CN109768810B - Signal processing circuit, terminal equipment and signal processing method - Google Patents
Signal processing circuit, terminal equipment and signal processing method Download PDFInfo
- Publication number
- CN109768810B CN109768810B CN201910171078.2A CN201910171078A CN109768810B CN 109768810 B CN109768810 B CN 109768810B CN 201910171078 A CN201910171078 A CN 201910171078A CN 109768810 B CN109768810 B CN 109768810B
- Authority
- CN
- China
- Prior art keywords
- frequency band
- frequency
- signal
- target uplink
- signal processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Transceivers (AREA)
Abstract
The invention provides a signal processing circuit, a terminal device and a signal processing method, wherein the signal processing circuit comprises a processor, an LTE radio frequency transceiver circuit and a 5G radio frequency transceiver circuit, the LTE radio frequency transceiver circuit comprises a notch module, and the notch module is used for filtering a signal of a target uplink working frequency in a first frequency band, wherein twice of the target uplink working frequency in the first frequency band is equal to a downlink working frequency in a second frequency band, the first frequency band and the second frequency band are not overlapped, the first frequency band is a working frequency band of the LTE radio frequency transceiver circuit, and the second frequency band is a working frequency band of the 5G radio frequency transceiver circuit. Therefore, the influence on the receiving performance of the 5G system can be eliminated by filtering the signal of the target uplink working frequency in the first frequency band.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a signal processing circuit, a terminal device, and a signal processing method.
Background
With the rapid development of terminal technology, terminal equipment has become an essential tool in people's life, and brings great convenience to various aspects of user's life. With the rapid development of network technology, in order to pursue higher speed, lower delay and higher reliability, 5G and Long Term Evolution (LTE) are widely applied to the life of users.
However, in the prior art, the second harmonic generated by the LTE one-band transmission may fall within one receiving band of the 5G system, thereby affecting the receiving performance of the 5G system.
Disclosure of Invention
The embodiment of the invention provides a signal processing circuit, terminal equipment and a signal processing method, and aims to solve the problem that the receiving performance of a 5G system is influenced because second harmonic generated by one-frequency-band transmission of LTE (Long term evolution) of the terminal equipment falls into one receiving frequency band of the 5G system.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a signal processing circuit, including a processor, an LTE radio frequency transceiver circuit, and a 5G radio frequency transceiver circuit, where the LTE radio frequency transceiver circuit includes a notch module, and the notch module is configured to filter a signal of a target uplink operating frequency in a first frequency band, where twice the target uplink operating frequency in the first frequency band is equal to a downlink operating frequency in a second frequency band, the first frequency band and the second frequency band are not overlapped, the first frequency band is an operating frequency band of the LTE radio frequency transceiver circuit, and the second frequency band is an operating frequency band of the 5G radio frequency transceiver circuit.
In a second aspect, an embodiment of the present invention further provides a terminal device, which includes the signal processing circuit.
In a third aspect, an embodiment of the present invention further provides a signal processing method, which is applied to the terminal device, where the method includes:
the signal of the target uplink working frequency in the first frequency band is filtered, wherein the two times of the target uplink working frequency in the first frequency band is equal to the downlink working frequency in the second frequency band, the first frequency band is not overlapped with the second frequency band, the first frequency band is the working frequency band of the LTE radio frequency transceiver circuit, and the second frequency band is the working frequency band of the 5G radio frequency transceiver circuit.
In a fourth aspect, an embodiment of the present invention further provides a terminal device, which includes a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the signal processing method.
In a fifth aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the steps of the signal processing method.
