CN104158505A - Radio frequency power amplification circuit, control method and terminal - Google Patents
Radio frequency power amplification circuit, control method and terminal Download PDFInfo
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- CN104158505A CN104158505A CN201310177796.3A CN201310177796A CN104158505A CN 104158505 A CN104158505 A CN 104158505A CN 201310177796 A CN201310177796 A CN 201310177796A CN 104158505 A CN104158505 A CN 104158505A
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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
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
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Abstract
The invention discloses a radio frequency power amplification circuit. The circuit includes a radio frequency transceiver, a band-pass filter, a first double-channel radio frequency switch, a radio frequency power amplifier an antenna; an output end of the band-pass filter is connected with an input end of the radio frequency power amplifier and an input end of the antenna through the first double-channel radio frequency switch, and an output end of the radio frequency power amplifier is connected with the input end of the antenna; the radio frequency power amplifier is connected with an enabling signal line; and the first double-channel radio frequency switch is connected with a universal input/output control signal line. The invention also discloses a radio frequency power amplification control method and terminal. By adoption of the technical scheme of the invention, power dissipation when the terminal is in a small-power transmitting state is reduced.
Description
Technical Field
The invention relates to a radio frequency power amplifier technology in the field of communication, in particular to a radio frequency power amplifier circuit, a control method and a terminal.
Background
With the increasing functions of terminals, Radio Frequency Power Amplifiers (RFPAs) mounted on the terminals are also increasing, which puts higher requirements on Power saving designs of the terminals. When the terminal operates in a transmission mode, the rf power amplifier is the most important power consuming device, and therefore, how to reduce the power consumption of the terminal by reducing the power consumption of the rf power amplifier is a great concern in the industry.
From the radio frequency power consumption perspective, most of radio frequency power amplifiers used by the current terminals are linear radio frequency power amplifiers, and the traditional linear radio frequency power amplifiers have two working modes of high gain and low gain. When the terminal transmits high power, a Radio Frequency transceiver (Radio Frequency transmitter) drives and controls the Radio Frequency power amplifier to be in a high gain mode, and the power consumption of the Radio Frequency power amplifier is larger at the moment; when the terminal transmits small power, the radio frequency transceiver drives and controls the radio frequency power amplifier to be in a low gain mode, and the power consumption of the radio frequency power amplifier is smaller at the moment. However, even in the low gain mode, the radio frequency power amplifier generates a certain power consumption. Moreover, the radio frequency power amplifier carried on the terminal at present often has only a high gain mode, and no matter the terminal is in a high power transmission state or a low power transmission state, the radio frequency power amplifier can only work in the high gain mode with larger power consumption, which has great influence on the power consumption of the terminal.
Fig. 1 is a schematic diagram of a conventional rf power amplifier circuit, as shown in fig. 1, a rf signal transmitted by an rf transceiver 21 is input to an rf power amplifier 24 through a band-pass filter 22, and meanwhile, an Enable (Enable) signal of the rf power amplifier 24 controls the rf power amplifier 24 to be turned on when the terminal is in a transmit mode, so that the rf signal is transmitted to an Antenna (ANT)25 through the rf power amplifier 24, and then the rf power amplifier 24 is turned off when the terminal is in an idle mode, thereby ending the whole transmission process. In the whole transmitting process, the radio-frequency signal power actually transmitted by the terminal is the radio-frequency signal power transmitted by the radio-frequency transceiver plus the gain of the radio-frequency power amplifier, and no matter the terminal is in a high-power transmitting state or a low-power transmitting state, for the radio-frequency power amplifier only in a high-gain mode, the radio-frequency power amplifier is in a fixed gain (amplification factor) mode, so that certain power consumption is consumed, the power consumption is increased invisibly, and the energy-saving efficiency is low.
Disclosure of Invention
In view of the above, the present invention provides a radio frequency power amplifier circuit, a control method and a terminal, which can reduce power consumption of the terminal in a low power transmission state.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a radio frequency power amplifier circuit, which comprises a radio frequency transceiver, a band-pass filter, a first dual-channel radio frequency switch, a radio frequency power amplifier and an antenna, wherein the radio frequency transceiver is connected with the band-pass filter; wherein,
the input end of the band-pass filter is connected with the output end of the radio frequency transceiver, the output end of the band-pass filter is respectively connected with the input end of the radio frequency power amplifier and the input end of the antenna through the first dual-channel radio frequency switch, and the output end of the radio frequency power amplifier is connected with the input end of the antenna; the radio frequency power amplifier is connected with an enabling signal wire; and the first dual-channel radio frequency switch is connected with a General Purpose Input/Output (GPIO) control signal line.
