CN110601715A - Radio frequency circuit, terminal equipment and circuit control method - Google Patents
Radio frequency circuit, terminal equipment and circuit control method Download PDFInfo
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- CN110601715A CN110601715A CN201910911591.0A CN201910911591A CN110601715A CN 110601715 A CN110601715 A CN 110601715A CN 201910911591 A CN201910911591 A CN 201910911591A CN 110601715 A CN110601715 A CN 110601715A
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- Prior art keywords
- radio frequency
- combiner
- circuit
- electronic switch
- modem
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Abstract
The invention provides a radio frequency circuit, a terminal device and a circuit control method, wherein the radio frequency circuit comprises a Wi-Fi radio frequency access, an NR radio frequency access and a control sub-circuit, wherein: the Wi-Fi radio frequency path comprises a first combiner, a coupler and an antenna, wherein the first combiner is connected with the antenna through the coupler; the NR radio frequency path comprises an NR modem, a filter, an electronic switch and a second combiner, wherein a first contact of the electronic switch is connected with the input end of the filter, a second contact of the electronic switch is connected with the receiving end of the NR modem, and a common end of the electronic switch is connected with a first end of the second combiner; the first end of the control sub-circuit is connected with the coupling end of the coupler, and the second end of the control sub-circuit is connected with the control end of the electronic switch. The embodiment of the invention can reduce the influence of the Wi-Fi radio frequency channel on the radio frequency signal received by the NR radio frequency channel.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a radio frequency circuit, a terminal device, and a circuit control 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. The Radio frequency circuit of the terminal device may include a Wi-Fi Radio frequency path and an NR (New Radio, New air interface) Radio frequency path, and the presence of the Wi-Fi Radio frequency path and the NR Radio frequency path may enable the terminal device to adapt to more different communication environments.
However, in the prior art, when the Wi-Fi radio frequency channel transmits a radio frequency signal, the radio frequency signal received by the NR radio frequency channel is greatly affected.
Disclosure of Invention
The embodiment of the invention provides a radio frequency circuit, terminal equipment and a circuit control method, which aim to solve the problem that when a Wi-Fi radio frequency channel transmits a radio frequency signal, the radio frequency signal received by an NR radio frequency channel is greatly influenced.
In a first aspect, an embodiment of the present invention provides a radio frequency circuit, including a Wi-Fi radio frequency path, an NR radio frequency path, and a control sub-circuit, where:
the Wi-Fi radio frequency path comprises a first combiner, a coupler and an antenna, wherein the first combiner is connected with the antenna through the coupler;
the NR radio frequency path comprises an NR modem, a filter, an electronic switch and a second combiner, wherein a first contact of the electronic switch is connected with the input end of the filter, a second contact of the electronic switch is connected with the receiving end of the NR modem, and a common end of the electronic switch is connected with a first end of the second combiner;
the first end of the control sub-circuit is connected with the coupling end of the coupler, and the second end of the control sub-circuit is connected with the control end of the electronic switch.
In a second aspect, an embodiment of the present invention further provides a terminal device, which includes the radio frequency circuit.
In a third aspect, an embodiment of the present invention further provides a circuit control method, which is applied to the terminal device, where the method includes:
detecting the transmitting power of a Wi-Fi radio frequency channel;
and according to the transmitting power, connecting the first end of the combiner of the NR radio frequency path with the input end of the NR modem, or connecting the first end of the combiner of the NR radio frequency path with the input end of the filter.
In a fourth aspect, an embodiment of the present invention further provides a terminal device, where the terminal device includes a Wi-Fi radio frequency path and an NR radio frequency path, and the terminal device includes:
the detection module is used for detecting the transmitting power of the Wi-Fi radio frequency channel;
and the connecting module is used for connecting the first end of the combiner of the NR radio frequency path with the input end of the NR modem or connecting the first end of the combiner of the NR radio frequency path with the input end of the filter according to the transmitting power.
In a fifth aspect, an embodiment of the present invention further provides a terminal device, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the circuit control method.