The signal processing circuit comprises a processor, an LTE radio frequency transceiver circuit and a 5G radio frequency transceiver circuit, wherein the LTE radio frequency transceiver circuit comprises a notch module, and the notch module is used for filtering a signal of a target uplink working frequency in a first frequency band, wherein twice of the target uplink working frequency in the first frequency band is equal to a downlink working frequency in a second frequency band, the first frequency band and the second frequency band are not overlapped, the first frequency band is a working frequency band of the LTE radio frequency transceiver circuit, and the second frequency band is a working frequency band of the 5G radio frequency transceiver circuit. Therefore, the influence on the receiving performance of the 5G system can be eliminated by filtering the signal of the target uplink working frequency in the first frequency band.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a block diagram of a signal processing circuit provided in an embodiment of the present invention;
FIG. 2 is a block diagram of a notching module provided by an embodiment of the present invention;
fig. 3 is a flowchart of a signal processing method according to an embodiment of the present invention;
fig. 4 is a structural diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a structural diagram of a signal processing circuit according to an embodiment of the present invention, and as shown in fig. 1, the signal processing circuit includes a processor 1, an LTE radio frequency transceiver circuit 2, and a 5G radio frequency transceiver circuit 3, where the LTE radio frequency transceiver circuit 2 includes a notch module 21, and the notch module 21 is configured to filter a signal of a target uplink operating frequency in a first frequency band, where twice the target uplink operating frequency in the first frequency band is equal to a downlink operating frequency in a second frequency band, the first frequency band is not overlapped with the second frequency band, the first frequency band is an operating frequency band of the LTE radio frequency transceiver circuit 2, and the second frequency band is an operating frequency band of the 5G radio frequency transceiver circuit 3.
In this embodiment, the LTE rf transceiver 22 of the LTE rf transceiver circuit 2 is connected to the processor 1, and the 5G NR rf transceiver of the 5G rf transceiver circuit 3 is connected to the processor 1, and these connection relationships are the same as those in the prior art, and are not described herein again. The first frequency band may be a B1 frequency band, and may be a B3 frequency band. The second frequency band may be an N77 frequency band, and may be an N78 frequency band.
In this embodiment, the 5G rf transceiver circuit 3 is a circuit included by an upper dotted line in fig. 1. The 5G rf transceiver circuit 9 includes a 5G NR rf transceiver, a power amplifier, a filter, an rf switch, a coupler, and an antenna, and the connection relationship between these devices can be understood with reference to fig. 1, and will not be described herein.
In this embodiment, twice the target uplink operating frequency in the first frequency band is equal to the downlink operating frequency in the second frequency band, and the first frequency band and the second frequency band are not overlapped with each other. The LTE radio frequency transceiver circuit 2 includes a notch module 21, so that the notch module 21 is configured to filter a signal of a target uplink operating frequency in a first frequency band (for example, filter the signal through notch processing), so as to prevent a second harmonic generated by a frequency band transmission of LTE from falling into a receiving frequency band of the 5G system, and eliminate an influence on a receiving performance of the 5G system.
Optionally, the LTE radio frequency transceiver circuit 2 further includes an LTE radio frequency transceiver 22, a power amplifier 23, a notch module 21, a duplexer 24, a radio frequency switch 25, a coupler 26, and an antenna 27; the output end of the LTE radio frequency transceiver 22 is connected with the input end of the power amplifier 23; the output end of the power amplifier 23 is connected with the input end of the notch module 21; the output end of the notch module 21 is connected with the first end of the duplexer 24, and the control end of the notch module 21 is connected with the processor 1; a second end of the duplexer 24 is connected to a first input end of the LTE radio frequency transceiver 22, and a third end of the duplexer 24 is connected to a first end of the radio frequency switch 25; a second terminal of the rf switch 25 is connected to a first terminal of the coupler 26; a second end of the coupler 26 is connected to a second input end of the LTE radio frequency transceiver 22, and a third end of the coupler 26 is connected to the antenna 27; the 5G radio frequency transceiving circuit 3 is connected with the processor 1.
In this embodiment, referring to fig. 1 again, the control end of the notch module 21 is connected to the processor 1, so that the notch module 21 filters the signal of the target uplink operating frequency in the first frequency band when the control end receives the voltage control signal sent by the processor 1. In this way, the notch module 21 is configured to filter a signal of a target uplink operating frequency in the first frequency band, so as to prevent a second harmonic generated by a frequency band transmission of the LTE from falling into a receiving frequency band of the 5G system, and eliminate an influence on a receiving performance of the 5G system.
Optionally, the first frequency band is a B3 frequency band, and the second frequency band is an N77 or N78 frequency band.
In this embodiment, the uplink frequency range of the B3 band is 1710 to 1785MHz, and the downlink frequency range of the B3 band is 2110 to 2170 MHz. The uplink frequency range and the downlink frequency range of the N77 frequency band are both 3300-4200 MHz. The uplink frequency range and the downlink frequency range of the N78 frequency band are both 3300-3800 MHz.
