CN111934695A - Mobile terminal - Google Patents
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- CN111934695A CN111934695A CN202010794955.4A CN202010794955A CN111934695A CN 111934695 A CN111934695 A CN 111934695A CN 202010794955 A CN202010794955 A CN 202010794955A CN 111934695 A CN111934695 A CN 111934695A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 18
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- 239000003990 capacitor Substances 0.000 claims description 12
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- 238000011105 stabilization Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 17
- 230000006870 function Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 5
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- 238000000034 method Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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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
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
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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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/30—Charge provided using DC bus or data bus of a computer
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- Engineering & Computer Science (AREA)
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Abstract
The present invention provides a mobile terminal, comprising: a radio frequency transmission module; the USB power supply module is provided with a USB charging interface; the power supply management module is provided with a voltage output interface and is electrically connected with the USB power supply module; the signal stabilizing module is electrically connected with the USB power supply module or the power management module, so that when the terminal is charged through the USB charging interface, the modulation spectrum generated by the radio frequency transmitting module can be maintained within a preset range through the signal stabilizing module, and the interference of the terminal on an adjacent channel during charging is reduced.
Description
Technical Field
The application relates to the technical field of communication, in particular to a mobile terminal.
Background
The radio frequency module is an important module in the mobile terminal, belongs to one of modules of a reader-writer system, and is responsible for loading and transmitting radio frequency signals, processing returned data signals and sending the processed data signals to an intelligent unit of the reader-writer.
In the prior art, a 2G power amplifier is integrated in a radio frequency transmitting module, a power supply is plugged in a terminal, and when the terminal is charged through a USB charging interface, a modulation spectrum generated by the radio frequency transmitting module exceeds a preset standard range to generate interference on an adjacent channel.
Disclosure of Invention
The application provides a mobile terminal, which effectively solves the problem that when the terminal is charged through a USB charging interface, a modulation spectrum generated by a radio frequency emission module exceeds a preset standard range to generate interference on an adjacent channel.
In order to solve the above problem, the present invention provides a mobile terminal, including:
a radio frequency transmission module;
the USB power supply module is provided with a USB charging interface, and the USB charging interface is used for receiving an external power supply;
the power management module is electrically connected with the USB power supply module and is provided with a voltage output interface, and the power management module provides power for the radio frequency emission module through the voltage output interface;
the signal stabilizing module is electrically connected with one of the USB power supply module or the power management module and is used for maintaining the modulation spectrum generated by the radio frequency transmitting module within a preset range when the mobile terminal is charged through the USB charging interface.
Preferably, the signal stabilizing module includes a current limiting unit, and the current limiting unit is electrically connected to the USB power supply module and is configured to reduce a current output from the USB power supply module to the power management module.
Further preferably, the current limiting unit includes a first inductor, and the first inductor is connected in series between the USB charging interface and the USB power supply module.
Further preferably, the inductance value of the first inductor is not greater than 220 nanohenries.
Further preferably, the signal stabilizing module includes a voltage stabilizing unit, and the voltage stabilizing unit is electrically connected to the power management module and is configured to reduce a voltage output by the power management module to the radio frequency transmitting module.
Further preferably, the voltage stabilizing unit includes a second inductor and a capacitor, the second inductor is connected in series between the voltage output interface and the radio frequency transmitting module, and the capacitor is connected in parallel between the voltage output interface and the radio frequency transmitting module.
Further preferably, the inductance value of the second inductor is not greater than 4.7 microhenries, and the capacitance value of the capacitor is not greater than 4.7 microfarads.
Further preferably, the signal stabilizing module includes the current limiting unit and the voltage stabilizing unit.
Further preferably, the wiring area of the USB charging interface connected to the USB power supply module and the wiring area of the power management module connected to the radio frequency transmission module do not overlap.
Further preferably, the USB power supply module further includes a rectifying unit, configured to convert ac power received by the USB charging interface into dc power.
The invention has the beneficial effects that: the present invention provides a mobile terminal, comprising: a radio frequency transmission module; the USB power supply module is provided with a USB charging interface; the power supply management module is provided with a voltage output interface and is electrically connected with the USB power supply module; the signal stabilizing module is electrically connected with the USB power supply module or the power management module, so that when the terminal is charged through the USB charging interface, the modulation spectrum generated by the radio frequency transmitting module can be maintained within a preset range through the signal stabilizing module, and the interference of the terminal on an adjacent channel during charging is reduced.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments according to 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 application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a mobile terminal according to a first embodiment of the present invention.
