CN102404020A - Power amplification module, multimode radio frequency transceiver and multimode terminal - Google Patents
Power amplification module, multimode radio frequency transceiver and multimode terminal Download PDFInfo
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- CN102404020A CN102404020A CN201110346135XA CN201110346135A CN102404020A CN 102404020 A CN102404020 A CN 102404020A CN 201110346135X A CN201110346135X A CN 201110346135XA CN 201110346135 A CN201110346135 A CN 201110346135A CN 102404020 A CN102404020 A CN 102404020A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/0057—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
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Abstract
The invention provides a power amplification module, a multimode radio frequency transceiver, a radio frequency front end module, a multimode terminal and a method for sending signals by the multimode terminal, wherein the power amplification module comprises a control module, a low-frequency amplifier and a high-frequency amplifier which are connected with the control module, and the control module is used for sending working mode indicating signals to the low-frequency amplifier or the high-frequency amplifier according to control signals from a baseband chip; the low-frequency amplifier is used for receiving a low-frequency transmitting signal and a working mode indicating signal sent by the control module, amplifying the low-frequency transmitting signal in a working mode indicated by the working mode indicating signal and then outputting the amplified low-frequency transmitting signal; the high-frequency amplifier is used for receiving a high-frequency transmitting signal and a working mode indicating signal sent by the control module, amplifying the high-frequency transmitting signal in a working mode indicated by the working mode indicating signal and then outputting the high-frequency transmitting signal. The multi-mode terminal comprising the power amplification module effectively reduces the area occupied by the PCB.
Description
Technical Field
The present invention relates to mobile communication technologies, and in particular, to a power amplification module, a multimode radio transceiver, a radio frequency front end module, a multimode terminal, and a method for transmitting a signal by a multimode terminal.
Background
Currently, in the architecture scheme of a time division synchronous code division multiple access (TD-SCDMA)/global system for Mobile Communication (GSM) dual-mode Mobile phone, a common implementation method is, as shown in fig. 1, requiring a baseband chip 100, an antenna switch module 200, a GSM radio frequency transceiver 300, a GSM power amplifier 310, a TD-SCDMA radio frequency transceiver 400, a TD-SCDMA power amplifier 410, at least one GSM receive filter (RX SAW)500, and at least one TD-SCDMA receive filter 510.
The above architecture scheme requires more than eight chips, which makes the circuit structure complicated, occupies a large amount of Printed Circuit Board (PCB) area, is not favorable for reducing cost, and is also not favorable for realizing miniaturization of the terminal.
Disclosure of Invention
The embodiment of the invention provides a power amplification module, a multimode radio frequency transceiver, a radio frequency front-end module, a multimode terminal and a method for sending signals by the multimode terminal, and aims to solve the problem that the conventional multimode terminal occupies a large PCB area.
The embodiment of the invention provides a power amplification module, which is applied to a transmitting channel of a multi-mode terminal, and comprises a control module, and a low-frequency amplifier and a high-frequency amplifier which are connected with the control module, wherein:
the control module is used for sending a working mode indicating signal to the low-frequency amplifier or the high-frequency amplifier according to a control signal from a baseband chip;
the low-frequency amplifier is used for receiving a low-frequency transmitting signal and a working mode indicating signal sent by the control module, amplifying the low-frequency transmitting signal in a working mode indicated by the working mode indicating signal and then outputting the amplified low-frequency transmitting signal;
the high-frequency amplifier is used for receiving a high-frequency transmitting signal and a working mode indicating signal sent by the control module, amplifying the high-frequency transmitting signal in a working mode indicated by the working mode indicating signal and then outputting the amplified high-frequency transmitting signal.
Preferably, the control module is configured to send a saturation operating mode indication signal to the low-frequency amplifier when the control signal indicates that the signal in the current transmission channel is a low-frequency transmission signal of the first mode signal; when the control signal indicates that the signal in the current transmitting channel is a second mode signal, sending a linear working mode indicating signal to the high-frequency amplifier; or when the control signal indicates that the signal in the current transmitting channel is the high-frequency transmitting signal of the first mode signal, sending a saturated working mode indicating signal to the high-frequency amplifier.
Preferably, the first mode signal is a global system for mobile communications (GSM) signal;
the second mode signal is a time division synchronous code division multiple access (TD-SCDMA) signal or a Personal Handyphone System (PHS) signal.