In this embodiment, the first frequency band is a B3 frequency band, and the second frequency band is an N77 or N78 frequency band, so that the second harmonic generated by the transmission in the B3 frequency band can be prevented from falling into the receiving frequency band of N77 or N78, and the influence of the second harmonic generated by the transmission in the B3 frequency band on the receiving performance of the N77 frequency band is eliminated.
Optionally, when the enable end of the notch module 21 receives a high-level signal, the notch module 21 is configured to filter a signal of the target uplink operating frequency in the first frequency band;
in the case that the enable end of the notch module 21 receives a low-level signal, the notch module 21 is configured to transmit the signal of the target uplink operating frequency in the first frequency band to the duplexer 24.
In this embodiment, for better understanding of the above process, reference may be made to fig. 2, where fig. 2 is a structural diagram of a notch module provided in an embodiment of the present invention. As shown in FIG. 2, notch module 21 includes an input terminal 211, an output terminal 212, a control terminal 213, and an enable terminal 214.
In this embodiment, when the enable end 214 of the notch module 21 receives a high-level signal, the notch module 21 is configured to filter the signal of the target uplink operating frequency in the first frequency band. When the enable terminal 214 of the notch module 21 receives the high level signal, the variable capacitor inside the notch module 21 may be adjusted according to the input voltage of the control terminal 213, so as to change the resonant frequency of the notch network, and may filter the signal of the target uplink operating frequency in the first frequency band.
In this embodiment, when the enable terminal 214 of the notch module 21 receives a low-level signal, the notch module 21 is configured to transmit the signal of the target uplink operating frequency in the first frequency band to the duplexer 24. When the enable terminal 214 of the notch module 21 receives a low level signal, the notch module 21 is equivalent to a through state, and the insertion loss is small.
It should be noted that the high-level signal or the low-level signal received by the enable terminal 214 of the notch module 21 may be a signal transmitted by the processor 1, or may be a signal transmitted by a single control module, and the like, and the present embodiment is not limited thereto.
In this way, different processing can be performed on the signal of the target uplink operating frequency in the first frequency band under the condition that the enable end of the notch module 21 receives different signals, so that whether filtering is performed or not can be selected according to actual conditions, and the flexibility of the signal processing circuit is improved.
Optionally, the notch module 21 is configured to filter the signal of the target uplink operating frequency in the first frequency band when the transmission power of the first frequency band is greater than a preset threshold.
In this embodiment, only when the transmission power of the first frequency band is greater than the preset threshold, the second harmonic generated by the signal of the uplink operating frequency of the first frequency band may fall into the downlink operating frequency of the second frequency band. When the transmitting power of the first frequency band is less than or equal to the preset threshold, the notch module 21 may be configured to transmit the signal of the target uplink operating frequency in the first frequency band to the duplexer 24 without filtering.
In this way, when the transmitting power of the first frequency band is less than or equal to the preset threshold, the notch module 21 is configured to transmit the signal of the target uplink operating frequency in the first frequency band to the duplexer 24 without filtering, without acquiring the downlink operating frequency in the second frequency band. Only when the transmission power of the first frequency band is greater than a preset threshold, the notch module 21 is configured to filter the signal of the target uplink operating frequency in the first frequency band.
Optionally, when the control end of the notch module 21 receives a voltage control signal, the notch module 21 is configured to filter a signal of the target uplink operating frequency in the first frequency band, and a voltage of the voltage control signal is matched with the target uplink operating frequency in the first frequency band.
In this embodiment, it can be understood that the voltage of the voltage control signal matches the target uplink operating frequency in the first frequency band. The terminal device may store a correspondence table between the uplink operating frequency in the first frequency band and the voltage of the voltage control signal, search the control voltage corresponding to the target uplink operating frequency in the correspondence table, and send the voltage control signal with the voltage as the control voltage to the control end of the notch module 21 by the processor. The variable capacitance in the trap module 21 can be adjusted according to the voltage of the voltage control signal, so as to adjust the resonant frequency at different operating frequencies, and filter the signal of the target uplink operating frequency in the first frequency band. Thus, by controlling the voltage control signal, the notch module 21 can accurately filter the signal of the target uplink operating frequency in the first frequency band. In addition, the variable capacitance in the notch module 21 is adjusted through the target uplink working frequency, so that the problem that the bandwidth of the LC notch network is narrow is solved, and the suppression effect on harmonic waves is improved.
