CN117200822A

CN117200822A - Radio frequency transmitting module, protection method thereof, communication equipment and readable storage medium

Info

Publication number: CN117200822A
Application number: CN202210634057.1A
Authority: CN
Inventors: 岳仲博
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2023-12-08

Abstract

The application relates to a radio frequency transmitting module, a protection method thereof, communication equipment and a readable storage medium, wherein the radio frequency transmitting module comprises a power module, a power amplifying module, a sampling module and a switch module, and the switch module is connected between the power ends of the power module and the power amplifying module; when the switch module is conducted, the power module provides a power supply signal for the power amplification module so that the power amplification module performs power amplification on the received radio frequency signal; the sampling module is used for collecting power supply signals on a power supply channel between the power supply module and the power amplification module, acquiring signal change rates of the power supply signals at all sampling moments in a preset time period, accurately judging abnormal conditions of the power amplification module when the signal change rates meet preset turn-off conditions, and outputting turn-off signals so that the switch module turns off the power supply channel, and accordingly, a scene that the power amplification module is burnt out in a small probability can be accurately judged, and the power supply channel can be turned off in time, and continuous abnormal high current of the power amplification module is avoided.

Description

Radio frequency transmitting module, protection method thereof, communication equipment and readable storage medium

Technical Field

The present application relates to the field of antenna technologies, and in particular, to a radio frequency transmitting module, a protection method thereof, a communication device, and a readable storage medium.

Background

In related rf technology, a power amplifier is used to amplify a weak small signal generated by a rf transceiver into a high-power strong signal, and radiate the signal into free space through an antenna to communicate with a base station.

However, since the power amplifier in the rf transmit path is a high-power device, and is often operated under high-temperature, high-power, and high-current operating scenarios, a small probability burn-out event is likely to occur, which is difficult to be accurately measured in advance. When the power amplifier burns out, the continuous abnormal high current can cause severe heating of the communication equipment, and the surface temperature rises, so that the use of a user is influenced.

Disclosure of Invention

The embodiment of the application provides a radio frequency emission module, a protection method thereof, communication equipment and a readable storage medium, which can accurately measure a small probability burning event, avoid continuous abnormal large current and improve the serious heating problem of the communication equipment in an abnormal production scene.

The first aspect of the present application provides a radio frequency transmitting module, comprising:

the input end of the power amplification module is used for being connected with the radio frequency transceiver, and the output end of the power amplification module is connected with the antenna;

A power module;

the first end of the switch module is connected with the power supply module, and the second end of the switch module is connected with the power supply end of the power amplification module; when the switch module is conducted, the power module provides a power supply signal for a power end of the power amplification module, so that the power amplification module performs power amplification on a received radio frequency signal from the radio frequency transceiver under the action of the power supply signal;

the sampling module is used for acquiring the power supply signal on a power supply channel between the power supply module and the power amplification module, the output end of the sampling module is connected with the controlled end of the switch module, the sampling module is used for acquiring the signal change rate of the power supply signal at each sampling moment in a preset time period, and outputting a turn-off signal when the signal change rate meets a preset turn-off condition, so that the switch module cuts off the power supply channel when receiving the turn-off signal.

The second aspect of the present application provides a method for protecting a radio frequency transmitting module, including:

collecting power supply signals on a power supply path between a power supply module and a power amplification module;

Acquiring the signal change rate of the power supply signal at each sampling moment in a preset time period;

disconnecting the power supply path when the signal change rate meets a preset turn-off condition;

when the power supply channel is conducted, the power amplification module performs power amplification on a received radio frequency signal from the radio frequency transceiver under the action of the power supply signal.

A third aspect of the present application provides a communication device comprising:

the radio frequency transmitting module is as described above.

A fourth aspect of the present application provides a communication device comprising:

the power supply module is used for providing a power supply signal for a power end of the power amplification module so that the power amplification module can perform power amplification on a received radio frequency signal from the radio frequency transceiver under the action of the power supply signal;

a memory storing a computer program and a processor implementing the steps of the protection method as described above when the processor executes the computer program.

A fifth aspect of the application provides a computer readable storage medium having stored thereon a computer program, characterized in that the computer program when executed by a processor implements the steps of the protection method as described above.

The radio frequency transmitting module comprises a power module, a power amplifying module, a sampling module and a switch module, wherein the input end of the power amplifying module is connected with a radio frequency transceiver, and the output end of the power amplifying module is connected with an antenna; the first end of the switch module is connected with the power supply module, and the second end of the switch module is connected with the power supply end of the power amplification module; when the switch module is conducted, the power supply module provides a power supply signal for the power end of the power amplification module, so that the power amplification module performs power amplification on a received radio frequency signal from the radio frequency transceiver under the action of the power supply signal; the sampling module is used for acquiring power supply signals on a power supply channel between the power supply module and the power amplification module, the output end of the sampling module is connected with the controlled end of the switch module, the sampling module is used for acquiring the signal change rate of the power supply signals at each sampling moment in a preset time period, and accurately judging the abnormal condition of the power amplification module and outputting a turn-off signal when the signal change rate meets a preset turn-off condition so that the switch module turns off the power supply channel, thereby accurately judging the scene of the power amplification module with small probability of burning out and timely turning off the power supply channel under the scene so as to avoid serious heating caused by continuous abnormal heavy current of the power amplification module.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an RF transmitter module according to an embodiment;