In a sixth 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 steps of the above circuit control method are implemented.
The radio frequency circuit of the embodiment of the invention comprises a Wi-Fi radio frequency access, an NR radio frequency access and a control sub-circuit, wherein: the Wi-Fi radio frequency path comprises a first combiner, a coupler and an antenna, wherein the first combiner is connected with the antenna through the coupler; the NR radio frequency path comprises an NR modem, a filter, an electronic switch and a second combiner, wherein a first contact of the electronic switch is connected with the input end of the filter, a second contact of the electronic switch is connected with the receiving end of the NR modem, and a common end of the electronic switch is connected with a first end of the second combiner; the first end of the control sub-circuit is connected with the coupling end of the coupler, and the second end of the control sub-circuit is connected with the control end of the electronic switch. The embodiment of the invention can reduce the influence of the Wi-Fi radio frequency channel on the radio frequency signal received by the NR radio frequency channel.
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 radio frequency circuit according to an embodiment of the present invention;
FIG. 2 is a second block diagram of a radio frequency circuit according to an embodiment of the present invention;
FIG. 3 is a block diagram of a diode detector circuit provided by an embodiment of the present invention;
FIG. 4 is a flow chart of a circuit control method provided by an embodiment of the invention;
fig. 5 is one of the structural diagrams of the terminal device provided in the embodiment of the present invention;
fig. 6 is a structural diagram of a connection module of a terminal device according to an embodiment of the present invention;
fig. 7 is a second 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 radio frequency circuit provided in an embodiment of the present invention, and as shown in fig. 1, the radio frequency circuit includes a Wi-Fi radio frequency path, an NR radio frequency path, and a control sub-circuit 1, where: the Wi-Fi radio frequency path comprises a first combiner 2, a coupler 3 and an antenna 4, wherein the first combiner 2 is connected with the antenna 4 through the coupler 3; the NR radio frequency path includes an NR modem 5, a filter 6, an electronic switch 7, and a second combiner 8, a first contact of the electronic switch 7 is connected to an input terminal of the filter 6, a second contact of the electronic switch 7 is connected to a receiving terminal of the NR modem 5, and a common terminal of the electronic switch 7 is connected to a first terminal of the second combiner 8; a first end of the control sub-circuit 1 is connected to the coupling end of the coupler 3, and a second end of the control sub-circuit 1 is connected to the control end of the electronic switch 7.
In this embodiment, the filter 6 may be a low-pass filter, and the Wi-Fi radio frequency path may further include a Wi-Fi modem, a power amplifier, and a low noise amplifier. Moreover, the connection relationship among the Wi-Fi modem, the power amplifier and the low noise amplifier can be as shown in fig. 1, and will not be described herein. The Wi-Fi radio path in fig. 1 may be a 5GWi-Fi radio path, the Wi-Fi modem may be a 5G Wi-Fi modem, the NR radio path may be a 5G NR radio path, and the NR modem may be a 5G NR modem.
The device in fig. 1 can be described with reference to the following:
a processor: data exchange processing is performed with the NR modem 5 and the Wi-Fi modem.
NR modem 5: the functions of 5G signal transmission and reception and power judgment are achieved. The NR modem 5 can control transmission and reception of the N78 frequency band. The N78 has a larger interval with Wi-Fi frequency, so that the existing process can produce a low-pass filter, and the bottom noise generated when Wi-Fi 5G transmits cannot influence the receiving of N78 between the N78 receiving path and the second combiner 8.
The electronic switch 7: under the control of the control end of the electronic switch receiving different control signals, the common end of the electronic switch 7 can be controlled to be connected with the first contact, or the common end of the electronic switch 7 can be controlled to be connected with the second contact. When the common terminal of the electronic switch 7 is connected to the first contact, the demodulation performance of the NR modem 5 can be ensured; when the common terminal of the electronic switch 7 is connected to the second contact, the insertion loss of the NR receiving path can be reduced, and the receiving performance can be improved. Of course, the electronic switch 7 may be a single pole double throw switch.
