CN101009714A - Variable power adaptive transmitter - Google Patents
Variable power adaptive transmitter Download PDFInfo
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- CN101009714A CN101009714A CN 200710002906 CN200710002906A CN101009714A CN 101009714 A CN101009714 A CN 101009714A CN 200710002906 CN200710002906 CN 200710002906 CN 200710002906 A CN200710002906 A CN 200710002906A CN 101009714 A CN101009714 A CN 101009714A
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Abstract
The invention discloses a kind of circuit comprising a postpone module, a first data switcher, an analogue output circuit, an envelope-generating module and a power-adjusting module. The postpone module receives digital emission signals and generates a postponed emission signal. The first data switcher switches the postponed emission signal to an analogue emission signal. The analogue output circuit amplifies the analogue emission signal. The envelope-generating module generates an envelope signal according to the amplitude information in the digital emission signal. The power-adjusting module supplies referent power voltage when the envelope signal is lower than a threshold value, and raises a bias voltage of the analogue output circuit higher than the referent power voltage when the envelope signal is higher than the threshold value.
Description
Technical field
The present invention relates to communication system, relate in particular to the reflector in network interface and other equipment.
Background technology
With reference now to Fig. 1,, shown example networks 10 comprise one or more Wireless Communication Equipment 20-1,20-2 ... and 20-X (general name Wireless Communication Equipment 20) and/or one or more cable network equipment 24-1,24-2 ... and 24-Y (general name cable network equipment 24).Wireless Communication Equipment 20 wirelessly with access point 30 exchange data packets.Cable network equipment 24 on cable, optical fiber or other media with router four 0 exchange data packets.Access point 30 is also communicated by letter with router four 0.Mountain, road device 40 is communicated by letter with broadband modem 44 again, and broadband modem 44 is communicated by letter with service provider 48.Service provider 48 provides again the access such as the distributed communication network 50 of internet.
With reference now to Fig. 2,, shows example wireless network equipment 20.Wireless Communication Equipment 20 generally comprises main frame 58 and radio network interface 60.Radio network interface 60 generally comprises radio physical layer device (PHY) 62, and radio physical layer device 62 comprises transceiver 64, and transceiver 64 comprises reflector 66 and receiver 68.Radio network interface 60 also comprises MAC controller (MAC) 70 and/or miscellaneous part (not shown).
With reference now to Fig. 3,, shows exemplary cable network equipment 24.Cable network equipment 24 generally comprises main frame 78 and wired network interface 80.Wired network interface 80 generally comprises wired physical layer device (PHY) 82, and wired physical layer device 82 comprises transceiver 84, and transceiver 84 comprises reflector 86 and receiver 88.Wired network interface 80 also comprises MAC controller (MAC) 90 and/or miscellaneous part (not shown).
As mentioned above, during use, reflector 66 and 86 receives the data that will transmit on medium separately.The supply voltage of network interface may cause some restrictions to reflector 66 and 86 dynamic ranges with respect to reference voltage, and described reference voltage is used to the reflector power supply.
With reference now to Fig. 4 and Fig. 5,, reflector 66 among Fig. 2 and Fig. 3 and 86 general receptions can be at+V
sWith-V
sBetween the swing supply voltage.In this case, V
sBe less than or equal to such as V
DdSupply voltage.Yet, in the time will being higher than the voltage swing of supply voltage by the amplitude of the launcher signal of reflector 100 output, amplitude limit may take place, for example 110 among Fig. 5 and 112 places.Increase supply voltage and will reduce amplitude limit.Yet, increase the power consumption that supply voltage also will increase equipment.
Summary of the invention
Transmitting after a kind of circuit that comprises Postponement module, described Postponement module receive digitally transmitted signals and produce delay.Transmitting after first digital to analog converter will postpone is converted to analog transmit signal.Analog output circuit amplifies analog transmit signal.The envelope generation module produces envelope signal based on the amplitude information relevant with digitally transmitted signals.The power supply adjusting module envelope signal less than threshold value time supply reference voltage, the bias voltage of amplifier is boosted to more than the reference voltage during at envelope signal greater than threshold value.
In other features, second digital to analog converter is converted to analogue envelope signal with envelope signal.First digital to analog converter has higher resolution than the second number transducer.The 3rd digital to analog converter receives envelope signal and optionally increases bias current for amplifier.Bias current increases when envelope signal surpasses threshold value.Radio network interface is deferred at least one among ieee standard 802.11,802.11a, 802.11b, 802.11g, 802.11h, the 802.11n, 802.16 and 802.20.