FIG. 2 is a second schematic diagram of an RF transmitter module according to an embodiment;

FIG. 3 is a third schematic diagram of an RF transmission module according to an embodiment;

FIG. 4 is a schematic diagram of a RF transmitter module according to an embodiment;

FIG. 5 is a schematic diagram of a structure of an RF transmitting module according to an embodiment;

FIG. 6 is a schematic diagram of a structure of an RF transmitting module according to an embodiment;

FIG. 7 is a flowchart of a method for protecting an RF transmitter module according to one embodiment;

FIG. 8 is a second flowchart of a method for protecting an RF transmitter module according to an embodiment;

FIG. 9 is a third flowchart of a method for protecting an RF transmitter module according to one embodiment;

Fig. 10 is a schematic structural diagram of a communication device in an embodiment.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It will be understood that the terms first, second, etc. as used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element and should not be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The radio frequency transmitting module according to the embodiment of the present application may be applied to a communication device having a wireless communication function, where the communication device may be a handheld device, a vehicle-mounted device, a wearable device, a computing device, or other processing devices connected to a wireless modem, and various types of User Equipment (UE), such as a Mobile phone, a Mobile Station (MS), and so on. For convenience of description, the above-mentioned devices are collectively referred to as communication devices.

As shown in fig. 1, in one embodiment, a radio frequency transmitting module 10 provided in the present application includes a power module 110, a power amplifying module 120, a sampling module 130, and a switch module 140.

The input end of the power amplification module 120 is used for being connected with the radio frequency transceiver 150, and the output end of the power amplification module 120 is used for being connected with the antenna ANT; a first end of the switch module 140 is connected with the power module 110, and a second end of the switch module 140 is connected with a power end of the power amplifying module 120; when the switch module 140 is turned on, the power module 110 provides a power supply signal to the power supply end of the power amplification module 120, so that the power amplification module 120 performs power amplification on the received radio frequency signal from the radio frequency transceiver 150 under the action of the power supply signal; the sampling module 130, the collection end of the sampling module 130 is used for collecting the power supply signal on the power supply path between the power supply module 110 and the power amplification module 120, the output end of the sampling module 130 is connected with the controlled end of the switch module 140, the sampling module 130 is used for obtaining the signal change rate of the power supply signal at each sampling moment in a preset time period, and when the signal change rate meets a preset turn-off condition, a turn-off signal is output, so that the switch module 140 turns off the power supply path when receiving the turn-off signal.

Wherein, the power module 110 is configured to provide a power supply signal to the power amplifying module 120. The Power module 110 may include, for example, a battery and a Power Management IC (PMIC) connected to the battery to supply electric Power of the battery to the Power amplifying module 120.

The power supply end, the input end and the output end of the power amplification module 120 are respectively connected with the power supply module 110, the radio frequency transceiver 150 and the antenna ANT, and are used for amplifying power of the received radio frequency signal under the power supply effect of the power supply module 110. The Power amplifying module 120 may be understood as a single Power Amplifier (PA), or may be understood as a module integrated with a Power amplifier and other devices, where, when the Power amplifying module 120 is integrated with a module of a Power amplifier and other devices, a Power supply path between the Power module 110 and the Power amplifying module 120 is still understood as a Power supply path between the Power module 110 and a Power supply terminal of the Power amplifier. The power amplifier amplifies the power of the rf signal output from the rf transceiver 150 under the power supply of the power module 110, and outputs the amplified rf signal to the antenna ANT for being transmitted to the outside through the antenna ANT. The antenna ANT may support reception and transmission of radio frequency signals in different frequency bands, for example, the radio frequency signals after power amplification by the power amplification module 120 may be radiated into free space. The antenna ANT may be a directional antenna ANT or a non-directional antenna ANT. Illustratively, the antenna ANT may be formed using any suitable type of antenna ANT, and in embodiments of the present application, the type of antenna ANT is not limited.

The first end of the switch module 140 is connected to the power module 110, the second end of the switch module 140 is connected to the power end of the power amplifying module 130, and the controlled end of the switch module 140 is connected to the output of the sampling module 130. Optionally, the default state of the switch module 140 is an on state, and when the switch module 140 is in the default state, the power supply path is turned on, so that the power supply module 110 provides a power supply signal to the power amplifying module 130 and the sampling module 130. Optionally, the switching module 140 includes at least one switching device, which may be, for example, a normally closed switch or a switching tube, and may further include other devices having a switching function, which is not further limited herein. Taking a switching device as an example of a normally closed switch, a normally closed movable contact of the normally closed switch is connected with the first power module 110, a normally closed stationary contact of the normally closed switch is connected with the power amplification module 130, a controlled contact of the normally closed switch is connected with the output end of the sampling module 130, and the normally closed switch is in a closed state when in a default state; when the normally closed switch receives the turn-off signal, the normally closed switch is in an off state.