Wi-Fi modem: and modulating and demodulating Wi-Fi signals.
A power amplifier: and Wi-Fi emission power amplification.
A low noise amplifier: and Wi-Fi receives power amplification.
A combiner: the transmitting signal and the receiving signal are integrated and output to the antenna.
A coupler: the passive device can divide the power transmitted by the combiner into two paths for output, and the output power of the straight-through end is the input power minus the insertion loss of the combiner; the output power of the coupling end is the input power and the decoupling coefficient is reduced. For example, if the input power is 20dBm, the coupling coefficient is 10dB, and the insertion loss is 1dB, the through-end output power is 20-1 to 19dBm, and the coupling-end output power is 20-10 to 10 dBm.
Antenna isolation: the shape of the terminal equipment and the antenna layout determine that the antenna isolation is a determined value after the terminal equipment is developed. Influenced by the antenna layout of the terminal equipment, the isolation is smaller when the antenna distance is closer, and the isolation is larger when the antenna distance is farther. The noise generated by Wi-Fi 5G transmission is coupled to the NR receiving path through antenna isolation, and further influences the NR receiving.
In this embodiment, when the transmission power of the Wi-Fi radio frequency path is greater than or equal to the preset power, the common terminal of the electronic switch 7 may be controlled to be connected to the first contact, so that the demodulation performance of the NR modem 5 may be ensured; when the transmitting power of the Wi-Fi radio frequency channel is smaller than the preset power, the common end of the electronic switch 7 can be controlled to be connected with the second contact, the insertion loss of the NR receiving channel can be reduced, and the receiving performance is improved. Thus, the Wi-Fi radio path can reduce the influence on the radio frequency signals received by the NR radio frequency path when transmitting the radio frequency signals.
It should be noted that the circuit in this embodiment is also applicable to other schemes that add filters to the path to avoid Wi-Fi interference, for example, when the technology is mature enough to produce N79 filters, the scheme in this embodiment is also applicable to the N79 band.
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.
Optionally, the control sub-circuit 1 includes a diode detector circuit 11 and an attenuation network 12;
the input end of the diode detection circuit 11 is connected with the coupling end of the coupler 3, and the output end of the diode detection circuit 11 is connected with the first end of the attenuation network 12;
a second terminal of the attenuation network 12 is connected to the control terminal of the electronic switch 7.
In this embodiment, for better understanding of the circuit structure, please refer to fig. 2, and fig. 2 is a structural diagram of a radio frequency circuit according to an embodiment of the present invention. As shown in fig. 2, an input terminal of the diode detector circuit 11 is connected to a coupling terminal of the coupler 3, and an output terminal of the diode detector circuit 11 is connected to a first terminal of the attenuation network 12; a second terminal of the attenuation network 12 is connected to a control terminal of the electronic switch 7.
In this embodiment, the diode detector circuit 11 can output a coupling voltage to the attenuation network 12, the coupling voltage mostly does not meet the requirement of the control voltage required by the control terminal of the electronic switch 7, and due to the existence of the attenuation network 12, the coupling voltage can be attenuated and the attenuated coupling voltage can be output to the control terminal of the electronic switch 7, so that the voltage condition required by the control terminal of the electronic switch 7 can be matched to normally control the switching of the electronic switch 7.
For a better understanding of the principles of the above-described circuit, reference may also be made to the following steps:
firstly, an electronic switch (such as a single-pole double-throw switch) on an N78 receiving path is configured to default that a second contact is connected with a public end, at the moment, because the insertion loss of the N78 path before receiving signals is small, the sensitivity of the received signals can be improved as much as possible, and the improvement of the sensitivity has the advantages that weaker signals can be sensed, and normal communication can be ensured under the weaker signals.
