Electronic device

Abstract

The utility model provides electronic equipment, belongs to the technical field of communication, and can solve the problems that the existing electronic equipment is easily influenced by a backboard and the radiation performance is poor. The electronic equipment comprises a backboard, a system chip located on the backboard and a communication module connected with the system chip. The orthographic projection of the communication module on the reference plane is not overlapped with the orthographic projection of the backboard on the reference plane; and the reference plane is a plane parallel to the back plate.

Description

Technical Field

[0001] The present disclosure belongs to the field of communication technology, and particularly relates to an electronic device. Background Art

[0002] Large-sized electronic devices such as all-in-one conference machines often require both wireless access point (AP) and station functions. For example, when used as a wireless access point, the electronic device can connect to a wireless network for Internet access and other functions; and when used as a station, the electronic device can be connected to other electronic devices as a station, such as other electronic devices that use Bluetooth connection to project screens, infrared control, etc. Utility Model Content

[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art and provide an electronic device.

[0004] An electronic device provided by an embodiment of the present disclosure includes: a backplane, a system chip located on the backplane, and a communication module connected to the system chip;

[0005] The orthographic projection of the communication module on the reference plane does not overlap with the orthographic projection of the backplane on the reference plane; the reference plane is a plane parallel to the backplane.

[0006] In some embodiments, the electronic device further comprises: a first connection port located at an edge of the back panel;

[0007] The communication module is connected to the system chip through the first connection port.

[0008] In some embodiments, the electronic device further comprises: an antenna system connected to the communication module;

[0009] The orthographic projection of the antenna system on the reference plane has no overlap with the orthographic projection of the backplane on the reference plane.

[0010] In some embodiments, the electronic device further comprises: a second connection port located at an edge of the communication module;

[0011] The antenna system is connected to the communication module via the second connection port.

[0012] In some embodiments, the antenna system includes: a printed circuit board, a plurality of antenna units located on the printed circuit board;

[0013] The plurality of antenna units are arranged in a row along the same direction on the printed circuit board.

[0014] In some embodiments, the plurality of antenna units have the same shape.

[0015] In some embodiments, the length of each antenna unit is greater than or equal to 2.7 cm, and the width is greater than or equal to 0.95 cm.

[0016] In some embodiments, the gap between adjacent antenna units is greater than or equal to 2.7 centimeters.

[0017] In some embodiments, the communication module includes: a first communication module and a second communication module;

[0018] The communication protocols of the first communication module and the second communication module are different.

[0019] In some embodiments, the first communication module includes: a wireless network communication module; the second communication module includes: a Bluetooth communication module.

[0020] In some embodiments, the wireless network communication module includes: a first transceiver circuit and a second transceiver circuit arranged in pairs; the Bluetooth communication module includes: a first transceiver circuit and a second transceiver circuit arranged in pairs and a first transceiver circuit arranged alone;

[0021] The first transceiver circuit and the second transceiver circuit transmit and receive wireless signals in different frequency bands.

[0022] In some embodiments, the electronic device is an all-in-one conference machine, a television, a tablet computer, or a vehicle-mounted Internet of Things terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure.

[0024] Figure 2 A schematic diagram of the structure of an antenna system in an electronic device provided in an embodiment of the present disclosure.

[0025] Figures 3a to 3e These are curve graphs of the return loss S11 of the five antenna units.

[0026] Figures 4a to 4d They are respectively curve graphs of the isolation S21 between adjacent antenna units. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantity restrictions, but indicate that there is at least one. Similar words such as "include" or "comprise" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] At present, two communication modules are directly used to connect to the system chip board in large-size electronic devices such as all-in-one conference machines, one of which can realize the wireless access point function and the other communication module can realize the site function.

[0030] However, since the back panel of the electronic device is mostly made of metal, directly connecting two communication modules to the system chip will affect the radiation characteristics of the antenna system due to the shielding effect of the back panel metal, causing the signal transmission to be greatly weakened. In addition, since there is no space on the back panel to place the two communication modules, the wiring is relatively messy.

[0031] In order to solve at least one of the above technical problems, an embodiment of the present disclosure provides an electronic device. The electronic device provided by the embodiment of the present disclosure will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure is shown in FIG. Figure 1 As shown, the electronic device includes: a backplane 101, a system chip 102 located on the backplane 101, and a communication module 103 connected to the system chip 101; the orthographic projection of the communication module 103 on the reference plane has no overlap with the orthographic projection of the backplane 101 on the reference plane; the reference plane is a plane parallel to the backplane 101.

[0033] The back plate 101 can be made of a metal material with a large elastic modulus, such as stainless steel. The back plate 101 can effectively support electronic components such as the system chip 102 thereon, thereby preventing the electronic components such as the system chip 102 from being damaged by force during use.

[0034] The system chip 102 includes multiple processing components, memory, modem and other basic components, which are manufactured on a single chip soldered to a circuit board and can perform a large number of operations. For example, the central processing unit can run most of the code in the operating system and application programs. The graphics processor can handle graphics-related tasks, such as user interfaces and games for visualization applications. The digital signal processor can handle more intensive data functions, such as compressing music files and analyzing sensor data from gyroscopes. The modem can convert wireless signals into data that can be understood by electronic devices, and can be divided into wireless network (WiFi) modems, Bluetooth modems, etc.

[0035] The communication module 103 can process wireless signals. For example, when the electronic device acts as a wireless access point, it can process wireless network signals and connect to a wireless network for Internet access and other functions. When the electronic device acts as a site, other electronic devices can be connected via Bluetooth for screen projection, infrared control, etc.

[0036] In the electronic device provided by the embodiment of the present disclosure, the orthographic projection of the communication module 103 on the reference plane does not overlap with the orthographic projection of the backplane 101 on the reference plane, that is, the communication module 103 is not arranged on the backplane 101 when connected to the system chip 102. In this way, the shielding effect of the backplane 101 can be prevented from affecting the performance of the communication module 103, thereby improving the wireless communication effect of the electronic device. In addition, the communication module 103 is not arranged on the backplane 101, which can leave more space for the backplane 101, facilitate wiring on the backplane 101, and reduce the complexity of wiring.

[0037] In some embodiments, Figure 1 As shown, the electronic device further includes: a first connection port 105 located at the edge of the back plate 101 ; and the communication module 103 is connected to the system chip 102 via the first connection port 105 .

[0038] The communication module 103 and the system chip 102 can be connected via the first connection port 105, and the first connection port 105 can be any one of a Universal Serial Bus (USB) interface, a High Definition Multimedia Interface (HDMI) interface, and a Video Graphics Array (VGA) interface. It is understandable that the first connection port 105 can also be other types of data interfaces, which are not listed here one by one.

[0039] During the application process, the communication module 103 can be plugged in and out, and does not need to be set on the back plate 101, which can prevent the shielding effect of the back plate 101 from affecting the performance of the communication module 103, thereby improving the wireless communication effect of the electronic device. At the same time, the communication module 103 does not need to occupy the space on the back plate 101, thus saving space on the back plate 101 in the electronic device, facilitating wiring on the back plate 101, and reducing the complexity of wiring.

[0040] In some embodiments, Figure 1 As shown, the electronic device further includes: an antenna system 105 connected to the communication module 103; the orthographic projection of the antenna system 105 on the reference plane does not overlap with the orthographic projection of the back panel 101 on the reference plane.

[0041] The orthographic projection of the antenna system 105 on the reference plane does not overlap with the orthographic projection of the backplane 101 on the reference plane, that is, the antenna system 105 is not arranged on the backplane 101 when connected to the communication module 103. In this way, the shielding effect of the backplane 101 can be prevented from affecting the radiation performance of the antenna system 105, thereby improving the wireless communication effect of the electronic device. In addition, the antenna system 105 is not arranged on the backplane 101, which can leave more space for the backplane 101, facilitate wiring on the backplane 101, and reduce the complexity of wiring.

[0042] In some embodiments, Figure 1 As shown, the electronic device further includes: a second connection port 106 located at the edge of the communication module 103 ; the antenna system 105 is connected to the communication module 103 via the second connection port 106 .

[0043] The antenna system 105 is connected to the communication module 103 via the second connection port 106, which can be specifically an IPEX interface. During the application process, the antenna system 105 can be plugged in and out, and does not need to be set on the back plate 101, which can prevent the shielding effect of the back plate 101 from affecting the radiation performance of the antenna system 105, thereby improving the wireless communication effect of the electronic device. At the same time, the antenna system 105 does not need to occupy the space on the back plate 101, which saves space on the back plate 101 in the electronic device, facilitates wiring on the back plate 101, and reduces the complexity of wiring.

[0044] Figure 2 A schematic diagram of the structure of an antenna system in an electronic device provided in an embodiment of the present disclosure, such as Figure 2 As shown, the antenna system 105 includes: a printed circuit board 1051 and a plurality of antenna units 1052 located on the printed circuit board 1051; the plurality of antenna units 1052 are arranged in a row along the same direction on the printed circuit board 1051.

[0045] The printed circuit board 1051 uses phenolic paper, epoxy paper or epoxy glass cloth as a substrate, which has a good insulation effect. Various wires are also printed on it. While supporting the antenna unit 1052, it also provides routing for each antenna unit 1052 to transmit signals.

[0046] The antenna unit 1052 can be directly printed on the printed circuit board 1051 using conductive materials such as copper, etc., to radiate and receive wireless signals. The antenna unit 1052 can be formed in the form of a microstrip line, and the microstrip line can be bent according to certain rules, which can improve the radiation and reception effects of the antenna unit 1052.

[0047] The antenna units 1052 are arranged in a row along the same direction on the printed circuit board 1051, which can save the space occupied by each antenna unit.

[0048] In practical applications, the electronic device further includes a housing (not shown in the figure), and the above-mentioned backplane 101, system chip 102, communication module 103, antenna system 105 and other structures are arranged inside the housing, wherein a certain space is reserved at the bottom of the housing as a bottom box, and the communication module 103 and antenna system 105 are located in the bottom box. The side wall of the bottom box is generally made of insulating materials such as plastic, which can reduce the weight of the housing and save the preparation cost on the one hand, and prevent the bottom box from shielding the communication module 103 and antenna system 105 therein, thereby affecting the communication performance of the electronic device.

[0049] In some embodiments, Figure 2 As shown, the multiple antenna units 1052 have the same shape.

[0050] Multiple antenna units 1052 can adopt the same shape, and in the preparation process, can adopt the same material, the same process, and one-time molding, which can reduce the process steps and save the preparation cost. It is also convenient to arrange the antenna units 1052, avoid mutual interference between the antenna units 1052, and affect the radiation and reception performance of the wireless signal. In practical applications, taking two communication modules as an example, the number of antenna units 1052 required is 5.

[0051] In some embodiments, Figure 2 As shown, the length of each antenna unit 1052 is greater than or equal to 2.7 cm, the width is greater than or equal to 0.95 cm, and the gap between adjacent antenna units 1052 is greater than or equal to 2.7 cm.

[0052] The main indicators for measuring the performance of the antenna system 105 are frequency range, reflection coefficient, isolation, efficiency and gain. Taking the overall length l of the antenna system 105 as 24.5 cm, the width w as 1.5 cm, the length l1 of each antenna unit 1052 as 2.7 cm, the width w1 as 0.95 cm, and the gap d between adjacent antenna units 1052 as 2.7 cm as an example, various performances of the antenna system 105 are tested.

[0053] Frequency range refers to the frequency range that the antenna can work in. Different wireless communication systems require different frequency ranges, so the frequency range of the antenna should be able to cover the required frequency range.

[0054] The reflection coefficient refers to the situation when the feeder and antenna are matched, the high-frequency energy is completely absorbed and radiated by the antenna, and there is only an incident wave on the feeder, but no reflected wave. The feeder transmits a traveling wave, the voltage amplitude is equal at all points on the feeder, and the impedance at any point on the feeder is equal to its characteristic impedance. When the antenna and feeder do not match, that is, when the antenna impedance is not equal to the characteristic impedance of the feeder, the antenna cannot absorb all the high-frequency energy transmitted on the feeder, and reflects part of the energy to form a reflected wave. When the antenna and feeder do not match, a reflected wave is generated at the antenna end, and the two are superimposed to form a standing wave. The ratio of the reflected wave to the incident wave amplitude is called the reflection coefficient.

[0055] Isolation refers to the ratio of the input power at one port of a dual-polarized antenna to the coupled power at the other port.

[0056] Efficiency refers to the ratio of the power radiated by the antenna (i.e. the power of the electromagnetic wave part that is effectively converted) to the active power input to the antenna.

[0057] Gain refers to the amount of power added to an antenna in a specific direction relative to an ideal coaxial cable antenna. The higher the gain, the better the antenna's reception and transmission. Gain is related to the directivity of the antenna; the higher the directivity, the higher the gain.

[0058] Figures 3a to 3e They are curve diagrams of the return loss S11 of the five antenna units, such as Figures 3a to 3e As shown, the six marked points in each figure are the operating frequency bands of the antenna unit 1052, which are 2.4 GHz-2.48 GHz and 5.15 GHz-5.85 GHz. Within the operating bandwidth of the antenna unit 1052, the value of S11 is less than -10 dB, and the resonance characteristics of each antenna unit 1052 are good.

[0059] Figures 4a to 4d They are curve diagrams of the isolation S21 between adjacent antenna units, such as Figures 4a to 4dAs shown, each marked point in the figure is the isolation of the antenna unit 1052 within the working bandwidth, the value of S21 is less than -15dB, the isolation between adjacent antenna units 1052 is good, and the antenna units 1052 do not affect each other.

[0060] In some embodiments, Figure 1 As shown, the communication module 103 includes: a first communication module 1031 and a second communication module 1032; the communication protocols of the first communication module 1031 and the second communication module 1032 are different. The first communication module 1031 includes: a wireless network communication module; the second communication module 1032 includes: a Bluetooth communication module.

[0061] The first communication module 1031 can specifically be a wireless network communication module, and the second communication module 1032 can specifically be a Bluetooth communication module. The two have different communication protocols and transmit different wireless signals respectively. Among them, the wireless network communication module can transmit wireless network signals, and the Bluetooth communication module can transmit Bluetooth signals. In this way, the wireless network communication module can realize the wireless access point function, and the Bluetooth communication module can realize the site function, thereby realizing the integration of two different communication modules 103, thereby reducing the volume occupied by the communication module 103.

[0062] In some embodiments, Figure 1 As shown, the wireless network communication module includes: a first transceiver circuit 103A and a second transceiver circuit 103B arranged in pairs; the Bluetooth communication module includes: a first transceiver circuit 103A and a second transceiver circuit 103B arranged in pairs and a first transceiver circuit 103A arranged alone; the frequency bands of the wireless signals received and transmitted by the first transceiver circuit 103A and the second transceiver circuit 103B are different.

[0063] The first transceiver circuit 103A and the second transceiver circuit 103B can transmit wireless signals of 2.4GHz-2.48GHz and 5.15GHz-5.85GHz respectively, realizing dual-frequency transmission function. Among them, the frequency band of Bluetooth signal is only 2.4GHz-2.48GHz frequency band, and the first transceiver circuit 103A can be used alone to transmit Bluetooth signal.

[0064] It is understandable that if Figure 1 As shown, the electronic device also includes structures such as a processing chip, a duplexer, a crystal oscillator, and a power supply. The implementation principle thereof can refer to related technologies and will not be described in detail here.

[0065] In some embodiments, the electronic device may specifically be a conference all-in-one machine, a television, a tablet computer, a vehicle-mounted IoT terminal, and the like, which may implement wireless access point and site functions in different application scenarios, and its working principle in different application scenarios is similar to the above description, which will not be described in detail here. It is understandable that the electronic device provided in the embodiments of the present disclosure may be other devices with wireless communication functions in addition to the above devices, which will not be listed one by one here.

[0066] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. An electronic device, characterized in that: The electronic device comprises: a backplane, a system chip located on the backplane, and a communication module connected to the system chip; The orthographic projection of the communication module on the reference plane does not overlap with the orthographic projection of the backplane on the reference plane; the reference plane is a plane parallel to the backplane.

2. The electronic device according to claim 1, characterized in that: The electronic device further comprises: a first connection port located at an edge of the back panel; The communication module is connected to the system chip through the first connection port.

3. The electronic device according to claim 2, characterized in that: The electronic device further comprises: an antenna system connected to the communication module; The orthographic projection of the antenna system on the reference plane has no overlap with the orthographic projection of the backplane on the reference plane.

4. The electronic device according to claim 3, characterized in that: The electronic device further comprises: a second connection port located at an edge of the communication module; The antenna system is connected to the communication module via the second connection port.

5. The electronic device according to claim 4, characterized in that: The antenna system comprises: a printed circuit board, and a plurality of antenna units located on the printed circuit board; The plurality of antenna units are arranged in a row along the same direction on the printed circuit board.

6. The electronic device according to claim 5, characterized in that: The plurality of antenna units have the same shape.

7. The electronic device according to claim 6, characterized in that: The length of each antenna unit is greater than or equal to 2.7 cm, and the width is greater than or equal to 0.95 cm.

8. The electronic device according to claim 7, characterized in that: The gap between adjacent antenna units is greater than or equal to 2.7 centimeters.

9. The electronic device according to claim 3, characterized in that: The communication module includes: a first communication module and a second communication module; The communication protocols of the first communication module and the second communication module are different.

10. The electronic device according to claim 9, characterized in that: The first communication module includes: a wireless network communication module; the second communication module includes: a Bluetooth communication module.

11. The electronic device according to claim 10, characterized in that: The wireless network communication module includes: a first transceiver circuit and a second transceiver circuit arranged in pairs; the Bluetooth communication module includes: a first transceiver circuit and a second transceiver circuit arranged in pairs and a first transceiver circuit arranged alone; The first transceiver circuit and the second transceiver circuit transmit and receive wireless signals in different frequency bands.

12. The electronic device according to claim 1, characterized in that: The electronic devices are all-in-one conference machines, televisions, tablet computers, and vehicle-mounted Internet of Things terminals.

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