A kind of circuit that comprises analog output module, described analog output module receives offset signal and control signal.First signal after Postponement module receives first signal and produces delay.First signal behind the control module receive delay also produces control signal based on first signal after postponing.The envelope generation module receives and to comprise the secondary signal of the amplitude information relevant with first signal and to produce envelope signal, and this envelope signal optionally increases the offset signal that is fed to analog output module when envelope signal surpasses predetermined threshold and receive the appropriate section of first signal at analog output module before.
In other features, first signal comprises digitally modulated carrier signal.Rectifier module carries out rectification and the modulated carrier signal after the rectification is outputed to the envelope generation module digitally modulated carrier signal.Digital to analog converter is converted to analogue envelope signal with envelope signal.The rise time of envelope signal is slower than the fast attack time of first signal.Analog output module comprises power amplifier.Control module comprises transmitter module.
In other features, switch is connected with first reference voltage and is controlled by the envelope generation module.Electric capacity is connected with switch with the output of envelope generation module.Inductance is connected with electric capacity with analog output module.Matching network is communicated by letter with analog output module.Antenna is communicated by letter with matching network.The envelope generation module receives first signal and produces envelope signal based on first signal.Delay circuit postpones modulated carrier signal.Modulated carrier signal after upconverter will postpone carries out up-conversion.
A kind of circuit that comprises the analogue output unit that is used to receive offset signal and control signal.First signal after deferred mount receives first signal and produces delay.First signal behind the control device receive delay also produces control signal based on first signal after postponing.The envelope generation device receives and to comprise the secondary signal of the amplitude information relevant with first signal and to produce envelope signal, and this envelope signal optionally increases the offset signal that is fed to analogue output unit when envelope signal surpasses predetermined threshold and receive the appropriate section of first signal at analogue output unit before.
In other features, first signal comprises digitally modulated carrier signal.Rectifier unit carries out rectification and the digitally modulated carrier signal after the rectification is outputed to the envelope generation device digitally modulated carrier signal.Digiverter is converted to analogue envelope signal with envelope signal.The rise time of envelope signal is slower than the fast attack time of first signal.Analogue output unit comprises the power amplifier device that is used to amplify.Control device comprises the emitter that is used to launch.The switching device that is used for switch is connected with first reference voltage and is controlled by the envelope generation device.Capacitive means provides electric capacity and is connected with switching device with the output of envelope generation device.Inductance device provides inductance and is connected with analogue output unit with capacitive means.
In other features, the matching network device that is used to mate is connected with analogue output unit.Antenna is connected with the matching network device.The envelope generation device receives first signal and produces envelope signal based on first signal.Deferred mount postpones modulated carrier signal.Modulated carrier signal after means of upconversion will postpone carries out up-conversion.
A kind of method comprises: receive offset signal and control signal at the analog output module place; Receive and postpone first signal; Produce control signal based on first signal after postponing; Reception comprises the secondary signal of the amplitude information relevant with first signal; And producing envelope signal based on secondary signal, this envelope signal optionally increases the offset signal that is fed to analog output module when envelope signal surpasses predetermined threshold and receive the appropriate section of first signal at analog output module before.
In other features, first signal comprises digitally modulated carrier signal.Described method comprises carries out rectification and the digitally modulated carrier signal after the rectification is outputed to the envelope generation module digitally modulated carrier signal.Described method comprises envelope signal is converted to analogue envelope signal.The rise time of envelope signal is slower than the fast attack time of first signal.Described method also comprises based on first signal generation envelope signal.Described method comprises that also the modulated carrier signal after modulated carrier signal postponed and will postpone carries out up-conversion.
Other adaptability fields of the present invention will become clear from the following message semantic definition that provides.Should recognize,, only be to be used for task of explanation, and be not intended to limit the scope of the invention though these are described in detail and concrete example has been indicated the preferred embodiments of the present invention.
