CN116667870A - A low-power Wi-Fi radio frequency front-end module, chip and electronic equipment - Google Patents

Abstract

The invention discloses a low-power Wi-Fi radio frequency front end module, a chip and electronic equipment. The Wi-Fi radio frequency front end module comprises at least one transmitting path, at least one receiving path, at least one power switch, a transceiver radio frequency switch and a control unit; the power switch switches the power supply of the Wi-Fi radio frequency front end module according to the control signal provided by the control unit. According to the invention, under the conditions of not increasing the system cost and meeting the switching time of the Wi-Fi system, the Wi-Fi radio frequency front end module is powered by the corresponding lower voltage under the condition of lower power output, so that the system efficiency is greatly improved, and meanwhile, the junction temperature of the device, the high-speed DEVM performance and the like are optimized.

Description

A low-power Wi-Fi radio frequency front-end module, chip and electronic equipment

technical field

The invention relates to a low-power Wi-Fi radio frequency front-end module, and also relates to an integrated circuit chip including the low-power Wi-Fi radio frequency front-end module and corresponding electronic equipment, belonging to the technical field of radio frequency integrated circuits.

Background technique

With the continuous development of WLAN technology, Wi-Fi has become the main way for users such as families and enterprises to access the Internet. In recent years, some new applications that have appeared on the Internet, such as 4K and 8K video, VR (virtual reality)/AR (augmented reality), games, remote office, online video conferencing, and cloud computing, have a great impact on Wi-Fi throughput and The requirements for latency are getting higher and higher. Therefore, the latest Wi-Fi 6 released by the IEEE 802.11 standard organization and the upcoming Wi-Fi 7 will continue to improve and improve Wi-Fi throughput and reduce latency.

At the same time, in order to support the high-rate DEVM (Dynamic Error Vector Magnitude) of 4096-QAM (modulation mode), the requirements for power consumption and heat dissipation of RF terminal devices are also higher, and the lower the device junction temperature, the lower the DEVM of the RF front-end module. will be better. However, in the scenario where MIMO (Multiple Input Multiple Output) technology and multi-band RF front-end modules work simultaneously, the power consumption of the RF terminal will increase significantly, causing heat dissipation problems.

Different from using APT (Average Power Tracking) or ET (Envelope Tracking) mode on mobile phone RF systems to improve efficiency, in the prior art, the power supply voltage of both the Wi-Fi router and the mobile phone Wi-Fi RF front-end module is The fixed voltage makes the RF front-end module inefficient at low power. The main reason is that the switching time of the PMIC (power management chip) of APT/ET cannot meet the requirements of the Wi-Fi system, and the system cost and other factors.

Therefore, how to make the RF front-end module realize low-voltage power supply at low power, improve system efficiency, optimize device junction temperature and high-speed DEVM performance without increasing the system cost and at the same time meet the switching time of the Wi-Fi system has always been an issue in this field. A very important technical research topic.

In the Chinese invention patent with the patent number ZL 202210203460.9, a radio frequency front-end module and corresponding radio frequency front-end system, chip and electronic equipment are disclosed. The RF front-end module includes at least one driver amplifier and at least one power amplifier; the output of the driver amplifier is connected to the input of the power amplifier; the RF front-end module is powered by a power supply when working; when the preset power switching conditions are met, at least one The driving amplifier and/or the power amplifier are jointly powered by the power supply and the battery power. The radio frequency front-end module can eliminate the limitation of the overall maximum output power caused by the insufficient working current of the power management chip under the working state of low voltage and high power, and meet the application requirements of electronic equipment for the APT mode.

Contents of the invention

The primary technical problem to be solved by the present invention is to provide a low power consumption Wi-Fi radio frequency front-end module.

Another technical problem to be solved by the present invention is to provide an integrated circuit chip including the Wi-Fi radio frequency front-end module and corresponding electronic equipment.

