CN112350743A - Antenna selection circuit structure, antenna selection method and customer premises equipment - Google Patents
Antenna selection circuit structure, antenna selection method and customer premises equipment Download PDFInfo
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- CN112350743A CN112350743A CN202011144544.7A CN202011144544A CN112350743A CN 112350743 A CN112350743 A CN 112350743A CN 202011144544 A CN202011144544 A CN 202011144544A CN 112350743 A CN112350743 A CN 112350743A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
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Abstract
The invention discloses an antenna selection circuit structure, an antenna selection method and customer premises equipment, comprising the following steps: the antenna comprises an antenna voltage detection circuit, an antenna selection circuit, a built-in antenna circuit and a radio frequency module, wherein the radio frequency module is electrically connected with the antenna selection circuit, the antenna selection circuit is electrically connected with the built-in antenna circuit, and the antenna voltage detection circuit is electrically connected with the antenna selection circuit. The embodiment of the invention can determine whether the currently accessed external antenna is an antenna matched with the CPE or not through specific voltage comparison; when the CPE detects the preset voltage, the antenna switch is switched to the external antenna from the internal antenna circuit, when the CPE does not detect the preset voltage, the antenna switch can be always connected with the internal antenna, the external antenna is not matched in the prompt of a user interaction interface, the antenna circuit is selected by comparing voltage signals and selecting a switch control pin according to the voltage signals, and the client side can only be configured with the specified external antenna to the CPE.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to an antenna selection circuit structure, an antenna selection method and client front-end equipment.
Background
With the continuous development of communication technology, a great deal of terminals such as smart phones, tablet computers and notebook computers are widely popularized and applied, the terminals are developed towards diversification and personalization directions and increasingly become indispensable terminals in life and work of people, and nowadays, the terminals such as the mobile phones and the tablet computers become electronic devices which are carried by people daily, so that more and more operators begin to explore large-scale use of Customer Premise Equipment (CPE) in order to provide users with high-speed broadband services which are more stable and reliable and are comparable to optical fibers. The CPE is mobile signal access equipment which receives mobile signals and forwards the mobile signals by wireless WIFI signals, is equipment which converts high-speed 4G or 5G signals into WIFI signals, can support the number of mobile terminals which access the internet at the same time, can be widely applied to wireless network access in rural areas, towns, hospitals, units, factories, cells and the like, and can save the cost of laying a network.
In the research and practice process of the prior art, the inventor of the embodiment of the invention finds that the CPE has two sets of internal and external antenna systems to simultaneously meet different scene requirements of users, the interfaces of the common antenna systems are all in standard configuration, such as 50 Ω SMA interfaces and the like, the external antennas in the market are different in quality, the actual user experience difference caused by the external antennas with different performances is large, and when the user side adopts the unmatched external antennas, the CPE has poor effect and unstable signals during signal transmission, and the performance of the CPE is affected, so that the user experience is affected.
Disclosure of Invention
The embodiment of the invention provides an antenna selection circuit structure, an antenna selection method and customer premises equipment, which can ensure the stability of the performance of CPE by accessing a specific external antenna.
In a first aspect, an embodiment of the present invention provides an antenna selection circuit structure, where the antenna selection circuit structure includes: the antenna comprises an antenna interface, an antenna voltage detection circuit, a judgment circuit, an antenna interface circuit, an antenna selection circuit and an internal antenna circuit, wherein the interface is electrically connected with the antenna interface circuit, the antenna voltage detection circuit is electrically connected with the judgment circuit, the antenna selection circuit is electrically connected with the internal antenna circuit, a first end of the antenna interface circuit is electrically connected with the antenna selection circuit, a second end of the antenna interface circuit is electrically connected with the antenna voltage detection circuit, the antenna interface is used for being connected with an external antenna, and a second end of the antenna interface circuit is electrically connected with the external antenna.
Optionally, in some embodiments of the present invention, the antenna voltage detection circuit includes a first resistor, a second resistor, a third resistor, a first power voltage, a first capacitor, and a first inductor, the first power voltage is electrically connected to ground through the first resistor, the second resistor, and the third resistor connected in series, a connection circuit is connected between the first resistor and the second resistor, the connection circuit is composed of the first capacitor and the first inductor, and the connection circuit is configured to electrically connect the antenna voltage detection circuit to the antenna selection circuit.