Description of drawings
From detailed description and drawings, will more fully understand the present invention, wherein:
Fig. 1 is the functional block diagram according to the example wireless network of prior art;
Fig. 2 is the functional block diagram of the example wireless network equipment of Fig. 1;
Fig. 3 is the functional block diagram of the exemplary cable network equipment of Fig. 1;
Fig. 4 is by the functional block diagram according to the reflector of the voltage fed of prior art;
Fig. 5 is the example waveform of the wireless signal launched by the reflector of Fig. 4;
Fig. 6 A and Fig. 6 B are the functional block diagrams according to exemplary adaptive transmitter of the present invention;
Fig. 7 A is the exemplary functional block diagram and the circuit diagram of power supply adjusting module;
Fig. 7 B is the exemplary functional block diagram and the circuit diagram of asymmetric power supply adjusting module;
Fig. 7 C is the exemplary functional block diagram and the circuit diagram of symmetrical powering adjusting module;
Fig. 8 A shows the waveform that boosts of symmetry;
Fig. 8 B show envelope signal than the slow signal rise time;
Fig. 8 C shows the asymmetric waveform that boosts;
Fig. 9 is the exemplary functional block diagram with the exemplary RF amplifier that boosts;
Figure 10 A is the functional block diagram and the circuit diagram of another exemplary adaptive transmitter;
Figure 10 B shows the waveform that boosts after the rectification;
Figure 11 A is an exemplary implementation of the present invention in the access to netwoks memory module;
Figure 11 B is an exemplary implementation of the present invention in the digital versatile disc driver;
Figure 11 C is an exemplary implementation of the present invention in high definition TV;
Figure 11 D be with WLAN devices that vehicle is associated in exemplary implementation of the present invention;
Figure 11 E is an exemplary implementation of the present invention in cell phone;
Figure 11 F is an exemplary implementation of the present invention in set-top box; And
Figure 11 G is an exemplary implementation of the present invention in media player.
Embodiment
It in fact only is exemplary below describing, and wishes never to limit that it is open, uses or uses.For the sake of clarity, will use identical label to identify similar elements in the accompanying drawings.Here employed term module, circuit and/or device refer to processor (shared processing device, application specific processor or processor group) and memory, the combinational logic circuit of application-specific integrated circuit (ASIC) (ASIC), electronic circuit, the one or more softwares of execution or firmware program and/or other suitable components of described function are provided.The meaning of employed here phrase " at least one among A, B and the C " should be interpreted as using the logic (A or B or C) of nonexcludability (non-exclusive) logic OR.Should recognize that the step in a kind of method can carry out with different orders, and not change principle of the present invention.
Referring now to Fig. 6 A and Fig. 6 B, show according to adaptive transmitter 150-1 of the present invention and 150-2 (general name adaptive transmitter 150).The parts of adaptive transmitter 150 receive reference voltage V
sDifferent with legacy system is reference voltage V
sCan be temporarily greater than supply voltage V
DdTherefore, some parts in the reflector can temporarily be driven to such an extent that be higher than supply voltage V
Dd,, keep low relatively power consumption simultaneously to avoid amplitude limit and to increase dynamic range.
In Fig. 6 A, adaptive transmitter 150-1 comprises digital signal processor (DSP) 152, and what digital signal processor 152 outputs will be launched transmits.Postponement module 154 will transmit and postpone predetermined time of delay and/or adjustable variable delay time.Transmitting after digital to analog converter 158 will postpone is converted to analog transmit signal.Analog transmit signal is output to the analog output circuit such as amplifier 162, and amplifier 162 amplifies analog transmit signal.Though show an amplifier, can use any analog output circuit that needs bias voltage.
When envelope signal during less than threshold signal, power supply adjusting module 174 supply V
s=V
DdWhen envelope signal during greater than threshold signal, power supply adjusting module 174 is temporarily with V
sBoost to V
DdMore than.Booster voltage V
BoostAllow the amplifier tracking in the reflector to transmit, and do not carry out amplitude limit to transmitting.The delay that is provided by Postponement module 154 allows power supply adjusting module 174 to produce V
sBoost to V
DdMore than needed other voltage.Digital to analog converter 158 can have higher resolution and/or bandwidth than digital to analog converter 172.
Can know that the envelope signal generator does not need to receive the signal identical with the Postponement module 154 shown in Fig. 6 A and D/A converter 158.For example, the amplitude information that digital signal processor 152 can will be referred to digital signal outputs to the envelope signal generator, and will transmit (comprising other information) outputs to Postponement module 154 and D/A converter 158.Also can use the signal of other types.