II,A first combiner is added in a Wi-Fi 5G transmitting path, a signal at a direct end is output to a Wi-Fi antenna and transmitted to a space, a signal at a coupling end is input into a diode detection circuit, and a power signal P output by the coupling end is converted into a voltage signal V. According to a simple power-voltage relationship P-u2It can be seen that the higher the power, the greater the voltage converted.
And thirdly, converting the voltage signal V converted by the diode detection circuit into V 'by a voltage signal V generated by the diode detection circuit through an attenuation network, and controlling the switching of the electronic switch by using the V'. The electronic switch can be triggered to switch under the condition of lower power when the antenna isolation of some items is lower.
And fourthly, the attenuated voltage signal V' is used for controlling the electronic switch and triggering the switching threshold Vc of the electronic switch.
When V ' ≧ Vc, the public end of electronic switch is connected with the first contact, because the low pass filter is at this moment in the filtering action of 5G frequency channel, suppresses the noise that Wi-Fi transmission produced, and the noise signal that couples to N78 receiving path through the antenna isolation degree is further suppressed at this moment, makes the noise signal that finally reaches NR modem not enough influence NR modem's demodulation, has guaranteed NR modem's performance.
When V' < Vc, the public end of the electronic switch is connected with the second contact, the low insertion loss of an NR receiving path is ensured, and the NR receiving performance is improved.
And due to different shapes and antenna forms of different items, the antenna isolation degree may have a certain difference, so that the influence on the N78 receiving is different under the condition that the same Wi-Fi transmitting power generates the same noise. For example, the isolation of the antenna of item a is low, when WI-FI transmits 10dBm power, the low noise amplifier of the N78 receiving path is saturated to affect the demodulation performance, and at this time, the path needs to be switched to the path of the low pass filter; the antenna isolation of the item B is high, and the low noise amplifier of the N78 receiving path is saturated to influence the demodulation performance when the Wi-Fi transmits 15 dBm.
Optionally, the diode detector circuit 11 includes a diode VD, a capacitor C, and a resistor R;
the anode of the diode VD is connected to the coupling end of the coupler 3, and the cathode of the diode VD is connected to the first end of the attenuation network 12;
a first end of the capacitor C is connected with the cathode of the diode VD, and a second end of the capacitor C is grounded;
the first end of the resistor R is connected with the cathode of the diode VD, and the second end of the resistor R is grounded.
In this embodiment, for better understanding of the structure of the diode detector circuit 11, please refer to fig. 3, and fig. 3 is a structural diagram of the diode detector circuit according to an embodiment of the present invention. As shown in fig. 3, the diode detector circuit 11 includes a diode VD, a capacitor C, and a resistor R; the anode of the diode VD is connected to the coupling end of the coupler 3, and the cathode of the diode VD is connected to the first end of the attenuation network 12; a first end of the capacitor C is connected to a cathode of the diode VD, and a second end of the capacitor C is grounded; a first end of the resistor R is connected to a cathode of the diode VD, and a second end of the resistor R is grounded.
The diode detection circuit consists of an input loop, a diode VD and an RC low-pass filter. The input loop provides a signal source, and in the embodiment, the coupler is coupled to part of Wi-Fi transmission power, namely the signal source of the detection circuit. The diode is a germanium tube with small conduction voltage and rD. The RC circuit has two functions: the first is used as a detection load, and output voltage is generated at two ends; and the second is the bypass function of high-frequency current. RC needs to satisfyAndwherein ω iscIs the carrier frequency of the input signal to the detector circuit and Ω is the modulation frequency. Ideally, the impedance Z of the RC network should be: z (ω C) is 0 and Z (Ω) is R, i.e. short circuit for high frequencies, open circuit for dc and low frequencies, capacitor C, and load R.
