CN101207420A - Method and system for processing signal - Google Patents
Method and system for processing signal Download PDFInfo
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- CN101207420A CN101207420A CNA2007101968645A CN200710196864A CN101207420A CN 101207420 A CN101207420 A CN 101207420A CN A2007101968645 A CNA2007101968645 A CN A2007101968645A CN 200710196864 A CN200710196864 A CN 200710196864A CN 101207420 A CN101207420 A CN 101207420A
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Abstract
Methods and systems for reducing AM/PM distortion in a polar amplifier are disclosed and may comprise adding an offset signal to an amplitude signal in the digital domain and removing the offset signal in the analog domain during polar modulation. A sum of an amplitude signal and an offset signal may be mixed with a phase signal in a first differential amplifier to generate a first voltage signal, and the offset signal may be mixed with the phase signal in a second differential amplifier to generate a second voltage signal, which may be subtracted from the first voltage signal. The amplitude and offset signals may be mixed with the phase signal by modulating a current in the differential amplifiers, which may comprise cascode differential amplifiers. The modulated current may be generated using a current source and a current mirror circuit, which may comprise a cascode current mirror.
Description
Technical field
The present invention relates to wireless system, more particularly, relate to a kind of shared high power transmission route method of multi-protocols transceiver and system of being used for.
Background technology
Along with mobile, wireless and/or hand-held portable devices develop into the communication equipment of multifunction, " All-in-One " gradually, these hand-held portable devices are integrated with the wide variety of functions that increases gradually, to handle various wireless communication services.For example, single hand-held portable devices can realize Bluetooth communication and wireless LAN communication.
Most of front-end processing in the radio communication service is all carried out in analog circuit.Front-end processing in the portable equipment comprises a lot of operations, comprises the reception of radio frequency (RF) signal, generally receives by communicating to connect to the antenna of this portable equipment.The task that receiver is carried out radiofrequency signal has for example demodulation, filtering and analog-to-digital conversion (ADC).The signal that generates is baseband signal.Baseband signal generally includes numerical data, and this numerical data is handled in the digital circuit of portable equipment subsequently.
Front-end processing in the portable equipment also comprises the transmission of radiofrequency signal.The task that reflector is carried out baseband signal has for example digital-to-analogue conversion (DAC), filtering, modulation and power amplification (PA).Radiofrequency signal after power amplification sends by communicating to connect to the antenna of this portable equipment usually.The antenna that portable equipment is used for received RF signal can be the same antenna with the antenna that is used for emitting radio frequency signal, also can be different antennas.
A restriction that increases the integrated level of radio communication service in the single portable equipment is, the analog circuit that is used for each radio communication service be implemented in independent integrated circuit (IC) equipment (or) chip.This can bring a large amount of defectives and/or restriction to this portable equipment.For example, the number of chips that increases has gradually limited the microminiaturized degree of portable equipment physical size.Therefore, the increase of integrated level causes the equipment physical size very big, and this will reduce user's preference.Because need to repeat the auxiliary circuit relevant with each radio frequency chip, number of chips further increases.For example, each radio frequency chip needs independent low noise amplifier circuit, independent power amplifier circuit and independent crystal oscillator (XO) circuit, and this crystal oscillator is used to generate clock signal and the timing signal in each radio frequency chip.For the baseband signal that is used to handle from each independent radio communication service, same similarly circuit also can take place digital IC device repeats.
Along with the increase of IC number of devices, the power consumption in the portable equipment also can increase accordingly.This draws another group defective again, has for example increased operating temperature, has shortened the service time of battery between recharging.
Each feature that compares the follow-up system that will introduce in conjunction with the accompanying drawings of the present invention, other limitation and drawback existing and conventional art are conspicuous for the person of ordinary skill of the art.
Summary of the invention
The application shows below in conjunction with at least one width of cloth accompanying drawing and/or has described and a kind ofly be used for shared high power transmission route method of multi-protocols transceiver and system, and provide more complete defining in claims.
According to an aspect of the present invention, the invention provides a kind of method of processing signals, described method comprises: by first wireless signal of following the modulation of first wireless protocols and shared first amplifier of second wireless signal of following the modulation of second wireless protocols.
As preferably, described first wireless protocols is an IEEE 802.11x agreement.
As preferably, described second wireless protocols is a Bluetooth protocol.
As preferably, described method further comprises: amplify one or both in described first wireless signal and described second wireless signal by described first amplifier.
As preferably, described method further comprises: amplify described first wireless signal and described second wireless signal simultaneously by described first amplifier.
As preferably, described method further comprises: use second amplifier to amplify described second wireless signal.
As preferably, described first amplifier provides than the high gain of described second amplifier.
As preferably, described method further comprises: when described first amplifier is amplifying described second wireless signal, reduce the power of described second amplifier.
As preferably, described method further comprises: send described second wireless signal to described first amplifier by commutation circuit.
As preferably, described commutation circuit is the secondary commutation circuit.
According to another aspect of the present invention, the invention provides a kind of machine readable memory, the computer program of its stored comprises that at least one is used for the code segment of processing signals, and described code segment is carried out by machine and made this machine carry out following steps: by first wireless signal of following the modulation of first wireless protocols and shared first amplifier of second wireless signal of following the modulation of second wireless protocols.
As preferably, described first wireless protocols is an IEEE 802.11x agreement.
As preferably, described second wireless protocols is a Bluetooth protocol.
As preferably, described at least one code segment comprises the code that is used to realize amplifying by described first amplifier described first wireless signal and described second wireless signal.
As preferably, described at least one code segment comprises that realization amplifies the code of described first wireless signal and described second wireless signal simultaneously by described first amplifier.
As preferably, described at least one code segment comprises realizes using second amplifier to amplify the code of described second wireless signal.
As preferably, described first amplifier provides than the high gain of described second amplifier.
As preferably, described at least one code segment is included in the code that reduces the power of described second amplifier when described first amplifier is amplifying described second wireless signal.
As preferably, described at least one code segment comprises that realization sends described second wireless signal to by commutation circuit the code of described first amplifier.
As preferably, described commutation circuit is the secondary commutation circuit.