With reference now to Fig. 7 A-7C and Fig. 8 A-8C,, show exemplary power supply adjusting module 174, it comprises switch S
BoostWith boost capacitor C
Boost, boost capacitor C
BoostReceive booster voltage from digital to analog converter 172.When envelope signal during less than threshold signal, switch S
BoostClose power supply adjusting module 174 supply V
s=V
DdWhen envelope signal during greater than threshold signal, switch S
BoostOpen power supply adjusting module 174 supply V
s=V
Dd+ V
BoostBe stored in capacitor C
BoostIn energy will provide bias voltage and/or electric current to amplifier and/or other analog output circuits.In Fig. 8 A, booster voltage is temporarily with the voltage (V that is supplied
s) increase to V
DdMore than, and reduce or prevent amplitude limit to launcher signal.
In Fig. 7 B, digital signal is output to positive envelope generation module 176 and the negative envelope generation module 177 that produces positive envelope signal and negative envelope signal respectively.The output of positive envelope generation module 176 and negative envelope generation module 177 is imported into digital to analog converter (DAC) 178 and 179 respectively. DAC 178 and 179 output respectively with positive boost capacitor C
Boost+With negative boost capacitor C
Boost-Connect.Switch 181-1 and 181-2 are operated as described above optionally to use V
DdOr booster voltage pair amplifier 180 is setovered.
In Fig. 7 C, digital signal is supplied to the rectifier 182 (or absolute value circuit) that signal is carried out rectification.If the use absolute value circuit, then absolute value circuit optionally the reindexing position so that absolute value to be provided.Envelope module outputs to DAC 184 and 185 with positive envelope signal and negative envelope signal respectively. DAC 184 and 185 output respectively with positive boost capacitor C
Boost+With negative boost capacitor C
Boost-Connect.Switch 186-1 and 186-2 are operated as described above optionally to use V
DdOr booster voltage pair amplifier 187 is setovered.
Circuit among Fig. 7 B produces the waveform that boosts of the symmetry shown in Fig. 8 A.In Fig. 8 A and Fig. 8 B, launcher signal 190 has higher bandwidth than envelope signal 192.Envelope signal 192 prediction launcher signals 190.In other words, envelope signal 192 is not the situation as the conventional peak envelope detector signal shown in 188, only follows the increase of launcher signal 190.On the contrary, envelope signal 192 begins to increase when predicting the increase of launcher signal 190, and can have higher amplitude than traditional peak envelope detector signal.In addition, the bandwidth of envelope signal 192 is lower than the bandwidth of launcher signal 190.In other words, the rise time of envelope signal 192 is greater than the fast attack time of launcher signal 190.Say that in another way the inclination 197 of the envelope signal among Fig. 8 A will be less than corresponding (and delay) inclination 196 partly of launcher signal 190.The envelope signal that use has faster response or step response (for example response shown in 199 among Fig. 8 B) may will cause high-frequency noise.
In Fig. 8 C, showing can be by the asymmetric waveform of the generation of the circuit among Fig. 7 C.For the positive part and the negative part of signal, the difference of boosting that is produced.Therefore, the also possible difference of positive negative bias voltage that is used for differential amplifier.
With reference now to Fig. 9,, can realize adaptive transmitter 200 at the RF amplifier that is used for wireless launcher.The parts of adaptive transmitter 200 receive supply voltage V
DdYet some parts in the reflector can temporarily be driven to such an extent that be higher than supply voltage V
Dd Digital transmission modulator 202 will transmit and output to Postponement module 154 and rectifier 201 (or absolute value block), and rectifier 201 outputs to envelope module 170 with the digital signal after the rectification.Transmitting after digital to analog converter 158 will postpone is converted to analog transmit signal.Analog transmit signal is output to the upconverter 204 of signal being carried out up-conversion.Signal after the up-conversion is output to the amplifier 162 that signal is amplified.
When envelope signal during less than threshold signal, power supply adjusting module 174 supply V
s=V
DdWhen envelope signal during greater than threshold signal, power supply adjusting module 174 is temporarily with V
sBoost to V
DdMore than.The delay that is provided by Postponement module 154 allows power supply adjusting module 174 to produce V
sBoost to V
DdMore than needed other voltage.Digital to analog converter 208 also receives envelope signal and produces the RF bias current.Bias current optionally pair amplifier 162 is setovered.Can when being provided, booster voltage provide bias current, and/or described bias current can constantly provide the adaptability bias current to amplifier 162.Adjustment flows to the RF bias current of amplifier to bias adjusting module 210 based on envelope signal.