The embodiment of the invention also provides a multimode radio frequency transceiver, which is applied to a multimode terminal and comprises the following components:
the frequency conversion module is used for converting a baseband transmission signal of a first mode signal sent by the baseband chip into a low-frequency transmission signal or a high-frequency transmission signal and converting a baseband transmission signal of a second mode signal sent by the baseband chip into a high-frequency transmission signal under the control of the baseband chip;
and the output module is used for outputting the low-frequency transmitting signal converted by the frequency conversion module through a low-frequency band transmitting port and outputting the high-frequency transmitting signal converted by the frequency conversion module through a high-frequency band transmitting port.
Preferably, the first mode signal is a global system for mobile communications (GSM) signal; the second mode signal is a time division synchronous code division multiple access (TD-SCDMA) signal or a Personal Handyphone System (PHS) signal.
The embodiment of the present invention further provides a radio frequency front end module, which is applied to a multimode terminal, and the radio frequency front end module includes an antenna switch module, a first filter and a second filter, wherein:
the first filter is used for receiving a first mode receiving signal sent by the antenna switch module, filtering the first mode receiving signal and outputting the first mode receiving signal;
the second filter is configured to receive a second mode receiving signal sent by the antenna switch module, filter the second mode receiving signal, and output the second mode receiving signal;
the antenna switch module is configured to receive a low-frequency transmission signal of a first mode signal or a high-frequency transmission signal of the first mode signal or a second mode signal, and send the first mode reception signal to the first filter and send the second mode reception signal to the second filter.
Preferably, the first mode receiving signal is a global system for mobile communications (GSM) receiving signal; the second mode receiving signal is a time division synchronous code division multiple access (TD-SCDMA) receiving signal or a Personal Handyphone System (PHS) receiving signal; and/or
The first mode signal is a global system for mobile communications (GSM) signal; the second mode signal is a time division synchronous code division multiple access (TD-SCDMA) signal or a Personal Handyphone System (PHS) signal.
The embodiment of the invention provides a multi-mode terminal, which comprises a baseband chip, a multi-mode radio frequency transceiver, a power amplification module and a radio frequency front end module which are connected in sequence, wherein:
the multimode radio frequency transceiver adopts the multimode radio frequency transceiver;
the power amplification module adopts the power amplification module;
the radio frequency front end module adopts the radio frequency front end module.
The embodiment of the invention also provides a multi-mode terminal, which comprises a baseband chip, a multi-mode radio frequency transceiver, a power amplification module and a radio frequency front end module which are connected in sequence, and the multi-mode terminal also comprises a switch circuit positioned between the multi-mode radio frequency transceiver and the power amplification module;
the power amplification module adopts the power amplification module;
the radio frequency front-end module adopts the radio frequency front-end module;
the switching circuit is configured to switch a low-frequency transmission signal of the first mode signal sent by the multi-mode radio frequency transceiver to a low-frequency amplifier in the power amplification module, or switch a high-frequency transmission signal or a second mode signal of the first mode signal sent by the multi-mode radio frequency transceiver to a high-frequency amplifier in the power amplification module.
The embodiment of the invention also provides a method for sending signals by the multimode terminal, which comprises the following steps:
the power amplification module amplifies a low-frequency transmitting signal of the received first mode signal or a high-frequency transmitting signal of the first mode signal in a saturation working mode under the control of the baseband chip and outputs the amplified low-frequency transmitting signal or the amplified high-frequency transmitting signal to the radio frequency front-end module; or, the power amplification module amplifies the received second mode signal in the linear working mode and outputs the amplified second mode signal to the radio frequency front-end module under the control of the baseband chip;
the radio frequency front end module transmits the received signal.
Preferably, the power amplification module amplifies the received second mode signal in the linear operating mode and outputs the amplified second mode signal to the radio frequency front end module under the control of the baseband chip, and includes:
a high-frequency amplifier in the power amplification module amplifies a received second mode signal in a linear working mode under the control of a baseband chip and outputs the amplified second mode signal to a radio frequency front-end module; or,
the power amplification module amplifies a low-frequency transmission signal of a received first mode signal or a high-frequency transmission signal of the first mode signal in a saturation working mode under the control of a baseband chip and outputs the amplified low-frequency transmission signal or the amplified high-frequency transmission signal to a radio frequency front end module, and the power amplification module comprises:
a low-frequency amplifier in the power amplification module amplifies a low-frequency transmitting signal of a received first mode signal in a saturation working mode under the control of a baseband chip and outputs the amplified low-frequency transmitting signal to a radio frequency front-end module; or
And the high-frequency amplifier in the power amplification module amplifies the received high-frequency transmitting signal of the first mode signal in a saturation working mode and outputs the amplified high-frequency transmitting signal to the radio frequency front-end module under the control of the baseband chip.