The principle of diode detection is as follows: when the Wi-Fi transmitting signal, i.e. the high frequency voltage signal, to which the coupler is coupled is assumed to be ui, when ui increases from zero, since the high frequency impedance of the capacitor C is small, ui is almost entirely applied across the diode VD, the diode VD is turned on, the capacitor C is charged, since rD is small, the charging current is large, the charging real constant rDC is small, and the voltage of the capacitor C is quickly established. The voltage of the capacitor C is reversely applied to the diode VD, and the voltage on the diode uD ═ uC-ui at this time. When uC reaches ui, the voltage uD across the diode is 0, VD is turned off, ui continues to drop, and capacitor C discharges the stored charge through resistor R and the load. The discharge real constant RC is large, and the discharge is slow. When uC does not drop much, ui comes next positive half cycle. When ui is larger than uC, the diode VD is conducted again, the capacitor C is charged again, after the capacitor voltage uC is increased, the discharging and charging processes are continued until the charging charge quantity of the capacitor C when the diode VD is conducted and the discharging charge quantity of the capacitor C when the VD is cut off, and dynamic balance is achieved.
The output voltage uo of the detector circuit is uC. In the present invention, uC is the control voltage of an electronic switch (e.g., a single-pole double-throw switch). The higher the input power of the detection circuit is, the higher the uC is, and the switching state of the electronic switch can be changed when the switching voltage of the control pin of the electronic switch is reached.
Optionally, the electronic switch is a single-pole double-throw switch.
In this embodiment, the electronic switch is a single-pole double-throw switch.
The radio frequency circuit of the embodiment of the invention comprises a Wi-Fi radio frequency access, an NR radio frequency access and a control sub-circuit 1, wherein: the Wi-Fi radio frequency path comprises a first combiner 2, a coupler 3 and an antenna 4, wherein the first combiner 2 is connected with the antenna 4 through the coupler 3; the NR radio frequency path includes an NR modem 5, a filter 6, an electronic switch 7, and a second combiner 8, a first contact of the electronic switch 7 is connected to an input terminal of the filter 6, a second contact of the electronic switch 7 is connected to a receiving terminal of the NR modem 5, and a common terminal of the electronic switch 7 is connected to a first terminal of the second combiner 8; a first end of the control sub-circuit 1 is connected to the coupling end of the coupler 3, and a second end of the control sub-circuit 1 is connected to the control end of the electronic switch 7. The embodiment of the invention can reduce the influence of the Wi-Fi radio frequency channel on the radio frequency signal received by the NR radio frequency channel.
The embodiment of the invention also provides terminal equipment which comprises the radio frequency circuit.
Referring to fig. 4, fig. 4 is a flowchart of a circuit control method according to an embodiment of the present invention, and is applied to the terminal device. As shown in fig. 4, the method includes:
step 401, detecting the emission power of the Wi-Fi radio frequency channel.
In this embodiment, after the transmission power of the Wi-Fi radio frequency channel is detected, different control may be performed according to different transmission powers.
Step 402, according to the transmission power, connecting a first end of a combiner of the NR radio frequency path and an input end of the NR modem, or connecting a first end of a combiner of the NR radio frequency path and an input end of a filter.
In this embodiment, the first end of the combiner of the NR radio frequency path may be connected to the input end of the NR modem when the transmission power is greater than or equal to a preset power; the first end of the combiner of the NR radio frequency path may be connected to the input end of the filter, when the transmission power is less than a predetermined power.
Alternatively, a coupling voltage may be obtained by coupling the transmission power, and the first end of the combiner of the NR radio frequency path and the input end of the NR modem may be connected according to the coupling voltage, or the first end of the combiner of the NR radio frequency path and the input end of the filter may be connected.
The circuit control method may be applied to a terminal device including the radio frequency circuit, and performs control according to a control principle of the radio frequency circuit.
Optionally, the connecting the first end of the combiner of the NR radio frequency path and the input end of the NR modem, or connecting the first end of the combiner of the NR radio frequency path and the input end of the filter according to the transmission power includes:
detecting a coupling voltage corresponding to the transmitting power;
carrying out attenuation processing on the coupling voltage to obtain an attenuated coupling voltage;
connecting a first end of a combiner of the NR radio frequency path and an input end of an NR modem under the condition that the attenuation coupling voltage is greater than or equal to a preset voltage;
and connecting the first end of the combiner of the NR radio frequency path and the input end of the filter under the condition that the attenuation coupling voltage is less than the preset voltage.