Fig. 2 is another schematic structural diagram of a mobile terminal according to a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a mobile terminal according to a second embodiment of the present invention.
Fig. 4 is another schematic structural diagram of a mobile terminal according to a second embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a mobile terminal according to a third embodiment of the present invention.
Fig. 6 is another schematic structural diagram of a mobile terminal according to a third embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a mobile terminal according to a fourth embodiment of the present invention.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
It should be noted that the thicknesses and shapes in the drawings of the present invention do not reflect actual proportions, and are merely intended to schematically illustrate various embodiments of the present invention.
The embodiment of the invention aims at solving the problem that when the conventional mobile terminal is charged through a USB charging interface, a modulation spectrum generated by a radio frequency transmitting module exceeds a preset standard range to generate interference on an adjacent channel.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a mobile terminal according to a first embodiment of the present invention, in which components and relative positions of the components according to the embodiment of the present invention can be seen visually.
As shown in fig. 1, the mobile terminal 10 includes: USB power module 11, power management module 12, radio frequency emission module 13 and signal stabilization module 14, wherein:
the USB power supply module 11 is provided with a USB charging interface 1, and the USB charging interface 1 is used for receiving an external power supply;
the power management module 12 is electrically connected with the USB power supply module 11 and is provided with a voltage output interface 2, and the power management module 12 supplies power to the radio frequency emission module 13 through the voltage output interface 2;
the signal stabilizing module 14 is electrically connected to one of the USB power supply module 11 or the power management module 12, and in this embodiment, is electrically connected to the power management module 12, and the signal stabilizing module 14 is configured to maintain the modulation spectrum generated by the rf transmitting module 13 within a predetermined range when the mobile terminal 10 is charged through the USB charging interface 1.
Further, referring to fig. 2, fig. 2 is another schematic structural diagram of the mobile terminal according to the first embodiment of the present invention, and it is apparent from the diagram that components and relative positions of the components of the embodiment according to the present invention are visible.
As shown in fig. 2, the signal stabilizing module 14 includes a voltage stabilizing unit 141, and the voltage stabilizing unit 141 is electrically connected to the power management module 12 for reducing the voltage output from the power management module 12 to the rf transmitting module 13.
Specifically, the voltage stabilizing unit 141 may include a second inductor 1411 and a capacitor 1412, the second inductor 1411 is connected in series between the voltage output interface 2 and the rf transmitting module 13, and the capacitor 1412 is connected in parallel between the voltage output interface 2 and the rf transmitting module 13.
Specifically, the inductance of the second inductor 1411 is not greater than 4.7 microhenries and the capacitance of the capacitor 1412 is not greater than 4.7 microfarads.
Further, in order to better reduce the problem that the modulation spectrum generated by the rf transmitting module 13 exceeds the preset standard range and interferes with the adjacent channel when the mobile terminal 10 is charged through the USB charging interface 1, the wiring area of the USB charging interface 1 connected to the USB power supply module 11 and the wiring area of the power management module 12 connected to the rf transmitting module 13 may not overlap.
Further, the USB power supply module 11 further includes a rectifying unit 111 for converting the ac power received by the USB charging interface 1 into dc power, and then supplying the dc power to the mobile terminal 10.
Unlike the prior art, the present invention provides a mobile terminal 10 including: a radio frequency transmission module 13; a USB power supply module 11 with a USB charging interface 1; the power management module 12 is provided with a voltage output interface 2, and the power management module 12 is electrically connected with the USB power supply module 11; the signal stabilizing module 14 is electrically connected to the power management module 12, so that when the mobile terminal 10 is charged through the USB charging interface 1, the modulation spectrum generated by the radio frequency transmitting module 13 can be maintained within a preset range through the signal stabilizing module 14, thereby reducing interference to an adjacent channel when the mobile terminal is charged.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a mobile terminal according to a second embodiment of the present invention, in which components and relative positions of the components according to the second embodiment of the present invention can be seen visually.
