CN215498957U - Radio frequency device and electronic equipment - Google Patents
Radio frequency device and electronic equipment Download PDFInfo
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- CN215498957U CN215498957U CN202121190548.9U CN202121190548U CN215498957U CN 215498957 U CN215498957 U CN 215498957U CN 202121190548 U CN202121190548 U CN 202121190548U CN 215498957 U CN215498957 U CN 215498957U
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Abstract
The embodiment of the application discloses a radio frequency device and electronic equipment, and relates to the field of radio frequency communication. By outputting radio-frequency signals to the power amplification chip from different pins, one or more power amplifiers in the power amplifiers are selected for amplification, so that the radio-frequency signals are amplified by using different gains. The problem of power overload that only can use power amplifier's fixed gain to amplify the radio frequency signal and cause among the correlation technique is solved, this application does not need to carry out the dynamic adjustment that just can realize the gain to the inner structure of radio frequency amplification chip, consequently can the dynamic adjustment power amplifier's output power to and reduce hardware cost.
Description
Technical Field
The present invention relates to the field of radio frequency communications, and in particular, to a radio frequency device and an electronic apparatus.
Background
In the field of radio frequency communication, a power amplification chip is used for amplifying a radio frequency signal generated by a radio frequency module, and the power amplification chip comprises a plurality of cascaded power amplifiers. Referring to fig. 1, the power amplifier chip includes n cascaded power amplifiers, a signal output terminal of the rf module is connected to a radio frequency input terminal RFIN of the power amplifier chip, and a radio frequency output terminal RFOUT of the power amplifier chip is connected to an antenna. The gain G of the power amplifier chip is equal to the product of the gains of the n power amplifiers, and assuming that the power of the rf signal output by the rf module is P, the power of the rf signal output by the power amplifier chip is P × G. However, in practical applications, the maximum output power Pmax of the power amplifier chip is fixed, which requires that the input power of the power amplifier chip is less than or equal to Pmax/G; the power of the rf signal output by the rf module is dynamically changed, and when the power of the rf signal output by the rf module is greater than Pmax/G, the power amplifier chip will enter a saturation state, which results in a deterioration of the output performance.
In order to avoid the output power of the power amplifier exceeding the rated maximum output power, the following methods are generally adopted in the related art to solve the problem:
1. directly reducing the output power of the radio frequency module;
2. and an attenuation network is added between the radio frequency module and the power amplification chip, and the output power of the power amplification chip is reduced through the attenuation network.
The method 1 needs to be supported by a radio frequency module, and when the output power of the radio frequency module is reduced, the LO leakage of the radio frequency signal is fixed, which causes the LO leakage suppression degree of the output signal to be low, and when the output power is reduced more, the performance of the radio frequency signal is lost; the method 2 is to firstly use the attenuation network to perform attenuation and then perform amplification, at this time, the radio frequency module and the power amplification chip both bear full load current, the power consumption is larger, and extra hardware cost needs to be added.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a radio frequency device and electronic equipment, and can solve the problem of power saturation caused by the fact that the gain of a power amplification chip is fixed and unchanged in the related art. The technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a radio frequency device, including:
the radio frequency module and the power amplification chip are arranged on the base;
the radio frequency module is provided with n radio frequency output pins, and the power amplification chip is internally provided with n cascaded power amplifiers; the power amplification chip is provided with n power supply pins, signal input pins and signal output pins; the n power supply pins are connected with the power supply ends of the n power amplifiers in a one-to-one mode; the signal input pin is connected with the input end of the first power amplifier in the n power amplifiers, and the signal output pin is connected with the output end of the last power amplifier in the n power amplifiers; the n radio frequency output pins, the signal input pins and the power supply pins corresponding to the first n-1 power amplifiers are connected in a one-to-one mode; n is an integer greater than or equal to 2;
the radio frequency module monitors the power of an output radio frequency signal, selects one radio frequency output pin from the n radio frequency output pins according to the power, and sends the radio frequency signal to the power amplification chip through the selected radio frequency output pin; and the power amplification chip amplifies the radio-frequency signals by using one or more power amplifiers corresponding to the selected radio-frequency output pins, and outputs the amplified radio-frequency signals through the signal output pins.
