Antenna system and electronic equipment

Abstract

The invention provides an antenna system and electronic equipment, and relates to the technical field of antennas. The antenna system is applied to the electronic equipment, the electronic equipment is provided with a main circuit board, the main circuit board is provided with a wireless communication module and an LED control chip, the antenna system comprises an antenna radiator and a coaxial cable, and the antenna radiator is arranged on an auxiliary circuit board with an LED lamp effect module; the antenna radiator is connected with a radio frequency port of the wireless communication module through a central conductor of the coaxial cable, the LED lamp effect module is connected with the main circuit board through the central conductor, and the main circuit board is used for supplying power to the LED lamp effect module through the central conductor; the LED lamp effect module is connected with the LED control chip through the shielding layer of the coaxial cable, and the LED control chip is used for controlling the LED lamp effect module to display the corresponding lamp effect by outputting an LED control signal. According to the invention, the device space is efficiently saved, the assembly difficulty is reduced, it can be ensured that the antenna has a good radio frequency function, and diversified function requirements of the LED lamp can be met.

Description

Technical Field

[0001] This disclosure relates to the field of antenna technology, and more particularly to an antenna system and electronic device. Background Technology

[0002] Desktop computers and edge computing devices often use metal antennas, which are typically assembled at the front or rear of the host unit. Due to their large size, metal antennas occupy significant internal space, resulting in a compact internal layout and increasing design and assembly complexity. Furthermore, the assembly process for these antennas is relatively complex, requiring more manpower and time. During transportation and assembly, metal antennas, due to their structural characteristics, are vulnerable to impacts and are easily damaged by collisions, compression, or other factors. Damage to these antennas significantly affects the signal reception and transmission performance of the device, thereby reducing the overall stability and reliability of the equipment.

[0003] In addition, these devices are often equipped with LED (Light Emitting Diode) lighting effects, which require a separate PCB (Printed Circuit Board), further exacerbating the space occupation problem and increasing assembly costs. Summary of the Invention

[0004] This disclosure provides an antenna system and electronic device that can solve the technical problem of high equipment space occupation and assembly cost caused by the need for independently designed iron antennas and LED lights in electronic devices such as desktop computers and edge computing devices.

[0005] According to a first aspect of this disclosure, an antenna system is provided for use in an electronic device. The electronic device has a main circuit board, which includes a wireless communication module and an LED control chip. The antenna system includes an antenna radiator and a coaxial cable. The antenna radiator is disposed on a sub-circuit board having an LED lighting module. The antenna radiator is connected to the radio frequency port of the wireless communication module via the center conductor of the coaxial cable. The LED lighting module is connected to the main circuit board via the center conductor, and the main circuit board supplies power to the LED lighting module via the center conductor. The LED lighting module is connected to the LED control chip via the shielding layer of the coaxial cable, and the LED control chip controls the LED lighting module to display corresponding lighting effects by outputting LED control signals.

[0006] According to an embodiment of this disclosure, the sub-circuit board is provided with a matching network, through which the center conductor is connected to the antenna radiator. The matching network is used to match the impedance of the antenna radiator with the target impedance of the coaxial cable.

[0007] According to an embodiment of this disclosure, the main circuit board is provided with a first capacitor element, and the radio frequency port of the wireless communication module is connected to the center conductor through the first capacitor element; the sub-circuit board is provided with a second capacitor element, and the center conductor is connected to the matching network through the second capacitor element.

[0008] According to an embodiment of this disclosure, the main circuit board is provided with a first inductor and a voltage source for supplying power to the LED lighting module, and the voltage source is connected to the center conductor through the first inductor; the secondary circuit board is provided with a first filter circuit, and the center conductor is connected to the LED lighting module through the first filter circuit.

[0009] According to embodiments of this disclosure, the LED lighting effect module includes an LED driver chip and LED beads electrically connected to the LED driver chip; the main circuit board is connected to the power supply pin of the LED driver chip through a central conductor; the LED control chip transmits LED control signals to the signal pin of the LED driver chip through a shielding layer; the LED driver chip is used to drive the LED beads to display corresponding lighting effects by parsing the LED control signals.

[0010] According to embodiments of this disclosure, the antenna system further includes: a first radio frequency connector disposed on a main circuit board; a second radio frequency connector disposed on a sub-circuit board; a coaxial cable having a first end and a second end disposed opposite to each other, wherein the shielding layer of the first end of the coaxial cable is connected to the LED control chip through the external conductor of the first radio frequency connector, and the shielding layer of the second end of the coaxial cable is connected to the signal pin of the LED driver chip through the external conductor of the second radio frequency connector; the main circuit board is provided with a third capacitor element, and the external conductor of the first radio frequency connector is grounded through the third capacitor element; the sub-circuit board is provided with a fourth capacitor element, and the external conductor of the second radio frequency connector is grounded through the fourth capacitor element.