Preferably, before the low frequency amplifier amplifies the received signal, the method further comprises:
the multimode radio frequency transceiver converts a first mode baseband transmitting signal sent by the baseband chip into a corresponding low-frequency transmitting signal and then outputs the low-frequency transmitting signal to the low-frequency amplifier; or the switching circuit switches a low-frequency transmitting signal of the first mode signal sent by the multi-mode radio frequency transceiver to the low-frequency amplifier; or
Before the high frequency amplifier amplifies the received signal, the method further comprises:
the multimode radio frequency transceiver converts a first mode baseband transmitting signal or a second mode baseband transmitting signal sent by the baseband chip into a corresponding high-frequency transmitting signal and then outputs the high-frequency transmitting signal to the high-frequency amplifier; or the switching circuit switches the high-frequency transmitting signal or the second mode signal of the first mode signal sent by the multi-mode radio frequency transceiver to the high-frequency amplifier.
Preferably, the first mode signal is a global system for mobile communications (GSM) signal; the second mode signal is a time division synchronous code division multiple access (TD-SCDMA) signal or a Personal Handyphone System (PHS) signal.
The power amplification module comprising the low-frequency amplifier and the high-frequency amplifier effectively saves the number of the power amplifiers by dividing radio-frequency signals of various modes and various frequency bands into the low-frequency signals and the high-frequency signals and amplifying the low-frequency signals and the high-frequency signals by the corresponding amplifiers; and further effectively reducing the area of the PCB occupied by the multimode terminal comprising the power amplification module.
Drawings
FIG. 1 is a schematic diagram of a conventional TD-SCDMA/GSM dual-mode mobile phone architecture;
fig. 2 is a schematic structural diagram of a dual-mode terminal according to a first embodiment of the present invention;
fig. 3 is a schematic diagram of internal architectures of a dual-mode power amplification module and a radio frequency front end module according to an embodiment of the present invention and signal connections thereof;
fig. 4 is a schematic structural diagram of a dual-mode terminal according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The embodiment of the invention provides a power amplification module, which is applied to a transmitting channel of a multi-mode terminal, and comprises a control module, and a low-frequency amplifier and a high-frequency amplifier which are connected with the control module, wherein:
the control module is used for sending a working mode indicating signal to the low-frequency amplifier or the high-frequency amplifier according to a control signal from a baseband chip;
the low-frequency amplifier is used for receiving a low-frequency transmitting signal and a working mode indicating signal sent by the control module, amplifying the low-frequency transmitting signal in a working mode indicated by the working mode indicating signal and then outputting the amplified low-frequency transmitting signal;
the high-frequency amplifier is used for receiving a high-frequency transmitting signal and a working mode indicating signal sent by the control module, amplifying the high-frequency transmitting signal in a working mode indicated by the working mode indicating signal and then outputting the amplified high-frequency transmitting signal.
The control module is used for sending a saturated working mode indicating signal to the low-frequency amplifier when the control signal indicates that the signal in the current transmitting channel is the low-frequency transmitting signal of the first mode signal; when the control signal indicates that the signal in the current transmitting channel is a second mode signal, sending a linear working mode indicating signal to the high-frequency amplifier; or when the control signal indicates that the signal in the current transmitting channel is the high-frequency transmitting signal of the first mode signal, sending a saturated working mode indicating signal to the high-frequency amplifier. The low-frequency amplifier is used for receiving a low-frequency transmitting signal of a first mode signal and a saturated working mode indicating signal sent by the control module, and amplifying and outputting the low-frequency transmitting signal of the first mode signal in a saturated working mode. The high-frequency amplifier is used for receiving a high-frequency transmitting signal of a first mode signal and a saturated working mode indicating signal sent by the control module, amplifying the high-frequency transmitting signal of the first mode signal in a saturated working mode and then outputting the amplified high-frequency transmitting signal; or receiving a second mode signal and a linear working mode indication signal sent by the control module, amplifying the second mode signal in the linear working mode, and outputting the second mode signal.