A second aspect of the present application provides a radio frequency apparatus comprising:
the device comprises a radio frequency module, a multi-path selection switch, a controller and a power amplification chip;
the radio frequency module is provided with a radio frequency output pin, and the multi-way selection switch is provided with an input end, a control end and n output ends; the power amplification chip is internally provided with n cascaded power amplifiers and is provided with n power supply pins, signal input pins and signal output pins;
the n power supply pins are connected with the power supply ends of the n power amplifiers in a one-to-one mode; the signal input pin is connected with the input end of the first power amplifier in the n power amplifiers, and the signal output pin is connected with the output end of the last power amplifier in the n power amplifiers; the n output ends are connected with the signal input pins and the power supply pins corresponding to the first n-1 power amplifiers in a one-to-one mode;
the multi-path selection switch receives a control signal from the controller, selects one selection end from the n output ends according to the control signal and is conducted with the input end, the radio frequency module sends a radio frequency signal to the power amplification chip through the input end and the selected output end, the power amplification chip uses one or more power amplifiers corresponding to the selected output end to amplify the radio frequency signal, and the amplified radio frequency signal is output through the signal output pin.
The present application further provides an electronic device, including any one of the above radio frequency devices, where the electronic device may be a portable device or a fixed device, for example: cell-phone, panel computer, wireless router, WIFI network bridge or WIFI amplifier.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise:
by outputting radio-frequency signals to the power amplification chip from different pins, one or more power amplifiers in the power amplifiers are selected for amplification, so that the radio-frequency signals are amplified by using different gains. The problem of power overload that only can use power amplifier's fixed gain to amplify the radio frequency signal and cause among the correlation technique is solved, this application does not need to carry out the dynamic adjustment that just can realize the gain to the inner structure of radio frequency amplification chip, consequently can the dynamic adjustment power amplifier's output power to and reduce hardware cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a radio frequency device in the related art;
FIG. 2 is a block diagram of a radio frequency device provided by an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power amplifier provided in an embodiment of the present invention;
FIG. 4 is another block diagram of a radio frequency device provided by an embodiment of the present invention;
FIG. 5 is another block diagram of a radio frequency device provided by an embodiment of the present invention;
FIG. 6 is another block diagram of a radio frequency device provided by an embodiment of the present invention;
FIG. 7 is another block diagram of a radio frequency device provided by an embodiment of the present invention;
fig. 8 is another structural diagram of a radio frequency device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, a block diagram of a radio frequency device according to an embodiment of the present invention includes: the radio frequency module and the power amplification chip.
Wherein, the radio frequency module is used for transmitting and receiving radio frequency signal, for example: the radio frequency module is the WIFI module that supports the 802.11 agreement, and the WIFI module can transmit and receive the WIFI signal. The power amplification chip is used for amplifying the radio-frequency signal input by the radio-frequency module and radiating the amplified radio-frequency signal to a free space through the antenna.
The radio frequency module is provided with n radio frequency output pins, wherein n is an integer greater than or equal to 2. The power amplification chip is internally provided with n power amplifiers, and the n power amplifiers are respectively as follows: power amplifier 1, power amplifiers 2, …, power amplifier n-1, power amplifier n. The power amplification chip is provided with n power supply pins, a signal input pin and a signal output pin, wherein the n power supply pins are respectively a power supply pin VCC1, power supply pins VCC2 and …, a power supply pin VCCn-1 and a power supply pin VCCn. Each power amplifier is provided with an input end, an output end and a power supply end, wherein the power supply end is used for inputting working voltage, n power supply pins and the power supply ends of the n power amplifiers are connected in a one-to-one mode, namely the power supply pin VCC1 is connected with the power supply end of the power amplifier 1, the power supply pin VCC2 is connected with the power supply end of the power amplifier 2, …, the power supply pin VCCn-1 is connected with the power amplifier n-1, and the power supply pin n is connected with the power amplifier n. The external voltage source supplies power to each power amplifier through n power supply pins, that is, the present application may supply power to one or more power amplifiers of the n power amplifiers individually, and the rest power amplifiers do not supply power, for example: the power amplifiers 2 to n supply power, and the power amplifier 1 does not supply power.
The n radio frequency output pins of the radio frequency module are used for outputting radio frequency signals, and the radio frequency module can only output the radio frequency signals through one radio frequency output pin at a time. The n radio frequency output pins are connected with the signal input pin of the power amplification chip and the power supply pins corresponding to the first n-1 power amplifiers in a one-to-one mode. The data of the signal input pin of the power amplification chip and the first n-1 power supply pins is n, and the connection relationship shown in fig. 1 is: the 1 st radio frequency output pin of the radio frequency module is connected with a signal input pin RFIN, the 2 nd radio frequency output pin is connected with a power supply pin VCC1, the 3 rd radio frequency output pin is connected with a power supply pin VCC2, …, and the nth radio frequency output pin is connected with a power supply pin VCCn-1.
