CN110212879A - The transformers connected in parallel of rollback efficiency enhancing synthesizes power amplifier - Google Patents
The transformers connected in parallel of rollback efficiency enhancing synthesizes power amplifier Download PDFInfo
- Publication number
- CN110212879A CN110212879A CN201910416161.1A CN201910416161A CN110212879A CN 110212879 A CN110212879 A CN 110212879A CN 201910416161 A CN201910416161 A CN 201910416161A CN 110212879 A CN110212879 A CN 110212879A
- Authority
- CN
- China
- Prior art keywords
- power
- primary coil
- output
- power amplifier
- parallel
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/537—A transformer being used as coupling element between two amplifying stages
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The invention belongs to wireless communication technology field, specially a kind of transformers connected in parallel of rollback efficiency enhancing synthesizes power amplifier.Power amplifier of the invention includes transistor level active part and the passive network part based on transformers connected in parallel synthesis；Active part is realized using the power amplifier of the pure simulation of voltage-mode, numerical model analysis or all digital type；Passive part realizes parallel power synthesis, load impedance modulation and differential-to-single-ended conversion.Compared with envelope tracking power amplifier, power supply modulator module is eliminated, the processing capacity much higher than signal bandwidth is not needed for broadband application；Compared with the power amplifier of traditional rollback efficiency enhancing, does not need quarter-wave transmission line or multiple transformers do impedance transformation, it is only necessary to occupy single transformer area.Structure of the invention is succinct, area compact, and higher efficiency can be maintained in the output power range of 0-18dB, meets low cost, the high efficiency demand of the communications applications such as 5G.
Description
Technical field
The invention belongs to wireless communication technology fields, and in particular to a kind of power amplifier circuit.
Background technique
The rapid development of wireless communication technique greatly changes people's lives, supports that 2G/3G/4G/5G is mobile at present
The smart phone and tablet computer of the applications such as communication, wireless lan (wlan), bluetooth (Bluetooth) have become people day
The standard configuration often lived.As the user experience of electronic equipment is promoted, demand of the people to message transmission rate is higher and higher,
Wireless communication standard develops to broader bandwidth and more complicated modulation direction, such as 802.11ac/ax, LTE-A/LTE-pro, this gives nothing
The design of line transmitter especially radio-frequency power amplifier (PA) brings larger challenge.For example, the letter that 802.11ax standard is supported
Road bandwidth increases to 160MHz from the 40MHz of 802.11n, and modulation system is even more to increase to 1024QAM from 64QAM.Broader letter
More stringent requirements are proposed for the linearity performance of road bandwidth and more complicated modulation system to transmitter.In general, in order to meet compared with
Linearity when high transmitting power, PA need work in back-off state, cause emission effciency and sharply deteriorate.
Power amplifier is the Key Circuit module in radio frequency front end chip, and the mould of power consumption is most consumed in entire chip
Block.As CMOS technology is reduced to deep-submicron and nano-scale, radio frequency front end chip is gradually real with digital baseband chip
It is existing fully integrated, so that the cost of whole system significantly reduces.But it is limited to the high substrate loss of CMOS technology, low power supply electricity
The problems such as pressure, low breakdown voltage, the Research Challenges of the integrated always industry of efficient power amplifier.
Currently, academia and industry propose a variety of solutions in terms of efficient power amplifier both at home and abroad,
It is roughly divided into two classes: power modulation and load modulation.Power modulation technology includes envelope-tracking, the modulation of Class-G dual power supply etc..
Power modulation technology usually requires to realize a linear power supply modulator, can equally encounter efficiency and the linearity and compromise.This
Outside, broadband application proposes high requirement to the tracking velocity of power supply modulator.Doherty PA is a kind of load modulation technique,
It cooperates to change load impedance when different output power by master and slave PA, can be real in wider output power range
Existing higher efficiency.For the power combing and load change for realizing master and slave PA, it is four points integrated that Doherty PA usually requires on piece
One of wavelength transmission line or at least two transformers, thus expend biggish chip area, increase application cost.