In order to achieve the above object, the present invention adopts the following technical solutions:

According to the first aspect of the embodiments of the present invention, a low-power Wi-Fi radio frequency front-end module is provided, including at least one transmission path, at least one reception path, and at least one power switch, as well as a transceiver radio frequency switch and a control unit; wherein,

One end of the transmitting path is connected to the transmitting signal input end, one end of the receiving path is connected to the receiving signal output end, and the other end of the transmitting path and the receiving path are respectively connected to two terminals on one side of the transceiver radio frequency switch. The terminals are correspondingly connected, and the other end of the transceiver radio frequency switch is connected to the antenna end;

The control unit is used to provide control signals for the transceiver radio frequency switch and the power switch, and provide a bias voltage for the Wi-Fi radio frequency front-end module;

The power switch is used to switch the power supply of the Wi-Fi radio frequency front-end module according to the control signal, and its at least two input terminals are respectively connected to at least two power supply terminals with different voltages;

When the Wi-Fi radio frequency front-end module is in the state of different power output from high to low, the power switch is respectively connected to the power supply of different voltage from high to low to supply power for the Wi-Fi radio frequency front-end module , to reduce the power consumption of the Wi-Fi radio frequency front-end module.

Wherein preferably, the transmission path includes at least a power amplifier, a first input matching circuit and a first output matching circuit; wherein,

The transmit signal input terminal is connected to the input terminal of the first input matching circuit, the output terminal of the first input matching circuit is connected to the input terminal of the power amplifier, and the output terminal of the power amplifier is connected to the first input matching circuit. An input terminal of an output matching circuit is connected, and an output terminal of the first output matching circuit is connected with the first connection terminal of the transceiver radio frequency switch.

Wherein preferably, the receiving path includes at least a low-noise amplifier, a second input matching circuit, and a second output matching circuit; wherein,

The second terminal of the transceiver radio frequency switch is connected to the input terminal of the second input matching circuit, the output terminal of the second input matching circuit is connected to the input terminal of the low noise amplifier, and the input terminal of the low noise amplifier The output end is connected to the input end of the second output matching circuit, and the output end of the second output matching circuit is connected to the received signal output end.

Preferably, the control terminal of the power switch is connected to the control unit, and its input terminals are respectively connected to the power supply battery and multiple DC-DC converters or output terminals of multiple DC-DC converters, wherein, The power supply of multiple DC-DC converters is provided by the power supply battery, and the output voltages of multiple DC-DC converters are different;

The output terminals of the power switch are at least respectively connected to the power amplifiers in the transmission path, the low noise amplifiers in the reception path, and the power terminals of the transceiver radio frequency switch.

Wherein preferably, when the Wi-Fi radio frequency front-end module is in the state of different power output from high to low, the control unit sends a control signal according to the preset power value, and controls the power switch to be turned on correspondingly from high to low. Power supplies of different voltages supply power to the Wi-Fi radio frequency front-end module.

Preferably, the transmission path also includes a VDET detection circuit, which is used to detect the output power of the power amplifier in real time, and convert it into a voltage that is positively correlated with the output power and provide it to the power switch; the VDET detection circuit The input end of the VDET detection circuit is connected to the output end of the power amplifier, and the output end of the VDET detection circuit is connected to the power switch;

After the power switch compares the output voltage of the VDET detection circuit with a preset value, it selects to connect a corresponding power supply to supply power to the Wi-Fi radio frequency front-end module.

Preferably, the output terminal of the VDET detection circuit is connected to the control unit, and the control unit sends a control signal after comparing the output voltage of the VDET detection circuit with a preset value to control the power switch to connect The corresponding power supply is used to supply power to the Wi-Fi radio frequency front-end module.

Preferably, in the Wi-Fi radio frequency front-end module, the power switch is independently integrated into a power switch chip, or integrated with the DC-DC converter into a power chip.

According to the second aspect of the embodiments of the present invention, there is provided an integrated circuit chip, which includes the above-mentioned low-power Wi-Fi radio frequency front-end module.

According to a third aspect of the embodiments of the present invention, there is provided an electronic device, which includes the above-mentioned low-power Wi-Fi radio frequency front-end module.

Compared with the prior art, the low-power Wi-Fi radio frequency front-end module provided by the present invention adopts the technical solution of switching different power supply voltages by a power switch, without increasing system cost and meeting the Wi-Fi system switching time. , which realizes that the Wi-Fi RF front-end module is powered by a corresponding lower voltage when the power output is lower, thereby greatly improving system efficiency, and at the same time, optimizing device junction temperature and high-speed DEVM performance. Therefore, the low-power Wi-Fi radio frequency front-end module provided by the present invention has beneficial effects such as ingenious and reasonable structural design, low cost, high efficiency, and excellent circuit performance.