[0011] According to an embodiment of this disclosure, the main circuit board is provided with a second filter circuit, and the LED control chip is connected to the external conductor of the first radio frequency connector through the second filter circuit;

[0012] The secondary circuit board is equipped with a third filter circuit, and the external conductor of the second RF connector is connected to the signal pin of the LED driver chip through the third filter circuit.

[0013] According to embodiments of this disclosure, the antenna radiator includes a main antenna radiator and an auxiliary antenna radiator disposed on both sides of the LED lighting module; the sub-circuit board is provided with an isolation branch adjacent to the auxiliary antenna radiator, the length direction of the isolation branch being perpendicular to the length direction of the auxiliary antenna radiator; for any target antenna radiator among the main antenna radiator and the auxiliary antenna radiator, a grounding part is provided on the sub-circuit board within a preset distance range from the edge of the target antenna radiator, and the grounding part is connected to the metal casing of the electronic device; wherein, the preset distance range is determined according to the operating frequency band of the target antenna radiator.

[0014] According to an embodiment of this disclosure, the sub-circuit board is disposed in an unobstructed area outside the metal casing of the electronic device, and the distance between the sub-circuit board and the metal casing is 6mm to 10mm.

[0015] A second aspect of this disclosure provides an electronic device, comprising: a metal casing; a main circuit board disposed inside the metal casing, the main circuit board having a wireless communication module and an LED control chip; a secondary circuit board disposed outside the metal casing, the secondary circuit board having an LED lighting effect module; and the aforementioned antenna system, the antenna system being electrically connected to the main circuit board and the secondary circuit board respectively.

[0016] According to the antenna system and electronic device provided in this disclosure, the antenna radiator is set in the remaining space area of ​​the LED lighting module on the sub-circuit board, eliminating the need for additional PCB board material. The three independent cables connecting the LED lighting module are eliminated; a coaxial cable is used to simultaneously handle radio frequency signal transmission, LED power supply, and LED control signal transmission, reducing the number of cables and space occupation. Specifically, the center conductor of the coaxial cable is used to transmit radio frequency signals and LED power supply, while the shielding layer is used to transmit LED control signals. Therefore, the antenna system, through reasonable antenna design and space reuse, efficiently saves equipment space and reduces assembly difficulty. It ensures that the antenna has good radio frequency functionality while meeting the diverse functional requirements of the LED lights, making it suitable for various scenarios such as desktop computers, edge computing devices, and smart homes.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0018] The above and other objects, features and advantages of this disclosure will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0019] Figure 1 This schematic diagram illustrates the structure of an electronic device related to the technology.

[0020] Figure 2A A schematic diagram of an antenna system according to a first embodiment of the present disclosure is shown.

[0021] Figure 2B A schematic diagram of a coaxial cable according to a first embodiment of the present disclosure is shown.

[0022] Figure 3A A circuit diagram of an antenna system according to a second embodiment of the present disclosure is shown schematically;

[0023] Figure 3B A schematic diagram of an antenna system according to a second embodiment of the present disclosure is shown.

[0024] Figure 4 The schematic diagram illustrates the structure of the main antenna radiator and the auxiliary antenna radiator in an antenna system according to a third embodiment of the present disclosure;

[0025] Figures 5A-5C The schematic illustration shows the S-parameters of a dual-antenna system according to a third embodiment of the present disclosure at an antenna height of 13.58 mm, wherein... Figure 5A The voltage curve of the main antenna radiator. Figure 5B The voltage curve of the auxiliary antenna radiator. Figure 5C The forward transmission coefficient curve for a dual-antenna setup;

[0026] Figures 6A-6C The schematic illustration shows the S-parameters of a dual-antenna system according to a third embodiment of the present disclosure at an antenna height of 9.58 mm, wherein... Figure 6A The voltage curve of the main antenna radiator. Figure 6B The voltage curve of the auxiliary antenna radiator. Figure 6C The forward transmission coefficient curve for a dual-antenna setup;

[0027] Figure 7 A schematic diagram illustrating the structure of an isolation stub in an antenna system according to a third embodiment of the present disclosure is shown.

[0028] Figure 8 A schematic diagram of an electronic device according to an embodiment of the present disclosure is shown. Detailed Implementation

[0029] The embodiments of the present disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the disclosure. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the present disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.

[0030] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0031] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0032] When using expressions such as "at least one of A, B and C", they should generally be interpreted in accordance with the meaning that is commonly understood by those skilled in the art (e.g., "a system having at least one of A, B and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B and C, etc.).