Above-mentioned framework there are aiming at the problem that, the present invention propose it is a kind of based on transformers connected in parallel synthesis compact type power put
Big device structure.Compared with traditional rollback efficiency enhancement techniques, power amplifier proposed by the present invention is synthesized using transformers connected in parallel
Structure, it is only necessary to occupy single transformer area can be achieved with parallel power synthesis, load impedance modulation and it is differential-to-single-ended
Conversion.In addition to peak power point, also there are three additional rollback efficiency peak points for tool, to improve average emitted efficiency.
Summary of the invention
It is an object of the invention to propose a kind of transformers connected in parallel synthesis of inexpensive, efficient deep rollback efficiency enhancing
Power amplifier.
Transformers connected in parallel proposed by the present invention synthesizes power amplifier, has the characteristics that compact-sized, only takes up single change
Depressor area can be achieved with parallel power synthesis, load impedance modulation and differential-to-single-ended conversion.In addition to peak power point,
Also there are three additional rollback efficiency peak points for tool, improve average emitted efficiency and reduce chip area.
Transformers connected in parallel proposed by the present invention synthesizes power amplifier, simultaneously by transistor level active part and based on transformer
The passive network part composition being unified into；Wherein, active part uses the pure simulation of voltage-mode, numerical model analysis or all digital type
Power amplifier realize；Passive part completes power combing using transformers connected in parallel synthesizer, load impedance is modulated and poor
Assign to single-ended conversion.
In the present invention, active part include three identical difference PA(be denoted as PA2(111 respectively), PA3(112),
PA4(113)) and a PA1(110 that may be implemented from differential-to-single-ended work)；Passive network part is by transformers connected in parallel
Synthesizer (210) and matching circuit element (211) composition, matching circuit element (211) connect output loading (310)；Wherein, transformation
Device parallel synthesis device (210) includes primary coil 1, primary coil 2, primary coil 3, primary coil 4 and secondary coil, primary line
Circle 1, primary coil 2, primary coil 3 and primary coil 4 are coupled in parallel to secondary coil, the circle of primary coil and secondary coil
Optimal impedance of the number than depending on power amplifier；PA1(110) anode output and PA4(113) negative terminal output by just
Grade coil 1 is connected, PA4(113) anode output be connected with the output of the negative terminal of PA2(111) by primary coil 2, PA2
(111) anode output is connected with the output of the negative terminal of PA3(112) by primary coil 3, PA3(112) anode export and PA1
(110) negative terminal output is connected by primary coil 4 finally completes power combing at secondary coil, and passes through match circuit
Element (211) passes to output loading (310).
The power amplifier of rollback efficiency enhancing proposed by the present invention, there are four efficiency peak points for tool, are located at peak value
At power, 6dB back-off, 12dB back-off and 18dB back-off: when be in peak power when, PA1(110), PA2
(111), PA3(112) and PA4(113) fully open and in full amplitude of oscillation state, PA1(110 at this time), PA2(111), PA3
(100) and PA4(101) load impedance is identical；When being in 6dB rollback power, PA1(110) and PA2(111) fully open,
PA3(112 it completely closes) and PA4(113) and output is connected in high-impedance state and by the switch SW3 and SW4 of differential ends, this
When PA1(110) and 2 times when being increased to its peak power of load impedance PA2(111), output electric current is reduced to peak power
When 1/2, thus generate an additional 6dB rollback efficiency peak point；When being in 12dB back-off, PA1(110) completely
Open, PA2(111), PA3(112) and PA4(113) completely close and output is in high-impedance state and by the switch of differential ends
SW2, SW3 and SW4 conducting, at this time PA1(110) 4 times when being increased to its peak power of load impedance, output electric current is reduced to
When peak power 1/4 to generate an additional 12dB rollback efficiency peak point；When being in 18dB back-off, PA1
(110) difference anode branch fully open and negative terminal branch be connected to ground, PA2(111), PA3(112) and PA4(113) completely
Close and output be connected in high-impedance state and by switch SW2, SW3 and SW4 of differential ends, at this time PA1(110) load resistance
Resist 8 times when being increased to its peak power, 1/8 when output electric current is reduced to peak power is to generate an additional 18dB
Rollback efficiency peak point.