According to an aspect of the present invention, the invention provides a kind of system of processing signals, described system comprises: first amplifier, it can amplify first wireless signal of following the modulation of first wireless protocols and second wireless signal of following the modulation of second wireless protocols.
As preferably, described first wireless protocols is an IEEE 802.11x agreement.
As preferably, described second wireless protocols is a Bluetooth protocol.
As preferably, described first amplifier amplifies the one or both in described first wireless signal and described second wireless signal.
As preferably, described first amplifier amplifies described first wireless signal and described second wireless signal simultaneously.
As preferably, described system further comprises: second amplifier, it can amplify described second wireless signal.
As preferably, described first amplifier provides than the high gain of described second amplifier.
As preferably, described system further comprises: the one or more circuit that are used for reducing the power of described second amplifier when described first amplifier is amplifying described second wireless signal.
As preferably, described system further comprises: commutation circuit enables to send described second wireless signal to described first amplifier.
As preferably, described commutation circuit is the secondary commutation circuit.
According to another aspect of the present invention, the invention provides a kind of method of processing signals, described method comprises: in the transmitting chain of reflector, by a plurality of shared at least one power amplifier that transmit of following corresponding a plurality of wireless protocols.
As preferably, first wireless protocols in described a plurality of wireless protocols is an IEEE 802.11x agreement.
As preferably, second wireless protocols in described a plurality of wireless protocols is a Bluetooth protocol.
As preferably, described method further comprises: amplify one or more in described a plurality of the transmitting by described at least one power amplifier.
As preferably, described method further comprises: amplify two or more in described a plurality of the transmitting simultaneously by described at least one power amplifier.
As preferably, described method further comprises: control described at least one power amplifier in the described transmitting chain so that with optimum efficiency work.
As preferably, described method further comprises: control described at least one power amplifier in the described transmitting chain so that with maximum power efficiency work.
As preferably, described method further comprises: the bias current of controlling described at least one power amplifier in the described transmitting chain is so that with described optimum efficiency work.
As preferably, described method further comprises: the gain of controlling described at least one power amplifier in the described transmitting chain is so that with described optimum efficiency work.
As preferably, described method further comprises: the linearity of controlling described at least one power amplifier in the described transmitting chain is so that with described optimum efficiency work
According to another aspect of the present invention, the invention provides a kind of system of processing signals, described system comprises: at least one power amplifier in the transmitting chain of reflector, it is shared by a plurality of institutes that transmit that follow corresponding a plurality of wireless protocols.
As preferably, first wireless protocols in described a plurality of wireless protocols is an IEEE 802.11x agreement.
As preferably, second wireless protocols in described a plurality of wireless protocols is a Bluetooth protocol.
As preferably, described at least one power amplifier amplifies one or more in described a plurality of the transmitting.
As preferably, described at least one power amplifier amplifies two or more in described a plurality of the transmitting simultaneously.
As preferably, described at least one power amplifier in the described transmitting chain is controlled to optimum efficiency work.
As preferably, described at least one power amplifier in the described transmitting chain is controlled to maximum power efficiency work.
As preferably, the bias current of described at least one power amplifier in the described transmitting chain is controlled to described optimum efficiency work.
As preferably, the gain of described at least one power amplifier in the described transmitting chain is controlled to described optimum efficiency work.
As preferably, the linearity of described at least one power amplifier in the described transmitting chain is controlled to described optimum efficiency work.
Various advantage of the present invention, various aspects and character of innovation, and the details of the embodiment of example shown in it will describe in detail in following description and accompanying drawing.
Description of drawings
Fig. 1 is the schematic block diagram of wireless terminal according to an embodiment of the invention;
Fig. 2 A is the schematic block diagram of shared power amplifier in the multiaerial system according to an embodiment of the invention;
Fig. 2 B is the schematic block diagram of shared power amplifier in a single aerial system according to an embodiment of the invention;
Fig. 2 C is the schematic block diagram that merges according to an embodiment of the invention from the differential signal of two frequency mixers;
Fig. 3 is the schematic block diagram that is used for the radio frequency commutation circuit of shared power amplifier according to an embodiment of the invention;
Fig. 4 is the flow chart of the shared high power transmission route method of multi-protocols transceiver according to an embodiment of the invention;
Fig. 5 is the flow chart of the shared high power transmission route method of multi-protocols transceiver according to an embodiment of the invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
The present invention has introduced a kind of shared high power transmission route method of multi-protocols transceiver and system of being used for by some embodiment.Each embodiment of the present invention comprises by first wireless signal and shared first power amplifier of second wireless signal.Described first wireless signal is followed IEEE 802.11x agreement and is modulated, and described second wireless signal is followed Bluetooth protocol and modulated.Scalable first wireless signal of described first power amplifier and/or second wireless signal, wherein, described first power amplifier can amplify first wireless signal and second wireless signal simultaneously.
The present invention can use second power amplifier to amplify second wireless signal, and first power amplifier has the gain higher than second power amplifier.When using first power amplifier to amplify second wireless signal, the power of second power amplifier will be reduced.Second wireless signal can send first power amplifier to by commutation circuit.This commutation circuit comprises at least one or a plurality of stage of switches (current-mode stage of switches, voltage mode stage of switches or the like).
Fig. 1 is the schematic block diagram of portable terminal according to an embodiment of the invention.As shown in Figure 1, wireless terminal 120 comprises a plurality of radio frequency receiver 123a ..., 123an, a plurality of radiofrequency launcher 123b ..., 123bn, digital baseband processor 129, processor 125 and memory 127.Among each embodiment of the present invention, radio frequency receiver 123a ..., 123an and radiofrequency launcher 123b ..., 123bn can be integrated in the radio-frequency (RF) transceiver 122.The single antenna 121a that transmits and receives communicates to connect to emission/reception switch 121b, and the latter communicates to connect to multiplexer (MUX) or switch 140 again.MUX or switch 140 communicate to connect to each radio frequency receiver 123a ..., 123an and radiofrequency launcher 123b ..., 123bn.Emission/reception switch 121b or have other device of handoff functionality can be connected radio frequency receiver 123a ..., 123an and radiofrequency launcher 123b ..., between the 123bn, and switchable antenna is used for emission or receiving function.Wireless terminal 120 may operate in the system, for example WLAN, Cellular Networks, digital video broadcast network and/or Wireless Personal Network (WPAN) blueteeth network for example.Thus, wireless terminal 120 can be supported the various wireless communication agreement, comprises the IEEE 802.11g/n standard criterion at wlan network.