[0033] This disclosure provides an antenna system and electronic device. Before introducing the technical solutions provided by this disclosure, let's first look at... Figure 1 The relevant technologies involved in this disclosure are explained.

[0034] Figure 1 A schematic diagram of the structure of an electronic device related to the technology is shown.

[0035] like Figure 1 As shown, in related technologies, electronic device 100 includes motherboard 101, iron antenna 102, and LED lighting module 103.

[0036] Electronic device 100 can be a desktop computer or an edge computing device. Antenna 102 is a common hardware component in electronic device 100. It is relatively large and mostly located on the outside of the device, responsible for processing wireless signals such as WiFi and Bluetooth. Antenna 102 uses a metal structure (such as iron) and is connected to motherboard 101 via coaxial cable A to ensure radiation efficiency.

[0037] The LED lighting module 103 requires a separate PCB board (which can be referred to as the LED PCB) from the motherboard 101. Furthermore, the LED lighting module 103 is connected to the motherboard via cable B, which includes three wires: a power supply wire, a signal wire, and a ground wire (GND). These three cables are connected to corresponding pins on the motherboard, separating the power supply and control signals to prevent voltage fluctuations during dimming from affecting the motherboard's stability.

[0038] However, the solutions employed by these technologies require separate configuration of LED lighting modules and connecting cables, and the antennas also need to be independently developed and debugged. This not only wastes space but also significantly increases assembly costs. Metal antennas rely on mold forming, incurring high mold-making costs, long material preparation cycles, and a high product defect rate. Furthermore, the assembly of separate antennas and LED lighting modules consumes considerable manpower, exacerbating the space occupation problem and increasing equipment assembly costs.

[0039] In view of this, the embodiments of this disclosure provide an antenna system and electronic device that breaks through the limitations of traditional design by adopting a shared LED PCB design concept, fully utilizing the unused space on the LED PCB for antenna design. By maximally optimizing and compressing the antenna space, and eliminating the three cables connecting the LED lighting module, the coaxial cable connecting the antenna is used as the power supply line and signal input channel for the LED lighting module. Thus, it ensures both good antenna communication capabilities and the diverse functional requirements of the LED lights.

[0040] The antenna system of the present disclosure will be described in detail below.

[0041] Figure 2A A schematic diagram of an antenna system according to a first embodiment of the present disclosure is shown. Figure 2B A schematic diagram of a coaxial cable according to a first embodiment of the present disclosure is shown.

[0042] like Figure 2A and Figure 2B As shown, the first embodiment of this disclosure provides an antenna system 200 applied to an electronic device. The electronic device is provided with a main circuit board 210, which is provided with an LED control chip 211 and a wireless communication module 212. The antenna system 200 includes an antenna radiator 232 and a coaxial cable 220. The antenna radiator 232 is disposed on a sub-circuit board 230 having an LED lighting module 231.

[0043] The antenna radiator 232 is connected to the radio frequency port of the wireless communication module 212 through the center conductor of the coaxial cable 220, and the LED lighting module 231 is connected to the main circuit board 210 through the center conductor of the coaxial cable 220. The circuit board 210 supplies power to the LED lighting module 231 through the center conductor.

[0044] The LED lighting module 231 is connected to the LED control chip 211 through the shielding layer of the coaxial cable 220. The LED control chip 211 is used to control the LED lighting module 231 to display the corresponding lighting effect by outputting LED control signals.

[0045] In this embodiment, the electronic device is a device that integrates wireless communication and visual feedback functions. For example, the electronic device includes a desktop computer, an edge computing device, an industrial IoT gateway, an industrial control host, a smartphone, a wireless router, a smartwatch, a smart speaker, a game controller, etc.

[0046] Antenna radiator 232 is the radiating element of antenna system 200, supporting wireless communication such as Wi-Fi and Bluetooth. Coaxial cable 220 serves as a signal transmission line, connecting the RF port of the wireless communication module to the antenna radiator to ensure stable RF signal transmission.

[0047] The coaxial cable 220 includes, from the inside out, a center conductor (also called the core wire) 221, an insulation layer 222, a shielding layer 223, and a protective layer 224, with the shielding layer 223 grounded. The center conductor 221, located at the cable core, serves as the signal transmission path, carrying high-frequency current and ensuring low-resistance transmission to reduce losses. The insulation layer 222 isolates the center conductor and the shielding layer, maintaining a fixed distance to control impedance, prevent short circuits, and maintain signal integrity. The shielding layer (also called the outer conductor) 223 covers the outside of the insulation layer, providing electromagnetic shielding, blocking external interference, and serving as the signal return path to ensure signal stability and anti-interference. The protective layer (also called the sheath) 224 protects the internal structure from physical damage, enhancing cable durability and making it suitable for the confined space inside desktop PCs. The coaxial cable enables efficient signal transmission in desktop PC antennas, minimizing signal loss through impedance matching while shielding against interference to ensure stable wireless connections. Extending the coaxial cable allows for physical separation of the antenna from the device, providing installation flexibility.