Therefore, when being in 6dB rollback power, the output work of the power amplifier of rollback efficiency enhancing proposed by the present invention
Rate and DC power are reduced to 1/4 when peak value, can produce an additional 6dB rollback efficiency peak point, referring to Fig. 3 institute
Show；When being in 12dB rollback power, the output power and direct current of the power amplifier of rollback efficiency enhancing proposed by the present invention
Power consumption is reduced to 1/16 when peak value, can produce an additional 12dB rollback efficiency peak point, shown in Figure 4；When
When in 18dB rollback power, the output power and DC power of the power amplifier of rollback efficiency enhancing proposed by the present invention are equal
It is reduced to 1/64 when peak value, can produce an additional 18dB rollback efficiency peak point, it is shown in Figure 5.With tradition
Class-B power amplifier is compared, and the power amplifier of transformers connected in parallel synthesis rollback efficiency enhancing proposed by the present invention is significant
Improve back-off efficiency, and higher efficiency can be maintained in wider output power range, thus meet NB-IoT,
The demand of the high peak-to-average power ratios communications applications such as LTE, WLAN, 5G.
The power amplifier of transformers connected in parallel power combing rollback efficiency enhancing proposed by the present invention has compact-sized
Feature, parallel power synthesis, load impedance modulation and differential-to-single-ended turn can be completed by only taking up single transformer area
It changes.According to impedance transformation ratio, there are many implementation, Fig. 6 to provide a kind of symmetrical reality for the transformers connected in parallel power combiner
Existing mode.Primary coil 1, primary coil 2, primary coil 3 and primary coil 4 have symmetry, PA1(110), PA2(111),
PA3(112 four symmetrical corners of transformers connected in parallel synthesizer) and PA4(113) are placed in, so that primary coil 1, primary coil
2, primary coil 3 and the same phase of 4 current direction of primary coil improve the primary coil quality of power combiner to enhance electromagnetism
The factor reduces loss.
Beneficial effect
Transformers connected in parallel proposed by the present invention synthesis rollback efficiency enhancement techniques power amplifier have the characteristics that it is compact-sized, only
Occupying single transformer area can be achieved with parallel power synthesis, load impedance modulation and differential-to-single-ended conversion.Except peak
It is worth outside power points, also there are three additional rollback efficiency peak points for tool, improve average emitted efficiency and reduce chip area.
The advantage of the invention is that eliminating power modulation compared with the envelope tracking power amplifier relatively mostly used at present
Device module does not need the processing capacity much higher than signal bandwidth for broadband application.Meanwhile enhancing skill with traditional rollback efficiency
The power amplifier of art is compared, and does not need quarter-wave transmission line or multiple transformers do impedance transformation, is only taken up single
Transformer area can be achieved with parallel power synthesis, load impedance modulation and differential-to-single-ended conversion.Therefore, the present invention mentions
Transformers connected in parallel synthesis rollback efficiency enhancement techniques power amplifier structure out is succinct, and area compact can be wider defeated
Higher efficiency is maintained in power bracket out, meet the high peak-to-average power ratios communications applications such as NB-IoT, LTE, WLAN, 5G low cost,
High efficiency demand.
Digital deep rollback power amplifier proposed by the present invention, provides effective solution side for radio frequency chip is fully integrated
Case especially suitable for the wireless communications application scene of low cost, such as can be used in digital emission system.