Optionally, in some embodiments of the present invention, the determining circuit includes an analog-to-digital converter and a determining module, the analog-to-digital converter is connected in parallel between the second resistor and the third resistor and forms a voltage detecting point, the analog-to-digital converter is electrically connected to the determining module, the analog-to-digital converter is configured to obtain a voltage value to be detected of the voltage detecting point, the determining module is configured to determine whether the voltage value to be detected matches a preset voltage value, and the determining module is electrically connected to the antenna selecting circuit.
Optionally, in some embodiments of the present invention, the antenna selection circuit includes a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin, the first pin is used to electrically connect to the antenna interface circuit, the second pin is used to ground, the third pin is used to electrically connect to the internal antenna circuit, the fourth pin is used to electrically connect to the determination module, the fourth pin is used to control the on-off states of the first pin and the second pin, and the fifth pin is used to electrically connect to the radio frequency module.
Optionally, in some embodiments of the present invention, the antenna interface circuit includes a third capacitor and a third inductor, the third capacitor is connected in series between the antenna selection circuit and the antenna voltage detection circuit, the third inductor is connected in parallel between the third capacitor and the antenna selection circuit, and the third inductor is electrically connected to ground.
Optionally, in some embodiments of the present invention, the antenna selection circuit is electrically connected to the internal antenna circuit by connecting a second capacitor in series, and a second inductor is connected in parallel between the second capacitor and the antenna selection circuit, and the second inductor is electrically connected to ground.
Optionally, in some embodiments of the present invention, the external antenna circuit includes a fourth inductor and a fourth resistor, where the fourth inductor and the fourth resistor are used to isolate a high-frequency signal.
In a second aspect, an embodiment of the present invention provides an antenna selection method, which is applied to the antenna selection circuit structure recited in claim 1, and includes:
detecting the voltage value at the voltage detection point to obtain a voltage value to be detected;
acquiring a preset voltage value in the judging module;
and selecting an antenna circuit for signal transmission according to the voltage value to be detected and a preset voltage value.
Optionally, in some embodiments of the present invention, the selecting an antenna circuit according to the voltage value to be detected and a preset voltage value for signal transmission includes:
the antenna circuit comprises an internal antenna and an external antenna;
when the voltage value to be detected is not equal to a preset voltage value, the fourth pin controls the third pin to maintain an on state, and the built-in antenna is adopted for signal transmission;
when the voltage value to be detected is equal to a preset voltage value, the fourth pin controls the first pin to maintain an on state, the fourth pin controls the third pin to maintain an off state, and the external antenna is used for signal transmission.
In a third aspect, an embodiment of the present invention provides a client front-end device, where the client front-end device includes the antenna selection circuit structure of the first aspect, and is capable of executing the antenna selection method of the second aspect.
The embodiment of the invention provides an antenna selection circuit structure, an antenna selection method and customer premises equipment, wherein whether a currently accessed external antenna is an antenna matched with CPE or not can be determined through specific voltage comparison; when the CPE detects the preset voltage, the antenna switch is switched to the external antenna from the internal antenna circuit, when the CPE does not detect the preset voltage, the antenna switch can be always connected with the internal antenna, the external antenna is not matched in the prompt of a user interaction interface, the antenna circuit is selected by comparing voltage signals and selecting a switch control pin according to the voltage signals, and the client side can only be configured with the specified external antenna to the CPE.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a first structural schematic diagram of an antenna selection circuit structure according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a second structure of an antenna selection circuit structure according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a third antenna selection circuit structure according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a fourth structure of an antenna selection circuit structure according to an embodiment of the present invention.
Fig. 5a is an equivalent circuit diagram of an antenna selection circuit structure according to an embodiment of the present invention.
Fig. 5b is another equivalent circuit diagram of the antenna selection circuit structure according to the embodiment of the present invention.
Fig. 6 is a flowchart illustrating an antenna selection method according to an embodiment of the present invention.