It should be noted that the above embodiments may be implemented alone or in combination, and the embodiments of the present invention are not limited thereto.
The invention discloses a signal processing circuit, which comprises a processor 1, an LTE radio frequency transceiver circuit 2 and a 5G radio frequency transceiver circuit 3, wherein the LTE radio frequency transceiver circuit 2 comprises a notch module 21, and the notch module 21 is used for filtering a signal of a target uplink working frequency in a first frequency band, wherein twice of the target uplink working frequency in the first frequency band is equal to a downlink working frequency in a second frequency band, the first frequency band and the second frequency band are not overlapped, the first frequency band is a working frequency band of the LTE radio frequency transceiver circuit 2, and the second frequency band is a working frequency band of the 5G radio frequency transceiver circuit 3. Therefore, the influence on the receiving performance of the 5G system can be eliminated by filtering the signal of the target uplink working frequency in the first frequency band.
The embodiment of the invention also provides terminal equipment which comprises the signal processing circuit.
In this embodiment, the terminal Device may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or the like.
Referring to fig. 3, fig. 3 is a flowchart of a signal processing method according to an embodiment of the present invention, and the signal processing method is applied to the terminal device. As shown in fig. 3, the signal processing method includes the steps of:
In this embodiment, the first frequency band may be a B1 frequency band, and may be a B3 frequency band. The second frequency band may be an N77 frequency band, and may be an N78 frequency band. Twice of the target uplink working frequency in the first frequency band is equal to the downlink working frequency in the second frequency band, the first frequency band and the second frequency band are not overlapped, the first frequency band is the working frequency band of the LTE radio frequency transceiver circuit, and the second frequency band is the working frequency band of the 5G radio frequency transceiver circuit. Therefore, signals of the target uplink working frequency in the first frequency band are filtered, so that second harmonics generated by one-frequency-band transmission of the LTE can be prevented from falling into one receiving frequency band of the 5G system, and the influence on the receiving performance of the 5G system can be eliminated.
Optionally, the first frequency band is a B3 frequency band, and the second frequency band is an N77 or N78 frequency band.
Optionally, the filtering the signal of the target uplink operating frequency in the first frequency band includes:
under the condition that an enabling end of the notch module receives a high-level signal, filtering a signal of the target uplink working frequency in the first frequency band;
and transmitting the signal of the target uplink working frequency in the first frequency band to a duplexer under the condition that an enabling end of the notch module receives a low-level signal.
Optionally, the filtering the signal of the target uplink operating frequency in the first frequency band includes:
and under the condition that the transmitting power of the first frequency band is greater than a preset threshold value, filtering the signal of the target uplink working frequency in the first frequency band.
In this embodiment, when the transmission power of the first frequency band is less than or equal to a preset threshold, the signal of the target uplink operating frequency in the first frequency band may be transmitted to the duplexer without filtering.
Optionally, the filtering the signal of the target uplink operating frequency in the first frequency band includes:
and under the condition that a control end of the notch module receives a voltage control signal, filtering the signal of the target uplink working frequency in the first frequency band, wherein the voltage of the voltage control signal is matched with the target uplink working frequency in the first frequency band.
The above embodiments have been explained and illustrated in detail in the embodiments of the signal processing circuit, and are not described again. It should be noted that the above embodiments may be implemented individually or in combination. For example, when the terminal device registers the network or the network information changes, it is determined whether the uplink of the current terminal device is working in the B3 frequency band, and whether the downlink is working in the N77 or N78 frequency band. If yes, reading the transmitting power of the current B3 frequency band, and judging whether the transmitting power is larger than a preset threshold P1. Under the condition that the transmitting power of the B3 frequency band is greater than a preset threshold P1, recording that the uplink working frequency of B3 is Freq _ UL and the downlink working frequency of the N77 or N78 frequency band is Freq _ DL, and calculating whether twice of Freq _ UL is equal to Freq _ DL or not. If two times Freq _ UL is equal to Freq _ DL in the correspondence table between Freq _ UL and control voltage stored in the terminal device, an enable signal is generated to control the switching of the notch module 21. Meanwhile, the control voltage corresponding to the current Freq _ UL can be searched in a corresponding relation table of the Freq _ UL and the control voltage stored in the terminal device, and the control voltage is used for adjusting the variable capacitance in the trap module 21, so that the resonance frequency under different working frequencies is adjusted, and the signal of the target uplink working frequency in the first frequency band is filtered.
