CN105281692A - Radio-frequency power amplification control system and mobile terminal - Google Patents
Radio-frequency power amplification control system and mobile terminal Download PDFInfo
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- CN105281692A CN105281692A CN201410309075.8A CN201410309075A CN105281692A CN 105281692 A CN105281692 A CN 105281692A CN 201410309075 A CN201410309075 A CN 201410309075A CN 105281692 A CN105281692 A CN 105281692A
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Abstract
The invention relates to the technical field of electronic communication, in particular to a radio-frequency power amplification control system. The radio-frequency power amplification control system comprises a radio-frequency chip, a power amplifier, a baseband chip and an amplification unit, wherein the radio-frequency chip is used for converting a modulated signal into a radio-frequency signal; the power amplifier is connected with the radio-frequency chip, and amplifies the radio-frequency signal according to a set parameter then to be transmitted via an antenna; the baseband chip is connected with the radio-frequency chip, and is used for outputting the modulated signal; the baseband chip is further connected with the power amplifier and used for generating a control signal to adjust the set parameter; and the amplification unit is connected between the baseband chip and the power amplifier, and is used for amplifying the control signal. The radio-frequency power amplification control system can adjust the control signal of the power amplifier flexibly, so as to meet the requirements of a control circuit inside the power amplifier for voltage amplitude.
Description
Technical field
The present invention relates to technical field of electronic communication, be specifically related to a kind of radio-frequency power amplification control system.
Background technology
Current, the core component that the communications portion of mobile communication terminal comprises has baseband chip, radio frequency chip, power amplifier etc., when needing to transmit, IQ (the In-phaseQuadrature modulated, inphase quadrature) analog signal exports by baseband chip, in radio frequency chip, be processed into radiofrequency signal, and be finally amplified to power demand via antenna transmission by power amplifier.Carrying out correct control to power amplifier is a vital link, need the gain, frequency range etc. that control power amplifier, control signal is provided by baseband chip, need that there is certain amplitude, but constantly reduce along with live width in baseband chip manufacturing process, the baseband chip under less live width processing procedure is difficult to export the control signal meeting and control power amplifier needs.
Summary of the invention
The object of the invention is to, a kind of system of flexible Modulating Power amplifier is provided, solves above technical problem.
Technical problem solved by the invention can realize by the following technical solutions:
A kind of radio-frequency power amplification control system, wherein, comprises,
Radio frequency chip, for being converted to radiofrequency signal by signal after modulation;
Power amplifier, is connected with described radio frequency chip, and after amplifying described radiofrequency signal according to setup parameter, warp is by antenna transmission;
Baseband chip, is connected with described radio frequency chip, for exporting signal after described modulation; Described baseband chip is also connected with described power amplifier, for generation of a control signal to adjust described setup parameter;
Amplifying unit, is connected between described baseband chip and described power amplifier, for amplifying described control signal.
Preferably, described amplifying unit adopts programmable gain amplifier, amplifies a setting multiple according to the amplitude of described control signal and/or the demand of described power amplifier to described control signal.
Preferably, described baseband chip comprises a digital to analog converter, and described digital to analog converter is in order to export described control signal to described power amplifier.
Preferably, described setup parameter comprises gain and/or frequency range.
Preferably, described power amplifier comprises a control circuit, adjusts described setup parameter under the described control signal effect of described control circuit after amplifying.
Preferably, described baseband chip adopts the baseband chip of the following live width processing procedure of 20nm size.
The present invention also provides a kind of mobile terminal, comprises above-mentioned radio-frequency power amplification control system.
Beneficial effect: owing to adopting above technical scheme, the control signal of the power amplifier that the present invention can adjust flexibly, to meet the demand of the voltage amplitude of power amplifier internal control circuit.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present invention;
Fig. 2 is the controlling brancher schematic diagram that baseband chip of the present invention controls power amplifier.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of protection of the invention.
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.
The control signal of prior art is that baseband chip inside generates, and to be converted to after analog signal direct supply power amplifier by internal mode number converter.When the analogue signal amplitude exported is not enough, the voltage amplitude demand of the control circuit of power amplifier inside just cannot be met.And it is current for improving performance, reducing the consideration of power consumption, the technological level of baseband chip improves constantly, manufacturing process constantly reduces, be reduced to 40nm, 28nm even 20nm processing procedure at present, the operating voltage that this development trend result in baseband chip constantly reduces, thus the control signal amplitude of external output reduces, and the maximum voltage that such as, under 20nm technique baseband chip exports is 1.8V.According to this trend, the baseband chip in the future under less live width processing procedure is difficult to export the control signal meeting and control power amplifier needs.In order to the baseband chip solving little live width processing procedure exports that analog control signal amplitude is too low cannot the problem of Driver amplifier internal control circuit.
The invention provides a kind of radio-frequency power amplification control system, with reference to Fig. 1, comprise,
Radio frequency chip 2, for being converted to radiofrequency signal by signal after modulation;
Power amplifier 3, is connected with radio frequency chip 2, through being launched by antenna 5 after amplifying according to setup parameter radio frequency signal;
Baseband chip 1, is connected with radio frequency chip 2, for exporting the rear signal of modulation; Baseband chip 1 is also connected with power amplifier 3, for generation of a control signal to adjust setup parameter;
Amplifying unit, is connected between baseband chip 1 and power amplifier 3, for amplifying control signal.