In this embodiment, the coupling voltage mostly does not meet the requirement of the control voltage required by the control terminal of the electronic switch, so that the coupling voltage can be attenuated, and the attenuated coupling voltage obtained after attenuation is output to the control terminal of the electronic switch, so that the voltage condition required by the control terminal of the electronic switch can be matched, and the switching of the electronic switch can be normally controlled, that is, the first terminal of the combiner of the NR radio frequency path and the input terminal of the NR modem are connected when the attenuated coupling voltage is greater than or equal to the preset voltage; and connecting the first end of the combiner of the NR radio frequency path and the input end of the filter under the condition that the attenuation coupling voltage is less than the preset voltage.
The circuit control method of the embodiment of the invention is applied to terminal equipment, and comprises the following steps: detecting the transmitting power of a Wi-Fi radio frequency channel; and according to the transmitting power, connecting the first end of the combiner of the NR radio frequency path with the input end of the NR modem, or connecting the first end of the combiner of the NR radio frequency path with the input end of the filter. The embodiment of the invention can reduce the influence of the Wi-Fi radio frequency channel on the radio frequency signal received by the NR radio frequency channel.
Referring to fig. 5, fig. 5 is a structural diagram of a terminal device according to an embodiment of the present invention, where the terminal device includes a Wi-Fi radio frequency path and an NR radio frequency path, and details of a circuit control method according to the above embodiment can be implemented to achieve the same effect. As shown in fig. 5, the terminal device 500 includes a detection module 501 and a connection module 502, the detection module 501 is connected to the connection module 502, wherein:
a detection module 501, configured to detect a transmission power of the Wi-Fi radio frequency access;
a connection module 502, configured to connect, according to the transmission power, the first end of the combiner of the NR radio frequency path and the input end of the NR modem, or connect the first end of the combiner of the NR radio frequency path and the input end of the filter.
Optionally, as shown in fig. 6, the connection module 502 includes:
the detection submodule 5021 is used for detecting the coupling voltage corresponding to the transmitting power;
the attenuation submodule 5022 is used for carrying out attenuation processing on the coupling voltage to obtain an attenuation coupling voltage;
the first connecting submodule 5023 is used for connecting the first end of the combiner of the NR radio frequency path with the input end of the NR modem under the condition that the attenuation coupling voltage is greater than or equal to the preset voltage;
the second connecting sub-module 5024 is configured to connect the first end of the combiner of the NR radio frequency path to the input end of the filter when the attenuation coupling voltage is smaller than the preset voltage.
The terminal device 500 can implement each process implemented by the terminal device in the above method embodiments, and details are not repeated here to avoid repetition.
The terminal device 500 of the embodiment of the present invention, the detection module 501, is configured to detect the transmission power of the Wi-Fi radio frequency access; a connection module 502, configured to connect, according to the transmission power, the first end of the combiner of the NR radio frequency path and the input end of the NR modem, or connect the first end of the combiner of the NR radio frequency path and the input end of the filter. The embodiment of the invention can reduce the influence of the Wi-Fi radio frequency channel on the radio frequency signal received by the NR radio frequency channel.
Referring to fig. 7, fig. 7 is a schematic diagram of a hardware structure of a terminal device for implementing various embodiments of the present invention, where the terminal device includes a Wi-Fi radio path and an NR radio path, and the terminal device 700 includes, but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, a processor 710, a power supply 711, and the like. Those skilled in the art will appreciate that the terminal device configuration shown in fig. 7 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 710 is configured to detect a transmission power of a Wi-Fi radio frequency channel; and according to the transmitting power, connecting the first end of the combiner of the NR radio frequency path with the input end of the NR modem, or connecting the first end of the combiner of the NR radio frequency path with the input end of the filter. The embodiment of the invention can reduce the influence of the Wi-Fi radio frequency channel on the radio frequency signal received by the NR radio frequency channel.