Fig. 7 is a block diagram of a terminal according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the 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.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "" means two or more unless specifically defined otherwise.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials. In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The embodiment of the invention provides an antenna selection circuit structure, an antenna selection method and customer premises equipment. The antenna selection circuit structure and the antenna selection method can be suitable for client front-end equipment, the client front-end equipment can be matched with a terminal for use, such as a mobile phone, a tablet computer, a notebook computer or a personal computer, and the client front-end equipment is wireless terminal access equipment for receiving wifi signals and can replace wireless client equipment such as a wireless network card. The customer premises equipment can receive wireless signals of a wireless router, a wireless AP, a wireless base station and the like, is novel wireless terminal access equipment, is also equipment for converting high-speed 4G signals into WiFi signals, needs an external power supply, and has a large number of mobile terminals capable of supporting internet surfing at the same time. The antenna selection circuit structure, the antenna selection method, and the client-side device will be described in detail below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.
The present invention will be described in detail with reference to the drawings and the detailed description, referring to fig. 1 to 7.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, fig. 1 is a circuit structure for selecting an antenna according to an embodiment of the present invention, where the circuit structure for selecting an antenna includes: the antenna system comprises an antenna interface 62, an antenna voltage detection circuit a1, a judgment circuit a6, an antenna interface circuit a5, an antenna selection circuit a2 and an internal antenna circuit a3, wherein the interface is electrically connected with the antenna interface circuit a5, the antenna voltage detection circuit a1 is electrically connected with the judgment circuit a6, the antenna selection circuit a2 is electrically connected with the internal antenna circuit a3, a first end of the antenna interface circuit a5 is electrically connected with the antenna selection circuit a2, a second end of the antenna interface circuit a5 is electrically connected with the antenna voltage detection circuit a1, the antenna interface 62 is used for accessing an external antenna a7, and a second end of the antenna interface circuit a5 is electrically connected with the external antenna a 7.
Referring to fig. 1, in the embodiment of the present invention, the antenna voltage detection circuit a1 includes a first resistor 11, a second resistor 12, a third resistor 13, a first power voltage 51, a first capacitor 21 and a first inductor 31, the first supply voltage 51 is electrically connected to ground via the first resistor 11, the second resistor 12 and the third resistor 13 connected in series, a connecting circuit is connected between the first resistor 11 and the second resistor 12, the connecting circuit is composed of a first capacitor 21 and a first inductor 31, the connection circuit is used for electrically connecting the antenna voltage detection circuit a1 with the antenna selection circuit a2, the connecting circuit is used for conducting the voltage of the direct current signal to the antenna and preventing the high-frequency signal from being fed back to the antenna voltage detection circuit a1 to influence the voltage detection.
Referring to fig. 2, in particular, in the embodiment of the present invention, the determining circuit a6 includes an analog-to-digital converter a61 and a determining module a62, the analog-to-digital converter a61 is connected in parallel between the second resistor 12 and the third resistor 13 and forms a voltage detection point b, the analog-to-digital converter a61 is electrically connected to the determination module a62, the analog-to-digital converter a61 is configured to obtain a voltage value to be detected at the voltage detection point b, the judging module a62 is used for judging whether the voltage value to be detected is matched with a preset voltage value, the judging module a62 is electrically connected to the antenna selecting circuit a2, the analog-to-digital converter a61 is connected in parallel between the second resistor 12 and the third resistor 13 at the voltage detecting point b, therefore, the voltage of the voltage detection point b is detected, and whether the internal antenna is connected or the external antenna a7 meeting the preset voltage is judged by detecting the voltage of the voltage detection point b.
Referring to fig. 1 and fig. 2 together, in an embodiment of the present invention, the antenna selection circuit a2 includes a first pin 41, a second pin 42, a third pin 43, a fourth pin 44, a fifth pin 45 and a sixth pin 46, the first pin 41 is used for electrically connecting with the antenna interface circuit a5, the first pin 41 is electrically connected with the external antenna a7 and the antenna voltage detection circuit a1 through the antenna interface circuit a5, the second pin 42 is used for grounding, the third pin 43 is used for electrically connecting with the built-in antenna circuit a3, the fourth pin 44 is used for electrically connecting with the determining module a62, the fourth pin 44 is used for controlling the on/off states of the first pin 41 and the second pin 42, the fifth pin 4545 is a common terminal, and the fifth pin 45 is used for electrically connecting with the rf module a 4.