The working principle of the radio frequency device is as follows: the gains of the n power amplifiers are respectively G1, G2, … and Gn. When the radio frequency module inputs radio frequency signals to the power amplification chip through the 1 st radio frequency output pin and the signal input pin RFIN, the rest radio frequency output pins of the radio frequency module do not output the radio frequency signals. All n power amplifiers in the power chip work normally, power supply pins corresponding to the n power amplifiers supply power normally, and the gain of the power amplification chip is G1G 2G 3G … Gn; when the radio frequency module inputs radio frequency signals to the power amplification chip through the 2 nd radio frequency output pin and the power supply pin VCC1, the power amplifier 1 in the power amplification chip is bypassed, the power amplifier 1 does not supply power, the radio frequency signals are directly input from the 2 nd power amplifier, and the gain of the power amplification chip is G2G 3G … Gn at the moment. And analogizing in sequence, when the radio frequency module passes through the nth radio frequency output pin and the power supply pin VCCn-1, the power amplifier 1 to the power amplifier n-1 in the power amplification chip are bypassed, the power amplifier 1 to the power amplifier n-1 do not supply power, a radio frequency signal is directly input from the nth power amplifier, and the gain of the power amplification chip is Gn at the moment.
Referring to fig. 3, the bypass principle of the power amplifier of the present application is illustrated, where fig. 3 shows that two power amplifiers are connected in a cascade manner, and the two power amplifiers are isolated from each other by a capacitor C1. When a radio frequency signal is input from a signal input pin RFIN, the two power amplifiers are both normally powered, and the gain of the power amplification chip is the product of the two power amplifiers; when a radio frequency signal is input from the power supply pin VCC1, the radio frequency signal is not input from the signal input pin RFIN, the 1 st power amplifier is bypassed, that is, the 1 st power amplifier is not powered, and the radio frequency signal is input to the input terminal of the 2 nd power amplifier (the base of the transistor Q2) through the resistor R3 and the capacitor C1, where the gain of the power amplifier chip is the gain of the 2 nd power amplifier.
In summary, the radio frequency module of the present application is provided with n radio frequency output pins, when the radio frequency module selects the 1 st radio frequency output pin to output a radio frequency signal, the gain of the power amplification chip is G1 × G2 × … × Gn, when the radio frequency module selects the 2 nd radio frequency output pin to output a radio frequency signal, the gain of the power amplification chip is G2 × … × Gn, and so on, when the radio frequency module selects the nth radio frequency output pin to output a radio frequency signal, the gain of the power amplification chip is Gn; that is, the radio frequency device of the present application may amplify the radio frequency signal using any one of the n gains as needed. For example: when the radio frequency module outputs a radio frequency signal, the radio frequency module can monitor the output power P of the radio frequency signal in real time, calculate the ratio between the rated maximum output power Pmax and the output power P to obtain the maximum gain Gmax which is Pmax/P, and obtain the n gains: G1G 2G … Gn, G2G … Gn, … Gn-1 Gn and Gn, determining the gain which is closest to Gmax and is less than or equal to Gmax, determining the serial number of the radio frequency output pin according to the gain, and then outputting the radio frequency signal on the radio frequency output pin corresponding to the serial number by the radio frequency module, so that the output power clock of the power amplification chip can be controlled not to be greater than the maximum output power Pmax.
For example, referring to the schematic structure of the radio frequency device shown in fig. 4, n is 2, and the model of the power amplification chip is YP 2233W. The power amplification chip is internally provided with two cascaded power amplifiers, and the radio frequency module is provided with two radio frequency output pins: the radio frequency amplifier comprises a radio frequency output pin 1 and a radio frequency output pin 2, wherein the radio frequency output pin 1 is connected with a signal input pin RFIN of a radio frequency amplification chip, and the radio frequency output pin 2 is connected with a power supply pin VCC1 of the power amplification chip. When the radio frequency module selects to input radio frequency signals from the signal input pin RFIN, two power amplifiers of the power amplifiers work normally, and the two power amplifiers amplify the radio frequency signals and then output the radio frequency signals from the signal output pin RFOUT; when the radio frequency module selects to input a radio frequency signal from the power supply pin VCC1, the 1 st power amplifier in the radio frequency amplification chip is bypassed, and the 2 nd power amplifier amplifies the input radio frequency signal and outputs the amplified signal from the signal output pin RFOUT.