Detailed description of the invention
Fig. 1: transformers connected in parallel synthesizes power amplifier structure figure --- the peak power of rollback efficiency enhancing.
Fig. 2: transformers connected in parallel synthesizes power amplifier structure figure --- the 6dB rollback power of rollback efficiency enhancing.
Fig. 3: transformers connected in parallel synthesizes power amplifier structure figure --- the 12dB rollback power of rollback efficiency enhancing.
Fig. 4: transformers connected in parallel synthesizes power amplifier structure figure --- the 18dB rollback power of rollback efficiency enhancing.
Fig. 5: transformers connected in parallel synthesize rollback efficiency enhancing efficiency power amplifier curve and with traditional Class-B power
Amplifier compares.
Fig. 6: the implementation example of transformers connected in parallel power combiner.
Fig. 7: digital power amplifier is applied to digital transmitter system Sample Scenario.
Specific embodiment
As shown in Figure 1, transformers connected in parallel synthesizes rollback efficiency enhancement techniques power amplifier by active part and passive portion
It is grouped as.Active part include three identical difference PA, respectively PA2(111), PA3(112), PA4(113) and
One PA1(110 that may be implemented from differential-to-single-ended work)；Passive network part by transformers connected in parallel synthesizer (210) and
Matching circuit element (211) composition, matching circuit element (211) connect output loading (310)；Wherein, transformers connected in parallel synthesizer
It (210) include primary coil 1, primary coil 2, primary coil 3, primary coil 4 and secondary coil, primary coil 1, primary coil
2, primary coil 3 and primary coil 4 are coupled in parallel to secondary coil, and the turn ratio of primary coil and secondary coil depends on function
The optimal impedance of rate amplifier；PA1(110 anode output) is connected with the output of the negative terminal of PA4(113) by primary coil 1
Connect, PA4(113) anode output be connected with the output of the negative terminal of PA2(111) by primary coil 2, PA2(111) anode
Export and is connected with the output of the negative terminal of PA3(112) by primary coil 3, PA3(112) anode export and PA1(110) negative terminal
Output is connected by primary coil 4 finally completes power combing at secondary coil, and is passed by matching circuit element (211)
Pass output loading (310).When be in peak power when, PA1(110), PA2(111), PA3(112) and PA4(113) completely
Open and in full amplitude of oscillation state, at this time PA1(110), PA2(111), PA3(100) and load impedance PA4(101) it is identical.
As shown in Fig. 2, when being in 6dB rollback power, PA1(110) and PA2(111) fully open, PA3(112) and
PA4(113 it) completely closes and output is connected in high-impedance state and by the switch SW3 and SW4 of differential ends, at this time PA1(110)
And PA2(111) 2 times when being increased to its peak power of load impedance, output electric current is reduced to 1/2 when peak power, from
And generate an additional 6dB rollback efficiency peak point.
As shown in figure 3, when be in 12dB back-off when, PA1(110) fully open, PA2(111), PA3(112) and
PA4(113 it) completely closes and output is connected in high-impedance state and by switch SW2, SW3 and SW4 of differential ends, at this time PA1
(110) load impedance is increased to 4 times when its peak power, and 1/4 when output electric current is reduced to peak power is to generate
One additional 12dB rollback efficiency peak point.
As shown in figure 4, when be in 18dB back-off when, PA1(110) difference anode branch fully open and negative terminal branch
Road is connected to ground, PA2(111), PA3(112) and PA4(113) completely close and output in high-impedance state and passes through differential ends
Switch SW2, SW3 and SW4 conducting, PA1(110 at this time) 8 times when being increased to its peak power of load impedance, export electric current
When being reduced to peak power 1/8 to generate an additional 18dB rollback efficiency peak point.
As shown in figure 5, transformers connected in parallel synthesis proposed by the present invention retracts compared with traditional Class-B power amplifier
Efficiency enhancement techniques power amplifier has peak power, 6dB rollback power, 12dB rollback power and 18dB rollback power four
Efficiency peak point can maintain higher efficiency in very wide output power range, thus meet NB-IoT, LTE, WLAN,
The demand of the high peak-to-average power ratios communications applications such as 5G.