In the above scheme, when the transmission power to be output by the antenna is greater than or equal to a set threshold value, the GPIO control signal line controls the first dual-channel rf switch to communicate with the rf power amplifier, and the enable signal line enables the rf power amplifier to be in a working state.
In the above scheme, when the transmission power to be output by the antenna is less than or equal to a set threshold value, the radio frequency power amplifier is in a closed state through an enable signal line, and the first dual-channel radio frequency switch is controlled to be communicated with the input end of the antenna through a GPIO control signal line.
In the above scheme, when the antenna is in a non-transmitting mode, the radio frequency power amplifier is in an off state through an enable signal line, and the first dual-channel radio frequency switch is controlled to be communicated with the input end of the antenna through a GPIO control signal line; or
Enabling the radio frequency power amplifier to be in a closed state through an enabling signal line, and controlling the first dual-channel radio frequency switch to be communicated with the input end of the radio frequency power amplifier through a GPIO control signal line.
In the above scheme, the circuit further includes a second dual-channel rf switch, one end of the second dual-channel rf switch is connected to the output end of the rf power amplifier and the first dual-channel rf switch, the other end of the second dual-channel rf switch is connected to the input end of the antenna, and the second dual-channel rf switch is connected to a GPIO control signal line;
wherein, the output end of the band-pass filter is connected with the input end of the antenna through the first dual-channel radio frequency switch, and the output end of the band-pass filter is:
the output end of the band-pass filter is connected with the input end of the antenna through the first dual-path radio frequency switch and the second dual-path radio frequency switch;
the output end of the radio frequency power amplifier is connected with the input end of the antenna, and the radio frequency power amplifier comprises the following components:
the output end of the radio frequency power amplifier is connected with the input end of the antenna through the second dual-path radio frequency switch.
In the above scheme, when the transmission power to be output by the antenna is greater than or equal to a set threshold value, the radio frequency power amplifier is in a working state through an enable signal line, and the first dual-channel radio frequency switch and the second dual-channel radio frequency switch are controlled to be communicated with the radio frequency power amplifier through a GPIO control signal line.
In the above scheme, when the transmission power to be output by the antenna is less than or equal to a set threshold value, the radio frequency power amplifier is in a closed state through an enable signal line, and the first dual-channel radio frequency switch and the second dual-channel radio frequency switch are controlled through a GPIO control signal line so that the output end of the band pass filter is directly communicated with the input end of the antenna.
In the above scheme, when the antenna is in a non-transmitting mode, the rf power amplifier is in an off state by enabling a signal line, and the first dual-channel rf switch and the second dual-channel rf switch are controlled by a GPIO control signal line so that the output terminal of the band-pass filter is directly connected to the input terminal of the antenna; or
Enabling the radio frequency power amplifier to be in a closed state through an enabling signal line, and controlling the first dual-path radio frequency switch and the second dual-path radio frequency switch through a GPIO control signal line to enable the output end of the band-pass filter to be communicated with the input end of the radio frequency power amplifier and enable the output end of the radio frequency power amplifier to be communicated with the input end of the antenna.
The invention also provides a radio frequency power amplifier control method applied to the radio frequency power amplifier circuit, which comprises the following steps:
and according to the transmitting power output by the antenna, controlling the first dual-path radio frequency switch by the GPIO control signal line to enable the radio frequency power amplifier to bypass or be in a path, and controlling the enabling state of the radio frequency power amplifier by the enabling signal line.
In the foregoing solution, the controlling the first dual-channel rf switch through a GPIO control signal line according to the transmit power output by the antenna to bypass or pass the rf power amplifier, and controlling the enable state of the rf power amplifier through an enable signal line includes:
when the transmitting power to be output by the antenna is greater than or equal to a set threshold value, controlling the first dual-channel radio frequency switch to be communicated with the radio frequency power amplifier through a GPIO control signal line, and enabling the radio frequency power amplifier to be in a working state through an enabling signal line;
when the transmitting power to be output by the antenna is smaller than or equal to a set threshold value, the radio frequency power amplifier is in a closed state through an enabling signal wire, and the first dual-channel radio frequency switch is controlled to be communicated with the input end of the antenna through a GPIO control signal wire.
In the above scheme, when the antenna is in a non-transmitting mode, the radio frequency power amplifier is in an off state through an enable signal line, and the first dual-channel radio frequency switch is controlled to be communicated with the input end of the antenna through a GPIO control signal line; or
Enabling the radio frequency power amplifier to be in a closed state through an enabling signal line, and controlling the first dual-channel radio frequency switch to be communicated with the input end of the radio frequency power amplifier through a GPIO control signal line.