One or more radio frequency receiver 123a ..., 123an can include suitable logic, circuit and/or code, the processing of the radiofrequency signal that is used to receive.One or more radio frequency receiver 123a ..., 123an can receive the radiofrequency signal of following first agreement in one or more frequency bands according to the wireless communication protocol that wireless terminal 120 is supported.For example, radio frequency receiver 123an can receive according to the wireless communication protocol that wireless terminal 120 is supported and follow second or the radiofrequency signal of n agreement in one or more frequency bands.For example, radio frequency receiver 123a ..., each frequency band that the arbitrary portion of 123an is supported has corresponding front-end circuit to be used to carry out low noise amplification and down converted operation.Thus, when it supported more than one frequency band, radio frequency receiver 123a or radio frequency receiver 123an referred to multifrequency receiver (MFR) again.In one embodiment of the present of invention, radio frequency receiver 123a handles first wireless protocols ..., radio frequency receiver 123an handles the n wireless protocols, and wherein n is more than or equal to 2.
In an alternative embodiment of the invention, one or more radio frequency receiver 123a ..., 123an can be single band or multifrequency receiver (MFR).Radio frequency receiver 123a ..., 123an can realize on chip.In one embodiment of the present of invention, radio frequency receiver 123a ..., one or more being integrated on the chip that comprises radio-frequency (RF) transceiver 122 among the 123an.In an alternative embodiment of the invention, radio frequency receiver 123a ..., one or more can being integrated on the chip with upper-part among the 123an with in the wireless terminal 120.
In one embodiment of the present of invention, radio frequency receiver 123a can become to comprise the fundamental frequency signal of homophase (I) component and quadrature (Q) component with the radiofrequency signal quadrature down converted that receives.It should be understood that the present invention can also use the receiver of other type and do not depart from the scope of the present invention.Radio frequency receiver 123a can carry out direct down converted to the radiofrequency signal that receives, and converts thereof into fundamental frequency signal.Under some situation, radio frequency receiver 123a can carry out analog-to-digital conversion to it before sending baseband signal component to digital baseband processor 129.Under the other situation, radio frequency receiver 123a can transmit this baseband signal component with analog in form.Other receiver equally also is like this.
Digital baseband processor 129 includes suitable logic, circuit and/or code, realizes the processing and/or the reply of fundamental frequency signal.Thus, digital baseband processor 129 can be handled from one or more radio frequency receiver 123a, the signal that 123an receives and/or at one or more radiofrequency launcher 123b, when can be used for carrying out Network Transmission, 123bn will send to one or more radiofrequency launcher 123b ..., the signal of 123bn.Digital baseband processor 129 also can provide control and/or feed back to one or more radio frequency receiver 123a based on the information from treated signal ..., 123an and give one or more radiofrequency launcher 123b ..., 123bn.Digital baseband processor 129 will send processor 125 and/or memory 127 to from the information and/or the data of treated signal.In addition, digital baseband processor 129 can be from processor 125 and/or memory 127 reception information, and this information is transmitted to radiofrequency launcher 123b after treatment ..., 123bn is so that send network to.In one embodiment of the present of invention, digital baseband processor 129 can be integrated on the chip with upper-part with in the wireless terminal 120.
One or more radiofrequency launcher 123b ..., 123bn includes suitable logic, circuit and/or code, is used to handle radiofrequency signal so that emission.One or more radiofrequency launcher 123b ..., 123bn can be in a plurality of frequency bands emitting radio frequency signal.For example, one or more radiofrequency launcher 123b ..., each frequency band that 123bn supported has corresponding front-end processing circuit to be used for the operation of amplification and up-conversion.Thus, when supporting an above frequency band, one or more radiofrequency launcher 123b ..., 123bn refers to the multiband reflector again.In an alternative embodiment of the invention, one or more radiofrequency launcher 123b ..., 123bn can be single band or multiband reflector.One or more radiofrequency launcher 123b ..., 123bn can realize on chip.In one embodiment of the present of invention, one or more radiofrequency launcher 123b ..., 123bn can be integrated on the chip that comprises radio-frequency (RF) transceiver 122.In an alternative embodiment of the invention, one or more radiofrequency launcher 123b ..., 123bn can be integrated on the chip with the more than one parts in the wireless terminal 120.In one embodiment of the present of invention, radiofrequency launcher 123b can handle first wireless protocols ..., radiofrequency launcher 123bn can handle the n wireless protocols, and wherein n is more than or equal to 2.
In one embodiment of the present of invention, radiofrequency launcher 123b can convert the fundamental frequency signal quadrature up-convert that comprises the I/Q component to radiofrequency signal.Radiofrequency launcher 123b can carry out direct up-conversion to fundamental frequency signal, converts thereof into radiofrequency signal.Under some situation, radiofrequency launcher 123b can carry out digital-to-analogue conversion to the baseband signal component that receives from digital baseband processor 129 before carrying out up-conversion.Under other situations, radiofrequency launcher 123b is with analog form receiving baseband signal component.However, the present invention is not limited to the transmitter configuration of the above-mentioned type.Therefore, the present invention can also use other type reflector for example the utmost point to reflector.
Processor 125 includes suitable logic, circuit and/or code, is used for the control and/or the data processing operation of wireless terminal 120.Processor 125 can be used for controlling one or more radio frequency receiver 123a ..., 123an, one or more radiofrequency launcher 123b ..., at least a portion in 123bn, digital baseband processor 129 and/or the memory 127.Thus, processor 125 can generate at least one signal and is used to control operation in the wireless terminal 120.Processor 125 also can be carried out wireless terminal 120 employed application programs.For example, processor 125 can generate at least one control signal, and/or executable application programs is communicated by letter to realize the current WLAN with suggestion in the wireless terminal 120.
Memory 127 includes suitable logic, circuit and/or code, is used to store wireless terminal 120 employed data and/or out of Memory.For example, memory 127 can be used for storing the treated data of digital baseband processor 129 and/or processor 125 generations.Memory 127 also can be used for stored information, for example is used to control the configuration information of the operation of at least one module in the wireless terminal 120.For example, memory 127 can comprise the required information of WLAN signal in the suitable frequency band of configuration radio frequency receiver 123a reception.