Optionally, the processor 710 is further configured to detect a coupling voltage corresponding to the transmission power; carrying out attenuation processing on the coupling voltage to obtain an attenuated coupling voltage; connecting a first end of a combiner of the NR radio frequency path and an input end of an NR modem under the condition that the attenuation coupling voltage is greater than or equal to a preset voltage; and connecting the first end of the combiner of the NR radio frequency path and the input end of the filter under the condition that the attenuation coupling voltage is less than the preset voltage.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 701 may be used for receiving and sending signals during a message transmission and reception process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 710; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 701 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. In addition, the radio frequency unit 701 may also communicate with a network and other devices through a wireless communication system.
The terminal device provides the user with wireless broadband internet access through the network module 702, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.
The audio output unit 703 may convert audio data received by the radio frequency unit 701 or the network module 702 or stored in the memory 709 into an audio signal and output as sound. Also, the audio output unit 703 may also provide audio output related to a specific function performed by the terminal device 700 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 703 includes a speaker, a buzzer, a receiver, and the like.
The input unit 704 is used to receive audio or video signals. The input Unit 704 may include a Graphics Processing Unit (GPU) 7041 and a microphone 7042, and the Graphics processor 7041 processes image data of a still picture or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 706. The image frames processed by the graphic processor 7041 may be stored in the memory 709 (or other storage medium) or transmitted via the radio unit 701 or the network module 702. The microphone 7042 may receive sounds and may be capable of processing such sounds 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 701 in case of a phone call mode.
The terminal device 700 further comprises at least one sensor 705, such as light sensors, motion sensors and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the luminance of the display panel 7061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 7061 and/or a backlight when the terminal device 700 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 705 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The display unit 706 is used to display information input by the user or information provided to the user. The Display unit 706 may include a Display panel 7061, and the Display panel 7061 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 707 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 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 7071 (e.g., operations by a user on or near the touch panel 7071 using a finger, a stylus, or any other suitable object or attachment). The touch panel 7071 may include two parts of 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 710, receives a command from the processor 710, and executes the command. In addition, the touch panel 7071 can be implemented by various types such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 707 may include other input devices 7072 in addition to the touch panel 7071. In particular, the other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 7071 may be overlaid on the display panel 7061, and when the touch panel 7071 detects a touch operation on or near the touch panel 7071, the touch operation is transmitted to the processor 710 to determine the type of the touch event, and then the processor 710 provides a corresponding visual output on the display panel 7061 according to the type of the touch event. Although in fig. 7, the touch panel 7071 and the display panel 7061 are implemented as two independent components to implement the input and output functions of the terminal device, in some embodiments, the touch panel 7071 and the display panel 7061 may be integrated to implement the input and output functions of the terminal device, which is not limited herein.
The interface unit 708 is an interface for connecting an external device to the terminal apparatus 700. 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 708 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 700 or may be used to transmit data between the terminal apparatus 700 and the external device.
The memory 709 may be used to store software programs as well as various data. The memory 709 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 709 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 710 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 running or executing software programs and/or modules stored in the memory 709 and calling data stored in the memory 709, thereby performing overall monitoring of the terminal device. Processor 710 may include one or more processing units; preferably, the processor 710 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 processor 710.
The terminal device 700 may further include a power supply 711 (e.g., a battery) for supplying power to various components, and preferably, the power supply 711 may be logically connected to the processor 710 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 700 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 710, a memory 709, and a computer program stored in the memory 709 and capable of running on the processor 710, where the computer program is executed by the processor 710 to implement each process of the above circuit control 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 above-mentioned circuit control 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 (11)
1. A radio frequency circuit comprising a Wi-Fi radio frequency path, an NR radio frequency path, and a control subcircuit, wherein:
the Wi-Fi radio frequency path comprises a first combiner, a coupler and an antenna, wherein the first combiner is connected with the antenna through the coupler;
the NR radio frequency path comprises an NR modem, a filter, an electronic switch and a second combiner, wherein a first contact of the electronic switch is connected with the input end of the filter, a second contact of the electronic switch is connected with the receiving end of the NR modem, and a common end of the electronic switch is connected with a first end of the second combiner;
the first end of the control sub-circuit is connected with the coupling end of the coupler, and the second end of the control sub-circuit is connected with the control end of the electronic switch.