The sampling module 130 is connected to the power supply path, and the sampling module 130 can accurately obtain the power supply signal on the power supply path between the power module 110 and the power amplification module 120 at each sampling time, and obtain the signal change rate of the power supply signal at each sampling time in a preset time period, and output the turn-off signal when the signal change rate meets a preset turn-off condition. The connection between the collection end of the sampling module 130 and the power supply path may be that the collection end of the sampling module 130 is connected to the first ends of the power module 110 and the switch module 140 (as shown in fig. 1), or that the collection end of the sampling module 130 is connected to the second ends of the switch module 140 and the power end of the power amplifying module 120 (as shown in fig. 2).

The preset turn-off condition refers to a preset determination condition related to a signal change rate of the power supply signal in a preset period of time and capable of indicating that the power amplification module 120 is currently in a burning state, and when the signal change rate meets a corresponding determination condition, the power amplification module 120 is illustrated as being currently in the corresponding burning state. Because the power amplifier module 120 is a high-power device, the power amplifier is often in a high-temperature, high-power and high-current working scene, and a small-probability burning event may occur. When the power amplifier is burnt, short circuit occurs in the power amplifier, so that a power supply signal is abnormal, an abnormal large current is generated on a power supply path, and a serious heating condition occurs; therefore, when the sampling module 130 determines that the signal change rate meets the preset turn-off condition, the current state of the power amplification module 120 can be accurately determined, and at this time, the sampling module 130 outputs the turn-off signal to enable the switch module 140 to disconnect the power supply path, so that the occurrence of serious heating caused by the fact that the power amplification module 120 continues to have large current and abnormal large current can be avoided.

Optionally, the preset turn-off condition may include that the signal change rate exceeds a safety threshold range or the signal change rate is in a dangerous threshold range, where the safety threshold range may be a preset range in which the change rate of the power supply signal at each sampling time in the preset time period is located when the power amplification module works normally, and when the signal change rate exceeds the safety threshold range, it is indicated that the power amplification module works abnormally; the dangerous threshold range may be a preset range in which the change rate of the power supply signal at each sampling time in a preset time period is located when the preset power amplification module works abnormally, and when the change rate of the signal is in the dangerous threshold range, the abnormal work of the power amplification module is indicated. Specifically, the signal change rate is a change rate of a parameter corresponding to the power supply signal, for example, a voltage change rate, a current change rate, and the like in the power supply signal in a preset time period, and the change rates corresponding to different parameters correspond to different preset turn-off conditions.

Taking the case that the signal change rate is the voltage change rate and the preset turn-off condition includes that the signal change rate is in the dangerous threshold range as an example, when the power amplification module 120 is in normal operation, the power supply signal on the power supply channel is usually a high level signal, for example, 4.5V-5.0V, and when the power amplification module 120 is in abnormal operation, for example, when the power amplification module 120 is burnt out, the power amplification module 120 is internally shorted, which is equivalent to the direct shorting of the power supply module 110 to the ground, at this time, the power supply signal is changed from 4.5V-5.0V to 0V or is close to 0, and taking the case that the power supply signal is changed to 0 as an example, the voltage change rate within the dangerous threshold range of 1s is set to 4.0V/s-5.0V/s, therefore, when the sampling module 130 acquires the voltage change rate of the power supply signal at the sampling time in every 1s is 4.0V/s-5.0V/s, the power amplification module 120 can be determined to be in the current in the burnt out state, so that the switch module 140 is turned off to avoid the abnormal large current of the power amplification module 120.

It should be noted that, the safety threshold range and the dangerous threshold range may be set and adjusted according to the power supply condition and the working condition of the actual device, and the signal change rate is not limited to the voltage change rate and the current change rate, but only the signal parameter change rate related to the normal working condition and the abnormal working condition of the power amplifying module 130 may be used, which is not further limited in the embodiments of the present application.

Optionally, taking the power supply signal as an analog voltage signal as an example, the sampling module 130 may be an ADC (Analog to Digital Converter, an analog-digital converter), and the ADC may accurately collect the voltage signal at each moment, calculate to obtain a signal change rate, and output a digital off signal or an on signal according to the signal change rate and a preset off condition, so that the switch module 140 performs an off action or an on action according to the digital signal output by the ADC. For example, the switching module 140 may be set to be turned off when receiving the digital signal 0, turned on in a default state and when receiving the digital signal 1, and set the ADC to output the digital signal 0 when the signal change rate satisfies the preset off condition, and output the digital signal 1 when the signal change rate does not satisfy the preset off condition.