As shown in fig. 3, the mobile terminal 20 includes: USB power module 21, power management module 22, radio frequency emission module 23 and signal stabilization module 24, wherein:
the USB power supply module 21 is provided with a USB charging interface 1, and the USB charging interface 1 is used for receiving an external power supply;
the power management module 22 is electrically connected with the USB power supply module 21, and has a voltage output interface 2, and the power management module 22 provides power to the radio frequency transmission module 23 through the voltage output interface 2;
the signal stabilizing module 24 is electrically connected to one of the USB power supply module 21 or the power management module 22, and in this embodiment, is electrically connected to the USB power supply module 21, and the signal stabilizing module 24 is configured to maintain the modulation spectrum generated by the rf transmitting module 23 within a predetermined range when the mobile terminal 20 is charged through the USB charging interface 1.
Further, referring to fig. 4, fig. 4 is another schematic structural diagram of a mobile terminal according to a second embodiment of the present invention, and it is apparent from the diagram that components and relative positions of the components of the embodiment according to the present invention are visible.
As shown in fig. 4, the signal stabilizing module 24 may include a current limiting unit 241, where the current limiting unit 241 is electrically connected to the USB power supply module 21 for reducing the current output from the USB power supply module 21 to the power management module 22.
Specifically, the current limiting unit 241 includes a first inductor 2411, and the first inductor 2411 is connected in series between the USB charging interface 1 and the USB power supply module 21.
Specifically, the inductance value of the first inductor 2411 is not greater than 220 nanohenries.
Further, in order to better reduce the problem that the modulation spectrum generated by the rf transmitting module 23 exceeds the preset standard range and interferes with the adjacent channel when the mobile terminal 20 is charged through the USB charging interface 1, the wiring area of the USB charging interface 1 connected to the USB power supply module 21 and the wiring area of the power management module 22 connected to the rf transmitting module 23 may not overlap.
Further, the USB power supply module 21 further includes a rectifying unit 211 for converting the ac power received by the USB charging interface 1 into dc power, and then supplying the dc power to the mobile terminal 20.
Unlike the prior art, the present invention provides a mobile terminal 20, including: a radio frequency transmission module 23; a USB power supply module 21 having a USB charging interface 1; the power management module 22 is provided with a voltage output interface 2, and the power management module 22 is electrically connected with the USB power supply module 21; the signal stabilizing module 24 is electrically connected to the USB power supply module 21, so that when the mobile terminal 20 is charged through the USB charging interface 1, the modulation spectrum generated by the radio frequency transmitting module 23 can be maintained within a preset range through the signal stabilizing module 24, thereby reducing interference to an adjacent channel when the mobile terminal is charged.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a mobile terminal according to a third embodiment of the present invention, in which components and relative positions of the components according to the third embodiment of the present invention can be seen visually.
As shown in fig. 5, the mobile terminal 30 includes: USB power supply module 31, power management module 32, radio frequency transmission module 33, and signal stabilization module 34, wherein:
the USB power supply module 31 has a USB charging interface 1, and the USB charging interface 1 is configured to receive an external power supply;
the power management module 32 is electrically connected with the USB power supply module 31, and has a voltage output interface 2, and the power management module 32 provides power to the radio frequency transmission module 33 through the voltage output interface 2;
the signal stabilizing module 34 is electrically connected to both the USB power supply module 31 and the power management module 32, and the signal stabilizing module 34 is configured to maintain the modulation spectrum generated by the rf transmitting module 33 within a predetermined range when the mobile terminal 30 is charged through the USB charging interface 1.
Further, referring to fig. 6, fig. 6 is another schematic structural diagram of a mobile terminal according to a third embodiment of the present invention, and it is apparent from the diagram that components and relative positions of the components of the embodiment according to the present invention are visible.
As shown in fig. 6, the signal stabilizing module 34 includes a current limiting unit 341 and a voltage stabilizing unit 342, the current limiting unit 341 is electrically connected to the USB power supply module 31 for reducing the current output from the USB power supply module 31 to the power management module 32, and the voltage stabilizing unit 342 is electrically connected to the power management module 32 for reducing the voltage output from the power management module 32 to the rf transmitting module 33.
In particular, the current limiting unit 341 may include a first inductor 3411, and the first inductor 3411 is connected in series between the USB charging interface 1 and the USB power supply module 31.
Specifically, the voltage regulation unit 342 may include a second inductor 3421 and a capacitor 3422, wherein the second inductor 3421 is connected in series between the voltage output interface 2 and the rf transmission module 33, and the capacitor 3422 is connected in parallel between the voltage output interface 2 and the rf transmission module 33.