Description of drawings

FIG. 1(a) is a schematic diagram of a power supply scheme of a Wi-Fi radio frequency front-end module in the prior art;

Fig. 1 (b) is a kind of structure diagram of Wi-Fi radio frequency front-end module in the prior art;

FIG. 2(a) is a schematic diagram of another power supply scheme for a Wi-Fi radio frequency front-end module in the prior art;

Fig. 2 (b) is another schematic structural diagram of the Wi-Fi radio frequency front-end module in the prior art;

Fig. 3 (a) is in the first embodiment of the present invention, the circuit principle diagram of low power consumption Wi-Fi radio frequency front-end module;

FIG. 3(b) is a schematic structural diagram of multiple Wi-Fi radio frequency front-end modules in the first embodiment of the present invention;

Fig. 4 (a) is in the second embodiment of the present invention, the circuit principle diagram of low power consumption Wi-Fi radio frequency front-end module;

FIG. 4(b) is a schematic structural diagram of multiple Wi-Fi radio frequency front-end modules in the second embodiment of the present invention;

Fig. 5(a) is the implementation scheme 1 of the power switch VCC_SW in the low-power Wi-Fi radio frequency front-end module in the third embodiment of the present invention;

Fig. 5(b) is the second implementation scheme of the power switch VCC_SW in the low-power Wi-Fi radio frequency front-end module in the third embodiment of the present invention;

6 is a schematic circuit diagram of a low-power Wi-Fi radio frequency front-end module in a fourth embodiment of the present invention;

Fig. 7 (a) is in the fifth embodiment of the present invention, the circuit principle diagram of low power consumption Wi-Fi radio frequency front-end module;

FIG. 7(b) is a schematic structural diagram of multiple Wi-Fi radio frequency front-end modules in the fifth embodiment of the present invention;

Fig. 8 is a schematic diagram of an electronic device using the low-power Wi-Fi radio frequency front-end module provided by the present invention.

Detailed ways

The technical content of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

In order to facilitate understanding and description, the application of the present invention first briefly introduces the Wi-Fi radio frequency front-end module and power supply mode in the prior art, and on this basis, describes the specific technical solutions of the embodiments of the present invention in detail.

As shown in FIG. 1( a ), it is a power supply scheme for a Wi-Fi radio frequency front-end module in the prior art. Among them, the multiple radio frequency front-end modules are directly powered by the terminal power supply battery Vbatt, and there are multiple DC-DC converter chips in the terminal system to supply power to other modules in the system. The specific application of the Wi-Fi RF front-end module of this power supply scheme is shown in Figure 1(b). The Wi-Fi RF front-end module includes a power amplifier PA, an input matching circuit IMN1, an output matching circuit OMN1, and a low-noise amplifier LNA. The matching circuit IMN2, the output matching circuit OMN2, the transceiver RF switch TR_SW and the control unit Controller. Wherein, the control unit Controller provides logic control for the transceiver RF switch TR_SW, and provides bias voltage for the power amplifier PA and the low noise amplifier LNA. In the Wi-Fi RF front-end module of this power supply scheme, the power supply of each functional unit is provided by Vbatt, and there are multiple DC-DC converter chips in the terminal system to supply power to other modules in the system.

As shown in FIG. 2( a ), it is another power supply scheme for the Wi-Fi radio frequency front-end module in the prior art. Among them, the terminal power supply battery Vbatt supplies power to the converter chip DC-DC1, and the fixed voltage output by the converter chip DC-DC1 provides power supply voltage for multiple RF front-end modules, and there are multiple converter chips DC-DC2 in the terminal system , to supply power to other modules in the system. The specific application of the Wi-Fi RF front-end module of this power supply scheme is shown in Figure 2(b). The internal structure of the Wi-Fi RF front-end module is the same as that shown in Figure 1(b) above. In the Wi-Fi RF front-end module of this power supply scheme, the power supply of each functional unit is provided by the converter chip DC-DC1, and the power supply of the converter chip DC-DC 1 is provided by the terminal power supply battery Vbatt, and there are multiple The converter chip DC-DC2 supplies power to other modules in the system.