In the above scheme, the method further comprises:
according to the transmitting power output by the antenna, the first dual-path radio frequency switch and the second dual-path radio frequency switch are controlled by the GPIO control signal line, so that the radio frequency power amplifier bypasses or is in a path, and the enable state of the radio frequency power amplifier is controlled by the enable signal line.
In the foregoing solution, the controlling the first dual rf switch and the second dual rf switch through a GPIO control signal line according to the transmit power output by the antenna to bypass or pass the rf power amplifier, and controlling the enable state of the rf power amplifier through an enable signal line includes:
when the transmitting power to be output by the antenna is greater than or equal to a set threshold value, enabling the radio frequency power amplifier to be in a working state through an enabling signal line, and controlling the first dual-path radio frequency switch and the second dual-path radio frequency switch to be communicated with the radio frequency power amplifier through a GPIO control signal line;
when the transmitting power to be output by the antenna is smaller than or equal to or smaller than a set threshold value, the radio frequency power amplifier is in a closed state through an enabling signal line, and the first dual-path radio frequency switch and the second dual-path radio frequency switch are controlled through a GPIO control signal line so that the output end of the band-pass filter is directly communicated with the input end of the antenna.
In the above solution, when the antenna is in a non-transmitting mode, the rf power amplifier is in an off state by enabling a signal line, and the first dual-channel rf switch and the second dual-channel rf switch are controlled by a GPIO control signal line to communicate the output terminal of the band-pass filter with the input terminal of the rf power amplifier and communicate the output terminal of the rf power amplifier with the input terminal of the antenna; or
Enabling the radio frequency power amplifier to be in a closed state through an enabling signal line, and controlling the first dual-path radio frequency switch and the second dual-path radio frequency switch through a GPIO control signal line to enable the output end of the band-pass filter to be directly communicated with the input end of the antenna.
The invention also provides a terminal which comprises the radio frequency power amplifier circuit.
According to the radio frequency power amplifier circuit, the control method and the terminal, the controllable double-path radio frequency switch is introduced, the radio frequency transmitting circuit is built again, so that the radio frequency power amplifier can be bypassed in a low-power transmitting state, the power consumption of the terminal in the low-power transmitting state is remarkably reduced, and the purpose of saving power is achieved. In addition, the technical scheme of the invention is particularly suitable for carrying the terminal only provided with the high-gain mode radio frequency power amplifier.
Drawings
FIG. 1 is a schematic diagram of a RF power amplifier circuit in the prior art;
FIG. 2 is a schematic diagram of a radio frequency power amplifier circuit according to the present invention;
FIG. 3 is a schematic diagram of another RF power amplifier circuit according to the present invention;
FIG. 4 is a schematic diagram of an implementation flow of a radio frequency power amplifier control method according to the present invention;
FIG. 5 is a schematic diagram of an implementation flow of another RF power amplifier control method according to the present invention;
fig. 6 is a schematic diagram of a radio frequency power amplifier flow of the mobile phone terminal according to the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the present invention, for convenience of description, the high gain mode rf power amplifier is an rf power amplifier having only a high gain mode.
Fig. 2 is a schematic diagram of the rf power amplifier circuit of the present invention, as shown in fig. 2, the circuit includes an rf transceiver 21, a band-pass filter 22, a first dual-path rf switch 23, an rf power amplifier 24 and an antenna 25; wherein,
the input end of the band-pass filter 22 is connected to the output end of the radio frequency transceiver 24, the output end of the band-pass filter 22 is connected to the input end of the radio frequency power amplifier 24 and the input end of the antenna 25 through the first dual-channel radio frequency switch 23, respectively, and the output end of the radio frequency power amplifier 24 is connected to the input end of the antenna 25; the radio frequency power amplifier 24 is connected with an enabling signal wire; the first dual-channel radio frequency switch 23 is connected with a general purpose input/output GPIO control signal line.
When the transmitting power to be output by the antenna is greater than or equal to a set threshold value, the first dual-channel radio frequency switch 23 is controlled to be communicated with the radio frequency power amplifier 24 through a GPIO control signal line, and the radio frequency power amplifier 24 is in a working state through an enabling signal line.
When the transmitting power to be output by the antenna is smaller than or equal to a set threshold value, the radio frequency power amplifier 24 is in a closed state through an enabling signal line, and the first dual-channel radio frequency switch 23 is controlled to be communicated with the input end of the antenna 25 through a GPIO control signal line.