[0048] LED lighting module 231 refers to a dynamic lighting system on the casing or brand logo area of ​​an electronic device. It can be used for status indication (such as temperature-sensitive color change), aesthetic decoration (such as flowing light or breathing light), or brand enhancement. For example, when LED lighting module 231 flashes red, it indicates that the CPU is overheating; when LED lighting module 231 flashes blue, it indicates that the device is in sleep mode.

[0049] The main circuit board 210 is the core circuit board of the electronic device, integrating core components such as the CPU, memory, and storage, as well as connectors (such as PCIe slots and USB ports). For example, the main circuit board 210 is made of multi-layer PCB. Depending on the application scenario, the main circuit board 210 includes consumer-grade motherboards, mobile motherboards, and industrial-grade motherboards (such as embedded motherboards or single-board computers).

[0050] LED control chip 211 is a hardware LED controller integrated on the main circuit board 210, used to receive or generate LED control signals. For example, when receiving externally transmitted LED control signals, the motherboard manufacturer provides dedicated RGB control software, which runs in software form on the operating system of the electronic device to control the hardware LED controller integrated on the motherboard.

[0051] The wireless communication module 212 is a radio frequency communication hardware component integrated on the main circuit board 210, which enables wireless network access for electronic devices through an antenna. The wireless communication module 212 mainly includes a radio frequency chip, a baseband processor, an onboard antenna interface, a power management unit, and a Bluetooth collaboration module.

[0052] For example, the wireless communication module 212 includes integrated modules directly soldered onto the motherboard, pluggable Mini PCIe modules, M.2 modules, onboard chipsets, and other types.

[0053] The secondary circuit board 230 is specifically designed for LED lighting, housing the LED lighting effect module 231 and primarily used for lighting effect control. The secondary circuit board 230 is independent of the main circuit board 210. This is mainly because the LED lighting effect module 231 generates high-frequency noise and electromagnetic radiation when adjusting the lighting effect. If shared with the main circuit board 210, it might interfere with sensitive components on the main circuit board 210 (such as the CPU, wireless module, or antenna), leading to signal distortion or performance degradation, and affecting device stability. An independent PCB provides physical isolation, reduces electromagnetic interference, and ensures the stability of the main circuit board 210.

[0054] For example, the LED lighting module 231 and the antenna radiator 232 can be separately mounted on the sub-circuit board 230. Since the LED lighting module 231 has a specific mounting position on the sub-circuit board 230 (such as the PCB edge or indicator light slot), the antenna radiator 232 is placed in the remaining space area of ​​the LED lighting module 231 on the sub-circuit board 230, eliminating the need for additional PCB materials and reducing the number of cables and space occupation.

[0055] For example, the secondary circuit board 230 may be made of materials including fiberglass epoxy resin (FR-4), aluminum substrate (MCPCB), and ceramic substrate. The secondary circuit board 230 can be a rigid PCB, a flexible PCB, or a hybrid PCB combining rigid and flexible components. The secondary circuit board 230 may be located on the casing of the electronic device or in the branding area.

[0056] For example, the antenna radiator 232 can be a copper foil trace with a specific geometry formed on the sub-circuit board 230 through an etching process, using the copper foil trace to realize the radio frequency signal transmission and reception function. Compared with traditional iron antennas that require additional assembly, the antenna radiator 232 can be integrally formed with the sub-circuit board 230, which has the advantages of high integration and low cost.

[0057] This embodiment does not limit the type of antenna radiator 232. For example, the antenna radiator 232 includes dipole antennas, monopole antennas, inverted-F antennas (IFA), planar inverted-F antennas (PIFA), patch antennas, serpentine antennas, loop antennas, UWB (Ultra-Wide Band) antennas, slot antennas, coplanar waveguide feed antennas, etc.