Suitable applications comprises Wireless Communication Equipment and cable network equipment.The network equipment can be VDSL or VDSL2 compatibility.Wireless Communication Equipment can be deferred to ieee standard 802.11,802.11a, 802.11b, 802.11g, 802.11h, 802.11n, 802.16 and 802.20 and/or defer to bluetooth and cell phone, for example defers to the standard of GSM 4G.
With reference now to Figure 10 A-10B,, transmitter circuit 240 comprises digital signal processor (DSP) 242, and digital signal processor 242 produces first signal and the modulated carrier signal that comprises amplitude information.Rectifier 244 (or absolute value circuit) carries out rectification to signal, and signal is outputed to envelope maker module 246, and envelope maker module 246 produces envelope signal as described above.DAC250 is converted to analogue envelope signal with envelope signal, and at capacitor C
BoostLast generation booster voltage V
Boost Envelope maker module 246 also produces the control signal that optionally opens and closes switch 258, and switch 258 is connected to V
DdThis switch is operated as described above.
Modulated carrier signal after Postponement module 255 receives modulated carrier signal and produces delay.Signal after upconverter module 256 will postpone carries out up-conversion.Reflector 257 produces the control signal of the control end that is used for power amplifier 264 based on the modulated carrier signal after postponing.Inductance 260 can be connected boost capacitor C
BoostAnd between first end of power amplifier 264.Matching network 266 is coupled to described first end and antenna 268.In Figure 10 B, as shown in the figure, digitally transmitted signals is carried out rectification (for example at 300 places), and produce analogue envelope signal.The bias voltage of amplifier increases to V as required
DdMore than to prevent amplitude limit.
With reference now to Figure 11 A-11G,, shows various exemplary implementation of the present invention.With reference now to Figure 11 A,, the present invention can realize in comprising the access to netwoks memory module (NAS) 901 of hard disk drive 900.The present invention can realize wireless network interface modules and/or can realize the present invention that in wireless network interface modules general 904 places in Figure 11 A identify wireless network interface modules.In some implementations, signal processing among the HDD 900 and/or control circuit 902 and/or other circuit (not shown) can deal with data, communicate by letter, encode and/or encrypt, calculate with module 904 and/or the data that output to magnetic storage medium 906 and/or receive from magnetic storage medium 906 are formatd.
HDD 900 can communicate by letter with another networked devices (not shown) via one or more wire links 908 and/or module 904, and described networked devices for example is computer, the mobile computing device such as personal digital assistant, cell phone, media player or MP3 player etc. and/or other equipment.HDD 900 can be connected to memory 909, and described memory 909 for example is random-access memory (ram), the low delay nonvolatile memory such as flash memory, read-only memory (ROM) and/or other suitable electronic data storage.HDD 900 can also comprise power module 903.
With reference now to Figure 11 B,, the present invention can realize in digital versatile disc (DVD) driver 910.The present invention can realize wireless network interface modules and/or can realize the present invention in wireless network interface modules, generally identifies wireless network interface modules at 911 places of Figure 11 B.Signal processing in the DVD driver 910 and/or control circuit 912 and/or other circuit (not shown) can deal with data, encode and/or encrypt, calculate and/or data that read from optical storage media 916 and/or the data that are written to optical storage media 916 are formatd.In some implementations, signal processing in the DVD driver 910 and/or control circuit 912 and/or other circuit (not shown) can also be carried out other functions, for example encode and/or decode and/or any other signal processing function relevant with the DVD driver.
DVD driver 910 can be communicated by letter with the output equipment (not shown) such as computer, TV or other equipment via Radio Link via one or more wire links 917 and/or by module 911.DVD driver 910 can be communicated by letter with the Mass Data Storage Facility 918 with the non-volatile storage data.Mass Data Storage Facility 918 can comprise hard disk drive (HDD).HDD can have the configuration shown in Figure 11 A.HDD comprises one or more " small-sized HDD of the disc of diameter that have less than about 1.8.DVD driver 910 can be connected to memory 919, and described memory 919 for example is RAM, ROM, the low delay nonvolatile memory such as flash memory and/or other suitable electronic data storage.DVD driver 910 can also comprise power supply 913.
With reference now to Figure 11 C,, the present invention can realize in high definition TV (HDTV) 920.The present invention can realize signal processing and/or control circuit and wireless network interface modules 929 the two one of or realize the two, and/or can signal processing and/or control circuit and wireless network interface modules 929 the two one of in or realize in the two the present invention generally identifying signal processing and/or control circuit at 922 places of Figure 11 C.