Fig. 2 A is the schematic block diagram of shared power amplifier in the multiaerial system according to an embodiment of the invention.Be illustrated in figure 2 as and follow for example transmission path of the signal of WiFi WLAN and bluetooth of two kinds of wireless protocols.Although can use various agreement among each embodiment of the present invention, use WLAN and Bluetooth protocol to make an explanation as example at this.Transmission path includes processing module 210 and 220, amplifier 216 and 226, antenna 218 and 228 and radio frequency commutation circuit 230.
Radio frequency commutation circuit 230 includes suitable logic and/or circuit, realizes bluetooth differential signal BT
+And BT
-Send amplifier 216 to.Therefore, amplifier 216 scalable WLAN differential signal WLAN
+And WLAN
-, bluetooth differential signal BT
+And BT
-, or WLAN differential signal WLAN
+And WLAN
-With bluetooth differential signal BT
+And BT
-Both.Radio frequency commutation circuit 230 can comprise one or more stage of switches.This commutation circuit will provide more detailed introduction in conjunction with Fig. 3.
Under some situation, whether send any or both in the above wireless protocols by amplifier 216 according to current, the characteristic of PGA 216a, PAD 216b and/or PA 216c can regulate or control to optimize the operation of amplifier 216.Thus, this characteristic refers to for example bias current value, the linearity and/or gain.In addition, optimization refers to and for example realizes maximum effect.
In the work, amplifier 216 scalable WLAN signals, the Bluetooth signal that amplifier 226 amplifies from processing module 220 from processing module 210.The overall gain of amplifier 216 is greater than the overall gain of amplifier 226, because the ratio of gains Bluetooth signal that the WLAN signal needs when transmitting wants big.But sometimes, Bluetooth signal transmits with the 1st quasi-mode, and the signal strength signal intensity level of its emission is higher.Because amplifier 226 can not send the signal of the 1st class rank (for example 20dBm), Bluetooth signal will send amplifier 216 to.
In one embodiment of the present of invention, when radio frequency commutation circuit 230 disconnected, Bluetooth signal separated with amplifier 216.But, can be with radio frequency commutation circuit 230 closures, so that Bluetooth signal is sent to amplifier 216 from processor 220.An example of radio frequency commutation circuit will be described in conjunction with Fig. 3.When Bluetooth signal will be amplified by amplifier 216, just do not need amplifier 226, therefore, the power that offers amplifier 226 can be reduced.In the one embodiment of the invention, offer the voltage of amplifier 216 and/or amplifier 226 or electric current can reduce or cut off fully when amplifier is not used.
When the Bluetooth signal that is transmitting had the frequency range of the bandwidth range that is positioned at amplifier 216 and this Bluetooth signal frequency and do not overlap with the WLAN signal frequency, amplifier 216 can amplify Bluetooth signal and WLAN signal simultaneously.In addition, each embodiment of the present invention also can reduce the quantity of power that offers one or both in processing module 210 and/or the processor 220 when processing module is not used.For example, if do not send the WLAN signal, then can reduce the power of processing module 210.In the another embodiment of the present invention, when supporting two or more agreements, every kind of agreement can be used corresponding and processing module 210 and 220 similar processing modules.Thus, every kind of agreement of being supported does not need to have for example amplifier 226 of its oneself radio frequency part, on the contrary, can simultaneously or use high power path to be used for shared transmission path operation separately.
Fig. 2 B is the schematic block diagram of shared power amplifier in a single aerial system according to an embodiment of the invention.Be depicted as the transmission path of the signal that is used for two kinds of agreements (for example WiFi WLAN and bluetooth) as Fig. 2 B.Although each embodiment of the present invention can use various agreement, below be described as example with WLAN and Bluetooth protocol.This transmission path comprises processing module 210 and 220, amplifier 217, antenna 218 and radio frequency switch 231.
The difference of transmission path shown in Fig. 2 B and the disclosed transmission path of Fig. 2 A is, uses individual antenna to launch among Fig. 2 B.Thus, disclosed transmission path does not need antenna 228, amplifier 226 among Fig. 2 B, does not need radio frequency commutation circuit 230 yet, and can use amplifier 217 to replace amplifier 216.
Amplifier 217 comprises for example programmable gain amplifier (PGA) 217a, power amplifier driver (PAD) 217b and power amplifier (PA) 217c.PGA 217a provides gain to differential input signal WLAN
+And WLAN
-Or to bluetooth differential signal BT
+And BT
-The gain of PGA 217a can for example radio-frequency (RF) transceiver 122, processor 125 and/or baseband processor 129 be controlled by circuit and/or processor.PAD 217b provides further gain, and PA 217c provides more gain so that launch by antenna 218.The difference output of PA 217c can convert single output to so that emission by balanced-to-unblanced transformer.PGA 217a, PAD 217b and/or PA 217c can by from circuit and/or processor for example a plurality of control signals of radio-frequency (RF) transceiver 122, processor 125 and/or baseband processor 129 control.In one embodiment of the present of invention, for provide to Bluetooth signal with Fig. 2 A amplifier 226 in the similar operation that provided of PA 226a, can utilize control signal to dispose PGA 217a and PAD 217b so that unit gain to be provided, and overall gain is provided by PA 217c.
Radio frequency switch 231 comprises suitable logic and/or circuit, and can realize will be from the bluetooth differential signal BT that handles module 220
+And BT
-And/or from the WLAN differential signal WLAN of processing module 210
+And WLAN
-Send amplifier 217 to.Therefore, amplifier 217 scalable WLAN differential signal WLAN
+And WLAN
-, bluetooth differential signal BT
+And BT
-, or WLAN differential signal WLAN
+And WLAN
-With bluetooth differential signal BT
+And BT
-Both.Radio frequency switch 213 can comprise one or more stage of switches.
In the work, amplifier 217 scalable from processing module 210 the WLAN signal and from the Bluetooth signal of processing module 220.The overall gain of amplifier 217 can be controlled, because the gain higher than bluetooth signal of when emission WLAN signal demand.But sometimes, Bluetooth signal can be launched by the 1st quasi-mode, and this moment, the signal strength signal intensity level of emission can be higher.