For another example, referring to the schematic structural diagram of the radio frequency device shown in fig. 5, n is 3, and the model of the power amplification chip is YP 3236W. The power amplification chip is internally provided with three cascaded power amplifiers, and the radio frequency module is provided with three radio frequency output pins: the radio frequency output pin 1, the radio frequency output pin 2 and the radio frequency output pin 3, the radio frequency output pin 1 is connected with a signal input pin RFIN of the power amplification chip, the radio frequency output pin 2 is connected with a power supply pin VCC1, and the radio frequency output pin 3 is connected with a power supply pin VCC 2. When a radio frequency module inputs radio frequency signals from a signal input pin RFIN, three power amplifiers in the power amplification chip work normally, and after the three power amplifiers amplify the radio frequency signals in sequence, the amplified radio frequency signals are output from a signal output pin RFOUT; when a radio frequency module inputs a radio frequency signal from a power supply pin VCC1, a 1 st power amplifier is bypassed, a 2 nd power amplifier and a 3 rd power amplifier sequentially amplify the radio frequency signal, and then the amplified radio frequency signal is output through a signal output pin RFOUT; when a radio frequency module inputs a radio frequency signal from a power supply pin VCC2, a 1 st power amplifier and a 2 nd power amplifier are bypassed, a 3 rd power amplifier amplifies the input radio frequency signal, and then outputs the amplified radio frequency signal through a signal output pin RFOUT.
According to the embodiment of the application, n radio frequency output pins of the radio frequency module, signal input pins of the power amplification chip and the first n-1 power supply pins are connected in a one-to-one mode, the radio frequency module can select any one of the n radio frequency output pins to output a radio frequency signal, and one or more power amplifiers in the power amplifier are selected to amplify the radio frequency signal by outputting the radio frequency signal to the power amplification chip from different radio frequency output pins, so that the radio frequency signal is amplified by using different gains. The problem of power overload that only can use power amplifier's fixed gain to amplify the radio frequency signal and cause among the correlation technique is solved, this application does not need to carry out the dynamic adjustment that just can realize the gain to the inner structure of radio frequency amplification chip, consequently can the dynamic adjustment power amplifier's output power to and reduce hardware cost.
Referring to fig. 6, a schematic structural diagram of a radio frequency device provided in an embodiment of the present application is shown, where the radio frequency device includes: the radio frequency module, the multi-channel selection switch and the controller.
The multi-path selection switch is a single-pole multi-throw switch, the multi-path selection switch is provided with an input end, n output ends and a control end, the control end receives a switching signal and conducts one of the input end and the n output ends according to the switching signal, and n is an integer greater than or equal to 2. The radio frequency module is provided with a radio frequency output pin. The power amplification chip is internally provided with n cascaded power amplifiers, each power amplifier is provided with a power supply end for providing working voltage, the power amplification chip is provided with n power supply pins, a signal input pin and a signal output pin, the power supply ends of the n power amplifiers and the n power supply pins are connected in a one-to-one mode, the input end of the first power amplifier in the n power amplifiers is connected with the signal input pin RFIN, and the output end of the last power amplifier in the n power amplifiers is connected with the signal output pin RFOUT. The n output ends of the multi-way selection switch are connected with the signal input pin RFIN and the first n-1 power supply pins VCC 1-VCCn-1 in a one-to-one mode. The controller is connected with the control end of the multi-way selection switch.
The controller may be a processor, the processor may include one or more Processing cores, and the processor 501 may be implemented in at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The controller of the application can be independently arranged and can also be arranged in the radio frequency module to increase the integration level of the system.
The working principle of the radio frequency device of the application comprises the following steps: the controller sends a selection signal to the multi-path selection switch, the selection signal can be a binary signal, the multi-path selection switch is indicated to select an output end in a bitmap mode, the bit of the selection signal is n, each bit corresponds to one output end, the multi-path selection switch analyzes the values of the n bits, and the selected output end is determined according to the value of the bit. For example: when the value on a bit is equal to 1, it indicates that the output terminal corresponding to the bit is selected, and it is easy to understand that only 1 bit of n bits has a value of 1, and the remaining bits have a value of 0.