Therefore, by adding the notch module 21 to the B3 path, the operating state of the notch module 21 is controlled by judging whether the terminal device operates in the B3 band and the N77 or N78 band dual-connection state, and the magnitude of the B3 band transmitting power, so as to solve the influence of the harmonic wave of the B3 band on the performance of the N77 or N78 receiving band. And the problem of increased power consumption of the B3 frequency band caused by increased filter insertion loss under the conventional operating condition of only the B3 frequency band can be solved. The trap module 21 is started by judging whether the working frequency band of the terminal equipment meets the coexistence condition, so that coexistence interference can be avoided, and the trap module is closed under other conditions, so that link insertion loss is reduced, and the purpose of reducing power consumption is achieved.
The signal processing method filters a signal of a target uplink working frequency in a first frequency band, wherein twice of the target uplink working frequency in the first frequency band is equal to a downlink working frequency in a second frequency band, the first frequency band and the second frequency band are not overlapped, the first frequency band is a working frequency band of an LTE radio frequency transceiver circuit, and the second frequency band is a working frequency band of a 5G radio frequency transceiver circuit. Therefore, the influence on the receiving performance of the 5G system can be eliminated by filtering the signal of the target uplink working frequency in the first frequency band.
Referring to fig. 4, fig. 4 is a schematic diagram of a hardware structure of a terminal device for implementing various embodiments of the present invention, where the terminal device 400 includes, but is not limited to: radio frequency unit 401, network module 402, audio output unit 403, input unit 404, sensor 405, display unit 406, user input unit 407, interface unit 408, memory 409, processor 410, and power supply 411. Those skilled in the art will appreciate that the terminal device configuration shown in fig. 4 does not constitute a limitation of the terminal device, and that the terminal device may include more or fewer components than shown, or combine certain components, or a different arrangement of components. In the embodiment of the present invention, the terminal device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The processor 410 is configured to control the notch module to filter a signal of a target uplink operating frequency in a first frequency band, where twice the target uplink operating frequency in the first frequency band is equal to a downlink operating frequency in a second frequency band, the first frequency band is not overlapped with the second frequency band, the first frequency band is an operating frequency band of the LTE radio frequency transceiver circuit, and the second frequency band is an operating frequency band of the 5G radio frequency transceiver circuit. Therefore, the influence on the receiving performance of the 5G system can be eliminated by filtering the signal of the target uplink working frequency in the first frequency band.
Optionally, the first frequency band is a B3 frequency band, and the second frequency band is an N77 or N78 frequency band.
Optionally, the processor 410 is further configured to control the notch module to filter the signal of the target uplink operating frequency in the first frequency band when the enable end of the notch module receives a high-level signal; and under the condition that an enabling end of the notch module receives a low-level signal, controlling the notch module to transmit the signal of the target uplink working frequency in the first frequency band to the duplexer.
Optionally, the processor 410 is further configured to control the notch module to filter the signal of the target uplink operating frequency in the first frequency band when the transmission power of the first frequency band is greater than a preset threshold.
Optionally, the processor 410 is further configured to, when the control end of the notch module receives a voltage control signal, control the notch module to filter a signal of the target uplink operating frequency in the first frequency band, where a voltage of the voltage control signal is matched with the target uplink operating frequency in the first frequency band.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 401 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 410; in addition, the uplink data is transmitted to the base station. Typically, radio unit 401 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio unit 401 can also communicate with a network and other devices through a wireless communication system.
The terminal device provides wireless broadband internet access to the user through the network module 402, such as helping the user send and receive e-mails, browse web pages, and access streaming media.
The audio output unit 403 may convert audio data received by the radio frequency unit 401 or the network module 402 or stored in the memory 409 into an audio signal and output as sound. Also, the audio output unit 403 may also provide audio output related to a specific function performed by the terminal apparatus 400 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 403 includes a speaker, a buzzer, a receiver, and the like.