Referring to fig. 1, in particular, in the embodiment of the present invention, the antenna interface circuit a5 includes a third capacitor 23 and a third inductor 33, the third capacitor 23 is connected in series between the antenna selection circuit a2 and the antenna voltage detection circuit a1, the third inductor 33 is connected in parallel between the third capacitor 23 and the antenna selection circuit a2, and the third inductor 33 is electrically connected to ground.
Referring to fig. 1, in the embodiment of the present invention, the antenna selection circuit a2 is electrically connected to the internal antenna circuit a3 by connecting a second capacitor 22 in series, a second inductor 32 is connected in parallel between the second capacitor 22 and the antenna selection circuit a2, and the second inductor 32 is electrically connected to ground.
Specifically, in the embodiment of the present invention, the external antenna circuit a5 includes a fourth inductor (not shown in the figure) and a fourth resistor 14, and the fourth inductor and the fourth resistor 14 are used for isolating high-frequency signals.
Specifically, in the embodiment of the present invention, the internal antenna includes two parts, namely, an antenna radiation pedestal (patten) and an antenna ground pedestal (patten). The antenna ground pattern is connected with the outer layer of a cable (cable), and the antenna radiation pattern is connected with the inner layer of the cable; the external antenna comprises two parts, namely an antenna radiation pattern and an antenna ground pattern. The antenna ground pattern is connected with the outer layer of the cable, the antenna radiation pattern is connected with the inner layer of the cable, a fourth inductor and a fourth resistor are connected between the antenna radiation pattern and the antenna ground pattern in series, the fourth inductor can be 470nH, and the fourth resistor can be 10 kilo-ohm, so that a high-frequency signal is isolated from the ground, and the loss of the high-frequency signal is avoided.
The implementation principle of the antenna selection circuit structure of the embodiment of the invention is as follows:
since the impedance between the radiation pattern of the built-in antenna (conventional antenna) and the antenna ground pattern is infinite, the voltage value obtained at the antenna voltage detection point b is:
please refer to fig. 5a, wherein R1Is a first resistor 11, R2Is a second resistor 12, R3Is a third resistorAnd 13, in an equivalent circuit diagram, the first resistor, the second resistor and the third resistor are connected in series, the voltage monitoring point is positioned between the second resistor and the third resistor, and the voltage value to be detected is calculated according to the formula.
In the embodiment of the present invention, since the dc impedance of the external antenna corresponding to the preset voltage between the antenna radiation pattern and the antenna ground pattern is a fourth resistor, the voltage value obtained at the antenna voltage detection point b is:
please refer to fig. 5b, wherein R1Is a first resistor 11, R2Is a second resistor 12, R3Is a third resistor 13, R4The voltage detection circuit is a fourth resistor 14, in an equivalent circuit diagram, the first resistor, the second resistor and the third resistor are connected in series, the fourth resistor is connected between the second resistor and the third resistor, the third resistor and the fourth resistor can be equivalent to a resistor R5, a voltage monitoring point is located between the second resistor and the third resistor, and a voltage value to be detected is calculated according to the formula.
When the external antenna corresponding to the preset voltage is connected to the CPE, the direct-current voltage at the antenna end is divided, and the divided voltage is inconsistent with the voltage of the conventional antenna, so that whether the antenna is a special antenna can be judged by comparison. And finally, selecting the use of the internal antenna or the external antenna by selecting a switch control pin according to the comparison voltage signal.