With reference now to Figure 11 D,, the present invention can realize the wireless network interface modules 948 of vehicle 930, and/or can realize the present invention in the wireless network interface modules 948 of vehicle 930.Power transmission (powertrain) control system 932 receives from one or more transducers and imports and/or produce one or more output control signals, described transducer for example is temperature sensor, pressure sensor, rotation sensor, pneumatic sensor and/or any other right sensors, and described output control signal for example is engine operation parameter, transmission operating parameter and/or other control signals.
Power transmission control system 932 can be communicated by letter with the Mass Data Storage Facility 946 with the non-volatile storage data.Mass Data Storage Facility 946 can comprise light and/or magnetic storage apparatus, for example hard disk drive HDD and/or DVD.At least one HDD can have the configuration shown in Figure 11 A and/or at least one DVD can have the configuration shown in Figure 11 B.HDD comprises one or more " small-sized HDD of the disc of diameter that have less than about 1.8.Power transmission control system 932 can be connected to memory 947, and described memory 947 for example is RAM, ROM, such as low delay nonvolatile memory and/or other suitable electronic data storage of flash memory.Vehicle 930 can also comprise power supply 933.
With reference now to Figure 11 E,, the present invention can realize in the cell phone 950 that can comprise cellular antenna 951.The present invention can realize wireless network interface modules 968, and/or can realize the present invention in wireless network interface modules 968.In some implementations, cell phone 950 comprises microphone 956, the audio output apparatus 958 such as loud speaker and/or audio frequency output socket, display 960 and/or the input equipment 962 such as keyboard, some optional equipment (pointing device), voice-activated (voiceactuation) equipment and/or other input equipments.Signal processing in the cell phone 950 and/or control circuit 952 and/or other circuit (not shown) can deal with data, encode and/or encrypt, calculate, formatted data and/or carry out other cellular telephone function.
With reference now to Figure 11 F,, the present invention can realize in set-top box 980.The present invention can realize Network Interface Module 996, and/or can realize the present invention in Network Interface Module 996.Set-top box 980 is from the source received signal such as broad band source, and output is suitable for the display 988 such as TV and/or monitor and/or the standard and/or the high definition audio/vision signal of other video and/or audio output equipments.Described source can be connected to set-top box 980 via Network Interface Module 996.The signal processing of set-top box 980 and/or control circuit 984 and/or other circuit (not shown) can deal with data, encode and/or encrypt, calculate, formatted data and/or carry out any other set-top box functionality.
Set-top box 980 can be communicated by letter with the Mass Data Storage Facility 990 with the non-volatile storage data.Mass Data Storage Facility 990 can comprise light and/or magnetic storage apparatus, for example hard disk drive HDD and/or DVD.At least one HDD can have the configuration shown in Figure 11 A and/or at least one DVD can have the configuration shown in Figure 11 B.HDD comprises one or more " small-sized HDD of the disc of diameter that have less than about 1.8.Set-top box 980 can be connected to memory 994, and described memory 994 for example is RAM, ROM, such as low delay nonvolatile memory and/or other suitable electronic data storage of flash memory.Set-top box 980 can also comprise power supply 983.
With reference now to Figure 11 G,, the present invention can realize in media player 1000.The present invention can realize radio network interface 1016, and/or can realize the present invention in radio network interface 1016.In some implementations, media player 1000 comprises display 1007 and/or such as the user input device 1008 of keyboard, touch dish (touchpad) etc.In some implementations, media player 1000 can use graphic user interface (GUI), and graphic user interface generally uses menu, drop-down menu, icon and/or clicks the interface by display 1007 and/or user input device 1008.Media player 1000 also comprises the audio output apparatus 1009 such as loud speaker and/or audio frequency output socket.The signal processing of media player 1000 and/or control circuit 1004 and/or other circuit (not shown) can deal with data, encode and/or encrypt, calculate, formatted data and/or carry out any other media player function.
Though show amplifier 162, can use any analog output circuit that needs bias voltage and/or electric current.The present invention optionally increases supply voltage as required by usually reducing needed supply voltage and saves power.Therefore, improved the dynamic range of circuit, and increased power consumption indistinctively.
Those skilled in the art can know from foregoing description now can realize extensive instruction of the present invention in a variety of forms.Therefore, though the present invention is described together with its particular instance, but true scope of the present invention should be so unlimited, because after studying accompanying drawing, specification and claims, it is clear that other modification just becomes to those skilled in the art.