Embodiment
Transformers connected in parallel synthesis rollback efficiency enhancement techniques power amplifier structure proposed by the present invention is compact, only takes up list
A transformer area can be achieved with parallel power synthesizer.According to impedance transformation ratio, transformers connected in parallel power combiner has more
Kind implementation, Fig. 6 provide a kind of symmetrical implementation.Primary coil 1, primary coil 2, primary coil 3 and primary coil 4
With symmetry, PA1(110), PA2(111), PA3(112) and PA4(113) be placed in four of transformers connected in parallel synthesizer it is right
Claim corner, so that primary coil 1, primary coil 2, primary coil 3 and the same phase of 4 current direction of primary coil, to enhance electromagnetism,
The primary coil quality factor of power combiner is improved, loss is reduced.
In today of wireless communication technique and integrated circuit technology fast development, radio circuit is carried out using digitizing technique
Design has been irresistible trend, therefore digital deep rollback power amplifier proposed by the present invention is radio frequency chip complete or collected works
At effective solution scheme is provided, especially suitable for inexpensive wireless communications application scene.It is as shown in Figure 7 according to figure.From base
IQ digital signal with outflow needs not move through other additional processing, direct and baseband signal processing module (10) each mould
Block is connected, and IQ baseband signal first passes through digital pre-distortion block (11), and then connection up-sampling module (12), is passing through number
Word filter module (13), final signal are sent to polar coordinates conversion module (14) and carry out last conversion process, obtain institute
The range signal and phase signal needed, range signal pass through amplitude modulation module (20), and phase signal passes through phase-modulation mould
Block (21), final signal are directly connected with digital power amplifier proposed by the present invention (30), constitute complete digital hair
Penetrate system.
Therefore, the invention proposes a kind of low costs, the power of efficient transformers connected in parallel synthesis rollback efficiency enhancing
Amplifier only takes up single transformer area and realizes parallel power synthesis, load impedance modulation and differential-to-single-ended conversion.
In addition to peak power point, also there are three additional rollback efficiency peak points for tool, improve average emitted efficiency and reduce chip
Area.Compared with the envelope tracking power amplifier relatively mostly used at present, power supply modulator module is eliminated, broadband is answered
With not needing the processing capacity much higher than signal bandwidth.Compared with the power amplifier of traditional rollback efficiency enhancement techniques, it is not required to
Quarter-wave transmission line or multiple transformers is wanted to do impedance transformation, it is only necessary to occupy single transformer area.Therefore, of the invention
The transformers connected in parallel synthesis rollback efficiency enhancement techniques power amplifier structure of proposition is succinct, and area compact can be wider
Higher efficiency is maintained in output power range, suitable for the high peak-to-average power ratios communications applications such as NB-IoT, LTE, WLAN, 5G it is low at
Originally, high efficiency demand.