When the antenna is to be in a non-transmitting mode, enabling the radio frequency power amplifier 24 to be in a closed state through an enabling signal line, and controlling the first dual-channel radio frequency switch 23 to be communicated with the input end of the antenna 25 through a GPIO control signal line; or
The radio frequency power amplifier 24 is in a closed state through an enabling signal line, and the first dual-channel radio frequency switch 23 is controlled to be communicated with the input end of the radio frequency power amplifier 24 through a GPIO control signal line.
The present invention considers the need of radio frequency signals, in principle one antenna can only be connected to one radio frequency channel, otherwise the radio frequency impedance is affected, and in order to completely isolate the radio frequency power amplifier 24, a two-way radio frequency switch can be added. Fig. 3 is a schematic diagram of another rf power amplifier circuit of the present invention, as shown in fig. 3, the circuit includes an rf transceiver 21, a band-pass filter 22, two-way rf switches, an rf power amplifier 24 and an antenna 25; for convenience of description, the two dual-path rf switches are denoted as a first dual-path rf switch 231 and a second dual-path rf switch 232; wherein,
one end of the second dual-channel rf switch 232 is connected to the output end of the rf power amplifier 24 and the first dual-channel rf switch 231, the other end of the second dual-channel rf switch 232 is connected to the input end of the antenna 25, and the second dual-channel rf switch 232 is connected to a GPIO control signal line;
the output end of the band-pass filter 22 is connected to the input end of the antenna 25 through the first dual-channel rf switch 231, and is:
the first dual rf switch 231 is connected to the input terminal of the antenna 25 through the first dual rf switch 231 and the second dual rf switch 232;
the output end of the radio frequency power amplifier 24 is connected to the input end of the antenna 25, and is:
the output of the rf power amplifier 24 is connected to the input of the antenna 25 through the second dual-path rf switch 232.
When the transmission power to be output by the antenna is greater than or equal to a set threshold value, the rf power amplifier 24 is in a working state through an enable signal line, and the first dual-channel rf switch 231 and the second dual-channel rf switch 232 are controlled through GPIO control signal lines so that the output end of the band-pass filter 22 is connected to the input end of the antenna 25 through the rf power amplifier 24.
Specifically, when the transmission power to be output by the antenna is greater than or equal to a set threshold value, the GPIO control signal line is used to control the first dual-channel rf switch 231 to communicate the output end of the band-pass filter 22 with the rf power amplifier 24, the GPIO control signal line is used to control the second dual-channel rf switch 232 to communicate the output end of the rf power amplifier 24 with the input end of the antenna 25, and the enable signal line is used to enable the rf power amplifier 24 to be in a working state.
When the transmission power to be output by the antenna is less than or equal to the set threshold value, the rf power amplifier 24 is in the off state through the enable signal line, and the first dual rf switch 231 and the second dual rf switch 232 are controlled by the GPIO control signal line to directly connect the output terminal of the band pass filter 22 with the input terminal of the antenna 25.
When the antenna is in a non-transmitting mode, the rf power amplifier 24 is in a turned-off state through an enable signal line, and the first dual-channel rf switch 231 and the second dual-channel rf switch 232 are controlled through GPIO control signal lines to connect the output terminal of the band-pass filter 22 with the input terminal of the rf power amplifier 24 and connect the output terminal of the rf power amplifier 24 with the input terminal of the antenna 25; or
The rf power amplifier 24 is turned off by an enable signal line, and the first dual rf switch 231 and the second dual rf switch 232 are controlled by GPIO control signal lines so that the output terminal of the band pass filter 22 is directly connected to the input terminal of the antenna 25.
Here, the specific value of the set threshold value may be set according to practical applications; preferably, the set threshold value is 0 dBm.
Here, the GPIO control signal may be generated by a radio frequency transceiver or a driving module according to a baseband signal.
Here, the band pass filter may be a Surface Acoustic Wave (SAW) filter.
Here, the first dual rf switch 231 and the second dual rf switch 232 are both dual switches supporting the rf band of the terminal.
Here, the radio frequency transceiver 21, the band-pass filter 22, the two-way radio frequency switch 23, and the radio frequency power amplifier 24 in the radio frequency power amplifier Circuit may all be integrated on a Printed Circuit Board (PCB), and the PCB is provided with a GPIO interface connection line.