Usually, the voltage of the Wi-Fi RF front-end module on the mobile phone side is powered by Vbatt, the voltage of Vbatt is about 3.85V or 3.3V, and the voltage of the DC-DC converter chip is 1.8V; The chip DC-DC1 supplies power, the general voltage is 5V, and the voltage of other DC-DC chips is 1.8V or 3.3V.

From the power supply schemes of the above two Wi-Fi RF front-end modules, it can be seen that no matter whether the power amplifier PA in the RF front-end module is in the state of high-power output or medium-low power output, its power supply voltage is constant. Therefore, When in the state of small and medium power output, the efficiency of the RF front-end module is very low. Moreover, when the RF front-end module in MIMO operation is generally in the low-to-medium power output state, the efficiency of the RF front-end module will be very low. At the same time, the junction temperature of the device in the RF front-end module is high, and the high-speed DEVM will be poor. . Therefore, in the MIMO state, in the high rate mode and in the low power mode, improving the efficiency of the radio frequency front-end module is a difficult problem existing in the Wi-Fi system in the prior art.

In order to solve the above-mentioned problems existing in the prior art, the application of the present invention realizes low power output while the RF front-end module is at low power output by adopting corresponding technical solutions without increasing the system cost and satisfying the switching time of the Wi-Fi system. Voltage power supply, thereby greatly improving system efficiency, optimizing device junction temperature and high-speed DEVM performance, etc.

A low-power Wi-Fi radio frequency front-end module provided by the present invention includes at least one transmission path, at least one reception path, and at least one power switch, as well as a transceiver radio frequency switch and a control unit; wherein, one end of the transmission path is connected to the transmission signal input One end of the receiving path is connected to the receiving signal output end, the other end of the transmitting path and the receiving path are respectively connected to the two terminals on one side of the transceiver radio frequency switch, and the other end of the transceiver radio frequency switch is connected to the antenna end.

The power switch is used to switch the power supply of the Wi-Fi radio frequency front-end module according to the control signal, and its at least two input terminals are respectively connected to at least two power supply terminals with different voltages.

The control unit is used to provide logic control signals for the transceiver RF switch and the power switch, and to provide bias voltage for the Wi-Fi RF front-end module.

When the Wi-Fi radio frequency front-end module is in the state of high, medium and low power output respectively, the power switch is respectively connected to the power supply of different voltages such as high, medium and low to supply power for the Wi-Fi radio frequency front-end module, realizing Reduce the power consumption of the Wi-Fi RF front-end module.

In the first embodiment of the present invention, as shown in Figure 3(a), a low-power Wi-Fi radio frequency front-end module includes a transmission path and a reception path, as well as a transceiver radio frequency switch TR_SW, a power switch VCC_SW and a control unit Controller. Wherein, the transmitting path includes a power amplifier PA, a first input matching circuit IMN1 and a first output matching circuit OMN1; the receiving path includes a low noise amplifier LNA, a second input matching circuit IMN2, and a second output matching circuit OMN2.

In the Wi-Fi radio frequency front-end module, the input terminal of the first input matching circuit IMN1 is connected to the transmission signal input terminal TX_IN, the output terminal of the first input matching circuit IMN1 is connected to the input terminal of the power amplifier PA, and the output terminal of the power amplifier PA terminal is connected to the input terminal of the first output matching circuit OMN1, and the output terminal of the first output matching circuit OMN1 is connected to the first terminal of the transceiver RF switch TR_SW; the output terminal of the second output matching circuit OMN2 is connected to the receiving signal output terminal RX_OUT , the input end of the second output matching circuit OMN2 is connected to the output end of the low noise amplifier LNA, the input end of the low noise amplifier LNA is connected to the output end of the second input matching circuit IMN2, the input end of the second input matching circuit IMN2 is connected to the transceiver The second terminal of the RF switch TR_SW is connected; the third terminal of the transceiver RF switch TR_SW is connected to the antenna terminal ANT.

The first terminal of the power switch VCC_SW is connected to the output terminal of the power supply battery Vbatt, the second terminal is connected to the VCC power supply terminal, and the third terminal is respectively connected to the power supply terminals of the power amplifier PA, the low noise amplifier LNA and the transceiver RF switch TR_SW . Wherein, the VCC power is provided by the output voltage of the DC-DC converter, and the power of the DC-DC converter is provided by the power supply battery Vbatt.