When the Bluetooth signal that is transmitting had the frequency range of the bandwidth range that is positioned at amplifier 217 and this Bluetooth signal frequency and do not overlap with the WLAN signal frequency, amplifier 217 can amplify Bluetooth signal and WLAN signal simultaneously.In addition, each embodiment of the present invention also can reduce the quantity of power that offers one or both in processing module 210 and/or the processor 220 when processing module is not used.For example, if do not send the WLAN signal, then can reduce the power of processing module 210.
Fig. 2 C is the schematic block diagram that merges according to an embodiment of the invention from the differential signal of two frequency mixers.Be depicted as frequency mixer 224a and 224b, inductor 250 and 254 and capacitor 252 and 256 as Fig. 2 C.The exportable first differential signal I_BT of frequency mixer 224a
+With the second differential signal I_BT
-, differential signal I_BT wherein
+And I_BT
-Represent the I channel.The exportable first differential signal Q_BT of frequency mixer 224b
+With the second differential signal Q_BT
-, differential signal Q_BT wherein
+And Q_BT
-Represent the Q channel.
Fig. 3 is the schematic block diagram that is used for the radio frequency commutation circuit of shared power amplifier (amplifier) according to an embodiment of the invention.Transistor 302,304,306 and 308, main spurious impedance 300 and the load impedance 350 relevant with trace route (trace routing) are arranged as shown in Figure 3.Spurious impedance 300 by resistor 310 and 320, inductor 312,314,322 and 324 and capacitor 316 and 326 simulate.Spurious impedance 300 is to produce from transistor 302 and 304 paths to transistor 306 and 308.Therefore, load impedance 350 can increase along with the increase in path.Load impedance 350 can be the load impedance of frequency mixer 214a and 214b, and is similar in conjunction with the inductor among Fig. 2 C 250 and 254, capacitor 252 and 256 described load impedances.
Enable signal EN can send the grid of transistor 302,304,306 and 308 to.Transistor 302 and 304 comprises first switch in the radio frequency commutation circuit for example 230, and transistor 306 and 308 comprises second switch in the radio frequency commutation circuit 230.Under the situation of first processing module away from second processing module, two stage of switches can be used for radio frequency commutation circuit 230.Otherwise, in radio frequency commutation circuit 230, only use a stage of switches.The quantity of the stage of switches of using in the commutation circuit 230 depends on design.Therefore, commutation circuit 230 can comprise one or more commutation circuits.
In the work, if commutation circuit 230 will disconnect, enable signal EN will be removed to assert (deasserted), the electric current of transistor 302,304,306 and 308 thereby cut-out is flowed through.Therefore, amplify by amplifier 226, amplify by amplifier 216 from the WLAN signal of processing module 210 from the Bluetooth signal of processing module 220.If prepare to amplify Bluetooth signal from processing module 220 by amplifier 216, then enable signal EN is asserted (asserted).Enable signal EN can for example radio-frequency (RF) transceiver 122, processor 125 and/or digital baseband processor 129 be controlled by circuit and/or processor.
Because the impedance ratio frequency mixer 224a of the source electrode of transistor 302 and 304 and the load impedance (having provided description in conjunction with Fig. 2 C) of 224b are much smaller, most of output current of frequency mixer 224a and 224b will be guided transistor 302 and 304, rather than load impedance.Spurious impedance 300 can be served as low pass filter, makes a part of high frequency be shunted ground connection by capacitor 316 and 326.Along with the increase of source impedance and reducing of load impedance, the 3dB point of this low pass filter may be higher frequency.
The source impedance of the low pass filter that spurious impedance 300 forms can be the drain impedance of transistor 302 and 304, and this impedance is very high.The load impedance of the low pass filter that spurious impedance 300 forms can be the source impedance of transistor 306 and 308, and this impedance is very low.Therefore, the low pass filter of spurious impedance 300 formation can not decayed from the too many Bluetooth signal of processing module 220.This Bluetooth signal produces voltage then on the load impedance 350 of frequency mixer 214a and 214b.The final voltage that produces can send the differential input end of amplifier 216 on the load impedance 350.
If the WLAN signal also will amplify by amplifier 216, then the WLAN signal from frequency mixer 214a and 214b will merge with the Bluetooth signal from frequency mixer 224a and 224b, to produce voltage on load impedance 350.Therefore, among each embodiment of the present invention, amplifier 216 scalable Bluetooth signals or WLAN signal or amplify two kinds of signals are simultaneously launched by antenna 218 then.
Each embodiment of the present invention can be single-ended, difference or the single-ended realization that combines with difference.For example, Fig. 2 A and Fig. 2 B are depicted as the embodiment of single-ended realization, Fig. 2 C and the embodiment that Figure 3 shows that difference realizes.
Fig. 4 is the flow chart of the shared high power transmission route method of multi-protocols transceiver according to an embodiment of the invention.As shown in Figure 4 in steps 400 to 412.In the step 400, wireless terminal 120 can begin once to launch processing.This emission can be Bluetooth signal or WLAN signal.The various piece of radiating circuit is current can be deactivated, or is in the reduction power rating, comprises being in off-position, does not have this moment signal to transmit in the wireless terminal 120.Therefore, processing digital signal is so that the each several part of the digital baseband processor 129 of emission may be in dead status.Processing module 210 and 220 and amplifier 216 and 226 also may be in dead status.In addition, commutation circuit 230 may be in off-state.
In the step 402, whether what judge emission is Bluetooth signal.This can be determined by for example processor 125.Do not transmitting under the situation of Bluetooth signal, next step is with execution in step 404.Otherwise, next step execution in step 412.In the step 404, judge whether that the WLAN signal is transmitted.If, next step execution in step 406.Otherwise, next step execution in step 400.In the step 406, activate processing module 210, or processing module 210 is powered on fully, be used for the transmission of WLAN signal.In the step 408, activate amplifier 216 and be used for transmitting.In the step 410, carry out the transmission of WLAN signal.WLAN signal and/or Bluetooth signal transmit finish after, the appropriate circuitry that no longer needs will be deactivated so that power saving.