As a kind of preferred embodiment of the present invention, amplifying unit adopts programmable gain amplifier (PGA, ProgrammableGainAmplifier) 4, the requirement according to the voltage amplitude of amplitude and power amplifier 3 pairs of control signals of control signal amplifies a setting multiple to control signal.The amplitude of the control signal after amplifying as made reaches about 2.3V.
As a kind of preferred embodiment of the present invention, setup parameter comprises gain and/or frequency range.
With reference to Fig. 2, as a kind of preferred embodiment of the present invention, baseband chip 1 comprises a digital to analog converter, and digital to analog converter is in order to export control signal to power amplifier 3.
With reference to Fig. 2, as a kind of preferred embodiment of the present invention, power amplifier 3 comprises a control circuit 31, adjusts setup parameter under the control signal effect of control circuit 31 after amplifying.
As a kind of preferred embodiment of the present invention, baseband chip 1 adopts the baseband chip 1 of small size live width processing procedure.The baseband chip 1 of live width processing procedure as following in 20nm size.
The present invention also provides a kind of mobile terminal, comprises above-mentioned radio-frequency power amplification control system.
The control signal that the present invention can export baseband chip 1 amplifies certain multiple, and the voltage magnitude of the control signal of flexible Modulating Power amplifier 3, to meet the demand of power amplifier 3 internal control circuit.The analog control signal that baseband chip 1 exports is before input power amplifier 3, first amplified by programmable gain amplifier 4, multiplication factor is configurable, determined by the output amplitude of baseband chip 1 and the demand of power amplifier 3, such as multiplication factor is 2 times, analog control signal is via after amplification, and the control circuit of input power amplifier 3, controls the configuration such as gain, frequency range of power amplifier 3.
The present invention is by the analog to digital converter (DAC at baseband chip 1, DigitaltoAnalogConverter) 11 outsides add programmable gain amplifier 4, the voltage amplitude of the control signal of flexible Modulating Power amplifier 3, to meet the demand of power amplifier 3 internal control circuit voltage amplitude.The control signal amplitude that the baseband chip that can solve little live width processing procedure exports is too low cannot the problem of Driver amplifier internal control circuit.
The foregoing is only preferred embodiment of the present invention; not thereby embodiments of the present invention and protection range is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilizations specification of the present invention and diagramatic content and apparent change obtain in protection scope of the present invention.
Claims (7)
1. a radio-frequency power amplification control system, is characterized in that, comprises,
Radio frequency chip, for being converted to radiofrequency signal by signal after modulation;
Power amplifier, is connected with described radio frequency chip, and after amplifying described radiofrequency signal according to setup parameter, warp is by antenna transmission;
Baseband chip, is connected with described radio frequency chip, for exporting signal after described modulation; Described baseband chip is also connected with described power amplifier, for generation of a control signal to adjust described setup parameter;
Amplifying unit, is connected between described baseband chip and described power amplifier, for amplifying described control signal.
2. a kind of radio-frequency power amplification control system according to claim 1, it is characterized in that, described amplifying unit adopts programmable gain amplifier, amplifies a setting multiple according to the amplitude of described control signal and described power amplifier to the voltage magnitude requirement of control signal to described control signal.
3. a kind of radio-frequency power amplification control system according to claim 1, it is characterized in that, described baseband chip comprises a digital to analog converter, and described digital to analog converter is in order to export described control signal to described power amplifier.
4. a kind of radio-frequency power amplification control system according to claim 1, it is characterized in that, described setup parameter comprises gain and/or frequency range.
5. a kind of radio-frequency power amplification control system according to claim 1, it is characterized in that, described power amplifier comprises a control circuit, adjusts described setup parameter under the described control signal effect of described control circuit after amplifying.
6. a kind of radio-frequency power amplification control system according to claim 1, is characterized in that, described baseband chip adopts the baseband chip of the following live width processing procedure of 20nm size.
7. a mobile terminal, is characterized in that, comprises radio-frequency power amplification control system according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309075.8A CN105281692A (en) | 2014-06-30 | 2014-06-30 | Radio-frequency power amplification control system and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309075.8A CN105281692A (en) | 2014-06-30 | 2014-06-30 | Radio-frequency power amplification control system and mobile terminal |
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| CN105281692A true CN105281692A (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410309075.8A Pending CN105281692A (en) | 2014-06-30 | 2014-06-30 | Radio-frequency power amplification control system and mobile terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111830540A (en) * | 2019-04-15 | 2020-10-27 | 江苏星宇芯联电子科技有限公司 | Ultralow-power-consumption Beidou RDSS navigation chip based on artificial intelligence technology |
| CN112769504A (en) * | 2021-01-25 | 2021-05-07 | 展讯通信（上海）有限公司 | Transmission power calibration method, electronic device, and storage medium |
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| CN1443395A (en) * | 2000-05-05 | 2003-09-17 | 艾利森电话股份有限公司 | Apparatus and method for efficiently amplifying wideband envelope signals |
| CN1473395A (en) * | 2000-08-30 | 2004-02-04 | �칤������˾ | System for closed loop power control using linear or non-linear power amplifier |
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| CN101167324A (en) * | 2005-04-29 | 2008-04-23 | 诺基亚公司 | Reconfigurable transmitter with direct digital to RF modulator |
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| CN112769504A (en) * | 2021-01-25 | 2021-05-07 | 展讯通信（上海）有限公司 | Transmission power calibration method, electronic device, and storage medium |
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Application publication date: 20160127 |
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