In summary, the embodiment of the present invention provides an antenna selection circuit a2 structure, where the antenna selection circuit a2 structure includes: the antenna comprises a radio frequency module a4, an antenna voltage detection circuit a1, an antenna selection circuit a2 and an internal antenna circuit a3, wherein the radio frequency module a4 is electrically connected with the antenna selection circuit a2, the antenna selection circuit a2 is electrically connected with the internal antenna circuit a3, the antenna voltage detection circuit a1 is electrically connected with the antenna selection circuit a2, and whether the currently accessed external antenna is an antenna matched with the CPE can be determined through specific voltage comparison; when the CPE detects the preset voltage, the antenna switch is switched to the external antenna from the internal antenna circuit, when the CPE does not detect the preset voltage, the antenna switch can be always connected with the internal antenna, the external antenna is not matched in the prompt of a user interaction interface, the antenna circuit is selected by comparing voltage signals and selecting a switch control pin according to the voltage signals, and the client side can only be configured with the specified external antenna to the CPE.
Referring to fig. 6, fig. 6 is a schematic flowchart of an antenna selection method according to an embodiment of the present invention, where the antenna selection method can be applied to the antenna selection circuit structure, and the method includes:
601. detecting the voltage value at the voltage detection point to obtain a voltage value to be detected;
specifically, in the embodiment of the present invention, the voltage value to be detected is obtained by the antenna voltage detection circuit.
602. Acquiring a preset voltage value in the judging module;
specifically, in the embodiment of the present invention, the preset voltage value in the determining module is obtained.
603. And turning on or turning off the antenna circuit according to the voltage value to be detected and a preset voltage value.
Specifically, in the embodiment of the present invention, the antenna circuit includes an internal antenna circuit and an external antenna circuit;
the antenna selection circuit comprises a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin, wherein the first pin is used for being electrically connected with the antenna interface circuit, the second pin is used for being grounded, the third pin is used for being electrically connected with the built-in antenna circuit, the fourth pin is used for being electrically connected with the judgment module, the fourth pin is used for controlling the on-off state of the first pin and the second pin, and the antenna circuit is turned on or off according to the voltage value to be detected and a preset voltage value, and the following two conditions specifically exist:
optionally, in the first case, when the voltage value to be detected does not satisfy a preset voltage value, the fourth pin controls the third pin to maintain an on state, and the built-in antenna is used for signal transmission;
optionally, in the second case, when the voltage value to be detected meets a preset voltage value, the fourth pin controls the first pin to maintain an on state, the fourth pin controls the third pin to maintain an off state, and the external antenna is used for signal transmission.
In summary, the embodiment of the present invention provides an antenna selection method, which can determine whether a currently accessed external antenna is an antenna matched with a CPE through a specific voltage comparison; when the CPE detects the preset voltage, the antenna switch is switched to the external antenna from the internal antenna circuit, when the CPE does not detect the preset voltage, the antenna switch can be always connected with the internal antenna, the external antenna is not matched in the prompt of a user interaction interface, the antenna circuit is selected by comparing voltage signals and selecting a switch control pin according to the voltage signals, and the client side can only be configured with the specified external antenna to the CPE.
The above is described in detail from the perspective of the antenna selection circuit structure and the antenna selection method, and the following is described in the customer premises equipment provided in the embodiment of the present invention. The embodiment of the invention also provides a client front-end device, which comprises the antenna selection circuit structure.
The above is described in detail from the perspective of the antenna selection circuit structure, the antenna selection method, and the customer premises equipment, and the like, and the following is described in detail from the perspective of the antenna selection circuit structure, the antenna selection method, and the terminal equipment that can be matched by the customer premises equipment provided in the embodiments of the present invention. An embodiment of the present invention further provides a terminal, as shown in fig. 7, which shows a schematic structural diagram of a terminal according to an embodiment of the present invention, where the terminal may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like, and specifically:
as shown in fig. 7, the terminal may include Radio Frequency (RF) circuitry 701, memory 702 including one or more computer-readable storage media, input unit 703, display unit 704, sensor 705, audio circuitry 706, Wireless Fidelity (Wi-Fi) module 707, processor 708 including one or more processing cores, and power supply 709. Those skilled in the art will appreciate that the terminal structure shown in fig. 7 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. Wherein:
the RF circuit 701 may be used for receiving and transmitting signals during a message transmission or communication process, and in particular, for receiving downlink information of a base station and then sending the received downlink information to the one or more processors 708 for processing; in addition, data relating to uplink is transmitted to the base station. In general, RF circuitry 701 includes, but is not limited to, an antenna, at least one Amplifier, a tuner, one or more oscillators, a Subscriber Identity Module (SIM) card, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, RF circuit 701 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), and the like. The antenna unit, the antenna matching unit and the radio frequency module provided by the embodiment of the invention can be used for receiving and sending signals in the process of receiving and sending information or calling so as to achieve the operation required by a user.