The first mode signal is a global system for mobile communications (GSM) signal; the second mode signal is a time division synchronous code division multiple access (TD-SCDMA) signal or a Personal Handyphone System (PHS) signal.
It should be noted that, the first mode signal, such as TD-SCDMA signal, has only high frequency signal and no low frequency signal, so that for TD-SCDMA transmission signal, it can only be amplified by the high frequency amplifier in linear operation mode; however, the second mode signal, such as the GSM signal, has both a high frequency signal and a low frequency signal, and the corresponding signals need to be amplified by the high frequency amplifier and the low frequency amplifier, respectively.
In addition, as is known to those skilled in the art, the low frequency transmission signal and the high frequency transmission signal mentioned in the embodiments of the present invention are a relative concept, that is, the frequency band covered by the low frequency transmission signal is lower than the frequency band covered by the high frequency transmission signal.
The power amplification module can be a GSM/TD-SCDMA power amplification module, and the module does not simply integrate and package the traditional GSM and TD-SCDMA power amplifiers in one chip, but only comprises two low-frequency and high-frequency power amplifiers and one control module. Namely, the signal input port of the dual-mode power amplification module is not distributed according to GSM and TD-SCDMA signals, but is divided into two signal ports of low frequency and high frequency; similarly, the output port is divided into two signal ports of low frequency and high frequency. The power amplifier is controlled in a linear working mode when amplifying TD-SCDMA signals; when amplifying a GSM signal, the GSM signal is controlled to be in a saturation working mode.
According to the power amplification module comprising the low-frequency amplifier and the high-frequency amplifier, the radio-frequency signals in various modes and various frequency bands are only divided into the low-frequency signals and the high-frequency signals, and the low-frequency signals and the high-frequency signals are amplified by the corresponding amplifiers, so that the number of the power amplifiers is effectively saved, and the area of a PCB occupied by the power amplification module is effectively reduced.
In order to implement the functions of the power amplifier, an embodiment of the present invention further provides a multimode rf transceiver applied to a multimode terminal, where the multimode rf transceiver includes:
the frequency conversion module is used for converting a baseband transmission signal of a first mode signal sent by the baseband chip into a low-frequency transmission signal or a high-frequency transmission signal and converting a baseband transmission signal of a second mode signal sent by the baseband chip into a high-frequency transmission signal under the control of the baseband chip;
and the output module is used for outputting the low-frequency transmitting signal converted by the frequency conversion module through a low-frequency band transmitting port and outputting the high-frequency transmitting signal converted by the frequency conversion module through a high-frequency band transmitting port.
Wherein the first mode signal is a global system for mobile communications (GSM) signal; the second mode signal is a time division synchronous code division multiple access (TD-SCDMA) signal or a Personal Handyphone System (PHS) signal.
The embodiment of the present invention further provides a radio frequency front end module, which is applied to a multimode terminal, and the radio frequency front end module includes an antenna switch module, a first filter and a second filter, wherein:
the first filter is used for receiving a first mode receiving signal sent by the antenna switch module, filtering the first mode receiving signal and outputting the first mode receiving signal;
the second filter is configured to receive a second mode receiving signal sent by the antenna switch module, filter the second mode receiving signal, and output the second mode receiving signal;
the antenna switch module is configured to receive a low-frequency transmission signal of a first mode signal or a high-frequency transmission signal of the first mode signal or a second mode signal, and send the first mode reception signal to the first filter and send the second mode reception signal to the second filter.
Wherein the first mode receiving signal is a global system for mobile communications (GSM) receiving signal; the second mode receiving signal is a time division synchronous code division multiple access (TD-SCDMA) receiving signal or a Personal Handyphone System (PHS) receiving signal; the first mode signal is a global system for mobile communications (GSM) signal; the second mode signal is a time division synchronous code division multiple access (TD-SCDMA) signal or a Personal Handyphone System (PHS) signal.
As shown in fig. 2, which is a schematic structural diagram of a dual-mode terminal according to a first embodiment of the present invention, the dual-mode terminal includes: a baseband chip 100, a TD-SCDMA/GSM dual-mode radio frequency transceiver 200, a TD-SCDMA/GSM dual-mode power amplification module 300, and the radio frequency front end module 400; the structures of the TD-SCDMA/GSM dual-mode radio transceiver 200 and the TD-SCDMA/GSM dual-mode power amplifying module 300 are shown in fig. 3.