In the prior art, the enabling signal of the radio frequency power amplifier is controlled to be turned on and off according to a set time code table; in order to keep the consistency with the prior art, in the invention, when the terminal is in a low-power transmitting state, the GPIO control signal controls the opening and closing time of the first dual-path radio frequency switch and the second dual-path radio frequency switch to be consistent with the opening and closing time of the radio frequency power amplifier enabling signal in the prior art, so as to ensure the consistency with the radio frequency transmitting performance when the terminal is in the low-power transmitting state in the prior art. When the terminal is in a high-power transmitting state, the GPIO control signal controls the opening and closing time of the first dual-path radio frequency switch and the second dual-path radio frequency switch to be consistent with the opening and closing time of an enabling signal of a radio frequency power amplifier in the prior art, so that the smooth transmission of radio frequency signals is ensured.
In addition, the technical scheme of the invention is particularly suitable for the terminal carrying the high-gain mode radio frequency power amplifier; the terminal can be a mobile phone, a tablet computer, an intelligent television and other terminals.
The invention also discloses a terminal which comprises the radio frequency power amplifier circuit shown in figure 2 or figure 3.
Specifically, the terminal is a mobile phone, a notebook, a personal digital assistant, a smart television, or a tablet computer.
For example, in the circuit of the invention, two-way radio frequency switches are added, so that the routing of the transmission path can be controlled according to specific situations. The radio frequency signal transmitted by the radio frequency transceiver is firstly input into a first double-circuit radio frequency switch through a band-pass filter, the radio frequency transceiver judges whether power amplification is needed, if the needed radio frequency power is less than or equal to 0dBm, the power amplification is not judged, and the GPIO control signal controls the first double-circuit radio frequency switch to be opened to a second double-circuit radio frequency switch end; meanwhile, the second dual-path radio frequency switch is opened to the first dual-path radio frequency switch end, namely the first dual-path radio frequency switch is communicated with the second dual-path radio frequency switch, the radio frequency power amplifier is bypassed, and meanwhile, the radio frequency power amplifier is controlled to be in a closed state by the radio frequency power amplifier enabling signal, so that a radio frequency access without power amplification is established; in this mode, the rf power amplifier does not need to consume power, and the rf signal power actually transmitted by the terminal is the rf signal power transmitted by the rf transceiver. If the required radio frequency power is greater than or equal to 0dBm, judging that power amplification is required, and controlling a first double-circuit radio frequency switch to be opened to a radio frequency power amplifier end by a GPIO control signal; meanwhile, the second dual-path radio frequency switch is opened to the radio frequency power amplifier end, meanwhile, the radio frequency power amplifier enables signals to control the radio frequency power amplifier to be in an open state, so that a radio frequency path for power amplification is established, in the mode, the radio frequency power amplifier needs to consume power, and the radio frequency signal power actually transmitted by the terminal is the radio frequency signal power transmitted by the radio frequency transceiver plus the fixed gain of the radio frequency power amplifier; in this mode, the power of the rf signal actually transmitted by the terminal is the same as that of the rf signal actually transmitted by the terminal in the prior art.
Fig. 4 is a schematic diagram of an implementation flow of a radio frequency power amplifier control method of the present invention, and as shown in fig. 4, the control method includes the following steps:
step 401: controlling the first dual-channel radio frequency switch by a GPIO control signal line according to the transmitting power output by the antenna;
step 402: the method comprises the steps of enabling a radio frequency power amplifier to bypass or pass through, and controlling the enabling state of the radio frequency power amplifier through an enabling signal line.
Specifically, the controlling the first dual-channel rf switch by the GPIO control signal line according to the transmission power output from the antenna to bypass or pass the rf power amplifier, and controlling the enable state of the rf power amplifier by the enable signal line includes:
when the transmitting power to be output by the antenna is greater than or equal to a set threshold value, controlling the first dual-channel radio frequency switch to be communicated with the radio frequency power amplifier through a GPIO control signal line, and enabling the radio frequency power amplifier to be in a working state through an enabling signal line;
when the transmitting power to be output by the antenna is smaller than or equal to a set threshold value, the radio frequency power amplifier is in a closed state through an enabling signal wire, and the first dual-channel radio frequency switch is controlled to be communicated with the input end of the antenna through a GPIO control signal wire.
Further, the method further comprises:
when the antenna is in a non-transmitting mode, enabling the radio frequency power amplifier to be in a closed state through an enabling signal line, and controlling the first dual-channel radio frequency switch to be communicated with the input end of the antenna through a GPIO control signal line; or
Enabling the radio frequency power amplifier to be in a closed state through an enabling signal line, and controlling the first dual-channel radio frequency switch to be communicated with the input end of the radio frequency power amplifier through a GPIO control signal line.