The radio frequency transmitting module 10 provided by the embodiment comprises a power module 110, a power amplifying module 120, a sampling module 130 and a switch module 140, wherein the input end of the power amplifying module 120 is connected with a radio frequency transceiver, and the output end of the power amplifying module 120 is connected with an antenna; a first end of the switch module 140 is connected with the power module 110, and a second end of the switch module 140 is connected with a power end of the power amplifying module 120; when the switch module 140 is turned on, the power module 110 provides a power supply signal to the power supply end of the power amplification module 120, so that the power amplification module 120 performs power amplification on the received radio frequency signal from the radio frequency transceiver 150 under the action of the power supply signal; the collection end of the sampling module 130 is used for collecting a power supply signal on a power supply path between the power supply module 110 and the power amplification module 120, the output end of the sampling module 130 is connected with the controlled end of the switch module 140, the sampling module 130 is used for obtaining the signal change rate of the power supply signal at each sampling moment in a preset time period, and accurately judging the abnormal condition of the power amplification module and outputting the turn-off signal when the signal change rate meets a preset turn-off condition, so that the switch module 140 turns off the power supply path, and therefore a scene of the power amplification module 120 burnt out with small probability can be accurately judged, and the power supply path is turned off in time under the scene, so that severe heating caused by the fact that the power amplification module 120 continuously generates abnormal heavy current is avoided.

In one embodiment, the sampling module 130 is further configured to output a turn-on signal at a preset time interval after the power supply path is disconnected, so that the switch module 140 is turned on, and collect the power supply signal again; and the power supply device is also used for outputting a turn-off signal and stopping sampling under the condition that the signal change rate of the power supply signal meets the preset turn-off condition in the continuous preset times.

In order to prevent the problem that the power amplification module 120 cannot normally operate due to the false triggering of the sampling module 130 with a very small probability, that is, when the power amplification module 120 is in a normal operating state and the power supply channel is not shorted, due to the problem of the sampling module 130, the power supply signal is detected to be abnormal with a very small probability by mistake and the power supply channel is controlled to be disconnected, so that the power amplification module 120 cannot normally operate and the communication equipment cannot normally communicate, the sampling module 130 is further configured to output a conducting signal at intervals of preset time to enable the switch module 140 to be conducted after the power supply channel is disconnected, and collect the power supply signal again; and the power supply device is also used for outputting a turn-off signal and stopping sampling under the condition that the signal change rate of the power supply signal meets the preset turn-off condition in the continuous preset times. Since the signal change rates of the power supply signals all meet the preset turn-off condition in the continuous preset times, which indicates that the sampling module 130 has not been triggered by mistake before, the power amplification module 120 can be determined to burn out, and no sampling is performed later.

The preset time can be adjusted and set according to actual needs, for example, the preset time can be 3s, and after the power supply channel is disconnected for 3s, a conduction signal is output so that the power supply channel is conducted again to obtain the signal change rate again. The number of continuous presets is not particularly limited, and may be 1 or more.

Alternatively, the sampling module 130 in the above embodiment may integrate an independent clock circuit and a counting circuit in the device, so that the sampling module 130 has a timing and counting function, and thus the sampling module 130 may output a turn-on signal at intervals of a preset time and may record the number of times of determination. For example, when the sampling module 130 is an ADC, the ADC may integrate a clock circuit and a counting circuit therein to realize timing and counting functions. Alternatively, parameter settings for each preset time, preset times, and the like may be configured by software in advance.

Optionally, the sampling module 130 is further configured to output an on signal and stop sampling when the signal change rate does not satisfy the preset off condition at least once in the continuous preset times. For example, if the preset turn-off condition is that the voltage value of the power supply signal is 0V, the preset turn-on condition may be that the signal change rate is in a dangerous threshold range, the voltage change rate in a 1s time period is 4.0V/s-5.0V/s, when the sampling module 130 determines that the voltage change rate of the power supply signal at the sampling time is not in the range of 4.0V/s-5.0V/s in every 1s time period, it indicates that the power amplification module 120 is not burned, it determines that the last protection is false triggering, keeps the power supply path on, and the power amplification module 120 resumes normal operation.

Taking the continuous preset times of 3 times and the preset turn-off condition as the voltage change rate of the power supply signal in the 1s time period as an example for explanation, when the sampling module 130 detects that the voltage change rate of the power supply signal in the 1s time period is 4.0V/s-5.0V/s, and turns off the power supply channel, a turn-on signal is output after an interval of 3s to turn on the power supply channel, and the signal change rate of the power supply signal is detected again.

At this time, if the power supply signal is recovered to a signal change rate not within the range of 4.0V/s-5.0V/s, indicating that the power amplification module 120 is not burned, determining that the last protection is false triggering, and maintaining the output conduction signal to conduct the power supply path, so that the power amplification module 120 resumes normal operation; continuously detecting for 3 times, if one power supply signal is recovered to the signal change rate not being in the range of 4.0V/s-5.0V/s, judging that the last time is false triggering, and recovering the normal operation of the power amplification module 120; if the connection detection is performed 3 times, and the signal change rate of the power supply signal is in the range of 4.0V/s-5.0V/s, the power amplification module 120 is judged to be burnt, and the acquisition is not performed later.

Therefore, by detecting the sampling module 130 continuously and preset times, correct triggering can be accurately controlled, and abnormal triggering is avoided from affecting normal use of the power amplification module 120.