The memory 702 may be used to store software programs and modules, and the processor 708 executes various functional applications and data processing by operating the software programs and modules stored in the memory 702. The memory 702 may mainly include a program storage area and a data storage area, wherein the program storage 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 terminal, etc. Further, the memory 702 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. Accordingly, the memory 702 may also include a memory controller to provide the processor 708 and the input unit 703 access to the memory 702.
The input unit 703 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, in a particular embodiment, the input unit 703 may include a touch-sensitive surface as well as other input devices. The touch-sensitive surface, also referred to as a touch display screen or a touch pad, may collect touch operations by a user (e.g., operations by a user on or near the touch-sensitive surface using a finger, a stylus, or any other suitable object or attachment) thereon or nearby, and drive the corresponding connection device according to a predetermined program. Alternatively, the touch sensitive surface 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 708, and can receive and execute commands sent by the processor 708. In addition, touch sensitive surfaces may be implemented using various types of resistive, capacitive, infrared, and surface acoustic waves. The input unit 703 may include other input devices in addition to the touch-sensitive surface. In particular, other input devices 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 704 may be used to display information input by or provided to the user and various graphical user interfaces of the terminal, which may be made up of graphics, text, icons, video, and any combination thereof. The Display unit 704 may include a Display panel, and optionally, the Display panel may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch-sensitive surface may overlay the display panel, and when a touch operation is detected on or near the touch-sensitive surface, the touch operation is communicated to the processor 708 to determine the type of touch event, and the processor 708 provides a corresponding visual output on the display panel according to the type of touch event.
The terminal may also include at least one sensor 705, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel according to the brightness of ambient light, and a proximity sensor that may turn off the display panel and/or the backlight when the terminal 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 can be configured in the terminal, detailed description is omitted here.
Wi-Fi belongs to short-distance wireless transmission technology, and the terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through a Wi-Fi module 707, and provides wireless broadband internet access for the user. Although fig. 7 shows the Wi-Fi module 707, it is understood that it does not belong to the essential constitution of the terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.
The processor 708 is a control center of the terminal, connects various parts of the entire handset using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 702 and calling data stored in the memory 702, thereby performing overall monitoring of the handset. Optionally, processor 708 may include one or more processing cores; preferably, the processor 708 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 708.
The terminal also includes a power source 709 (e.g., a battery) for powering the various components, which may preferably be logically coupled to the processor 708 via a power management system that may be configured to manage charging, discharging, and power consumption. The power supply 709 may also include any component of one or more dc or ac power sources, recharging systems, power failure detection circuitry, power converters or inverters, power status indicators, and the like.
Although not shown, the terminal may further include a camera, a bluetooth module, and the like, which will not be described herein. Specifically, in this embodiment, the processor 708 in the terminal loads the executable file corresponding to the process of one or more application programs into the memory 702 according to the following instructions, and the processor 708 runs the application programs stored in the memory 702, thereby implementing various functions.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. The embodiments described above are only a part of the embodiments of the present invention, and not all of them. All other embodiments, such as circuits capable of debugging a plurality of antenna structures by adding an impedance matching circuit, which are mentioned in the embodiments of the present invention, are obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention, and all the other embodiments are within the protection scope of the present invention.