The dual-mode radio frequency transceiver matched with the dual-mode power amplification module is different from the prior art, and the output ports of the dual-mode radio frequency transceiver are divided according to the low-frequency LB and the high-frequency HB and are not distinguished due to different signals.
As shown in fig. 3, it is a schematic diagram of the internal architecture and signal connection of the dual-mode power amplification module and the rf front-end module according to the embodiment of the present invention, wherein the rf front-end module 400 mainly includes three parts: an antenna switch module 401, a GSM receive surface acoustic wave filter (RX SAW)402, and a TD-scdma RX SAW 403.
In the receiving link of the dual-mode terminal with the above architecture, an electromagnetic wave signal is received by an antenna and then enters an antenna switch module 401 in the radio frequency front-end module 400, and under the control of the baseband chip 100, the antenna switch module selects a corresponding receiving channel and sends a GSM radio frequency signal to a GSM receiving filter (GSM rx SAW) 402; the TD-SCDMA radio frequency signal is fed into TD-SCDMA receive filter (TD-SCDMA RX SAW) 403. The filtered radio frequency signal enters dual mode radio frequency transceiver 200. The dual-mode rf transceiver 200 adopts a zero-if receiving scheme to convert the received rf signal directly into a baseband I/Q signal, and send the baseband I/Q signal to the baseband chip 100, and the baseband chip 100 performs demodulation, decoding, and other processing to restore the original signal.
In the transmission link of the dual-mode terminal with the above architecture, the baseband chip 100 completes the processing of encoding, modulating, etc. of the original signal to obtain the I/Q signal of GSM or TD-SCDMA, and sends the I/Q signal to the dual-mode radio transceiver 200, and the transmission part in the dual-mode radio transceiver 200 adopts the up-conversion scheme of direct conversion to complete the change processing of the input I/Q signal to obtain the radio frequency modulation signal. The output port of the dual-mode rf transceiver 200 is not differentiated according to the difference between GSM and TD-SCDMA signals, and is only divided into two output ports, i.e., a low frequency output port and a high frequency output port. After passing through the transmit filter, the Low Band (LB) or High Band (HB) rf modulation signal enters the Low frequency or high frequency input terminal of the dual-mode power amplifier 300, respectively. The frequency range of the LB transmitting signal ranges from 824MHz to 915MHz, and the frequency range of the HB transmitting signal ranges from 1710MHz to 2025 MHz. Meanwhile, the baseband chip sends out a control signal, when the GSM signal is amplified, the static working point of the power amplifier is adjusted to enable the power amplifier to work in class C, and meanwhile, the radio frequency output power of the radio frequency transceiver is adjusted to drive the power amplifier to enter a saturated working state, so that the high efficiency of the amplifier can be ensured when the GSM signal is amplified; when amplifying TD-SCDMA signals, the control signal adjusts the static working point of the power amplifier to make it work in AB class, and adjusts the radio frequency output power of the radio frequency transceiver, at this time, the power amplifier works in online state, which can ensure that each radio frequency index of TD-SCDMA meets the requirement.
Specifically, the method for the multimode terminal to transmit the signal includes:
under the control of a baseband chip, a power amplification module amplifies a received low-frequency transmission signal of a first mode signal or a received high-frequency transmission signal of the first mode signal in a saturation working mode and outputs the amplified low-frequency transmission signal or the amplified high-frequency transmission signal to a radio frequency front-end module; or, the power amplification module amplifies the received second mode signal in the linear working mode and outputs the amplified second mode signal to the radio frequency front-end module under the control of the baseband chip;
specifically, a high-frequency amplifier in the power amplification module amplifies a received second mode signal in a linear working mode under the control of a baseband chip and outputs the amplified second mode signal to a radio frequency front-end module; or, the low-frequency amplifier in the power amplification module amplifies a low-frequency transmission signal of the received first mode signal in a saturation working mode under the control of the baseband chip and outputs the amplified low-frequency transmission signal to the radio frequency front-end module; or the high-frequency amplifier in the power amplification module amplifies the received high-frequency transmitting signal of the first mode signal in a saturation working mode under the control of the baseband chip and outputs the amplified high-frequency transmitting signal to the radio frequency front-end module.