In one embodiment, the power amplifying module 120 and the switch module 140 are respectively multiple, the first end of each switch module 140 is connected with the power module 110, and the controlled end of each switch module 140 is connected with the sampling module 130; the input end of each power amplification module 120 is connected with the radio frequency transceiver 150, the output end of each power amplification module 120 is connected with an antenna ANT, and the power supply ends of a plurality of power amplification modules 120 are respectively connected with the second ends of a plurality of switch modules 140 in a one-to-one correspondence manner; the sampling module 130 is configured to obtain a signal change rate of a power supply signal on a power supply path between the power supply module and each power amplification module, and output a turn-off signal to the corresponding switch module 140 when the signal change rate meets a preset turn-off condition.

Wherein, when the number of the power amplifying modules 120 is plural, the plural power amplifying modules 120 may integrate Multi-band Multi-mode power amplifiers (MMPA) of the plural power amplifiers. The power amplification modules 120 may form multiple transmission paths, so that the rf transmission module 10 supports multiple transmission processes, and improves communication quality and user experience. By providing the corresponding switch module 140 for the power supply path of each power amplification module 120, the sampling module 130 can control the switch module 140 on the corresponding power supply path to be turned off when the power supply path of the corresponding power amplification module 120 is abnormal, so as to disconnect the abnormal power supply path.

Optionally, when the number of the power amplification modules 120 is plural, the radio frequency transmission module 10 may further provide a gating module between the plural power amplification modules 120 and the plural antennas ANT to selectively conduct the connection between each power amplification module 120 and the corresponding antenna ANT.

It should be noted that, in other embodiments, when the number of the power amplification modules 120 is multiple, different power amplification modules 120 may also be powered by different power modules 110, for example, different power amplification modules 120 may be capable of amplifying power signals in different frequency bands or different standards, so that power requirements required by different power amplification modules 120 are different, and by setting different power modules 110 to power different power amplification modules 120, a power amplification effect may be improved, and further communication quality may be improved.

Optionally, at least one of the switch module 140 and the sampling module 130 in the above embodiment may be integrated with the power amplifying module 120 to form an integrated circuit as shown in fig. 3-5, so as to effectively reduce the occupied area of the radio frequency transmitting module 10, improve the integration level of the device, be beneficial to miniaturization of the device, and reduce the cost.

For example, as shown in fig. 3 (fig. 3 illustrates that the power amplifying module 120 includes a power amplifier PA and the switch module 140 includes a normally closed switch SW, where S1 is a controlled end of the normally closed switch SW), the power amplifying module 120, the sampling module 130, and the switch module 150 in the foregoing embodiments may be integrated with the first transmitting circuit 101; the first transmitting circuit 101 is configured with a first power supply port VCC1, an input port PA IN, and an output port OUT, where the first power supply port VCC1 is connected to the first ends of the power supply module 110, the switch module 140, and the acquisition end J1 of the acquisition module 130, the input port PA IN is connected to the input ends of the radio frequency transceiver 150 and the power amplification module 120, and the output port OUT is connected to the output end of the power amplification module 120 and the antenna ANT.

For example, as shown in fig. 4 (fig. 4 illustrates that the power amplification module 120 includes a power amplifier PA and the switch module 140 includes a normally closed switch SW, where S1 is a controlled end of the normally closed switch SW), the power amplification module 120 and the acquisition module 130 in the foregoing embodiments may integrate the second transmitting circuit 102; the second transmitting circuit 102 is configured with a second power supply port VCC2, a control port CT, an input port PA IN, and an output port OUT, where the second power supply port VCC2 is connected to the second end of the switch module 140, the power supply end of the power amplification module 120, and the acquisition end J1 of the acquisition module 130, the control port CT is connected to the controlled end S1 of the switch module 140 and the output end of the control module 130, the input port PA IN is connected to the input ends of the radio frequency transceiver 150 and the power amplification module 120, and the output port OUT is connected to the output end of the power amplification module 120 and the antenna ANT, respectively.

For example, as shown in fig. 5 (fig. 5 illustrates that the power amplifying module 120 includes a power amplifier PA and the switch module 140 includes a normally closed switch SW, where S1 is a controlled end of the normally closed switch SW), the power amplifying module 120 and the switch module 140 in the foregoing embodiments may integrate the third transmitting circuit 103; the third transmitting circuit 103 is configured with a third power supply port VCC3, a controlled port BCT, an input port PA IN, and an output port OUT, where the third power supply port VCC3 is connected to the first ends of the power supply module 110 and the switch module 140, and the acquisition end J1 of the acquisition module 130, the controlled port BCT is connected to the controlled end S1 of the switch module 140, and the output end of the acquisition module 130, the input port PA IN is connected to the input ends of the radio frequency transceiver 150 and the power amplification module 120, and the output port OUT is connected to the output end of the power amplification module 120, and the antenna ANT, respectively.

In one embodiment, as shown in fig. 6, the rf transmitting module 10 may further include a temperature detecting module 160 and a processing module 170.

A temperature detection module 160 for detecting temperature information of the power amplification module 120; the processing module 170 is respectively connected to the controlled end of the switch module 140 and the power amplification module 120, and is configured to obtain temperature information of the temperature detection module 160 when detecting that the switch module 140 is kept on for a preset time, and control the power amplification module 120 to adjust the amplification power when the temperature information meets a preset temperature condition.