The input unit 404 is used to receive audio or video signals. The input Unit 404 may include a Graphics Processing Unit (GPU) 4041 and a microphone 4042, and the Graphics processor 4041 processes image data of a still picture or video obtained by an image capturing apparatus (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 406. The image frames processed by the graphic processor 4041 may be stored in the memory 409 (or other storage medium) or transmitted via the radio frequency unit 401 or the network module 402. The microphone 4042 may receive sound, and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 401 in case of the phone call mode.
The terminal device 400 further comprises at least one sensor 405, such as light sensors, motion sensors and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 4061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 4061 and/or the backlight when the terminal apparatus 400 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal device posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 405 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be described in detail herein.
The display unit 406 is used to display information input by the user or information provided to the user. The Display unit 406 may include a Display panel 4061, and the Display panel 4061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 407 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal device. Specifically, the user input unit 407 includes a touch panel 4071 and other input devices 4072. Touch panel 4071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 4071 using a finger, a stylus, or any suitable object or attachment). The touch panel 4071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 410, receives a command from the processor 410, and executes the command. In addition, the touch panel 4071 can be implemented by using various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 4071, the user input unit 407 may include other input devices 4072. Specifically, the other input devices 4072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 4071 can be overlaid on the display panel 4061, and when the touch panel 4071 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 410 to determine the type of the touch event, and then the processor 410 provides a corresponding visual output on the display panel 4061 according to the type of the touch event. Although in fig. 4, the touch panel 4071 and the display panel 4061 are two independent components to implement the input and output functions of the terminal device, in some embodiments, the touch panel 4071 and the display panel 4061 may be integrated to implement the input and output functions of the terminal device, which is not limited herein.
The interface unit 408 is an interface for connecting an external device to the terminal apparatus 400. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 408 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal apparatus 400 or may be used to transmit data between the terminal apparatus 400 and an external device.
The memory 409 may be used to store software programs as well as various data. The memory 409 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 409 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 410 is a control center of the terminal device, connects various parts of the entire terminal device by using various interfaces and lines, and performs various functions of the terminal device and processes data by operating or executing software programs and/or modules stored in the memory 409 and calling data stored in the memory 409, thereby performing overall monitoring of the terminal device. Processor 410 may include one or more processing units; preferably, the processor 410 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 410.
The terminal device 400 may further include a power supply 411 (e.g., a battery) for supplying power to various components, and preferably, the power supply 411 may be logically connected to the processor 410 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.
In addition, the terminal device 400 includes some functional modules that are not shown, and are not described in detail herein.
Preferably, an embodiment of the present invention further provides a terminal device, which includes a processor 410, a memory 409, and a computer program that is stored in the memory 409 and can be run on the processor 410, and when being executed by the processor 410, the computer program implements each process of the signal processing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the signal processing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (14)
1. A signal processing circuit is characterized by comprising a processor, an LTE radio frequency transceiver circuit and a 5G radio frequency transceiver circuit, wherein the LTE radio frequency transceiver circuit comprises a trap module, an LTE radio frequency transceiver, a power amplifier, a duplexer, a radio frequency switch, a coupler and an antenna, the trap module is used for filtering signals of a target uplink working frequency in a first frequency band, wherein twice of the target uplink working frequency in the first frequency band is equal to a downlink working frequency in a second frequency band, the first frequency band is not overlapped with the second frequency band, the first frequency band is the working frequency band of the LTE radio frequency transceiver circuit, and the second frequency band is the working frequency band of the 5G radio frequency transceiver circuit;
when the transmitting power of the first frequency band is greater than a preset threshold, an enabling end of the notch module receives a high-level signal, and the notch module is used for filtering a signal of the target uplink working frequency in the first frequency band;
and under the condition that the transmitting power of the first frequency band is less than or equal to a preset threshold value, the enabling end of the notch module receives a low-level signal, and the notch module is used for transmitting the signal of the target uplink working frequency in the first frequency band to the duplexer without filtering.
2. The signal processing circuit of claim 1, wherein an output of the LTE radio frequency transceiver is connected to an input of the power amplifier;
the output end of the power amplifier is connected with the input end of the trap module;
the output end of the trap module is connected with the first end of the duplexer, and the control end of the trap module is connected with the processor;
the second end of the duplexer is connected with the first input end of the LTE radio frequency transceiver, and the third end of the duplexer is connected with the first end of the radio frequency switch;
the second end of the radio frequency switch is connected with the first end of the coupler;
the second end of the coupler is connected with the second input end of the LTE radio frequency transceiver, and the third end of the coupler is connected with the antenna;
the 5G radio frequency transceiving circuit is connected with the processor.