Fig. 5 is a schematic view of an implementation flow of another rf power amplifier control method of the present invention, as shown in fig. 5, the control method includes the following steps:
step 501: controlling the first dual-channel radio frequency switch and the second dual-channel radio frequency switch through a GPIO control signal line according to the transmitting power output by the antenna;
step 502: the method comprises the steps of enabling a radio frequency power amplifier to bypass or pass through, and controlling the enabling state of the radio frequency power amplifier through an enabling signal line.
Specifically, the controlling the first dual rf switch and the second dual rf switch through a GPIO control signal line according to the transmit power output by the antenna to bypass or pass the rf power amplifier, and controlling the enable state of the rf power amplifier through an enable signal line includes:
when the transmitting power to be output by the antenna is larger than or equal to a set threshold value, enabling the radio frequency power amplifier to be in a working state through an enabling signal line, and controlling the first dual-path radio frequency switch and the second dual-path radio frequency switch through a GPIO control signal line to enable the output end of the band-pass filter to be communicated with the input end of the antenna through the radio frequency power amplifier;
the controlling the first dual-channel radio frequency switch and the second dual-channel radio frequency switch through a GPIO control signal line according to the transmitting power output by the antenna to enable the radio frequency power amplifier to bypass or pass through, and controlling the enabling state of the radio frequency power amplifier through an enabling signal line, comprising:
when the transmitting power to be output by the antenna is smaller than or equal to or smaller than a set threshold value, the radio frequency power amplifier is in a closed state through an enabling signal line, and the first dual-path radio frequency switch and the second dual-path radio frequency switch are controlled through a GPIO control signal line so that the output end of the band-pass filter is directly communicated with the input end of the antenna.
Further, the method further comprises:
when the antenna is in a non-transmitting mode, the radio frequency power amplifier is in a closed state through an enabling signal line, the first dual-path radio frequency switch and the second dual-path radio frequency switch are controlled through a GPIO control signal line, so that the output end of the band-pass filter is communicated with the input end of the radio frequency power amplifier, and the output end of the radio frequency power amplifier is communicated with the input end of the antenna; or
Enabling the radio frequency power amplifier to be in a closed state through an enabling signal line, and controlling the first dual-path radio frequency switch and the second dual-path radio frequency switch through a GPIO control signal line to enable the output end of the band-pass filter to be directly communicated with the input end of the antenna.
The following describes a process of performing radio frequency power amplification on a mobile phone terminal by taking a mobile phone terminal applying the radio frequency power amplification circuit shown in fig. 3 as an example.
Fig. 6 is a schematic flow chart of the radio frequency power amplification performed by the mobile phone terminal according to the embodiment of the present invention, where the flow chart includes the following steps:
step 601: when the transmitting power to be output by an antenna of the mobile phone terminal is greater than or equal to a set threshold value, the GPIO control signal controls the first dual-path radio frequency switch and the second dual-path radio frequency switch to be communicated with the radio frequency power amplifier, and meanwhile, the radio frequency power amplifier enables a signal to control the radio frequency power amplifier to be in an open state; i.e. establishes a power amplified radio frequency path.
Here, the set threshold value is 0 dBm. And when the transmitting power of the terminal is more than 0dBm, the terminal is in a high-power transmitting state.
Step 602: when the transmitting power to be output by an antenna of the mobile phone terminal is smaller than or equal to or smaller than a set threshold value, the GPIO control signal controls the first dual-path radio frequency switch and the second dual-path radio frequency switch to be communicated; meanwhile, the radio frequency power amplifier is controlled to be in a closed state by the radio frequency power amplifier enabling signal; i.e. no power amplified radio frequency path is established.
Here, the set threshold value is 0 dBm. And when the transmitting power of the terminal is less than or equal to 0dBm, the terminal is in a low-power transmitting state.
Here, compared with the state that the mobile phone terminal is in low power transmission in the prior art, the first dual-path radio frequency switch is communicated with the second dual-path radio frequency switch to bypass the radio frequency power amplifier; and the radio frequency power amplifier is controlled to be in a closed state by the radio frequency power amplifier enabling signal, at the moment, the radio frequency power amplifier does not consume power, and the actual transmitting power of the terminal is the power of the radio frequency signal transmitted by the radio frequency transceiver. Therefore, the technical scheme of the invention reduces the call power consumption of the mobile phone terminal when the terminal is in a low-power transmitting state.
Step 603: when the mobile phone terminal is in an idle mode, the antenna of the mobile phone terminal is in a non-transmitting mode, the GPIO control signal controls the first dual-path radio frequency switch and the second dual-path radio frequency switch to be communicated with the radio frequency power amplifier, and meanwhile, the radio frequency power amplifier enables signals to control the radio frequency power amplifier to be in a closed state.
