modulator, the signal after conversion is transformed into up to digital baseband part through bandpass filter and D/A.
Further, the power supply modulator is provided with the double resistive degeneration ripples with negative temperature coefficient compensation function and disappears
Except circuit.Ripple is an important parameter of power supply modulator, and ripple is less, then the linearity of circuit is higher, and DCToDC
Conversion speed can be less.In order to the compromise of efficiency and ripple considers, using the electricity of the double resistive degenerations with negative temperature coefficient
Road is smoothing ripple, and the efficient design of power supply modulator is 80%.
The beneficial effects of the utility model：The utility model provides the circuit structure of envelope-tracking radio-frequency power amplifier,
The structure realizes a kind of high efficiency and suitable for the radio-frequency power amplifier of multimode multi-frequency, the utility model combined digital signal
Treatment technology, switch handoff technique and Reconfiguration Technologies, improve whole efficiency, the linearity and the integrated level of power amplifier.
Signal processing technology that the utility model is calibrated using digital pre-distortion and difference stack power amplifier structure are improving line
Property degree, so as to realize meeting the high linearity requirement of 3G/4G and efficiency is also maintained at higher level.
Description of the drawings
Fig. 1 is the circuit structure diagram of embodiment.
Fig. 2 is the circuit structure diagram of the linear envelope amplifier of embodiment.
Fig. 3 is the circuit structure diagram of the switching regulator envelope amplifier of embodiment.
Fig. 4 is the pseudo-differential power amplifier circuit structure chart of embodiment.
Description of reference numerals：HP is high power amplifier in figure；LP is low power amplifier.
Specific embodiment
A preferred embodiment of the present utility model, one kind includes the envelope-tracking RF power amplifier circuit structure
Multi-frequency multi-mode envelope-tracking RF power amplifier circuit structure, including power supply modulator, low-frequency range amplifier module and
High band amplifier module, inside sets the digital baseband being connected with the power supply modulator of DSP processors, the power modulation
Device connects the low-frequency range amplifier module, and the high band and low-frequency range amplifier module are amplified by low-power and high power
Device is composed in parallel, and all power amplifiers connect altogether a shared reconfigurable type multiple output matching network, and the digital baseband is also
Including digital pre-distortion and slow envelope control signal generating circuit.The power supply modulator is included by the line in parallel of switch control rule
Property envelope amplifier and switching regulator envelope amplifier；When high conversion rate is needed, linear envelope amplifier operation, and switching regulator
Envelope amplifier is turned off；When required switching rate is relatively low, switching regulator envelope amplifier operation.Institute's power amplifier
It is the mixed power divider that 180 degree is postponed by output port and realizes the pseudo-differential knot that signal inversion is distributed and merged
Structure.All power amplifiers include being provided with numerically controlled nonlinear compensation biasing circuit.The digital baseband passes through
Two-way D/A converters, wave filter connection quadrature modulator simultaneously and then connect respectively the low-frequency range amplification by frequency switching
Device module and high band amplifier module, the digital baseband connects the power supply and adjusts by D/A converters all the way, wave filter
Device processed；The digital baseband connects down coversion modulator and and then connection antenna by A/D converters all the way, wave filter；Institute
State antenna to be connected with the output matching network of the envelope-tracking RF power amplifier circuit.The radio-frequency power amplifier electricity
The working condition of line structure is divided into two kinds of transmitting and reception；When module is in emission state, digital baseband part one side root
The data signal of I, Q signal is automatically generated according to user data, after D/A conversions and LPF, I, Q simulation is generated
Signal, is then converted into being adapted to the high-frequency modulation signal of transmission through quadrature modulator, and finally, digital baseband is according to signal frequency
Height and modulation system automatically switch high/low frequency switching and power switch.On the other hand, data base-band part is always according to letter
Number modulation system, the data signal of required envelope signal and the switch of switching envelope amplifier are automatically generated, and by D/
A and low pass filter are converted into analogue envelope signal, and the envelope signal can control the operating voltage of power amplifier.Work as mould
When group is in reception state, the signal Jing antennas of reception are coupled to down coversion modulator, and the signal after conversion is through bandpass filtering
Device and D/A are transformed into up to digital baseband part.The power supply modulator is provided with the double electricity with negative temperature coefficient compensation function
Resistance negative-feedback ripple eliminates circuit, and the efficient design of power supply modulator is 80%.
The circuit structure of the present embodiment combines the hybrid-type unique circuit framework of digital-to-analogue, with reference to the Base-Band Processing of transceiver
Device, two-way power supply modulator in parallel, the double power radio-frequency power amplifiers of low frequency, double power radio-frequency power amplifiers of high frequency and can
Reconstruct formula matching network, realizes a kind of high efficiency and suitable for the radio-frequency power amplifier of multimode multi-frequency.The circuit radio frequency
Power amplifier works in occasions of the Gao Junfeng than modulated signal, and can improve the whole efficiency of radio-frequency power amplifier.
Claims (8)
1. the circuit structure of envelope-tracking radio-frequency power amplifier, it is characterised in that：The circuit structure includes power supply modulator,
Low-frequency range amplifier module and high band amplifier module, the power supply modulator connects the low-frequency range amplifier module, institute
State high band and low-frequency range amplifier module is composed in parallel by low-power and high power amplifier, all power amplifiers
Connect a shared reconfigurable type multiple output matching network altogether.
2. the circuit structure of the envelope-tracking radio-frequency power amplifier according to claim 1, it is characterised in that：The electricity
Line structure also includes the interior digital baseband being connected with the power supply modulator for setting DSP processors.
3. the circuit structure of the envelope-tracking radio-frequency power amplifier according to claim 2, it is characterised in that：The number
Word base band also includes digital pre-distortion and slow envelope control signal generating circuit.
4. the circuit structure of the envelope-tracking radio-frequency power amplifier according to claim 3, its feature exists
In：The power supply modulator includes being put by the linear envelope amplifier in parallel and switching regulator envelope of switch control rule
Big device.
5. the circuit structure of the envelope-tracking radio-frequency power amplifier according to claim 4, it is characterised in that：The institute
Power amplifier is the mixed power divider for postponing 180 degree by output port and realizes signal inversion distribution and close
And pseudo differential architectures.
6. the circuit structure of the envelope-tracking radio-frequency power amplifier according to claim 5, it is characterised in that：All institutes
Stating power amplifier includes being provided with numerically controlled nonlinear compensation biasing circuit.
7. a kind of envelope of the multi-frequency multi-mode of the envelope-tracking RF power amplifier circuit structure comprising described in claim 5
Tracking RF power amplifier circuit structure, it is characterised in that：The digital baseband passes through two-way D/A converters, wave filter
Connection quadrature modulator simultaneously and then connects respectively the low-frequency range amplifier module and high band amplifier mould by frequency switching
Block, the digital baseband connects the power supply modulator by D/A converters all the way, wave filter；The digital baseband passes through
All the way A/D converters, wave filter connection down coversion modulator simultaneously further connect antenna；The antenna is penetrated with the envelope-tracking
The output matching network of frequency power amplifier circuit is connected.
8. the envelope-tracking RF power amplifier circuit structure of the multi-frequency multi-mode according to claim 7, its feature exists
In：The power supply modulator is provided with the double resistive degeneration ripples with negative temperature coefficient compensation function and eliminates circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620335384.7U CN206099910U (en) | 2016-04-20 | 2016-04-20 | Circuit structure of RF power amplifier is trailed to envelope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620335384.7U CN206099910U (en) | 2016-04-20 | 2016-04-20 | Circuit structure of RF power amplifier is trailed to envelope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206099910U true CN206099910U (en) | 2017-04-12 |
Family
ID=58472211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620335384.7U Expired - Fee Related CN206099910U (en) | 2016-04-20 | 2016-04-20 | Circuit structure of RF power amplifier is trailed to envelope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206099910U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811893A (en) * | 2016-04-20 | 2016-07-27 | 广东工业大学 | Circuit structure of envelope tracking radio frequency power amplifier |
| CN108494372A (en) * | 2018-02-07 | 2018-09-04 | 南京中感微电子有限公司 | Nonlinear compensation power amplification circuit and polar coordinate transmitter |
-
2016
- 2016-04-20 CN CN201620335384.7U patent/CN206099910U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811893A (en) * | 2016-04-20 | 2016-07-27 | 广东工业大学 | Circuit structure of envelope tracking radio frequency power amplifier |
| CN105811893B (en) * | 2016-04-20 | 2019-05-21 | 广东工业大学 | A kind of circuit structure of envelope-tracking radio-frequency power amplifier |
| CN108494372A (en) * | 2018-02-07 | 2018-09-04 | 南京中感微电子有限公司 | Nonlinear compensation power amplification circuit and polar coordinate transmitter |
| CN108494372B (en) * | 2018-02-07 | 2021-10-26 | 南京中感微电子有限公司 | Nonlinear compensation power amplifying circuit and polar coordinate transmitter |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20180420 |
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| CF01 | Termination of patent right due to non-payment of annual fee |