3. The signal processing circuit of claim 2, wherein the first frequency band is a B3 frequency band, and the second frequency band is an N77 or N78 frequency band.
4. The signal processing circuit of claim 2, wherein when the enable terminal of the notch module receives a high-level signal, the variable capacitor inside the notch module is adjusted according to the input voltage of the control terminal, so as to change the resonant frequency of the notch network, and filter the signal of the target uplink operating frequency in the first frequency band.
5. The signal processing circuit of claim 2, wherein the notch module is configured to filter the signal of the target uplink operating frequency in the first frequency band if a voltage control signal is received at the control end of the notch module, and a voltage of the voltage control signal matches the target uplink operating frequency in the first frequency band.
6. The circuit of claim 4 or 5, wherein a correspondence table between the uplink operating frequency in the first frequency band and the voltage of the voltage control signal is stored in the terminal device, and the control voltage corresponding to the target uplink operating frequency is looked up in the correspondence table, and the processor sends the voltage control signal with the voltage of the control voltage to the control terminal of the notch module, and adjusts the variable capacitor inside the notch module according to the voltage of the voltage control signal, so as to adjust the resonant frequency at different operating frequencies, and filter the signal of the target uplink operating frequency in the first frequency band.
7. A terminal device, characterized in that it comprises a signal processing circuit according to any one of claims 1 to 6.
8. A signal processing method applied to the terminal device of claim 7, the method comprising:
the signal of the target uplink working frequency in the first frequency band is filtered, wherein the two times of the target uplink working frequency in the first frequency band is equal to the downlink working frequency in the second frequency band, the first frequency band is not overlapped with the second frequency band, the first frequency band is the working frequency band of the LTE radio frequency transceiver circuit, and the second frequency band is the working frequency band of the 5G radio frequency transceiver circuit.
9. The method of claim 8, wherein the first frequency band is a B3 frequency band, and wherein the second frequency band is an N77 or N78 frequency band.
10. The method according to claim 8 or 9, wherein the filtering the signal of the target uplink operating frequency in the first frequency band comprises:
under the condition that an enabling end of the notch module receives a high-level signal, filtering a signal of the target uplink working frequency in the first frequency band;
and transmitting the signal of the target uplink working frequency in the first frequency band to a duplexer under the condition that an enabling end of the notch module receives a low-level signal.
11. The method according to claim 8 or 9, wherein the filtering the signal of the target uplink operating frequency in the first frequency band comprises:
and under the condition that the transmitting power of the first frequency band is greater than a preset threshold value, filtering the signal of the target uplink working frequency in the first frequency band.
12. The method according to claim 8 or 9, wherein the filtering the signal of the target uplink operating frequency in the first frequency band comprises:
and under the condition that a control end of the notch module receives a voltage control signal, filtering the signal of the target uplink working frequency in the first frequency band, wherein the voltage of the voltage control signal is matched with the target uplink working frequency in the first frequency band.
13. A terminal device, characterized in that it comprises a processor, a memory and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, implements the steps of the signal processing method according to any one of claims 8 to 12.
14. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the signal processing method according to any one of claims 8 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171078.2A CN109768810B (en) | 2019-03-07 | 2019-03-07 | Signal processing circuit, terminal equipment and signal processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171078.2A CN109768810B (en) | 2019-03-07 | 2019-03-07 | Signal processing circuit, terminal equipment and signal processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109768810A CN109768810A (en) | 2019-05-17 |
| CN109768810B true CN109768810B (en) | 2021-01-08 |
Family
ID=66457938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910171078.2A Active CN109768810B (en) | 2019-03-07 | 2019-03-07 | Signal processing circuit, terminal equipment and signal processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109768810B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110166065A (en) * | 2019-05-24 | 2019-08-23 | 维沃移动通信有限公司 | Signal processing method, network collocating method and relevant device |
| CN110138411A (en) * | 2019-05-31 | 2019-08-16 | 维沃移动通信有限公司 | Radio circuit, signal processing method, device and terminal |
| CN110311705A (en) * | 2019-06-28 | 2019-10-08 | 维沃移动通信有限公司 | A kind of signal processing circuit, terminal device and signal processing method |
| CN110730017A (en) * | 2019-09-25 | 2020-01-24 | 维沃移动通信有限公司 | Radio frequency device, control method thereof and terminal equipment |
| CN110868757B (en) * | 2019-11-21 | 2024-04-09 | 维沃移动通信有限公司 | Information transmission method and device and electronic equipment |
| CN110971335B (en) * | 2019-11-25 | 2023-12-22 | 维沃移动通信有限公司 | Signal processing method and device and electronic equipment |
| CN111082814A (en) * | 2019-12-13 | 2020-04-28 | 惠州Tcl移动通信有限公司 | Method and device for downlink signal transmission in dual-connection architecture, and terminal |
| CN112532270B (en) * | 2020-10-28 | 2022-11-01 | 深圳市锐尔觅移动通信有限公司 | Radio frequency circuit, terminal equipment and radio frequency signal processing method |
| CN112953592B (en) * | 2021-01-22 | 2023-04-07 | RealMe重庆移动通信有限公司 | Radio frequency circuit, electronic equipment and transmission method of radio frequency signal |
| CN113765536A (en) * | 2021-08-23 | 2021-12-07 | 展讯通信（深圳）有限公司 | Radio frequency circuit and radio frequency signal transmission method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8149896B2 (en) * | 2006-01-04 | 2012-04-03 | Qualcomm, Incorporated | Spur suppression for a receiver in a wireless communication system |
| CN1889400A (en) * | 2006-08-07 | 2007-01-03 | Ut斯达康通讯有限公司 | Multi-mode cell phone capable of suppressing PHS mode radio frequency interference |
| CN102404271B (en) * | 2011-11-23 | 2015-07-15 | 广东盛路通信科技股份有限公司 | Device and method for narrowband interference suppression of OFDM (orthogonal frequency division multiplexing) receiver |
| US9203451B2 (en) * | 2011-12-14 | 2015-12-01 | Infineon Technologies Ag | System and method for an RF receiver |
| CN203135865U (en) * | 2013-03-20 | 2013-08-14 | 东莞宇龙通信科技有限公司 | Mobile terminal for alleviating interference of LTE (Long Term Evolution) emission in GPS (Global Position System) |
-
2019
- 2019-03-07 CN CN201910171078.2A patent/CN109768810B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109768810A (en) | 2019-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109768810B (en) | Signal processing circuit, terminal equipment and signal processing method | |
| CN108347759B (en) | Anti-interference method of flexible screen and mobile terminal | |
| CN108459797B (en) | Control method of folding screen and mobile terminal | |
| CN111565078B (en) | Channel detection method in frequency division duplex mode, radio frequency circuit and electronic equipment | |
| CN110289883B (en) | Radio frequency circuit, terminal equipment and circuit control method | |
| CN109819450B (en) | Signal receiving method, device and terminal | |
| CN108572767B (en) | Method for determining external object position and mobile terminal | |
| CN110855313B (en) | Signal control method and electronic equipment | |
| CN110266323B (en) | Signal control circuit, terminal equipment and signal control method | |
| CN109739394B (en) | SAR value processing method and mobile terminal | |
| CN108832297B (en) | Antenna working method and mobile terminal | |
| CN110798235A (en) | Terminal control method and electronic equipment | |
| CN111093137B (en) | Volume control method, volume control equipment and computer readable storage medium | |
| CN110099434B (en) | Power adjustment method, terminal equipment and computer readable storage medium | |
| CN110601715A (en) | Radio frequency circuit, terminal equipment and circuit control method | |
| CN109669656B (en) | Information display method and terminal equipment | |
| CN111050410A (en) | Antenna control method and electronic equipment | |
| CN108170310B (en) | Touch screen control method and mobile terminal | |
| CN110636530B (en) | Method for processing adjacent channel interference and terminal equipment | |
| CN109586030B (en) | Mobile terminal and antenna control method | |
| CN109526035B (en) | Communication method, mobile terminal and medium | |
| CN108924319B (en) | Proximity detection method and mobile terminal | |
| CN109450508B (en) | Antenna determination method and device and mobile terminal | |
| CN109067429B (en) | Control method and terminal equipment | |
| CN110851219A (en) | Information processing method and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |