Electronic device

Abstract

The utility model provides electronic equipment. The electronic equipment comprises a T antenna, a main board, a middle frame and an auxiliary board, the middle frame is provided with an opening; the auxiliary board is inserted into the first side of the main board through the opening, and the first side refers to one side close to a display screen of the electronic equipment; and the auxiliary board is used for electrically connecting the first tuning circuit with the T antenna. According to the embodiment, the auxiliary plate can be inserted into the opening formed in the middle frame, the effect of adjusting the working frequency band of the T antenna is achieved, and therefore the working performance of the T antenna is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of antenna technology, and in particular to an electronic device. Background Art

[0002] Existing electronic devices are usually equipped with antennas for multiple frequency bands, such as T antennas. Among them, T antennas are usually a vertically grounded antenna, which is composed of a vertical down conductor connected to the center of a horizontal conductor. The radiation of the T antenna mainly comes from its vertical part, while the radiation of the horizontal part can be ignored. It is mainly used for communication in the medium and low frequency bands. Utility Model Content

[0003] The present disclosure provides an electronic device to solve the above technical problems.

[0004] According to a first aspect of the present disclosure, an electronic device is provided, comprising: a T antenna, a main board, a middle frame and a sub-board; the middle frame is provided with an opening; the sub-board is inserted into a first side of the main board through the opening, the first side refers to a side close to a display screen of the electronic device; and the sub-board is used to electrically connect a first tuning circuit with the T antenna.

[0005] Optionally, the middle frame includes a first partition bar and a second partition bar; a portion of the middle frame located between the first partition bar and the second partition bar constitutes a parasitic branch of the T antenna.

[0006] Optionally, the electronic device further comprises a battery compartment, and the parasitic branch is arranged opposite to the battery compartment.

[0007] Optionally, at least one switching device is provided on the sub-board; the at least one switching device is used to electrically connect the first tuning circuit with the parasitic branch of the T antenna.

[0008] Optionally, the first tuning circuit is arranged on the secondary board, and a grounding point of the secondary board is electrically connected to a grounding point of the main board.

[0009] Optionally, the first tuning circuit is arranged on the mainboard, and input and output pins of the first tuning circuit are electrically connected to matching pins on the mainboard.

[0010] Optionally, the electronic device further comprises a processor, wherein the processor is connected to at least one switching device circuit on the sub-board and is used to control the on / off state of each switching device in the at least one switching device.

[0011] Optionally, the electronic device further includes a waterproof adhesive; the waterproof adhesive is arranged on the first side of the mainboard, and the waterproof adhesive is provided with a bend matching the size of the opening at the opening of the middle frame.

[0012] Optionally, the first tuning circuit includes at least one capacitor, at least one inductor, or a combination of a capacitor and an inductor; and a parasitic resonant frequency of the first tuning circuit is located in the B28, B5 and B8 frequency bands.

[0013] Optionally, the T antenna includes a first branch, a second branch, a feed point, a location and a second tuning circuit; the first branch is vertically arranged to the second branch; the first branch is electrically connected to the feed point and the location respectively, and the second branch is electrically connected to the second tuning circuit.

[0014] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0015] The electronic device provided in this embodiment includes a T antenna, a main board, a middle frame and a sub-board; the middle frame is provided with an opening; the sub-board is inserted into the first side of the main board through the opening, the first side being the side close to the display screen of the electronic device; and the sub-board is used to electrically connect the first tuning circuit to the T antenna. In this way, in this embodiment, the sub-board can be inserted by providing an opening in the middle frame, so as to achieve the effect of adjusting the working frequency band of the T antenna, thereby improving the working performance of the T antenna.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the structure of a T antenna of an electronic device according to an embodiment of the present disclosure.

[0018] Figure 2 The present invention is a schematic structural diagram of a middle frame, waterproof adhesive and sub-board of an electronic device according to an embodiment of the present invention.

[0019] Figure 3 The present invention is a schematic structural diagram of an opening on a middle frame according to an embodiment of the present invention.

[0020] Figure 4 The figure is a circuit diagram of a first tuning circuit according to an embodiment of the present disclosure.

[0021] Figure 5 The figure is a cross-sectional view of an electronic device in the X direction according to an embodiment of the present disclosure.

[0022] Figure 6 This is a simulation diagram of the overall efficiency of a T-antenna according to an embodiment of the present disclosure.

[0023] Figure 7 The present invention is a block diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0025] In order to solve the above technical problems, the present disclosure provides an electronic device. Figure 1 , the electronic device includes a T antenna 10. The T antenna 10 includes a first branch 11, a second branch 12, a feed point 13, a location 14, and a second tuning circuit 15; the first branch 11 and the second branch 12 are vertically arranged; the first branch 11 is electrically connected to the feed point 13 and the location 14, respectively, and the second branch 12 is electrically connected to the second tuning circuit 15. When the switch device in the second tuning circuit 15 is switched to the on state, the capacitor, inductor and / or resistor can be electrically connected to the second branch, thereby adjusting the impedance characteristics between the feed point 13 and the ground. The signal source can output a radio frequency signal through the feed point 13 or receive an electrical signal corresponding to the radio frequency signal through the feed point 13, so as to achieve the effect of the electronic device sending and receiving signals.

[0026] In one embodiment, the operating frequency of the T antenna 10 is the B28 band, the B5 band and / or the B8 band. Among them, the downlink frequency of the B28 band is 703-748 MHz and the uplink frequency is 758-803 MHz. The downlink frequency of the B5 band is 824-849 MHz and the uplink frequency is 869-894 MHz. The downlink frequency of the B8 frequency is 880-915 MHz and the uplink frequency is 925-960 MHz. It is understandable that those skilled in the art can select the operating frequency of the T antenna according to the specific scenario, and the corresponding scheme falls within the protection scope of the present disclosure.

[0027] In one embodiment, the second tuning circuit 15 can be implemented using at least one capacitor, at least one inductor, or a combination of a capacitor and an inductor. When the resonant frequency can be achieved in the B28 band, the B5 band and / or the B8 band, the corresponding scheme falls within the protection scope of the present disclosure.

[0028] In one embodiment, the electronic device further includes a main board 21, a middle frame 22 and a sub-board 23. Figure 2, the main board 21 can be fixed on the middle frame 22. The middle frame 22 is provided with an opening 231. The opening direction of the opening 231 is parallel to the plane where the middle frame 22 is located; in other words, when the electronic device includes a display screen and the display screen is facing the user, the above opening 221 is located on the side of the electronic device. In this way, the sub-board 23 can be inserted into the interior of the electronic device through the above opening 231 and is located on the first side of the main board, and the first side refers to the side close to the display screen of the electronic device. In this way, this embodiment can facilitate the insertion of the sub-board 23 into the electronic device by providing an opening in the middle frame 22, and facilitate electrical connection with the T antenna 10.

[0029] In one embodiment, see Figure 2 , the middle frame 22 includes a first partition bar 222 and a second partition bar 223. The middle frame portion of the middle frame 22 located between the first partition bar 222 and the second partition bar 223 constitutes a parasitic branch 224 of the T antenna 10. In this embodiment, the length of the parasitic branch 224 ranges from 1 to 10 cm, for example, 4 cm; by extending the length of the parasitic branch 224, the T antenna 10 generates a parasitic resonance at a certain frequency, and the parasitic resonance frequency is set after the working frequency band of the T antenna. At this time, the parasitic branch is opposite to the current of the main radiation arm at the parasitic resonance frequency, thereby generating an efficiency pit, pushing up the antenna efficiency of the T antenna 10 in the working frequency band. In other words, in this embodiment, by generating the length of the parasitic branch 224, the effect of improving the performance of the T antenna in the working frequency band is achieved.

[0030] In one embodiment, see Figure 2 The electronic device further includes a battery compartment 16. The parasitic branch 224 is arranged opposite to the battery compartment 16, that is, the parasitic branch 224 is arranged on the side of the battery compartment 16 opposite to the middle frame. Considering that the battery compartment 16 is usually arranged at the bottom of the electronic device (and the antenna is usually arranged at the top), by arranging the parasitic branch 224 on one side of the battery compartment 16, the length of the T antenna 10 can be increased, thereby achieving the effect of improving the antenna performance.

[0031] In one embodiment, see Figure 2 The middle frame 22 is provided with an opening 231. The sub-board 23 can be inserted into the first side of the main board 21 through the opening 231. In the case where the electronic device includes a display screen, the first side refers to a side close to the display screen of the electronic device. When the sub-board 23 is inserted into the electronic device, the sub-board 23 can electrically connect the first tuning circuit to the T antenna 10 to achieve the effect of adjusting the antenna performance of the T antenna 10.

[0032] In one embodiment, see Figure 4, the first tuning circuit 241 can be set on the main board 21. At this time, the sub-board 23 can be provided with a pin, which is electrically connected to the first tuning circuit 241 on the main board 21. Since the sub-board 23 is also electrically connected to the middle frame 22, specifically, the sub-board 23 is electrically connected to the parasitic branch 224 of the middle frame 22, the first tuning circuit 241 can be electrically connected to the parasitic branch 224 through the sub-board 23. In this way, the impedance of the parasitic branch can be adjusted through the first tuning circuit 241, so as to achieve the effect of adjusting the parasitic resonant frequency of the T antenna.

[0033] In one embodiment, the first tuning circuit 241 may be disposed on the sub-board 23. At this time, the grounding point of the sub-board 23 may be electrically connected to the grounding point of the main board, or may be electrically connected to the grounding point of the middle frame 22. Finally, the first tuning circuit 241 may be electrically connected to the parasitic branch 224. In this way, the impedance of the parasitic branch 224 may be adjusted through the first tuning circuit 241, thereby achieving the effect of adjusting the parasitic resonant frequency of the T antenna 10.

[0034] In one embodiment, the first tuning circuit 241 can be implemented using at least one capacitor, at least one resistor, at least one inductor, or a combination. When the resonant frequency can be achieved in the B28 band, the B5 band and / or the B8 band, the corresponding scheme falls within the protection scope of the present disclosure.

[0035] In one embodiment, see Figure 4 At least one switch device is also provided on the sub-board 23, such as Figure 4 At least one switch device is used to electrically connect the first tuning circuit (all or part) to the parasitic branch 224 of the T antenna 10. In this way, by connecting part or all of the first tuning circuit to the parasitic branch 224, the impedance relationship of the T antenna 10 can be adjusted to achieve the effect of adjusting the parasitic resonant frequency of the T antenna 10.

[0036] In one embodiment, the electronic device further includes a processor. The processor is connected to at least one switching device circuit on the sub-board 23, and is used to control the on-off state of each switching device in the at least one switching device, so as to achieve the effect of electrically connecting the first tuning circuit (all or part) to the parasitic branch 224. In this embodiment, the switching device can be implemented by a device or a combination of devices having an on state and an off state, such as a relay, a transistor, or a field effect transistor, and the corresponding switching device and the corresponding solution can be selected according to the specific scenario and fall within the protection scope of the present disclosure.

[0037] In one embodiment, see Figure 3The electronic device further includes a waterproof adhesive 24. The waterproof adhesive 24 is disposed on the first side of the mainboard 21, and the waterproof adhesive 24 is provided with a bend matching the size of the opening 231 at the opening 231 of the middle frame 22. Figure 5 ,exist Figure 3 On the basis of the electronic device shown, when the middle frame is seen along the X direction, the bend 251 can avoid the opening 231 and the sub-board 23, so that the sub-board 23 can prevent and ensure the waterproofness of the whole device.

[0038] exist Figure 1 to Figure 5 The efficiency of the T antenna 10 is simulated based on the electronic device shown in the example, and the Figure 6 The effect of the example. Figure 6 , Curve 1 represents the overall efficiency of the antenna when the T antenna 10 in this solution works in the B5 frequency band, and Curve 2 represents the overall efficiency of the antenna when the T antenna 10 in the related art works in the B5 frequency band, Figure 6 The B5_1 frequency band is used to represent the B5 frequency band in which the T antenna 10 works in the related art, and the other working frequency bands are represented in the same way; Curve 3 represents the overall efficiency of the antenna when the T antenna 10 works in the B6 frequency band in this solution, and Curve 4 represents the overall efficiency of the antenna when the T antenna 10 works in the B6_1 frequency band in the related art; Curve 5 represents the overall efficiency of the antenna when the T antenna 10 works in the B28 frequency band in this solution, and Curve 6 represents the overall efficiency of the antenna when the T antenna 10 works in the B28_1 frequency band in the related art. It can be seen that the T antenna 10 achieves efficiency improvement in the low-frequency B28 / B5 / B8 full frequency band, improving the user signal experience.

[0039] So far, the electronic device provided in this embodiment includes a T antenna, a main board, a middle frame and a sub-board; the middle frame is provided with an opening; the sub-board is inserted into the first side of the main board through the opening, and the first side refers to the side close to the display screen of the electronic device; and the sub-board is used to electrically connect the first tuning circuit to the T antenna. In this way, in this embodiment, the sub-board can be inserted by providing an opening in the middle frame, so as to achieve the effect of adjusting the working frequency band of the T antenna, thereby improving the working performance of the T antenna.

[0040] Figure 7 7 is a block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 700 may be a smart phone, a computer, a digital broadcast terminal, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0041] Reference Figure 7 The electronic device 700 may include one or more of the following components: a processing component 702 , a memory 704 , a power component 706 , a multimedia component 708 , an audio component 710 , an input / output (I / O) interface 712 , a sensor component 714 , a communication component 716 , and an image acquisition component 718 .

[0042] The processing component 702 generally controls the overall operation of the electronic device 700, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 702 may include one or more processors 720 to execute computer programs. In addition, the processing component 702 may include one or more modules to facilitate interaction between the processing component 702 and other components. For example, the processing component 702 may include a multimedia module to facilitate interaction between the multimedia component 708 and the processing component 702. In one example, the processing component may include a processor for executing the above-mentioned antenna control method.

[0043] The memory 704 is configured to store various types of data to support operations on the electronic device 700. Examples of such data include computer programs for any application or method operating on the electronic device 700, contact data, phone book data, messages, pictures, videos, etc. The memory 704 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0044] The power supply assembly 706 provides power to various components of the electronic device 700. The power supply assembly 706 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 700. The power supply assembly 706 may include a power supply chip, and the controller may communicate with the power supply chip to control the power supply chip to turn on or off the first switching device, so that the battery supplies power to the circuit board circuit or does not supply power.

[0045] The multimedia component 708 includes a screen that provides an output interface between the electronic device 700 and the target object. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input information from the target object. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.

[0046] The audio component 710 is configured to output and / or input audio file information. For example, the audio component 710 includes a microphone (MIC), and when the electronic device 700 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive external audio file information. The received audio file information can be further stored in the memory 704 or sent via the communication component 716. In some embodiments, the audio component 710 also includes a speaker for outputting audio file information.

[0047] The I / O interface 712 provides an interface between the processing component 702 and a peripheral interface module, such as a keyboard, a click wheel, a button, etc.

[0048] The sensor component 714 includes one or more sensors for providing various aspects of status assessment for the electronic device 700. For example, the sensor component 714 can detect the open / closed state of the electronic device 700, the relative positioning of components, such as the display screen and keypad of the electronic device 700, and the sensor component 714 can also detect the position change of the electronic device 700 or a component, the presence or absence of contact between the target object and the electronic device 700, the orientation or acceleration / deceleration of the electronic device 700, and the temperature change of the electronic device 700. In this example, the sensor component 714 can include a magnetic sensor, a gyroscope, and a magnetic field sensor, and can also include an inertial sensor, an image sensor, etc., wherein the magnetic field sensor includes at least one of the following: a Hall sensor, a thin film magnetoresistive sensor, and a magnetic liquid acceleration sensor.

[0049] The communication component 716 is configured to facilitate wired or wireless communication between the electronic device 700 and other devices. The electronic device 700 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G, 5G, or a combination thereof. In an exemplary embodiment, the communication component 716 receives broadcast information or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 716 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0050] In an exemplary embodiment, the electronic device 700 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0051] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0052] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An electronic device, characterized in that: The electronic device comprises: a T antenna, a main board, a middle frame and a sub-board; the middle frame is provided with an opening; the sub-board is inserted into the first side of the main board through the opening, the first side refers to the side close to the display screen of the electronic device; and the sub-board is used to electrically connect the first tuning circuit with the T antenna.

2. The electronic device according to claim 1, characterized in that: The middle frame includes a first partition bar and a second partition bar; a portion of the middle frame located between the first partition bar and the second partition bar constitutes a parasitic branch of the T antenna.

3. The electronic device according to claim 2, characterized in that: The electronic device further comprises a battery compartment, and the parasitic branch is arranged opposite to the battery compartment.

4. The electronic device according to claim 1, characterized in that: At least one switch device is disposed on the sub-board; the at least one switch device is used to electrically connect the first tuning circuit with the parasitic branch of the T antenna.

5. The electronic device according to claim 4, characterized in that: The first tuning circuit is arranged on the secondary board, and a grounding point of the secondary board is electrically connected to a grounding point of the main board.

6. The electronic device according to claim 4, characterized in that: The first tuning circuit is arranged on the mainboard, and the input and output pins of the first tuning circuit are electrically connected to the matching pins on the mainboard.

7. The electronic device according to claim 4, characterized in that: The electronic device further comprises a processor, which is connected to at least one switching device circuit on the sub-board and is used to control the on / off state of each switching device in the at least one switching device.

8. The electronic device according to claim 1, characterized in that: The electronic device further comprises a waterproof adhesive backing; the waterproof adhesive backing is arranged on the first side of the mainboard, and the waterproof adhesive backing is provided with a bend matching the size of the opening at the opening of the middle frame.

9. The electronic device according to claim 1, characterized in that: The first tuning circuit includes at least one capacitor, at least one inductor, or a combination of a capacitor and an inductor; the parasitic resonant frequency of the first tuning circuit is located in the B28, B5 and B8 frequency bands.

10. The electronic device according to claim 1, characterized in that: The T antenna includes a first branch, a second branch, a feed point, a location, and a second tuning circuit; the first branch is vertically arranged to the second branch; the first branch is electrically connected to the feed point and the location, respectively, and the second branch is electrically connected to the second tuning circuit.

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