The multi-path selection switch conducts the input end and the output end according to the indication of the selection signal, a path selected by the multi-path selection switch of the radio frequency module inputs a radio frequency signal to the power amplification chip, the power amplification chip amplifies the radio frequency signal, and then the amplified radio frequency signal is output through the signal input pin. Assuming that the gains of n power amplifiers in the power amplifier chip are respectively G1, G2, … and Gn, when the multi-way selection switch selects different output ends to be conducted, the power amplifier chip corresponds to different gains. When the multi-way selection switch selects the output end 1 to be conducted, a radio frequency signal is input to the power amplification chip from the signal input end RFIN, all power amplifiers in the power amplification chip normally work, and the gain of the power amplification chip is G1G 2, … Gn; when the multi-way selection switch selects the output end 2 to be conducted, a radio frequency signal is input to the power amplification chip from the power supply pin VCC1, a first power amplifier in the power amplification chip is bypassed, the gains of the power amplification chip are G2 × … × Gn, and the structure of the power amplifier and the principle of the bypass can be referred to as shown in fig. 2, which is not described herein again; by analogy, when the multi-path selection switch selects the output end n to be conducted, the radio-frequency signal is input into the power amplification chip from the power supply pin VCCn-1, at the moment, the front n-1 power amplifiers in the power amplification chip are bypassed, and the gain of the power amplification chip is Gn.
When the radio frequency module outputs a radio frequency signal, the controller can monitor the output power P of the radio frequency signal in real time, calculate the ratio between the rated maximum output power Pmax and the output power P to obtain the maximum gain Gmax, and obtain the gain from the n gains: G1G 2G … Gn, G2G … Gn, … Gn-1 Gn and Gn determine the gain which is closest to Gmax and is less than or equal to Gmax, determine the serial number of the radio frequency output pin according to the determined gain, and then the controller controls the multi-way selection switch to be conducted at the radio frequency end corresponding to the serial number, so that the radio frequency module inputs radio frequency signals to the power amplification chip through the output end.
For example, referring to the schematic structural diagram of the radio frequency device shown in fig. 7, n is 2, and the model of the power amplification chip is YP 2233W. The controller links to each other with multiplexer's control end, and power amplifier chip embeds has two cascaded power amplifier, and multiplexer is provided with two input: the output end 1 is connected with the signal input pin RFIN of the radio frequency amplification chip, and the output end 2 is connected with the power supply pin VCC1 of the power amplification chip. The radio frequency output end of the radio frequency module is connected with the input end of the multi-way selection switch, the output end 1 of the multi-way selection switch is connected with the signal input pin RFIN, and the output end 2 of the multi-way selection switch is connected with the power supply pin VCC 2. When the controller instructs the multi-way selection switch to select the radio-frequency signal input from the signal input pin RFIN, two power amplifiers of the power amplifier work normally, and the two power amplifiers amplify the radio-frequency signal and output the radio-frequency signal from the signal output pin RFOUT; when the controller instructs the multi-way selection switch to input a radio frequency signal from the power supply pin VCC1, the 1 st power amplifier in the radio frequency amplification chip is bypassed, and the 2 nd power amplifier amplifies the input radio frequency signal and outputs the amplified signal from the signal output pin RFOUT.
For another example, referring to the schematic structural diagram of the radio frequency device shown in fig. 8, n is 3, and the model of the power amplification chip is YP 3236W. Three cascaded power amplifiers are arranged in the power control amplification chip. The multi-path selection switch is provided with an input end, a control end and n output ends, wherein the n output ends are respectively an output end 1, an output end 2 and an output end 3. The radio frequency output end of the radio frequency module is connected with the input end of the multi-way selection switch, the controller is connected with the control end of the multi-way selection switch, the output end 11 is connected with the signal input pin RFIN of the power amplification chip, the output end 2 is connected with the power supply pin VCC1, and the output end 3 is connected with the power supply pin VCC 2. When the controller instructs the multi-way selection switch to input radio frequency signals from the signal input pin RFIN, three power amplifiers in the power amplification chip work normally, and after the three power amplifiers amplify the radio frequency signals in sequence, the amplified radio frequency signals are output from the signal output pin RFOUT; when the controller instructs the multi-way selection switch to input a radio-frequency signal from the power supply pin VCC1, the 1 st power amplifier is bypassed, the 2 nd power amplifier and the 3 rd power amplifier sequentially amplify the radio-frequency signal, and then the amplified radio-frequency signal is output through the signal output pin RFOUT; when the controller instructs the multi-way selection switch to input a radio frequency signal from the power supply pin VCC2, the 1 st power amplifier and the 2 nd power amplifier are bypassed, the 3 rd power amplifier amplifies the input radio frequency signal, and then outputs the amplified radio frequency signal through the signal output pin RFOUT.