The temperature detection module 160 is configured to detect temperature information of the power amplification module 120 and output the temperature information to the processing module 170, alternatively, the temperature detection module 160 may be a temperature sensor, and the temperature sensor may be disposed near the power amplification module 120 so as to obtain temperature information of the power amplification module 120. When the processing module 170 detects that the switch module 140 is kept in a conducting state within a preset time, temperature information of the temperature detection module 160 is obtained, and when the temperature information meets a preset temperature condition, the power amplification module 120 is controlled to adjust the amplification power, so that the power consumption of the power amplification module 120 is reduced, the temperature is reduced, and the power amplification circuit is prevented from being continuously heated to finally cause burning.

The preset temperature condition refers to a preset determination condition related to temperature information and capable of indicating that the power amplification module 120 is currently in a critical burning state, and when the temperature information meets the corresponding determination condition, it is indicated that the power amplification module 120 is currently in the critical burning state, and if not regulated, the risk of potential burning is possible. When the power amplification module 120 is currently in the critical burning state, the temperature of the power amplification module 120 continuously rises due to continuous aggravation of heat generation, and at this time, the processing module 170 can determine the rising condition of the temperature according to the temperature information, so as to determine the dangerous condition currently faced by the power amplification module 120, and accordingly control the power amplification module 120 to regulate the output power, thereby improving the heat generation condition. Alternatively, the preset temperature condition may be that the temperature parameter value in the temperature information is greater than or equal to a preset temperature threshold, and the preset temperature condition may be that the temperature parameter value in the temperature information is in a continuous rising trend in a preset time period.

Alternatively, the processing module 170 may determine whether the switch module 140 is in the on state by detecting the level state of the controlled end of the switch module 140, where the level state corresponds to the signal state of the signal output by the acquisition module 130, and the level state of the off signal is in the high level state and the level state of the on signal is in the low level state, for example, if the level state of the controlled end of the switch module 140 is detected to be in the high level, then the switch module 140 is determined to be in the off state, and if the level state of the controlled end of the switch module 140 is detected to be in the low level, then the switch module 140 is determined to be in the on state.

Alternatively, the processing module 170 controls the power amplification module 120 to adjust the output power, which may be that the processing module 170 is connected to a power end of the power amplification module 120 through the power module 110, and the processing module 170 outputs a voltage control signal to the power module 110, so that the power module 110 adjusts a power supply signal to the power amplification module 120 according to the voltage control signal on the basis of ensuring that the signal change rate of a preset time period is not changed, and further, the power amplification module 120 adjusts the output power according to the adjusted power supply signal; optionally, the processing module 170 controls the power amplification module 120 to adjust the output power, or the processing module 170 may be a radio frequency transceiver or a baseband processor, where the processing module 170 is directly connected to the controlled end of the power amplification module 120, and the radio frequency transceiver or the baseband processor outputs a corresponding control instruction to the power amplification module 120 according to the temperature information, so that the power amplification module 120 adjusts the output power.

Therefore, the temperature detection module 160 detects the temperature information of the power amplification module 120, and the processing module 170 performs burning pre-judgment according to the temperature information when detecting that the switch module 140 is kept in the on state within the preset time, and improves the heating condition when the power amplification module 120 is in the dangerous condition, and improves or even removes the risk of burning the power amplification module 120.

Optionally, the collecting module 130 in the foregoing embodiment may be further connected to the temperature detecting module 160, where the collecting module 130 may further obtain temperature information of the temperature detecting module 160 in real time, and when a temperature parameter in the temperature information exceeds a preset temperature threshold, the collecting module 130 outputs a turn-off signal to enable the switch module 140 to turn off the power supply path, so that a situation that the power amplifying module burns out with a small probability may be determined in time, and the power supply path is turned off in time in the situation, so as to avoid occurrence of severe heating caused by that the power amplifying module continues to have an abnormal heavy current.

The above-mentioned division of the circuits in the rf transmitting module 10 is merely for illustration, and in other embodiments, the rf transmitting module 10 may be divided into different circuits as needed to complete all or part of the functions of the rf module.

It should be noted that, the radio frequency transmitting module 10 may further include other auxiliary functional modules, for example, the radio frequency transmitting module 10 may further include a filtering module, and the filtering module is respectively connected with the radio frequency transceiver and the power amplifying module 120, and is configured to perform filtering processing on a radio frequency signal output by the radio frequency transceiver and then output the radio frequency signal to the power amplifying module 120. The filtering module may be integrated in the power amplifying module 120, the first transmitting circuit 101, the second transmitting circuit 102, or the third transmitting circuit 103 in the above embodiments, or may be disposed outside the power amplifying module 120, the first transmitting circuit 101, the second transmitting circuit 102, or the third transmitting circuit 103.

As shown in fig. 7, in one embodiment, the method for protecting a radio frequency transmitting module according to the embodiment of the present application further includes: step 702-step 706.

Step 702, collecting a power supply signal on a power supply path between a power supply module and a power amplification module.