Here, when the mobile phone terminal is in the idle mode, the operation process in which the rf power amplifier is controlled to be in the off state by the rf power amplifier enable signal is the same as the operation process in the prior art, and is not described herein again.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (15)
1. A radio frequency power amplifier circuit is characterized by comprising a radio frequency transceiver, a band-pass filter, a first dual-path radio frequency switch, a radio frequency power amplifier and an antenna; wherein,
the input end of the band-pass filter is connected with the output end of the radio frequency transceiver, the output end of the band-pass filter is respectively connected with the input end of the radio frequency power amplifier and the input end of the antenna through the first dual-channel radio frequency switch, and the output end of the radio frequency power amplifier is connected with the input end of the antenna; the radio frequency power amplifier is connected with an enabling signal wire; and the first double-path radio frequency switch is connected with a general purpose input/output GPIO control signal wire.
2. The circuit of claim 1, wherein when the transmission power to be output by the antenna is greater than or equal to a predetermined threshold value, the first dual-channel rf switch is controlled to communicate with the rf power amplifier by a GPIO control signal line, and the rf power amplifier is enabled to operate by an enable signal line.
3. The circuit of claim 1, wherein when the transmission power to be output by the antenna is less than or equal to a predetermined threshold, the rf power amplifier is turned off by an enable signal line, and the first dual-channel rf switch is controlled to be connected to the input terminal of the antenna by a GPIO control signal line.
4. The circuit according to any one of claims 1 to 3, wherein when the antenna is to be in a non-transmission mode, the radio frequency power amplifier is in an off state through an enable signal line, and the first dual-channel radio frequency switch is controlled to be communicated with the input end of the antenna through a GPIO control signal line; or
Enabling the radio frequency power amplifier to be in a closed state through an enabling signal line, and controlling the first dual-channel radio frequency switch to be communicated with the input end of the radio frequency power amplifier through a GPIO control signal line.
5. The circuit of claim 1, further comprising a second dual rf switch, wherein one end of the second dual rf switch is connected to the output of the rf power amplifier and the first dual rf switch, the other end of the second dual rf switch is connected to the input of the antenna, and a GPIO control signal line is connected to the second dual rf switch;
wherein, the output end of the band-pass filter is connected with the input end of the antenna through the first dual-channel radio frequency switch, and the output end of the band-pass filter is:
the output end of the band-pass filter is connected with the input end of the antenna through the first dual-path radio frequency switch and the second dual-path radio frequency switch;
the output end of the radio frequency power amplifier is connected with the input end of the antenna, and the radio frequency power amplifier comprises the following components:
the output end of the radio frequency power amplifier is connected with the input end of the antenna through the second dual-path radio frequency switch.
6. The circuit of claim 5, wherein when the transmission power to be output by the antenna is greater than or equal to a predetermined threshold, the RF power amplifier is enabled by an enable signal line, and the first dual-channel RF switch and the second dual-channel RF switch are controlled to be connected to the RF power amplifier by a GPIO control signal line.
7. The circuit of claim 5, wherein when the transmission power to be output by the antenna is less than or equal to a predetermined threshold, the RF power amplifier is turned off by an enable signal line, and the first dual-channel RF switch and the second dual-channel RF switch are controlled by GPIO control signal lines to connect the output terminal of the band-pass filter directly to the input terminal of the antenna.
8. The circuit according to any one of claims 5 to 7, wherein when the antenna is in a non-transmitting mode, the radio frequency power amplifier is in an off state by enabling a signal line, and the first dual-path radio frequency switch and the second dual-path radio frequency switch are controlled by a GPIO control signal line to enable the output terminal of the band-pass filter to be directly connected with the input terminal of the antenna; or
Enabling the radio frequency power amplifier to be in a closed state through an enabling signal line, and controlling the first dual-path radio frequency switch and the second dual-path radio frequency switch through a GPIO control signal line to enable the output end of the band-pass filter to be communicated with the input end of the radio frequency power amplifier and enable the output end of the radio frequency power amplifier to be communicated with the input end of the antenna.
9. A radio frequency power amplifier control method applied to the radio frequency power amplifier circuit according to any one of claims 1 to 8, the method comprising:
and according to the transmitting power output by the antenna, controlling the first dual-path radio frequency switch by the GPIO control signal line to enable the radio frequency power amplifier to bypass or be in a path, and controlling the enabling state of the radio frequency power amplifier by the enabling signal line.