Specifically, the inductance value of the first inductor 3411 is not greater than 220 nanohenries, the inductance value of the second inductor 3421 is not greater than 4.7 microhenries, and the capacitance value of the capacitor 3422 is not greater than 4.7 microfarads.
Further, in order to better reduce the problem that the modulation spectrum generated by the rf transmitting module 33 exceeds the preset standard range and interferes with the adjacent channel when the mobile terminal 30 is charged through the USB charging interface 1, the wiring area of the USB charging interface 1 connected to the USB power supply module 31 and the wiring area of the power management module 32 connected to the rf transmitting module 33 may not overlap.
Further, the USB power supply module 31 further includes a rectifying unit 311 for converting the ac power received by the USB charging interface 1 into dc power, and then supplying the dc power to the mobile terminal 30.
Unlike the prior art, the present invention provides a mobile terminal 30, including: a radio frequency transmission module 33; a USB power supply module 31 having a USB charging interface 1; a power management module 32 having a voltage output interface 2, wherein the power management module 32 is electrically connected to the USB power supply module 31; the signal stabilizing module 34, and the signal stabilizing module 34 is electrically connected to both the USB power supply module 31 and the power management module 32, so that when the mobile terminal 30 is charged through the USB charging interface 1, the modulation spectrum generated by the radio frequency transmitting module 33 can be maintained within a preset range through the signal stabilizing module 34, thereby reducing interference to an adjacent channel when the mobile terminal is charged.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a mobile terminal according to a fourth embodiment of the present invention, in which components of the present invention and relative positions of the components can be seen visually.
As shown in fig. 7, the mobile terminal 300 is provided with an RF circuit 310, a memory 320, an input unit 330, a display unit 340, a sensor 350, an audio circuit 360, a transmission module 370, a processor 380, and a power supply 390.
In particular, the RF circuit 310 is used for receiving and transmitting electromagnetic waves, and implementing interconversion between the electromagnetic waves and electrical signals, thereby communicating with a communication network or other devices. RF circuitry 310 may include various existing circuit elements for performing these functions, such as an antenna, a radio frequency transceiver, a digital signal processor, an encryption/decryption chip, a Subscriber Identity Module (SIM) card, memory, and so forth. RF circuit 310 may communicate with various networks such as the internet, an intranet, a wireless network, or with other devices over a wireless network. The wireless network may comprise a cellular telephone network, a wireless local area network, or a metropolitan area network. The Wireless network may use various Communication standards, protocols, and technologies, including, but not limited to, Global System for Mobile Communication (GSM), Enhanced Data GSM Environment (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Wireless Fidelity (Wi-Fi) (e.g., Institute of Electrical and Electronics Engineers (IEEE) standard IEEE802.11 a, IEEE802.11 b, IEEE802.11g, and/or IEEE802.11 n), Voice over Internet Protocol (VoIP), world wide mail Access (Microwave Access for micro), wimax-1, other suitable short message protocols, and any other suitable Protocol for instant messaging, and may even include those protocols that have not yet been developed.
The memory 320 may be configured to store software programs and modules, such as program instructions/modules corresponding to the automatic light supplement system and method for front-facing camera photographing in the foregoing embodiments, and the processor 380 executes various functional applications and data processing by running the software programs and modules stored in the memory 320, so as to implement the function of automatic light supplement for front-facing camera photographing. The memory 320 may include high speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 320 may further include memory located remotely from the processor 380, which may be connected to the mobile terminal 300 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input unit 330 may be used to receive input numeric or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, the input unit 330 may include a touch-sensitive surface 331 as well as other input devices 332. The touch-sensitive surface 331, also referred to as a touch screen or touch pad, may collect touch operations by a user on or near the touch-sensitive surface 331 (e.g., operations by a user on or near the touch-sensitive surface 331 using a finger, a stylus, or any other suitable object or attachment), and drive the corresponding connection device according to a predetermined program. Alternatively, the touch sensitive surface 331 may comprise two parts, a touch detection means 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 380, and can receive and execute commands sent by the processor 380. In addition, the touch-sensitive surface 331 may be implemented using various types of resistive, capacitive, infrared, and surface acoustic waves. The input unit 330 may comprise other input devices 332 in addition to the touch sensitive surface 331. In particular, other input devices 332 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.