Step 704, obtaining the signal change rate of the power supply signal at each sampling time in the preset time period.

Step 706, disconnecting the power supply path when the signal change rate meets a preset off condition.

When the power supply channel is conducted, the power amplification module performs power amplification on the received radio frequency signal from the radio frequency transceiver under the action of the power supply signal.

The power supply module, the power amplification module, the preset turn-off condition, the radio frequency transceiver, and the like are described in the above embodiments, and are not described herein; steps 702 to 706 may be performed by the acquisition module and the switch module in the above embodiments, and specific reference may be made to the related descriptions of the above embodiments, which are not repeated herein.

According to the protection method of the radio frequency emission module, the power supply signals on the power supply channel between the power supply module and the power amplification module are collected, the signal change rate of the power supply signals at each sampling moment in a preset time period is obtained, the power supply channel is disconnected when the signal change rate meets a preset turn-off condition, and therefore a scene that the power amplification module is burnt out in a small probability can be accurately judged, and the power supply channel is disconnected in time under the scene, so that severe heating caused by continuous abnormal heavy current of the power amplification module is avoided.

In one embodiment, as shown in fig. 8, the protection method further includes: step 802-step 804.

Step 802, after the power supply path is disconnected, controlling the power supply path to switch from the disconnected state to the conducting state at intervals of preset time and collecting the power supply signal again.

Step 804, when the signal change rate of the power supply signal meets the preset turn-off condition in the continuous preset times, the power supply path is controlled to be turned off and sampling is stopped.

In one embodiment, as shown in fig. 8, the protection method further includes: step 806.

Step 806, when the signal change rate does not meet the preset turn-off condition at least once in the continuous preset times, controlling the power supply path to be turned on and stopping detection.

The steps 802 to 806 may be performed by the acquisition module in the above embodiment, and specific reference may be made to the related description of the above embodiment, which is not repeated herein.

In one embodiment, as shown in fig. 9, the protection method further includes: step 902-step 904.

And step 902, acquiring temperature information of the power amplification module when the power supply path is detected to be kept in a conducting state within a preset time.

And step 904, controlling the power amplification module to adjust the output power when the temperature information meets the preset temperature condition.

The steps 902 to 904 are executed by the temperature detection module and the processing module in the above embodiments, and specific reference may be made to the description related to the above embodiments, which is not repeated herein.

The embodiment of the application also provides communication equipment, which can comprise the radio frequency transmitting module in any embodiment. The communication equipment of the embodiment comprises the radio frequency transmitting module in any embodiment, and can accurately judge the scene of the small probability burning of the power amplification module, and under the scene, the power supply channel is disconnected in time so as to avoid serious heating caused by continuous abnormal high current of the power amplification module.

The embodiment of the application also provides communication equipment which can comprise a power supply module, a power amplification module, a memory and a processor.

The input end of the power amplification module is used for being connected with the radio frequency transceiver, and the output end of the power amplification module is used for being connected with the antenna; the power supply module is used for providing a power supply signal for a power supply end of the power amplification module so that the power amplification module can perform power amplification on a received radio frequency signal from the radio frequency transceiver under the action of the power supply signal. The description of the power supply module and the power amplifying module may be referred to the description of the power supply module and the power amplifying module in the above embodiments, which is not repeated herein.

The memory stores a computer program, and the processor implements the steps of the protection method of the above embodiment when executing the computer program.

The communication equipment of this embodiment, including power module, power amplification module and memory and treater, can accurate judgement power amplification module small probability burns out the scene, under this scene, in time break off the power supply passageway to avoid power amplification module to last unusual heavy current and lead to the emergence of serious condition of generating heat.

As shown in fig. 10, further, the above communication device is exemplified as the mobile phone 11, specifically, as shown in fig. 10, the mobile phone 11 may include a memory 21 (which optionally includes one or more computer readable storage media), a processor 22, a peripheral interface 23, a radio frequency system 24, and an input/output (I/O) subsystem 26. These components optionally communicate via one or more communication buses or signal lines 29. It will be appreciated by those skilled in the art that the handset 11 shown in fig. 10 is not limiting and may include more or fewer components than shown, or may be combined with certain components, or a different arrangement of components. The various components shown in fig. 10 are implemented in hardware, software, or a combination of both hardware and software, including one or more signal processing and/or application specific integrated circuits.

Memory 21 optionally includes high-speed random access memory, and also optionally includes non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Illustratively, the software components stored in the memory 21 include an operating system 211, a communication module (or instruction set) 212, a Global Positioning System (GPS) module (or instruction set) 213, and the like.

The processor 22 and other control circuitry, such as control circuitry in the radio frequency system 24, may be used to control the operation of the handset 11. The processor 22 may be based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, and the like.

The processor 22 may be configured to implement a control algorithm that controls the use of the antenna in the handset 11. The processor 22 may also issue control commands or the like for controlling the various switches in the radio frequency system 24.