10. The method of claim 9, wherein the controlling the first dual-channel rf switch by a GPIO control signal line to bypass or pass the rf power amplifier and controlling the enabling state of the rf power amplifier by an enabling signal line according to the transmit power output from the antenna comprises:
when the transmitting power to be output by the antenna is greater than or equal to a set threshold value, controlling the first dual-channel radio frequency switch to be communicated with the radio frequency power amplifier through a GPIO control signal line, and enabling the radio frequency power amplifier to be in a working state through an enabling signal line;
when the transmitting power to be output by the antenna is smaller than or equal to a set threshold value, the radio frequency power amplifier is in a closed state through an enabling signal wire, and the first dual-channel radio frequency switch is controlled to be communicated with the input end of the antenna through a GPIO control signal wire.
11. The method of claim 9, wherein when the antenna is in a non-transmitting mode, the rf power amplifier is turned off by an enable signal line, and the first dual-channel rf switch is controlled to communicate with the input terminal of the antenna by a GPIO control signal line; or
Enabling the radio frequency power amplifier to be in a closed state through an enabling signal line, and controlling the first dual-channel radio frequency switch to be communicated with the input end of the radio frequency power amplifier through a GPIO control signal line.
12. The method of claim 9, further comprising:
according to the transmitting power output by the antenna, the first dual-path radio frequency switch and the second dual-path radio frequency switch are controlled by the GPIO control signal line, so that the radio frequency power amplifier bypasses or is in a path, and the enable state of the radio frequency power amplifier is controlled by the enable signal line.
13. The method of claim 12, wherein controlling the first dual rf switch and the second dual rf switch to bypass or pass the rf power amplifier via GPIO control signal lines and controlling the enabling state of the rf power amplifier via an enabling signal line according to the transmit power output from the antenna comprises:
when the transmitting power to be output by the antenna is greater than or equal to a set threshold value, enabling the radio frequency power amplifier to be in a working state through an enabling signal line, and controlling the first dual-path radio frequency switch and the second dual-path radio frequency switch to be communicated with the radio frequency power amplifier through a GPIO control signal line;
when the transmitting power to be output by the antenna is smaller than or equal to or smaller than a set threshold value, the radio frequency power amplifier is in a closed state through an enabling signal line, and the first dual-path radio frequency switch and the second dual-path radio frequency switch are controlled through a GPIO control signal line so that the output end of the band-pass filter is directly communicated with the input end of the antenna.
14. The method of claim 12, wherein when the antenna is in the non-transmitting mode, the rf power amplifier is turned off by an enable signal line, and the first dual rf switch and the second dual rf switch are controlled by GPIO control signal lines to connect the output of the band pass filter to the input of the rf power amplifier and to connect the output of the rf power amplifier to the input of the antenna; or
Enabling the radio frequency power amplifier to be in a closed state through an enabling signal line, and controlling the first dual-path radio frequency switch and the second dual-path radio frequency switch through a GPIO control signal line to enable the output end of the band-pass filter to be directly communicated with the input end of the antenna.
15. A terminal, characterized in that the terminal comprises the radio frequency power amplifier circuit of any one of claims 1 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310177796.3A CN104158505A (en) | 2013-05-14 | 2013-05-14 | Radio frequency power amplification circuit, control method and terminal |
| PCT/CN2013/082172 WO2013189424A2 (en) | 2013-05-14 | 2013-08-23 | Radio-frequency power amplification circuit, control method and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310177796.3A CN104158505A (en) | 2013-05-14 | 2013-05-14 | Radio frequency power amplification circuit, control method and terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104158505A true CN104158505A (en) | 2014-11-19 |
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ID=49769565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310177796.3A Pending CN104158505A (en) | 2013-05-14 | 2013-05-14 | Radio frequency power amplification circuit, control method and terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104158505A (en) |
| WO (1) | WO2013189424A2 (en) |
Cited By (3)
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| CN109195118A (en) * | 2018-10-19 | 2019-01-11 | 江苏未来智慧信息科技有限公司 | Band PA One-to-All Broadcast communication device and communication means based on bluetooth |
| CN114039619A (en) * | 2021-09-28 | 2022-02-11 | 三维通信股份有限公司 | Zero intermediate frequency radio frequency front end circuit, system, radio frequency unit protection method and medium |
| CN117014027A (en) * | 2020-08-18 | 2023-11-07 | 华为技术有限公司 | Power amplifier chip and communication device |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013189424A3 (en) | 2014-04-10 |
| WO2013189424A2 (en) | 2013-12-27 |
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Application publication date: 20141119 |