According to the embodiment of the application, the input ends of the radio frequency output pins and the multi-way selection switch of the radio frequency module are connected, the controller is connected with the control end of the multi-way selection switch, the n output ends of the multi-way selection switch are connected with the signal input pin of the power amplification chip and the first n-1 power supply pins in a one-to-one mode, the multi-way selection switch can select any one of the n output ends to output radio frequency signals according to the indication of the controller, the radio frequency signals are output to the power amplification chip from different output ends, one or more power amplifiers in the power amplifier can be selected to perform amplification processing, and therefore the radio frequency signals are amplified by using different gains. The problem of power overload that only can use power amplifier's fixed gain to amplify the radio frequency signal and cause among the correlation technique is solved, this application does not need to carry out the dynamic adjustment that just can realize the gain to the inner structure of radio frequency amplification chip, consequently can the dynamic adjustment power amplifier's output power to and reduce hardware cost.
An embodiment of the present application provides an electronic device, which may further include, in addition to the radio frequency device described above: an antenna, a housing for accommodating a radio frequency device, a display screen, an input device (such as a keyboard, a mouse or a touch screen), and the like.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (5)
1. A radio frequency device, characterized by: the method comprises the following steps:
the radio frequency module and the power amplification chip are arranged on the base;
the radio frequency module is provided with n radio frequency output pins, and the power amplification chip is internally provided with n cascaded power amplifiers; the power amplification chip is provided with n power supply pins, signal input pins and signal output pins; the n power supply pins are connected with the power supply ends of the n power amplifiers in a one-to-one mode; the signal input pin is connected with the input end of the first power amplifier in the n power amplifiers, and the signal output pin is connected with the output end of the last power amplifier in the n power amplifiers; the n radio frequency output pins, the signal input pins and the power supply pins corresponding to the first n-1 power amplifiers are connected in a one-to-one mode; n is an integer greater than or equal to 2;
the radio frequency module monitors the power of an output radio frequency signal, selects one radio frequency output pin from the n radio frequency output pins according to the power, and sends the radio frequency signal to the power amplification chip through the selected radio frequency output pin; and the power amplification chip amplifies the radio-frequency signals by using one or more power amplifiers corresponding to the selected radio-frequency output pins, and outputs the amplified radio-frequency signals through the signal output pins.
2. A radio frequency device, comprising:
the device comprises a radio frequency module, a multi-path selection switch, a controller and a power amplification chip;
the radio frequency module is provided with a radio frequency output pin, and the multi-way selection switch is provided with an input end, a control end and n output ends; the power amplification chip is internally provided with n cascaded power amplifiers and is provided with n power supply pins, signal input pins and signal output pins;
the n power supply pins are connected with the power supply ends of the n power amplifiers in a one-to-one mode; the signal input pin is connected with the input end of the first power amplifier in the n power amplifiers, and the signal output pin is connected with the output end of the last power amplifier in the n power amplifiers; the n output ends are connected with the signal input pins and the power supply pins corresponding to the first n-1 power amplifiers in a one-to-one mode;
the multi-path selection switch receives a control signal from the controller, selects one selection end from the n output ends according to the control signal and is conducted with the input end, the radio frequency module sends a radio frequency signal to the power amplification chip through the input end and the selected output end, the power amplification chip uses one or more power amplifiers corresponding to the selected output end to amplify the radio frequency signal, and the amplified radio frequency signal is output through the signal output pin.
3. The radio frequency device according to claim 2, wherein the controller is disposed inside the radio frequency module.
4. The radio frequency device according to claim 1, 2 or 3, wherein the power amplifiers include common emitter amplification circuits, and adjacent two power amplifiers are isolated from each other by a capacitor.
5. An electronic device, characterized in that it comprises a radio-frequency unit according to any one of claims 1 to 4.
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| CN202121190548.9U CN215498957U (en) | 2021-05-31 | 2021-05-31 | Radio frequency device and electronic equipment |
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| CN202121190548.9U CN215498957U (en) | 2021-05-31 | 2021-05-31 | Radio frequency device and electronic equipment |
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