In addition, before the low frequency amplifier amplifies the received signal, the method further includes:
the multimode radio frequency transceiver converts a first mode baseband transmitting signal sent by the baseband chip into a corresponding low-frequency transmitting signal and then outputs the low-frequency transmitting signal to the low-frequency amplifier; or the switching circuit switches a low-frequency transmitting signal of the first mode signal sent by the multi-mode radio frequency transceiver to the low-frequency amplifier; or
Before the high frequency amplifier amplifies the received signal, the method further comprises:
the multimode radio frequency transceiver converts a first mode baseband transmitting signal or a second mode baseband transmitting signal sent by the baseband chip into a corresponding high-frequency transmitting signal and then outputs the high-frequency transmitting signal to the high-frequency amplifier; or the switching circuit switches the high-frequency transmitting signal or the second mode signal of the first mode signal sent by the multi-mode radio frequency transceiver to the high-frequency amplifier.
And step two, the radio frequency front end module sends a received signal, wherein the received signal is a low-frequency transmitting signal of the first mode signal, a high-frequency transmitting signal of the first mode signal or a second mode signal.
Specifically, the radio frequency signal after power amplification is sent to the antenna switch module 401 in the radio frequency front end module 400, and the antenna switch module 401 is controlled by the baseband chip 100 to select a corresponding transmission path and send the radio frequency signal to the main antenna of the mobile phone.
The first mode signal is a global system for mobile communications (GSM) signal; the second mode signal is a time division synchronous code division multiple access (TD-SCDMA) signal or a Personal Handyphone System (PHS) signal.
Fig. 4 is a schematic structural diagram of a dual-mode terminal according to a second embodiment of the present invention, which is different from the dual-mode terminal shown in fig. 2 in that the TD-SCDMA/GSM dual-mode rf transceiver 200 still uses the transceiver scheme of the prior art, i.e., the output ports are still divided according to TD-SCDMA and GSM signals. The radio frequency output end of the TD-SCDMA/GSM dual-mode radio frequency transceiver 200 passes through a switch circuit 500, which switches the transmission signal to two paths of low frequency LB or high frequency HB for output, and sends the output to the TD-SCDMA/GSM dual-mode power amplification module 300.
Compared with the existing structure, the multimode terminal comprising the power amplification module at least reduces two large chips, greatly simplifies circuit connection, effectively reduces the area occupied by a PCB (printed circuit board), and is beneficial to realizing the miniaturization of the terminal.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing the relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module/unit in the above embodiments may be implemented in the form of hardware, and may also be implemented in the form of a software functional module. The present invention is not limited to any specific form of combination of hardware and software.
The above embodiments are merely to illustrate the technical solutions of the present invention and not to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made without departing from the spirit and scope of the present invention and it should be understood that the present invention is to be covered by the appended claims.
Claims (13)
1. A power amplification module applied to a transmitting channel of a multimode terminal is characterized by comprising a control module, and a low-frequency amplifier and a high-frequency amplifier which are connected with the control module, wherein:
the control module is used for sending a working mode indicating signal to the low-frequency amplifier or the high-frequency amplifier according to a control signal from a baseband chip;
the low-frequency amplifier is used for receiving a low-frequency transmitting signal and a working mode indicating signal sent by the control module, amplifying the low-frequency transmitting signal in a working mode indicated by the working mode indicating signal and then outputting the amplified low-frequency transmitting signal;
the high-frequency amplifier is used for receiving a high-frequency transmitting signal and a working mode indicating signal sent by the control module, amplifying the high-frequency transmitting signal in a working mode indicated by the working mode indicating signal and then outputting the amplified high-frequency transmitting signal.
2. The power amplification module of claim 1, wherein:
the control module is used for sending a saturated working mode indicating signal to the low-frequency amplifier when the control signal indicates that the signal in the current transmitting channel is the low-frequency transmitting signal of the first mode signal; when the control signal indicates that the signal in the current transmitting channel is a second mode signal, sending a linear working mode indicating signal to the high-frequency amplifier; or when the control signal indicates that the signal in the current transmitting channel is the high-frequency transmitting signal of the first mode signal, sending a saturated working mode indicating signal to the high-frequency amplifier.
3. The power amplification module of claim 2, wherein:
the first mode signal is a global system for mobile communications (GSM) signal;
the second mode signal is a time division synchronous code division multiple access (TD-SCDMA) signal or a Personal Handyphone System (PHS) signal.