Claims (3)
1. a kind of transformers connected in parallel of rollback efficiency enhancing synthesizes power amplifier, which is characterized in that by the active portion of transistor level
Divide and the passive network part based on transformers connected in parallel synthesis forms；Wherein, active part uses the pure simulation of voltage-mode, digital-to-analogue
The power amplifier of mixing or all digital type is realized；Passive part is completed power combing using transformers connected in parallel synthesizer, is born
Carry impedance modulation and differential-to-single-ended conversion；Wherein:
Active part includes a three identical difference PA and difference PA1 that may be implemented from differential-to-single-ended work
(110), three difference PA are denoted as PA2(111 respectively), PA3(112), PA4(113)；It is closed by transformers connected in parallel passive network part
It grows up to be a useful person (210) and matching circuit element (211) composition, matching circuit element (211) connects output loading (310)；Wherein, transformer
Parallel synthesis device (210) includes the first primary coil (1), the second primary coil (2), third primary coil (3), the 4th primary line
Enclose (4) and secondary coil, the first primary coil (1), the second primary coil (2), third primary coil (3) and the 4th primary coil
(4) it is coupled in parallel to secondary coil, the turn ratio of four primary coils and secondary coil depends on the optimal of power amplifier
Impedance；PA1(110 anode output) is connected with the output of the negative terminal of PA4(113) by the first primary coil (1), PA4
(113) anode output is connected with the output of the negative terminal of PA2(111) by the second primary coil (2), PA2(111) anode it is defeated
Be connected out with the output of the negative terminal of PA3(112) by third primary coil (3), PA3(112) anode export and PA1(110)
Negative terminal output is connected by the 4th primary coil (4) finally completes power combing at secondary coil, and passes through match circuit
Element (211) passes to output loading (310).
2. power amplifier according to claim 1, which is characterized in that there are four efficiency peak points for tool, are located at peak
Be worth power, 6dB back-off, at 12dB back-off and 18dB back-off: when being in peak power, PA1(110), PA2
(111), PA3(112) and PA4(113) fully open and in full amplitude of oscillation state, PA1(110 at this time), PA2(111), PA3
(112) and PA4(113) load impedance is identical；When being in 6dB rollback power, PA1(110) and PA2(111) fully open,
PA3(112 it completely closes) and PA4(113) and output is in high-impedance state, and be connected by the switch SW3 and SW4 of differential ends,
PA1(110 at this time) and 2 times when being increased to its peak power of load impedance PA2(111), output electric current is reduced to peak work
1/2 when rate, to generate an additional 6dB rollback efficiency peak point；When being in 12dB rollback power, PA1(110) it is complete
Full open, PA2(111), PA3(112) and PA4(113) completely close and output is in high-impedance state, and opening by differential ends
Close SW2, SW3 and SW4 conducting, at this time PA1(110) 4 times when being increased to its peak power of load impedance, output electric current reduces
1/4 when for peak power, to generate an additional 12dB rollback efficiency peak point；When being in 18dB rollback power,
PA1(110 difference anode branch) fully opens and negative terminal branch is connected to ground, PA2(111), PA3(112) and PA4(113)
Completely close and output be in high-impedance state, and be connected by switch SW2, SW3 and SW4 of differential ends, at this time PA1(110)
Load impedance is increased to 8 times when its peak power, and 1/8 when output electric current is reduced to peak power is additional to generate one
18dB rollback efficiency peak point.
3. power amplifier according to claim 2, which is characterized in that be symmetric form: the first primary coil (1), the
Two primary coils (2), third primary coil (3) and the 4th primary coil (4) have symmetry, PA1(110), PA2(111),
PA3(112 four symmetrical corners of transformers connected in parallel synthesizer) and PA4(113) are placed in, so that the first primary coil (1),
Two primary coils (2), third primary coil (3) and the 4th same phase of primary coil (4) current direction are improved to enhance electromagnetism
The primary coil quality factor of power combiner reduces loss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910416161.1A CN110212879A (en) | 2019-05-20 | 2019-05-20 | The transformers connected in parallel of rollback efficiency enhancing synthesizes power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910416161.1A CN110212879A (en) | 2019-05-20 | 2019-05-20 | The transformers connected in parallel of rollback efficiency enhancing synthesizes power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110212879A true CN110212879A (en) | 2019-09-06 |