In the step 402, if transmitting then execution in step 412 of Bluetooth signal.In the step 412, activate the transmission that processing module 220 is used for Bluetooth signal.In the step 414, processor 125 need to judge whether the high power bluetooth to transmit.Under the situation that will carry out the transmission of high power bluetooth, next step execution in step 418.Under the situation of not carrying out the transmission of high power bluetooth, next step execution in step 416.In the step 416, activate amplifier 226.Execution in step 410 then, by antenna 228 emission blue-teeth datas.
In the step 414, transmit next step execution in step 418 if will carry out the high power bluetooth.In the step 418, enable signal EN is asserted to commutation circuit 230.Therefore, the Bluetooth signal from frequency mixer 224a and 224b can be amplified by amplifier 216.Owing to do not need amplifier 226 when the high power bluetooth transmits, amplifier 226 remains on the reduction power rating.In the step 420, processor 125 judges whether also transmitting the WLAN signal.If the WLAN signal has been ready to transmit, and the bandwidth of Bluetooth signal is not overlapping with the bandwidth of WLAN signal, then can transmit simultaneously.If can transmit next step execution in step 406 simultaneously.Otherwise, next step execution in step 408.
This system also comprises amplifier 216, and it can be by from the WLAN signal of handling module 210 and shared from the Bluetooth signal institute of processing module 220.Amplifier 216 scalable WLAN signal and/or Bluetooth signals, and amplifier 216 can amplify WLAN signal and Bluetooth signal simultaneously.Bluetooth signal also can be amplified by amplifier 226, and wherein amplifier 216 provides the gain higher than amplifier 226.Amplifying at amplifier 216 under the situation of Bluetooth signal, but the power of step-down amplifier 226.This power can for example digital baseband processor 129 and/or processor 125 be controlled by circuit and/or processor.Bluetooth signal can send amplifier 216 to by radio frequency commutation circuit 230, and wherein, in the one embodiment of the invention, radio frequency commutation circuit 230 can be the two-stage commutation circuit.However, the radio frequency commutation circuit can comprise one or more stage of switches.
Fig. 5 is the flow chart of the shared high power transmission route method of multi-protocols transceiver according to an embodiment of the invention.As shown in Figure 5 in steps 500 to 512.In the step 500, wireless terminal 120 can begin once to launch processing.This emission can be agreement 1 (P1) signal or agreement 2 (P2) signal.The various piece of radiating circuit is current can be deactivated, or is in the reduction power rating, comprises being in off-position, does not have this moment signal to transmit in the wireless terminal 120.Therefore, processing digital signal is so that the each several part of the digital baseband processor 129 of emission may be in dead status.Processing module 210 and 220 and amplifier 216 and 226 also may be in dead status.In addition, commutation circuit 230 may be in off-state.
In the step 502, whether what judge emission is the P1 signal.This can be determined by for example processor 125.Do not transmitting under the situation of P1 signal, next step is with execution in step 504.Otherwise, next step execution in step 512.In the step 504, judge whether that the P2 signal is transmitted.If, next step execution in step 506.Otherwise, next step execution in step 500.In the step 506, activate processing module 210, or processing module 210 is powered on fully, be used for the transmission of P2 signal.In the step 508, activate amplifier 216 and be used for transmitting.In the step 510, carry out the transmission of P2 signal.P2 signal and/or P1 signal transmit finish after, the appropriate circuitry that no longer needs will be deactivated so that power saving.
In the step 502, if transmitting then execution in step 512 of P1 signal.In the step 512, activate the transmission that processing module 220 is used for the P1 signal.In the step 514, processor 125 need to judge whether high power P1 to transmit.Under the situation that will carry out high power P1 transmission, next step execution in step 518.Under the situation of not carrying out high power P1 transmission, next step execution in step 516.In the step 516, activate amplifier 226.Execution in step 510 then, by antenna 228 emission P1 data.
In the step 514, transmit next step execution in step 518 if will carry out high power P1.In the step 518, enable signal EN is asserted to commutation circuit 230.Therefore, the P1 signal from frequency mixer 224a and 224b can be amplified by amplifier 216.Owing to do not need amplifier 226 when high power P1 transmits, amplifier 226 remains on the reduction power rating.In the step 520, processor 125 judges whether also transmitting the P2 signal.If the P2 signal has been ready to transmit, and the bandwidth of P1 signal is not overlapping with the bandwidth of P2 signal, then can transmit simultaneously.If can transmit next step execution in step 506 simultaneously.Otherwise, next step execution in step 508.
An alternative embodiment of the invention is included in the transmitting chain of reflector by a plurality of shared at least one power amplifier that transmit of following corresponding a plurality of wireless protocols.First wireless protocols in described a plurality of wireless protocols is an IEEE 802.11x agreement.Second wireless protocols in described a plurality of wireless protocols is a Bluetooth protocol.One or more in described a plurality of the transmitting are amplified by described one or more power amplifiers.Two or more can the amplification simultaneously in described a plurality of the transmitting by described one or more power amplifiers.At least one power amplifier in the described transmitting chain can be controlled to optimum efficiency work, for example with maximum power efficiency work.The bias current of the one or more power amplifiers in the described transmitting chain, gain and/or the linearity can be controlled to so that optimum operation to be provided.
System of the present invention also comprises amplifier 216, by from the WLAN signal of handling module 210 and shared from the Bluetooth signal institute of processing module 220.Amplifier 216 scalable WLAN signal and/or Bluetooth signals, and amplifier 216 can amplify WLAN signal and Bluetooth signal simultaneously.Bluetooth signal also can be amplified by amplifier 226, and wherein amplifier 216 provides the gain higher than amplifier 226.Amplifying at amplifier 216 under the situation of Bluetooth signal, but the power of step-down amplifier 226.This power can for example digital baseband processor 129 and/or processor 125 be controlled by circuit and/or processor.Bluetooth signal can send amplifier 216 to by radio frequency commutation circuit 230, and wherein, in the one embodiment of the invention, radio frequency commutation circuit 230 can be the two-stage commutation circuit.However, the radio frequency commutation circuit can comprise one or more stage of switches.
An alternative embodiment of the invention provides a kind of machine readable memory, the computer program of its stored comprises that at least one is used for the code segment of processing signals, and described code segment is carried out by machine and made this machine carry out the shared high power transmission route method of multi-protocols transceiver that is used for described above.