The display unit 340 may be used to display information input by or provided to the user and various graphical user interfaces of the mobile terminal 300, which may be made up of graphics, text, icons, video, and any combination thereof. The Display unit 340 may include a Display panel 341, and optionally, the Display panel 341 may be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like. Further, touch-sensitive surface 331 may overlay display panel 341, and when touch-sensitive surface 331 detects a touch operation thereon or thereabout, communicate to processor 380 to determine the type of touch event, and processor 380 then provides a corresponding visual output on display panel 341 in accordance with the type of touch event. Although in FIG. 3, touch-sensitive surface 331 and display panel 341 are implemented as two separate components for input and output functions, in some embodiments, touch-sensitive surface 331 and display panel 341 may be integrated for input and output functions.
The sensor 350 may be a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel 341 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 341 and/or the backlight when the mobile terminal 300 is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when the mobile phone is stationary, and can be used for applications of recognizing the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which may be further configured on the mobile terminal 300, detailed descriptions thereof are omitted.
The transport module 370 (e.g., a Wi-Fi module) may assist a user in sending and receiving e-mail, browsing web pages, accessing streaming media, etc., which provides wireless broadband internet access to the user. Although fig. 3 shows the transmission module 370, it is understood that it does not belong to the essential constitution of the mobile terminal 300 and may be omitted entirely within the scope not changing the essence of the invention as needed.
The processor 380 is a control center of the mobile terminal 300, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile terminal 300 and processes data by operating or executing software programs and/or modules stored in the memory 320 and calling data stored in the memory 320, thereby integrally monitoring the mobile phone. Optionally, processor 380 may include one or more processing cores; in some embodiments, processor 380 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 380.
A power supply 390, such as a battery, is used to power the various components and, in some embodiments, may be logically coupled to the processor 380 via a power management system to manage charging, discharging, and power consumption via the power management system. The power supply 390 may also include any component including one or more of a dc or ac power source, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by using equivalents or equivalent substitutions fall within the protection scope of the claims of the present invention.
In summary, although the preferred embodiments of the present invention have been described above, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (10)
1. A mobile terminal, characterized in that the mobile terminal comprises:
a radio frequency transmission module;
the USB power supply module is provided with a USB charging interface, and the USB charging interface is used for receiving an external power supply;
the power management module is electrically connected with the USB power supply module and is provided with a voltage output interface, and the power management module provides power for the radio frequency emission module through the voltage output interface;
the signal stabilizing module is electrically connected with one of the USB power supply module or the power management module and is used for maintaining the modulation spectrum generated by the radio frequency transmitting module within a preset range when the mobile terminal is charged through the USB charging interface.
2. The mobile terminal of claim 1, wherein the signal stabilization module comprises a current limiting unit electrically connected to the USB power supply module for reducing a current output from the USB power supply module to the power management module.
3. The mobile terminal of claim 2, wherein the current limiting unit comprises a first inductor connected in series between the USB charging interface and the USB power supply module.
4. The mobile terminal of claim 3, wherein the inductance value of the first inductor is no greater than 220 nanohenries.
5. The mobile terminal of claim 1, wherein the signal stabilizing module comprises a voltage stabilizing unit, and the voltage stabilizing unit is electrically connected to the power management module and configured to reduce the voltage output by the power management module to the rf transmitting module.
6. The mobile terminal of claim 5, wherein the voltage regulation unit comprises a second inductor and a capacitor, the second inductor is connected in series between the voltage output interface and the radio frequency transmission module, and the capacitor is connected in parallel between the voltage output interface and the radio frequency transmission module.
7. The mobile terminal of claim 6, wherein the inductance value of the second inductor is no greater than 4.7 microhenries and the capacitance value of the capacitor is no greater than 4.7 microfarads.
8. The mobile terminal according to claims 2 and 5, wherein the signal stabilization module comprises the current limiting unit and the voltage stabilizing unit.
9. The mobile terminal of claim 1, wherein a wiring area of the USB charging interface connected to the USB power supply module does not overlap a wiring area of the power management module connected to the rf transmission module.
10. The mobile terminal of claim 1, wherein the USB power supply module further comprises a rectifying unit for converting ac power received by the USB charging interface into dc power.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010794955.4A CN111934695A (en) | 2020-08-10 | 2020-08-10 | Mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010794955.4A CN111934695A (en) | 2020-08-10 | 2020-08-10 | Mobile terminal |
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| CN111934695A true CN111934695A (en) | 2020-11-13 |
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2020
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Application publication date: 20201113 |
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