Family
ID=67787804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910416161.1A Pending CN110212879A (en) | 2019-05-20 | 2019-05-20 | The transformers connected in parallel of rollback efficiency enhancing synthesizes power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110212879A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113746432A (en) * | 2020-05-27 | 2021-12-03 | 电子科技大学 | Power amplifier and back-off efficiency improvement control method thereof |
| CN115051661A (en) * | 2022-08-15 | 2022-09-13 | 广东工业大学 | High-integration-level out-phase power amplifier based on dynamic power control |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015108492A1 (en) * | 2014-01-14 | 2015-07-23 | Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi | Doherty amplifier with a wideband in-phase power combiner |
| CN108649905A (en) * | 2018-04-20 | 2018-10-12 | 复旦大学 | Transformers connected in parallel synthesizes power amplifier |
-
2019
- 2019-05-20 CN CN201910416161.1A patent/CN110212879A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015108492A1 (en) * | 2014-01-14 | 2015-07-23 | Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi | Doherty amplifier with a wideband in-phase power combiner |
| CN108649905A (en) * | 2018-04-20 | 2018-10-12 | 复旦大学 | Transformers connected in parallel synthesizes power amplifier |
Non-Patent Citations (1)
| Title |
|---|
| LIANG XIONG, ET AL: "A Broadband Switched-Transformer Digital Power Amplifier for Deep Back-Off Efficiency Enhancement", 《2019 IEEE INTERNATIONAL SOLID-STATE CIRCUITS CONFERENCE（ISSCC）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113746432A (en) * | 2020-05-27 | 2021-12-03 | 电子科技大学 | Power amplifier and back-off efficiency improvement control method thereof |
| CN115051661A (en) * | 2022-08-15 | 2022-09-13 | 广东工业大学 | High-integration-level out-phase power amplifier based on dynamic power control |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104160550B (en) | Linear row array integrated power hybrider for RF power amplifier | |
| CN103795353B (en) | Include the RF front-end module circuit of effective high linearity power amplifier | |
| CN107204785B (en) | A kind of digital transmitter of configurable low-power consumption | |
| CN107040275A (en) | Radio circuit containing integrated harmonic filter and the radio circuit containing transistor | |
| Yin et al. | A compact dual-band digital polar Doherty power amplifier using parallel-combining transformer | |
| Qi et al. | Power up potential power amplifier technologies for 5G applications | |
| CN111416578B (en) | Broadband integrated Doherty power amplifier based on low Q output network | |
| CN106877828B (en) | Transformer quadrature synthesis power amplifier | |
| CN104170267B9 (en) | CMOS-based TX/RX switch | |
| CN104779922B (en) | For optimizing the high voltage envelope tracker of radio-frequency power amplifier performance | |
| Hung et al. | A quadrature class-G complex-domain Doherty digital power amplifier | |
| CN203406835U (en) | Power amplification device | |
| CN105811893B (en) | A kind of circuit structure of envelope-tracking radio-frequency power amplifier | |
| Shen et al. | A fully-integrated digital-intensive polar Doherty transmitter | |
| Bechthum et al. | A CMOS polar class-G switched-capacitor PA with a single high-current supply, for LTE NB-IoT and eMTC | |
| Yin et al. | A compact transformer-combined polar/quadrature reconfigurable digital power amplifier in 28-nm logic LP CMOS | |
| CN108649905A (en) | Transformers connected in parallel synthesizes power amplifier | |
| CN110212879A (en) | The transformers connected in parallel of rollback efficiency enhancing synthesizes power amplifier | |
| Lee et al. | Fully monolithic BiCMOS reconfigurable power amplifier for multi-mode and multi-band applications | |
| Choi et al. | Power amplifiers and transmitters for next generation mobile handsets | |
| CN111342787A (en) | Load modulation differential power amplifier, base station and mobile terminal | |
| Li et al. | A fully monolithic BiCMOS envelope-tracking power amplifier with on-chip transformer for broadband wireless applications | |
| Bechthum et al. | A CMOS polar single-supply class-G SCPA for LTE NB-IoT and Cat-M1 | |
| CN112019169A (en) | Broadband high-gain Doherty power amplifier and implementation method thereof | |
| Zhu et al. | A compact 2.4 GHz polar/quadrature reconfigurable digital power amplifier in 28nm logic LP CMOS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190906 |