The power supply end of the control unit Controller is connected to the output end of the power supply battery Vbatt, the first output end and the second output end of the control unit Controller are respectively connected to the control ends of the transceiver radio frequency switch TR_SW and the power switch VCC_SW, and the third output end is connected to the second output end of the power switch VCC_SW. The four output terminals are respectively connected to the bias voltage terminals of the power amplifier PA and the low noise amplifier LNA.

The control unit Controller is used to provide the bias voltage for the power amplifier PA and the low noise amplifier LNA, and provide logic control signals for the transceiver RF switch TR_SW and the power switch VCC_SW. The control unit controller is provided with control logic by the CPU (central processing unit) in the system .

The power switch VCC_SW adopts a single-pole double-throw switch (SPDT), which is used to switch the power supply of the power amplifier PA, the low-noise amplifier LNA, and the transceiver RF switch TR_SW, and the switching time of the power switch VCC_SW is generally 100nS~500nS, which meets the requirements of Wi -Fi system switching time requirements.

In the Wi-Fi radio frequency front-end module, there are two power supplies of the power supply battery Vbatt and the output VCC of the DC-DC converter. The DC-DC converter is usually an original module unit in the system, and the voltage of Vbatt is higher than the voltage of VCC.

When the Wi-Fi radio frequency front-end module is in the state of high power output, the power switch VCC_SW connects the power supply battery Vbatt to provide a higher power supply voltage for the power amplifier PA, low noise amplifier LNA and transceiver radio frequency switch TR_SW; when the Wi-Fi radio frequency When the front-end module is in the state of medium and low power output, the power switch VCC_SW is connected to the VCC power supply to provide a lower power supply voltage for the power amplifier PA, the low noise amplifier LNA and the transceiver RF switch TR_SW. Therefore, the efficiency of the Wi-Fi radio frequency front-end module is improved.

In the first embodiment of the present invention, multiple Wi-Fi radio frequency front-end modules are shown in FIG. 3( b ). Among them, the power supply of each Wi-Fi RF front-end module is provided by two power sources of the power supply battery Vbatt and the output VCC of the DC-DC converter, and the Wi-Fi RF front-end module includes a single-pole double-throw power switch VCC_SW. When the Wi-Fi RF front-end module is in the low-to-medium output power state or in the MIMO state, the RF front-end module is powered by the VCC power output from the DC-DC converter; when the Wi-Fi RF front-end module is in the high-power output state, The RF front-end module is powered by the battery Vbatt.

In the second embodiment of the present invention, as shown in Figure 4(a), a low-power Wi-Fi radio frequency front-end module includes a transmission path and a reception path, as well as a transceiver radio frequency switch TR_SW, a power switch VCC_SW and a control unit Controller. Wherein, the transmitting path includes a power amplifier PA, a first input matching circuit IMN1 and a first output matching circuit OMN1; the receiving path includes a low noise amplifier LNA, a second input matching circuit IMN2, and a second output matching circuit OMN2.

In the second embodiment of the present invention, the internal structure of the Wi-Fi radio frequency front-end module is the same as that of the first embodiment. The terminal is connected to the VCC2 power supply terminal.

Wherein, the VCC1 power is provided by the output voltage of the converter DC-DC1, the VCC2 power is provided by the output voltage of the converter DC-DC2, and the voltage VCC1 is higher than the voltage VCC2. The power supply of the converter DC-DC1 and the converter DC-DC2 is provided by the power supply battery Vbatt, and the converter DC-DC2 is generally an original module unit in the system.

When the Wi-Fi RF front-end module is in the state of high power output, the power switch VCC_SW is connected to the VCC1 power supply to provide a higher power supply voltage for the power amplifier PA, low-noise amplifier LNA and the transceiver RF switch TR_SW; when the Wi-Fi RF front-end module In the state of medium and low power output, the power switch VCC_SW is connected to the power supply of VCC2 to provide a lower power supply voltage for the power amplifier PA, the low noise amplifier LNA and the transceiver RF switch TR_SW. Therefore, the efficiency of the Wi-Fi radio frequency front-end module is improved.