The application requires the U.S. Provisional Application No.60/773 in submission on February 14th, 2006, the U.S. Provisional Application No.60/763 that on January 27th, 033 and 2006 submitted to, 041 priority.Above-mentioned application is disclosed all to be incorporated in this by reference.
Claims (20)
1. circuit comprises:
Postponement module, transmitting after being used to receive digitally transmitted signals and producing delay;
First digital to analog converter is used for transmitting after the described delay is converted to analog transmit signal;
Analog output circuit is used to receive described analog transmit signal;
The envelope generation module is used for based on the amplitude information relevant with described digitally transmitted signals, produces envelope signal; And
The power supply adjusting module, be used for described envelope signal less than threshold value time supply reference voltage, the described bias voltage of described analog output circuit is boosted to more than the described reference voltage during at described envelope signal greater than described threshold value.
2. circuit as claimed in claim 1 also comprises second digital to analog converter that described envelope signal is converted to analogue envelope signal, and wherein said first digital to analog converter has higher resolution than the described second number transducer.
3. circuit as claimed in claim 2 also comprises the 3rd digital to analog converter, and described the 3rd digital to analog converter receives described envelope signal and produces the 3rd signal, and is that described analog output circuit increases bias current based on described the 3rd signal-selectivity ground.
4. circuit as claimed in claim 3, wherein said bias current increases when described envelope signal surpasses described threshold value.
5. wired network interface that comprises the described circuit of claim 1.
6. radio network interface that comprises the described circuit of claim 1.
7. radio network interface as claimed in claim 6, wherein said radio network interface are deferred at least one among ieee standard 802.11,802.11a, 802.11b, 802.11g, 802.11h, the 802.11n, 802.16 and 802.20.
8. circuit as claimed in claim 1, wherein said envelope generation module receive described digitally transmitted signals and produce described envelope signal based on described digitally transmitted signals.
9. circuit as claimed in claim 1, the rise time of wherein said envelope signal is slower than the fast attack time of described analog transmit signal.
10. circuit as claimed in claim 1, wherein said threshold value is substantially equal to the level of the reference voltage of described circuit.
11. a circuit comprises:
Postponement module, transmitting after being used to receive digitally transmitted signals and producing delay;
First digital to analog converter is used for transmitting after the described delay is converted to analog transmit signal;
Analog output circuit is used to receive described analog transmit signal;
The power supply boost module, be used for the signal of the amplitude information that comprises described digitally transmitted signals is sampled, and receive at described analog output circuit before the appropriate section of described analog transmit signal, the reference voltage that optionally will be fed to described analog output circuit based on the difference between described sampled signal and the threshold value boosts.
12. circuit as claimed in claim 11, wherein said power supply boost module comprises:
The envelope generation module produces envelope signal;
Second digital to analog converter is converted to analogue envelope signal with described envelope signal; And
The power supply adjusting module, described envelope signal less than described threshold value time supply reference voltage, the described bias voltage with described analog output circuit when described envelope signal surpasses described threshold value boosts to more than the described reference voltage.
13. circuit as claimed in claim 12, wherein said first digital to analog converter has higher resolution than described second digital to analog converter.
14. circuit as claimed in claim 12 also comprises the 3rd digital to analog converter, described the 3rd digital to analog converter receives described envelope signal and is described analog output circuit generation bias current.
15. circuit as claimed in claim 14, wherein said bias current increases when described envelope signal surpasses described threshold value.
16. wired network interface that comprises the described circuit of claim 12.
17. radio network interface that comprises the described circuit of claim 12.
18. radio network interface as claimed in claim 17, wherein said radio network interface are deferred among ieee standard 802.11,802.11a, 802.11b, 802.11g, 802.11h, the 802.11n, 802.16 and 802.20 at least one.
19. circuit as claimed in claim 12, wherein said envelope generation module receive described digitally transmitted signals and produce described envelope signal based on described digitally transmitted signals.