4. A multimode radio frequency transceiver is applied to a multimode terminal, and is characterized in that the multimode radio frequency transceiver comprises:
the frequency conversion module is used for converting a baseband transmission signal of a first mode signal sent by the baseband chip into a low-frequency transmission signal or a high-frequency transmission signal and converting a baseband transmission signal of a second mode signal sent by the baseband chip into a high-frequency transmission signal under the control of the baseband chip;
and the output module is used for outputting the low-frequency transmitting signal converted by the frequency conversion module through a low-frequency band transmitting port and outputting the high-frequency transmitting signal converted by the frequency conversion module through a high-frequency band transmitting port.
5. The multimode radio frequency transceiver of claim 4, wherein:
the first mode signal is a global system for mobile communications (GSM) signal; the second mode signal is a time division synchronous code division multiple access (TD-SCDMA) signal or a Personal Handyphone System (PHS) signal.
6. A radio frequency front end module is applied to a multimode terminal, and is characterized in that the radio frequency front end module comprises an antenna switch module, a first filter and a second filter, wherein:
the first filter is used for receiving a first mode receiving signal sent by the antenna switch module, filtering the first mode receiving signal and outputting the first mode receiving signal;
the second filter is configured to receive a second mode receiving signal sent by the antenna switch module, filter the second mode receiving signal, and output the second mode receiving signal;
the antenna switch module is configured to receive a low-frequency transmission signal of a first mode signal or a high-frequency transmission signal of the first mode signal or a second mode signal, and send the first mode reception signal to the first filter and send the second mode reception signal to the second filter.
7. The radio frequency front end module of claim 6, wherein:
the first mode receiving signal is a global system for mobile communications (GSM) receiving signal; the second mode receiving signal is a time division synchronous code division multiple access (TD-SCDMA) receiving signal or a Personal Handyphone System (PHS) receiving signal; and/or
The first mode signal is a global system for mobile communications (GSM) signal; the second mode signal is a time division synchronous code division multiple access (TD-SCDMA) signal or a Personal Handyphone System (PHS) signal.
8. A multimode terminal comprises a baseband chip, a multimode radio frequency transceiver, a power amplification module and a radio frequency front end module which are connected in sequence, and is characterized in that:
the multi-mode radio frequency transceiver adopts the multi-mode radio frequency transceiver as claimed in claim 4 or 5;
the power amplification module adopts the power amplification module as claimed in claim 1, 2 or 3;
the radio frequency front end module adopts the radio frequency front end module as claimed in claim 6 or 7.
9. A multimode terminal comprises a baseband chip, a multimode radio frequency transceiver, a power amplification module and a radio frequency front end module which are connected in sequence, and is characterized by also comprising a switch circuit positioned between the multimode radio frequency transceiver and the power amplification module;
the power amplification module adopts the power amplification module as claimed in claim 1, 2 or 3;
the radio frequency front end module adopts the radio frequency front end module of claim 6 or 7;
the switching circuit is configured to switch a low-frequency transmission signal of the first mode signal sent by the multi-mode radio frequency transceiver to a low-frequency amplifier in the power amplification module, or switch a high-frequency transmission signal or a second mode signal of the first mode signal sent by the multi-mode radio frequency transceiver to a high-frequency amplifier in the power amplification module.
10. A method for a multimode terminal to transmit a signal, the method comprising:
the power amplification module amplifies a low-frequency transmitting signal of the received first mode signal or a high-frequency transmitting signal of the first mode signal in a saturation working mode under the control of the baseband chip and outputs the amplified low-frequency transmitting signal or the amplified high-frequency transmitting signal to the radio frequency front-end module; or, the power amplification module amplifies the received second mode signal in the linear working mode and outputs the amplified second mode signal to the radio frequency front-end module under the control of the baseband chip;
the radio frequency front end module transmits the received signal.