In the second embodiment of the present invention, multiple Wi-Fi radio frequency front-end modules are shown in FIG. 4( b ). Among them, the power supply of each Wi-Fi RF front-end module is provided by two power supplies VCC1 and VCC2 output by converter DC-DC1 and converter DC-DC2, and the Wi-Fi RF front-end modules include single-pole double-throw power supplies Switch VCC_SW. When the Wi-Fi RF front-end module is in the low-to-medium output power state or in the MIMO state, the RF front-end module is powered by the VCC2 power output from the converter DC-DC2; when the Wi-Fi RF front-end module is in the high-power output state, The RF front-end module is powered by the VCC1 power output from the converter DC-DC1.

In the third embodiment of the present invention, as shown in Figure 5(a), on the basis of the second embodiment, the power switch VCC_SW is used as a separate power switch chip in the low-power Wi-Fi radio frequency front-end module to realize Fast switching function for the power supply of the Wi-Fi RF front-end module. Other working principles are the same as those of the second embodiment, so no more details are given here.

In addition, as shown in Figure 5(b), on the basis of the second embodiment, the power switch VCC_SW, the converter DC-DC1 and the converter DC-DC2 are integrated in a power supply in the low-power Wi-Fi RF front-end module In the module, the fast switching function of the power supply of the Wi-Fi RF front-end module is realized. Other working principles are the same as those of the second embodiment, so no more details are given here.

In the fourth embodiment of the present invention, as shown in FIG. 6 , a low-power Wi-Fi radio frequency front-end module includes a transmit path and a receive path, as well as a transceiver radio switch TR_SW, a power switch VCC_SW and a control unit Controller. Wherein, the transmission path includes a power amplifier PA, a first input matching circuit IMN1, a first output matching circuit OMN1 and a VDET (power detection) detection circuit; a receiving path includes a low noise amplifier LNA, a second input matching circuit IMN2, a second output matching circuit Circuit OMN2.

On the basis of the second embodiment, in the Wi-Fi radio frequency front-end module provided by the fourth embodiment, a VDET detection circuit is added to the transmission path.

In the transmission path, the input end of the first input matching circuit IMN1 is connected to the transmission signal input end TX_IN, the output end of the first input matching circuit IMN1 is connected to the input end of the power amplifier PA, and the output end of the power amplifier PA is connected to the first input end of the power amplifier PA on the one hand. The input end of an output matching circuit OMN1 is connected, on the other hand, it is connected with the input end of the VDET detection circuit, the output end of the first output matching circuit OMN1 is connected with the first terminal of the transceiver RF switch TR_SW; the output end of the VDET detection circuit is connected with The second control end of the power switch VCC_SW is connected.

The VDET detection circuit is used to detect the output power of the power amplifier PA in real time, and convert it into a voltage positively related to the output power, and the voltage is provided to the power switch VCC_SW. The switching logic of the power switch VCC_SW is defined according to the voltage value output by the VDET detection circuit.

When the voltage value is higher than the preset value, that is, when the output power of the power amplifier PA is higher than the preset power value, the Wi-Fi radio frequency front-end module provides a higher voltage by the converter DC-DC1; when the output of the VDET detection circuit When the voltage value is lower than the preset value, that is, when the output power of the power amplifier PA is lower than the preset power value, the Wi-Fi radio frequency front-end module is provided with a lower voltage by the converter DC-DC2. Therefore, the efficiency of the Wi-Fi radio frequency front-end module is improved.

It is also possible to compare the output voltage of the VDET detection circuit with different preset values ranging from high to low, and select and connect corresponding different power supplies ranging from high to low to supply power for the Wi-Fi radio frequency front-end module.

In addition, the output voltage of the VDET detection circuit can also be provided to the control unit Controller, and the control unit Controller provides the switching logic of the power switch VCC_SW. Other working principles are the same as those of the second embodiment, so details are not repeated here.

In the fifth embodiment of the present invention, as shown in Figure 7(a), the internal structure of the Wi-Fi radio frequency front-end module is the same as that of the second embodiment. Throwing switch, the multiple terminals on the power supply side are respectively connected to the output terminals of multiple DC-DC converters. The multiple DC-DC converters are all original power modules in the system that supply power to other functional modules, and the output voltage The size is different, the voltage from high to low is VCC1, VCC2...VCCn. The control unit Controller controls and switches the power supply voltage of the Wi-Fi radio frequency front-end module from high to low according to the preset power value from high to low, so that the efficiency of the Wi-Fi radio frequency front-end module is improved. Other working principles are the same as those of the second embodiment, so no more details are given here.