Therefore, the present invention can pass through hardware, software, and perhaps soft, combination of hardware realizes.The present invention can realize with centralized system at least one computer system, perhaps be realized with dispersing mode by the different piece in the computer system that is distributed in several interconnection.Anyly can realize that the computer system of described method or miscellaneous equipment all are applicatory.The combination of software and hardware commonly used can be the general-purpose computing system that computer program is installed, and by installing and carry out described program-con-trolled computer system, it is moved by described method.In computer system, utilize processor and memory cell to realize described method.
The present invention can also implement by computer program, and described program comprises whole features that can realize the inventive method, when it is installed in the computer system, by operation, can realize method of the present invention.Computer program in the presents refers to: one group of any expression formula of instructing that can adopt any program language, code or symbol to write, this instruction group makes system have information processing capability, with direct realization specific function, or after carrying out following one or two step, realize specific function: a) convert other Languages, coding or symbol to; B) reproduce with different forms.
The present invention describes by several specific embodiments, it will be appreciated by those skilled in the art that, without departing from the present invention, can also carry out various conversion and be equal to alternative the present invention.In addition, at particular condition or concrete condition, can make various modifications to the present invention, and not depart from the scope of the present invention.
Claims (10)
1. the method for a processing signals is characterized in that, described method comprises: by first wireless signal of following the modulation of first wireless protocols and shared first amplifier of second wireless signal of following the modulation of second wireless protocols.
2. method according to claim 1 is characterized in that, described first wireless protocols is the IEEE802.11x agreement.
3. method according to claim 1 is characterized in that, described second wireless protocols is a Bluetooth protocol.
4. method according to claim 1 is characterized in that, described method further comprises: amplify one or both in described first wireless signal and described second wireless signal by described first amplifier.
5. machine readable memory, it is characterized in that, the computer program of its stored comprises that at least one is used for the code segment of processing signals, and described code segment is carried out by machine and made this machine carry out following steps: by first wireless signal of following the modulation of first wireless protocols and shared first amplifier of second wireless signal of following the modulation of second wireless protocols.
6. the system of a processing signals is characterized in that, described system comprises: first amplifier, it can amplify first wireless signal of following the modulation of first wireless protocols and second wireless signal of following the modulation of second wireless protocols.
7. system according to claim 6 is characterized in that, described first wireless protocols is the IEEE802.11x agreement.
8. system according to claim 6 is characterized in that, described second wireless protocols is a Bluetooth protocol.
9. the method for a processing signals is characterized in that, described method comprises: in the transmitting chain of reflector, by a plurality of shared at least one power amplifier that transmit of following corresponding a plurality of wireless protocols.
10. the system of a processing signals is characterized in that, described system comprises: at least one power amplifier in the transmitting chain of reflector, it is shared by a plurality of institutes that transmit that follow corresponding a plurality of wireless protocols.
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| US86881806P | 2006-12-06 | 2006-12-06 | |
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| CN 200710197190 Active CN101257329B (en) | 2006-12-06 | 2007-12-04 | Controlling method and system in emitter |
| CN2007101934009A Active CN101257321B (en) | 2006-12-06 | 2007-12-05 | Method and system for processing signal |
| CN2007101991016A Active CN101257322B (en) | 2006-12-06 | 2007-12-05 | Method and system for processing signal received by communication medium |
| CNA2007101968645A Pending CN101207420A (en) | 2006-12-06 | 2007-12-06 | Method and system for processing signal |
| CN200710196863.0A Expired - Fee Related CN101212441B (en) | 2006-12-06 | 2007-12-06 | Method and system for processing signal in communication system |
| CNA2007101968626A Pending CN101207389A (en) | 2006-12-06 | 2007-12-06 | Method and system for receiving and/or sending signals via a radio communication media |
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| CN200710199438.7A Active CN101207399B (en) | 2006-12-06 | 2007-12-03 | Method and system for controlling circuit in an emitter |
| CN 200710197190 Active CN101257329B (en) | 2006-12-06 | 2007-12-04 | Controlling method and system in emitter |
| CN2007101934009A Active CN101257321B (en) | 2006-12-06 | 2007-12-05 | Method and system for processing signal |
| CN2007101991016A Active CN101257322B (en) | 2006-12-06 | 2007-12-05 | Method and system for processing signal received by communication medium |
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| CN200710196863.0A Expired - Fee Related CN101212441B (en) | 2006-12-06 | 2007-12-06 | Method and system for processing signal in communication system |
| CNA2007101968626A Pending CN101207389A (en) | 2006-12-06 | 2007-12-06 | Method and system for receiving and/or sending signals via a radio communication media |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908903A (en) * | 2009-06-05 | 2010-12-08 | 联发科技股份有限公司 | Communication system |
| CN102195575A (en) * | 2010-03-12 | 2011-09-21 | 三星电机株式会社 | Power amplifier system |
| CN101789833B (en) * | 2009-01-22 | 2014-04-09 | 安立股份有限公司 | Whip transmission characteristics measurement device |