The antenna selection circuit structure, the antenna selection method and the client front-end device provided by the embodiment of the invention are introduced in detail, a specific example is applied in the embodiment of the invention to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. An antenna selection circuit structure, comprising: the antenna comprises an antenna interface, an antenna voltage detection circuit, a judgment circuit, an antenna interface circuit, an antenna selection circuit and an internal antenna circuit, wherein the interface is electrically connected with the antenna interface circuit, the antenna voltage detection circuit is electrically connected with the judgment circuit, the antenna selection circuit is electrically connected with the internal antenna circuit, a first end of the antenna interface circuit is electrically connected with the antenna selection circuit, a second end of the antenna interface circuit is electrically connected with the antenna voltage detection circuit, the antenna interface is used for being connected with an external antenna, the external antenna comprises an external antenna, and a second end of the antenna interface circuit is electrically connected with the external antenna circuit.
2. The antenna selection circuit structure according to claim 1, wherein the antenna voltage detection circuit includes a first resistor, a second resistor, a third resistor, a first power supply voltage, a first capacitor, and a first inductor, the first power supply voltage is electrically connected to ground through the first resistor, the second resistor, and the third resistor connected in series, a connection circuit is connected between the first resistor and the second resistor, the connection circuit is composed of the first capacitor and the first inductor, and the connection circuit is configured to electrically connect the antenna voltage detection circuit to the antenna selection circuit.
3. The antenna selection circuit structure of claim 2, wherein the determination circuit comprises an analog-to-digital converter and a determination module, the analog-to-digital converter is connected in parallel between the second resistor and the third resistor and forms a voltage detection point, the analog-to-digital converter is electrically connected to the determination module, the analog-to-digital converter is configured to obtain a voltage value to be detected of the voltage detection point, the determination module is configured to determine whether the voltage value to be detected matches a preset voltage value, and the determination module is electrically connected to the antenna selection circuit.
4. The antenna selection circuit structure of claim 3, wherein the antenna selection circuit comprises a first pin, a second pin, a third pin, a fourth pin, a fifth pin and a sixth pin, the first pin is electrically connected to the antenna interface circuit, the second pin is electrically connected to ground, the third pin is electrically connected to the internal antenna circuit, the fourth pin is electrically connected to the determination module, the fourth pin is used for controlling the on/off states of the first pin and the second pin, and the fifth pin is electrically connected to a radio frequency module.
5. The antenna selection circuit structure of claim 1, wherein the antenna interface circuit comprises a third capacitor and a third inductor, the third capacitor being connected in series between the antenna selection circuit and the antenna voltage detection circuit, the third capacitor and the antenna selection circuit being connected in parallel with the third inductor, the third inductor being electrically connected to ground.
6. The antenna selection circuit structure of claim 1, wherein the antenna selection circuit is electrically connected to the internal antenna circuit by connecting a second capacitor in series, and a second inductor is connected in parallel between the second capacitor and the antenna selection circuit and electrically connected to ground.
7. The antenna selection circuit structure of claim 1, wherein the external antenna circuit comprises a fourth inductor and a fourth resistor, and the fourth inductor and the fourth resistor are used for isolating high-frequency signals.
8. An antenna selection method applied to the antenna selection circuit structure of claim 3 and claim 4, comprising:
detecting the voltage value at the voltage detection point to obtain a voltage value to be detected;
acquiring a preset voltage value in the judging module;
and selecting an antenna for signal transmission according to the voltage value to be detected and a preset voltage value.
9. The antenna selection method according to claim 8, wherein selecting the antenna circuit for signal transmission according to the voltage value to be detected and a preset voltage value comprises:
the antenna circuit comprises an internal antenna and an external antenna;
when the voltage value to be detected is not equal to a preset voltage value, the fourth pin controls the third pin to maintain an on state, and the built-in antenna is adopted for signal transmission;
when the voltage value to be detected is equal to a preset voltage value, the fourth pin controls the first pin to maintain an on state, the fourth pin controls the third pin to maintain an off state, and the external antenna is used for signal transmission.
10. A customer premises equipment comprising an antenna selection circuit arrangement as claimed in any one of claims 1 to 7, capable of performing the antenna selection method as claimed in any one of claims 8 and 9.
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| CN202011144544.7A CN112350743B (en) | 2020-10-23 | 2020-10-23 | Antenna selection circuit structure, antenna selection method and customer premises equipment |
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| CN112350743B (en) | 2022-05-06 |
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