In the fifth embodiment of the present invention, multiple Wi-Fi radio frequency front-end modules are shown in FIG. 7( b ). Among them, the power supply of each Wi-Fi RF front-end module is provided by the output voltages VCC1, VCC2...VCCn of multiple DC-DC converters, and the output voltages are VCC1, VCC2...VCCn from high to low; Each Wi-Fi radio frequency front-end module includes a single-pole multi-throw power switch VCC_SW. When the Wi-Fi radio frequency front-end module is in different output power states such as high, medium and low, the radio frequency front-end module is powered by one of the corresponding VCC1, VCC2...VCCn power supplies respectively. Therefore, the efficiency of the Wi-Fi radio frequency front-end module is improved.

It should be noted that, the Wi-Fi radio frequency front-end module in the above embodiments only shows a transmission path, a reception path and a power switch, but the technical solution of the present invention is not limited thereto. In other embodiments of the present invention, the Wi-Fi radio frequency front-end module may include multiple transmission paths, multiple reception paths, and multiple power supply switches. similar.

It should be noted that the above-mentioned multiple embodiments are only examples, and the technical solutions of each embodiment can be combined, all of which are within the protection scope of the present invention.

An embodiment of the present invention provides an integrated circuit chip, which includes the above-mentioned low-power Wi-Fi radio frequency front-end module, and is used as an important part of the radio frequency front-end module in a wireless communication system. The specific structure of the low-power Wi-Fi radio frequency front-end module in the integrated circuit chip will not be repeated here.

The low-power Wi-Fi radio frequency front-end module provided by the present invention can be used in electronic equipment as an important part of communication components. The electronic devices mentioned here refer to computer devices that can be used in a mobile environment and support GSM, EDGE, TD_SCDMA, TDD_LTE, FDD_LTE and other communication standards, including mobile phones, notebook computers, tablet computers, vehicle-mounted computers, etc. In addition, the technical solutions provided by the present invention are also applicable to other applications of radio frequency integrated circuits, such as communication base stations, intelligent networked vehicles, and the like.

As shown in FIG. 8 , the electronic device includes at least a processor and a memory, and may further include a communication component, a sensor component, a power supply component, a multimedia component, and an input/output interface according to actual needs. Wherein, memory, communication components, sensor components, power supply components, multimedia components and input/output interfaces are all connected with the processor. The memory can be Static Random Access Memory (SRAM), Electrically Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory ( ROM), magnetic memory, flash memory, etc., and the processor can be a central processing unit (CPU), a graphics processing unit (GPU), a field programmable logic gate array (FPGA), an application-specific integrated circuit (ASIC), a digital signal processing ( DSP) chips, etc. Other communication components, sensor components, power supply components, multimedia components, etc. can be realized by general components, which will not be described in detail here.

To sum up, compared with the prior art, the low-power Wi-Fi radio frequency front-end module provided by the present invention adopts the technical solution of switching different power supply voltages by using a power switch, without increasing system cost and meeting the requirements of Wi-Fi systems. In the case of switching time, the Wi-Fi RF front-end module is powered by a corresponding lower voltage when the power output is lower, thereby greatly improving system efficiency, and at the same time, optimizing device junction temperature and high-speed DEVM performance. Therefore, the low-power Wi-Fi radio frequency front-end module provided by the present invention has beneficial effects such as ingenious and reasonable structural design, low cost, high efficiency, and excellent circuit performance.

It should be noted that the “formation” mentioned in the present invention means that it can be obtained by one of various processes, and is not limited to the processes listed in the examples.

It should be understood that the orientation or positional relationship indicated by the terms "thickness", "depth", "upper", "lower", "horizontal" etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention. The invention and the simplified description do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

The low power consumption Wi-Fi radio frequency front-end module, chip and electronic equipment provided by the present invention have been described in detail above. For those of ordinary skill in the art, any obvious changes made to it without departing from the essence of the present invention will constitute an infringement of the patent right of the present invention and will bear corresponding legal responsibilities.