20. circuit as claimed in claim 12, the rise time of wherein said envelope signal is slower than the fast attack time of described analog transmit signal.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US76304106P | 2006-01-27 | 2006-01-27 | |
| US60/763,041 | 2006-01-27 | ||
| US77303306P | 2006-02-14 | 2006-02-14 | |
| US60/773,033 | 2006-02-14 | ||
| US11/368,308 | 2006-03-03 | ||
| US11/368,308 US7835710B2 (en) | 2006-01-27 | 2006-03-03 | Variable power adaptive transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101009714A true CN101009714A (en) | 2007-08-01 |
| CN101009714B CN101009714B (en) | 2012-08-08 |
Family
ID=38697834
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710002905 Active CN101056289B (en) | 2006-01-27 | 2007-01-26 | A variable power adaptive transmitter |
| CN2007100029067A Active CN101009714B (en) | 2006-01-27 | 2007-01-26 | Variable power adaptive transmitter |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200710002905 Active CN101056289B (en) | 2006-01-27 | 2007-01-26 | A variable power adaptive transmitter |
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| CN103916727A (en) * | 2012-12-31 | 2014-07-09 | 广州励丰文化科技股份有限公司 | Active integrated sound box with multiple digital signal processors (DSPs) |
| CN104124929A (en) * | 2013-04-23 | 2014-10-29 | 天工方案公司 | Apparatus and methods for envelope shaping in power amplifier systems |
| CN105075111A (en) * | 2013-03-20 | 2015-11-18 | 意法爱立信有限公司 | Amplifier topology for envelope tracking |
| CN101809862B (en) * | 2007-08-03 | 2015-11-25 | 思睿逻辑国际半导体有限公司 | Amplifier circuit |
| CN111512542A (en) * | 2017-12-15 | 2020-08-07 | 苹果公司 | Method and apparatus for digital envelope tracking with dynamically varying voltage levels for power amplifiers |
| CN111614329A (en) * | 2020-05-11 | 2020-09-01 | 维沃移动通信有限公司 | Power amplifier, electronic equipment, voltage control method and device |
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| CN111082815B (en) * | 2018-10-18 | 2022-04-26 | 力同科技股份有限公司 | Power amplifier circuit, design method and communication terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3240998B2 (en) * | 1998-07-27 | 2001-12-25 | 日本電気株式会社 | Transmission power control circuit |
| US6982593B2 (en) * | 2003-10-23 | 2006-01-03 | Northrop Grumman Corporation | Switching amplifier architecture |
| US6975166B2 (en) * | 2001-12-24 | 2005-12-13 | Koninklijke Philips Electronics N.V. | Power amplifier |
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- 2007-01-26 CN CN 200710002905 patent/CN101056289B/en active Active
- 2007-01-26 CN CN2007100029067A patent/CN101009714B/en active Active
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| CN101809862B (en) * | 2007-08-03 | 2015-11-25 | 思睿逻辑国际半导体有限公司 | Amplifier circuit |
| CN103916727A (en) * | 2012-12-31 | 2014-07-09 | 广州励丰文化科技股份有限公司 | Active integrated sound box with multiple digital signal processors (DSPs) |
| CN105075111A (en) * | 2013-03-20 | 2015-11-18 | 意法爱立信有限公司 | Amplifier topology for envelope tracking |
| CN104124929A (en) * | 2013-04-23 | 2014-10-29 | 天工方案公司 | Apparatus and methods for envelope shaping in power amplifier systems |
| US9866176B2 (en) | 2013-04-23 | 2018-01-09 | Skyworks Solutions, Inc. | Apparatus and methods for envelope shaping in mobile devices |
| CN104124929B (en) * | 2013-04-23 | 2018-08-03 | 天工方案公司 | Device and method for the envelope shaping in power amplifier system |
| CN111512542A (en) * | 2017-12-15 | 2020-08-07 | 苹果公司 | Method and apparatus for digital envelope tracking with dynamically varying voltage levels for power amplifiers |
| CN111512542B (en) * | 2017-12-15 | 2023-08-22 | 苹果公司 | Method and apparatus for digital envelope tracking with dynamically varying voltage levels |
| CN111614329A (en) * | 2020-05-11 | 2020-09-01 | 维沃移动通信有限公司 | Power amplifier, electronic equipment, voltage control method and device |
| CN111614329B (en) * | 2020-05-11 | 2024-04-19 | 维沃移动通信有限公司 | Power amplifier, electronic equipment, voltage control method and device |
| CN112953404A (en) * | 2021-01-27 | 2021-06-11 | 广州市迪声音响有限公司 | Power amplifier device with optical fiber signal conversion circuit and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101056289A (en) | 2007-10-17 |
| CN101009714B (en) | 2012-08-08 |
| CN101056289B (en) | 2013-02-13 |
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