The I/O subsystem 26 couples input/output peripheral devices on the handset 11, such as keypads and other input control devices, to the peripheral interface 23. The I/O subsystem 26 optionally includes a touch screen, keys, tone generator, accelerometer (motion sensor), ambient light sensor and other sensors, light emitting diodes, and other status indicators, data ports, etc. Illustratively, a user may control the operation of the handset 11 by supplying commands via the I/O subsystem 26, and may use the output resources of the I/O subsystem 26 to receive status information and other outputs from the handset 11. For example, a user may activate the handset or deactivate the handset by pressing button 261.

The rf system 24 may include the rf transmission module 10 of any of the previous embodiments.

The embodiment of the application also provides a computer readable storage medium. One or more non-transitory computer-readable storage media containing computer-executable instructions that, when executed by one or more processors, cause the processors to perform the steps of a method of protecting a radio frequency transmission module.

The embodiment of the application also provides a computer program product containing instructions, which when run on a computer, cause the computer to execute the method for protecting the radio frequency transmission module.

Any reference to memory, storage, database, or other medium used in the present application may include non-volatile and/or volatile memory. Suitable nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RM), which acts as external cache memory. By way of illustration and not limitation, RMs are available in a variety of forms, such as Static RMs (SRMs), dynamic RMs (DRMs), synchronous DRMs (SDRMs), double data rates SDRM (DDR SDRM), enhanced SDRMs (ESDRMs), synchronous link (synchronous) DRMs (SLDRMs), memory bus (Rmbus) direct RMs (RDRMs), direct memory bus dynamic RMs (DRDRMs), and memory bus dynamic RMs (RDRMs).

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A radio frequency transmission module, comprising:

a power module;

2. The radio frequency emission module according to claim 1, wherein the sampling module is further configured to output a turn-on signal at intervals of a preset time after the power supply path is turned off, so that the switching module is turned on, and collect the power supply signal again; and the power supply device is further used for outputting the turn-off signal and stopping sampling under the condition that the signal change rate of the power supply signal meets the preset turn-off condition in the continuous preset times.

3. The radio frequency transmission module according to claim 2, wherein the sampling module is further configured to output the on signal and stop sampling when the signal change rate does not satisfy the preset off condition at least once of the consecutive preset times.

4. The radio frequency transmission module according to claim 1, wherein the number of the power amplification modules and the number of the switch modules are respectively plural, a first end of each switch module is connected with the power supply module, and a controlled end of each switch module is connected with an output end of the sampling module; the input end of each power amplification module is connected with the radio frequency transceiver, the output end of each power amplification module is connected with one antenna, and the power supply ends of a plurality of power amplification modules are respectively connected with the second ends of a plurality of switch modules in a one-to-one correspondence manner;

the sampling module is used for acquiring the signal change rate of the power supply signal on a power supply path between the power supply module and each power amplification module, and outputting the turn-off signal to the corresponding switch module when the signal change rate meets a preset turn-off condition.

5. The radio frequency transmission module according to any one of claims 1-4, wherein the power amplification module, the sampling module, and the switching module form a first transmission circuit;

the first transmitting circuit is configured with a first power port, an input port and an output port, the first power port is respectively connected with the power module, the first end of the switch module and the acquisition end of the sampling module, the input port is respectively connected with the input end of the radio frequency transceiver and the power amplification module, and the output port is respectively connected with the output end of the power amplification module and the antenna.

6. The radio frequency transmission module according to any one of claims 1-4, wherein the power amplification module and the sampling module form a second transmission circuit;

the second transmitting circuit is configured with a second power port, a control port, an input port and an output port, wherein the second power port is respectively connected with the second end of the switch module, the power end of the power amplification module and the acquisition end of the acquisition module, the control port is respectively connected with the controlled end of the switch module and the output end of the sampling module, the input port is respectively connected with the radio frequency transceiver and the input end of the power amplification module, and the output port is respectively connected with the output end of the power amplification module and the antenna.

7. The radio frequency transmission module according to any one of claims 1 to 4, wherein the power amplification module and the switching module constitute a third transmission circuit;

the third transmitting circuit is configured with a third power port, a controlled port, an input port and an output port, wherein the third power port is respectively connected with the power module, the first end of the switch module and the acquisition end of the acquisition module, the controlled port is respectively connected with the controlled end of the switch module and the output end of the acquisition module, the input port is respectively connected with the radio frequency transceiver and the input end of the power amplification module, and the output port is respectively connected with the output end of the power amplification module and the antenna.

8. The radio frequency transmission module according to any one of claims 1-4, further comprising:

the temperature detection module is used for detecting temperature information of the power amplification module;

the processing module is respectively connected with the controlled end of the switch module and the power amplification module and is used for acquiring the temperature information of the temperature detection module when the switch module is detected to be kept in a conducting state within a preset time, and controlling the power amplification module to adjust the amplification power when the temperature information meets a preset temperature condition.

9. The method for protecting the radio frequency transmitting module is characterized by comprising the following steps of:

10. A communication device, comprising:

The radio frequency transmission module of any of claims 1-8.

11. A communication device, comprising:

a memory storing a computer program and a processor implementing the steps of the protection method according to claim 9 when the processor executes the computer program.

12. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the protection method as claimed in claim 9.