Claims (10)

1. A low power consumption Wi-Fi radio frequency front-end module is characterized in that comprising at least one transmitting path, at least one receiving path and at least one power switch, and a transceiver radio frequency switch and a control unit; wherein, One end of the transmitting path is connected to the transmitting signal input end, one end of the receiving path is connected to the receiving signal output end, and the other end of the transmitting path and the receiving path are respectively connected to two terminals on one side of the transceiver radio frequency switch. The terminals are correspondingly connected, and the other end of the transceiver radio frequency switch is connected to the antenna end; The control unit is used to provide control signals for the transceiver radio frequency switch and the power switch, and provide a bias voltage for the Wi-Fi radio frequency front-end module; The power switch is used to switch the power supply of the Wi-Fi radio frequency front-end module according to the control signal, and its at least two input terminals are respectively connected to at least two power supply terminals with different voltages; When the Wi-Fi radio frequency front-end module is in the state of different power output from high to low, the power switch is respectively connected to the power supply of different voltage from high to low to supply power for the Wi-Fi radio frequency front-end module , to reduce the power consumption of the Wi-Fi radio frequency front-end module. 2. The low power consumption Wi-Fi radio frequency front-end module as claimed in claim 1, is characterized in that: The transmission path includes at least a power amplifier, a first input matching circuit and a first output matching circuit; wherein, The transmit signal input terminal is connected to the input terminal of the first input matching circuit, the output terminal of the first input matching circuit is connected to the input terminal of the power amplifier, and the output terminal of the power amplifier is connected to the first input matching circuit. An input terminal of an output matching circuit is connected, and an output terminal of the first output matching circuit is connected with the first connection terminal of the transceiver radio frequency switch. 3. The low power consumption Wi-Fi radio frequency front-end module as claimed in claim 1, is characterized in that: The receiving path includes at least a low noise amplifier, a second input matching circuit, and a second output matching circuit; wherein, The second terminal of the transceiver radio frequency switch is connected to the input terminal of the second input matching circuit, the output terminal of the second input matching circuit is connected to the input terminal of the low noise amplifier, and the input terminal of the low noise amplifier The output end is connected to the input end of the second output matching circuit, and the output end of the second output matching circuit is connected to the received signal output end. 4. The low power consumption Wi-Fi radio frequency front-end module as claimed in claim 1, is characterized in that: The control terminal of the power switch is connected to the control unit, and its input terminal is respectively connected to the power supply battery and multiple DC-DC converters or output terminals of multiple DC-DC converters, wherein the multiple DC-DC The power supply of the converter is provided by the power supply battery, and the output voltages of multiple DC-DC converters are different; The output terminals of the power switch are at least respectively connected to the power amplifiers in the transmission path, the low noise amplifiers in the reception path, and the power terminals of the transceiver radio frequency switch. 5. The low power consumption Wi-Fi radio frequency front-end module as claimed in claim 1, is characterized in that: When the Wi-Fi radio frequency front-end module is in the state of different power output from high to low, the control unit sends a control signal according to the preset power value, and controls the power switch to turn on the corresponding voltage from high to low. A power supply for supplying power to the Wi-Fi radio frequency front-end module. 6. The low power consumption Wi-Fi radio frequency front-end module as claimed in claim 2, is characterized in that: The transmission path also includes a VDET detection circuit, which is used to detect the output power of the power amplifier in real time, and convert it into a voltage positively related to the output power to provide to the power switch; the input terminal of the VDET detection circuit is connected to the The output terminal of the power amplifier is connected, and the output terminal of the VDET detection circuit is connected with the power switch; After the power switch compares the output voltage of the VDET detection circuit with a preset value, it selects to connect a corresponding power supply to supply power to the Wi-Fi radio frequency front-end module. 7. The low power consumption Wi-Fi radio frequency front-end module as claimed in claim 6, is characterized in that: The output terminal of the VDET detection circuit is connected to the control unit, and the control unit sends a control signal after comparing the output voltage of the VDET detection circuit with a preset value, and controls the power switch to turn on the corresponding power supply , supplying power to the Wi-Fi radio frequency front-end module. 8. The low power consumption Wi-Fi radio frequency front-end module as claimed in claim 1, is characterized in that: In the Wi-Fi radio frequency front-end module, the power switch is independently integrated into a power switch chip, or integrated with the DC-DC converter into a power chip. 9. An integrated circuit chip, characterized in that it comprises a low-power Wi-Fi radio frequency front-end module according to any one of claims 1-8. 10. An electronic device, characterized in that it comprises a low-power Wi-Fi radio frequency front-end module according to any one of claims 1-8.