11. The method of claim 10, wherein:
the power amplification module amplifies the received second mode signal in the linear working mode and outputs the amplified second mode signal to the radio frequency front end module under the control of the baseband chip, and the power amplification module comprises:
a high-frequency amplifier in the power amplification module amplifies a received second mode signal in a linear working mode under the control of a baseband chip and outputs the amplified second mode signal to a radio frequency front-end module; or,
the power amplification module amplifies a low-frequency transmission signal of a received first mode signal or a high-frequency transmission signal of the first mode signal in a saturation working mode under the control of a baseband chip and outputs the amplified low-frequency transmission signal or the amplified high-frequency transmission signal to a radio frequency front end module, and the power amplification module comprises:
a low-frequency amplifier in the power amplification module amplifies a low-frequency transmitting signal of a received first mode signal in a saturation working mode under the control of a baseband chip and outputs the amplified low-frequency transmitting signal to a radio frequency front-end module; or
And the high-frequency amplifier in the power amplification module amplifies the received high-frequency transmitting signal of the first mode signal in a saturation working mode and outputs the amplified high-frequency transmitting signal to the radio frequency front-end module under the control of the baseband chip.
12. The method of claim 11, wherein:
before the low frequency amplifier amplifies the received signal, the method further comprises:
the multimode radio frequency transceiver converts a first mode baseband transmitting signal sent by the baseband chip into a corresponding low-frequency transmitting signal and then outputs the low-frequency transmitting signal to the low-frequency amplifier; or the switching circuit switches a low-frequency transmitting signal of the first mode signal sent by the multi-mode radio frequency transceiver to the low-frequency amplifier; or
Before the high frequency amplifier amplifies the received signal, the method further comprises:
the multimode radio frequency transceiver converts a first mode baseband transmitting signal or a second mode baseband transmitting signal sent by the baseband chip into a corresponding high-frequency transmitting signal and then outputs the high-frequency transmitting signal to the high-frequency amplifier; or the switching circuit switches the high-frequency transmitting signal or the second mode signal of the first mode signal sent by the multi-mode radio frequency transceiver to the high-frequency amplifier.
13. The method according to any one of claims 10-12, wherein:
the first mode signal is a global system for mobile communications (GSM) signal;
the second mode signal is a time division synchronous code division multiple access (TD-SCDMA) signal or a Personal Handyphone System (PHS) signal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110346135XA CN102404020A (en) | 2011-11-04 | 2011-11-04 | Power amplification module, multimode radio frequency transceiver and multimode terminal |
| PCT/CN2012/076057 WO2013063926A1 (en) | 2011-11-04 | 2012-05-25 | Power amplification module, multimode radio frequency transceiver, and multimode terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110346135XA CN102404020A (en) | 2011-11-04 | 2011-11-04 | Power amplification module, multimode radio frequency transceiver and multimode terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102404020A true CN102404020A (en) | 2012-04-04 |
Family
ID=45885863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110346135XA Pending CN102404020A (en) | 2011-11-04 | 2011-11-04 | Power amplification module, multimode radio frequency transceiver and multimode terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102404020A (en) |
| WO (1) | WO2013063926A1 (en) |
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| WO2013063926A1 (en) * | 2011-11-04 | 2013-05-10 | 中兴通讯股份有限公司 | Power amplification module, multimode radio frequency transceiver, and multimode terminal |
| CN103633949A (en) * | 2012-08-21 | 2014-03-12 | 唯捷创芯(天津)电子技术有限公司 | Multimode power amplifier, multimode switching method and mobile terminal of multimode power amplifier |
| CN105450249A (en) * | 2014-08-30 | 2016-03-30 | 展讯通信（上海）有限公司 | Compatible method for multiple communication modes in mobile terminal and mobile terminal |
| CN105763217A (en) * | 2015-01-05 | 2016-07-13 | 美国莱迪思半导体公司 | Low Power Operations In Wireless Tunneling Transceiver |
| CN106208983A (en) * | 2016-06-30 | 2016-12-07 | 唯捷创芯(天津)电子技术股份有限公司 | Towards time-multiplexed multimode power amplifier module, chip and communication terminal |
| CN109150211A (en) * | 2017-06-19 | 2019-01-04 | 大唐移动通信设备有限公司 | A kind of wideband emitter |
| CN109905141A (en) * | 2019-03-29 | 2019-06-18 | 联想(北京)有限公司 | A kind of electronic equipment and signal processing method |
| CN113676207A (en) * | 2021-08-12 | 2021-11-19 | Oppo广东移动通信有限公司 | Transmitter modules, radio frequency systems and communication equipment |
| WO2022160333A1 (en) * | 2021-02-01 | 2022-08-04 | 华为技术有限公司 | Communication circuit and terminal |
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| WO2013063926A1 (en) | 2013-05-10 |
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Application publication date: 20120404 |