2. The radio frequency circuit of claim 1, wherein the control sub-circuit comprises a diode detector circuit and an attenuation network;
the input end of the diode detection circuit is connected with the coupling end of the coupler, and the output end of the diode detection circuit is connected with the first end of the attenuation network;
and the second end of the attenuation network is connected with the control end of the electronic switch.
3. The radio frequency circuit of claim 2, wherein the diode detector circuit comprises a diode, a capacitor, a resistor;
the anode of the diode is connected with the coupling end of the coupler, and the cathode of the diode is connected with the first end of the attenuation network;
the first end of the capacitor is connected with the cathode of the diode, and the second end of the capacitor is grounded;
the first end of the resistor is connected with the cathode of the diode, and the second end of the resistor is grounded.
4. The radio frequency circuit according to any of claims 1 to 3, wherein the electronic switch is a single-pole double-throw switch.
5. A terminal device, characterized in that it comprises a radio frequency circuit according to any one of claims 1 to 4.
6. A circuit control method applied to the terminal device according to claim 5, the method comprising:
detecting the transmitting power of a Wi-Fi radio frequency channel;
and according to the transmitting power, connecting the first end of the combiner of the NR radio frequency path with the input end of the NR modem, or connecting the first end of the combiner of the NR radio frequency path with the input end of the filter.
7. The method of claim 6, wherein said connecting a first end of a combiner of NR radio paths to an input of an NR modem or connecting a first end of a combiner of the NR radio paths to an input of a filter according to the transmit power comprises:
detecting a coupling voltage corresponding to the transmitting power;
carrying out attenuation processing on the coupling voltage to obtain an attenuated coupling voltage;
connecting a first end of a combiner of the NR radio frequency path and an input end of an NR modem under the condition that the attenuation coupling voltage is greater than or equal to a preset voltage;
and connecting the first end of the combiner of the NR radio frequency path and the input end of the filter under the condition that the attenuation coupling voltage is less than the preset voltage.
8. A terminal device comprising a Wi-Fi radio path and an NR radio path, comprising:
the detection module is used for detecting the transmitting power of the Wi-Fi radio frequency channel;
and the connecting module is used for connecting the first end of the combiner of the NR radio frequency path with the input end of the NR modem or connecting the first end of the combiner of the NR radio frequency path with the input end of the filter according to the transmitting power.
9. The terminal device of claim 8, wherein the connection module comprises:
the detection submodule is used for detecting the coupling voltage corresponding to the transmitting power;
the attenuation submodule is used for carrying out attenuation processing on the coupling voltage to obtain an attenuation coupling voltage;
the first connecting submodule is used for connecting the first end of the combiner of the NR radio frequency path and the input end of the NR modem under the condition that the attenuation coupling voltage is greater than or equal to a preset voltage;
and the second connecting submodule is used for connecting the first end of the combiner of the NR radio frequency path and the input end of the filter under the condition that the attenuation coupling voltage is less than the preset voltage.
10. A terminal device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the circuit control method according to any one of claims 6 to 7.
11. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the circuit control method according to any one of claims 6 to 7.
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| CN201910911591.0A CN110601715A (en) | 2019-09-25 | 2019-09-25 | Radio frequency circuit, terminal equipment and circuit control method |
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| CN201910911591.0A CN110601715A (en) | 2019-09-25 | 2019-09-25 | Radio frequency circuit, terminal equipment and circuit control method |
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| CN201910911591.0A Pending CN110601715A (en) | 2019-09-25 | 2019-09-25 | Radio frequency circuit, terminal equipment and circuit control method |
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