| US9025583B2 (en) | 2009-07-09 | 2015-05-05 | Mediatek Inc. | System for the coexistence between a plurality of wireless communication module sharing single antenna |
| US9504092B2 (en) | 2009-07-09 | 2016-11-22 | Mediatek Inc. | System for the coexistence between a plurality of wireless communications modules sharing single antenna |
| CN107743683A (en) * | 2015-06-19 | 2018-02-27 | 高通股份有限公司 | Changeable power supply and tunable load transimpedance power amplifier |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8275331B2 (en) * | 2009-04-21 | 2012-09-25 | Qualcomm, Incorporated | PA gain state switching based on waveform linearity |
| CN102130697B (en) | 2010-01-20 | 2015-05-27 | 华为技术有限公司 | Receiver, transmitter and feedback device, transceiver and signal processing method |
| US8467750B2 (en) * | 2010-10-21 | 2013-06-18 | Marvell World Trade Ltd. | Gain control in a shared RF front-end path for different standards that use the same frequency band |
| US8970427B2 (en) | 2011-05-18 | 2015-03-03 | Mediatek Singapore Pte. Ltd. | Phase-arrayed device and method for calibrating the phase-arrayed device |
| US20120294338A1 (en) | 2011-05-18 | 2012-11-22 | Jing-Hong Conan Zhan | Phase-arrayed transceiver |
| CN102904600B (en) * | 2011-07-29 | 2015-08-26 | 瑞昱半导体股份有限公司 | The communicator of wireless network and Bluetooth transmission can be carried out simultaneously |
| US8699972B2 (en) * | 2011-11-15 | 2014-04-15 | Qualcomm Incorporated | Transmit power calibration in a communication system |
| US8723568B1 (en) * | 2013-12-20 | 2014-05-13 | Qualcomm Incorporated | Local oscillator signal generation using delay locked loops |
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| CN105517200B (en) * | 2014-09-26 | 2020-02-21 | 联想(北京)有限公司 | Method and device for processing transmitted signal |
| CN105703731B (en) * | 2015-12-31 | 2017-12-22 | 嘉兴禾润电子科技有限公司 | Automatic gain control circuit for D class audio frequency power amplifier chips |
| SG10201610403YA (en) * | 2016-12-12 | 2018-07-30 | Huawei Int Pte Ltd | System and method for transmitting a wi-fi or a bluetooth signal using a shared transmitter |
| CN106936429A (en) * | 2017-03-07 | 2017-07-07 | 豪威科技(上海)有限公司 | Local oscillator and local oscillated signal production method |
| CN108365826A (en) * | 2017-12-26 | 2018-08-03 | 浙江禾川科技股份有限公司 | A kind of programmable gain amplifier |
| CN109445514B (en) * | 2018-09-26 | 2022-03-15 | 电子科技大学 | High-precision random frequency hopping DDS frequency synthesizer |
| CN112688714B (en) * | 2020-12-21 | 2022-05-10 | 维沃移动通信有限公司 | Radio frequency circuit, Bluetooth realization method and device and electronic equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005136896A (en) * | 2003-10-31 | 2005-05-26 | Sony Corp | Transceiver, transmitter, and receiver |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI103442B (en) * | 1993-09-24 | 1999-06-30 | Nokia Telecommunications Oy | Digital radio link system and radio link device |
| JPH09321681A (en) * | 1996-05-31 | 1997-12-12 | Fujitsu Ltd | Transmission power controller |
| JPH10173453A (en) * | 1996-12-09 | 1998-06-26 | Sony Corp | High-frequency variable gain amplifying device and radio communication equipment |
| US6208875B1 (en) * | 1998-04-08 | 2001-03-27 | Conexant Systems, Inc. | RF architecture for cellular dual-band telephones |
| US6084473A (en) * | 1998-12-29 | 2000-07-04 | Maxim Integrated Products, Inc. | Multipoint controlled high dynamic range variable gain amplifier |
| JP2001284998A (en) * | 2000-03-31 | 2001-10-12 | Mitsubishi Electric Corp | Wireless transmitter |
| US6960962B2 (en) * | 2001-01-12 | 2005-11-01 | Qualcomm Inc. | Local oscillator leakage control in direct conversion processes |
| US6917815B2 (en) * | 2001-03-14 | 2005-07-12 | California Institute Of Technology | Concurrent dual-band receiver architecture |
| EP1552619A1 (en) * | 2002-10-15 | 2005-07-13 | Sirific Wireless Corporation | Dc trimming circuit for radio frequency (rf) down-conversion |
| GB2394133A (en) * | 2002-10-17 | 2004-04-14 | Toumaz Technology Ltd | Radio receiver with reconfigurable filtering arrangement |
| WO2004054092A1 (en) * | 2002-12-11 | 2004-06-24 | Koninklijke Philips Electronics N.V. | Three-phase mixer-systems |
| US6882220B2 (en) * | 2003-06-27 | 2005-04-19 | Sige Semiconductor Inc. | Integrated power amplifier circuit |
| US7356317B2 (en) * | 2004-07-14 | 2008-04-08 | Silicon Storage Technology, Inc. | Adaptive-biased mixer |
-
2007
- 2007-12-03 CN CN200710199438.7A patent/CN101207399B/en active Active
- 2007-12-04 CN CN 200710197190 patent/CN101257329B/en active Active
- 2007-12-05 CN CN2007101934009A patent/CN101257321B/en active Active
- 2007-12-05 CN CN2007101991016A patent/CN101257322B/en active Active
- 2007-12-06 CN CNA2007101968645A patent/CN101207420A/en active Pending
- 2007-12-06 CN CN200710196863.0A patent/CN101212441B/en not_active Expired - Fee Related
- 2007-12-06 CN CNA2007101968626A patent/CN101207389A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005136896A (en) * | 2003-10-31 | 2005-05-26 | Sony Corp | Transceiver, transmitter, and receiver |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789833B (en) * | 2009-01-22 | 2014-04-09 | 安立股份有限公司 | Whip transmission characteristics measurement device |
| CN101908903A (en) * | 2009-06-05 | 2010-12-08 | 联发科技股份有限公司 | Communication system |
| US9025583B2 (en) | 2009-07-09 | 2015-05-05 | Mediatek Inc. | System for the coexistence between a plurality of wireless communication module sharing single antenna |
| US9504092B2 (en) | 2009-07-09 | 2016-11-22 | Mediatek Inc. | System for the coexistence between a plurality of wireless communications modules sharing single antenna |
| CN102195575A (en) * | 2010-03-12 | 2011-09-21 | 三星电机株式会社 | Power amplifier system |
| CN107743683A (en) * | 2015-06-19 | 2018-02-27 | 高通股份有限公司 | Changeable power supply and tunable load transimpedance power amplifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101257321B (en) | 2011-12-14 |
| CN101257321A (en) | 2008-09-03 |
| CN101257322B (en) | 2012-05-30 |
| CN101212441B (en) | 2015-04-29 |
| CN101257322A (en) | 2008-09-03 |
| CN101207399A (en) | 2008-06-25 |
| CN101207389A (en) | 2008-06-25 |
| CN101207399B (en) | 2014-06-04 |
| CN101257329B (en) | 2013-03-20 |
| CN101257329A (en) | 2008-09-03 |
| CN101212441A (en) | 2008-07-02 |
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