[0058] The antenna system in this embodiment utilizes the remaining space of the LED lighting module on the secondary circuit board to house the antenna radiator, eliminating the need for additional PCB materials. It eliminates the need for three separate cables connecting the LED lighting module, instead using a coaxial cable to simultaneously handle RF signal transmission, LED power supply, and LED control signal transmission, thus reducing the number of cables and space requirements. Specifically, the center conductor of the coaxial cable transmits RF signals and LED power, while the shielding layer transmits LED control signals. Therefore, through a rationally designed antenna configuration and space reuse, the antenna system efficiently saves equipment space, reduces assembly difficulty, and ensures both excellent RF functionality and the ability to meet the diverse functional requirements of LED lights. This makes it suitable for various scenarios such as desktop computers, edge computing devices, and smart homes.

[0059] In this embodiment, the shielding layer of the coaxial cable can be directly grounded to achieve grounding access for the LED lighting module.

[0060] The second embodiment of this disclosure provides an antenna system. For the sake of brevity, features that are the same as or similar to those in the first embodiment will not be repeated. Only the features that are different from those in the first embodiment will be described below.

[0061] Figure 3A A circuit diagram of an antenna system according to a second embodiment of the present disclosure is shown schematically. Figure 3B A schematic diagram of an antenna system according to a second embodiment of the present disclosure is shown.

[0062] like Figures 3A-3B As shown, the second embodiment of this disclosure provides an antenna system. For ease of explanation, in this embodiment, the main circuit board and the secondary circuit board are respectively referred to as PCB1 and PCB2, the coaxial cable is referred to as RF cable, the LED control chip and the wireless communication module are respectively referred to as LED output and WIFI module, the LED control signal can be referred to as LEDDIN, and the LED lighting module and the antenna radiator are respectively referred to as LED lighting and ANT.

[0063] In this embodiment, the sub-circuit board PCB2 is provided with a matching network MAT. The center conductor is connected to the antenna radiator ANT through the matching network MAT. The matching network MAT is used to match the impedance of the antenna radiator ANT with the target impedance of the coaxial cable RF cable.

[0064] Matching networks (MATs) are used for dynamic impedance tuning of antennas. For example, MATs include at least one of L-type, T-type, and Π-type matching networks. Both T-type and Π-type matching networks consist of capacitors and inductors. A T-type matching network consists of two inductors connected in series and one capacitor connected in parallel, while a Π-type matching network consists of two capacitors connected in parallel and one inductor connected in series.

[0065] For example, the target impedance of a coaxial RF cable is 50Ω. The relevant parameters of the matching network (such as capacitance and inductance values) can be adjusted according to different operating frequency bands and the layout of the secondary circuit board to offset the reactive component in the antenna impedance, ensuring the resistance part matches 50Ω, thus adapting to different antenna size limitations.

[0066] In this embodiment, the matching network is positioned at the excitation end of the antenna radiator to achieve dynamic impedance tuning, maximizing power transmission and reducing reflection losses. This configuration offers dual advantages: firstly, when antenna size is limited, matching tuning can reduce the length of the antenna radiator, thus saving space; secondly, in different projects, if frequency deviation or efficiency reduction occurs, matching tuning can enable antenna sharing, thereby achieving antenna standardization. Compared to traditional iron antennas limited to the operating frequency band, this embodiment's antenna system is adaptable to different frequency bands and PCB environments.

[0067] In this embodiment, the main circuit board PCB1 is provided with a first capacitor element R1, and the radio frequency port of the wireless communication module WIFI is connected to the center conductor through the first capacitor element R1. The secondary circuit board PCB2 is provided with a second capacitor element R2, and the center conductor is connected to the matching network MAT through the second capacitor element R2.

[0068] Since the coaxial cable has a first end and a second end that are set opposite to each other, the radio frequency port of the wireless communication module (WIFI module) is connected to the center conductor of the first end of the coaxial cable (RF cable) through the first capacitor element R1, and the center conductor of the second end of the coaxial cable (RF cable) is connected to the antenna radiator (ANT) through the second capacitor element R2 and the matching network MAT in sequence.

[0069] In the antenna system of this embodiment, since the capacitor element can transmit AC signals and block DC, the DC blocking capacitor on the main circuit board side can prevent the 5V DC power supply to the LED from affecting the RF performance, and the DC blocking capacitor on the secondary circuit board side can prevent the RF signal from interfering with the LED power supply, thereby realizing the function of transmitting RF signals and 5V DC simultaneously with a single core wire.

[0070] In some embodiments, the RF port of the wireless communication module is also connected to the first capacitor element R1 via another matching network, which is used to match the output impedance of the wireless communication module with the target impedance of the coaxial cable. Thus, the RF port of the WIFI module is connected to the center conductor of the first end of the coaxial cable via the other matching network and the first capacitor element R1.

[0071] In this embodiment, the main circuit board PCB1 is provided with a first inductor L1 and a voltage source for supplying power to the LED lighting module. The voltage source is connected to the center conductor through the first inductor L1. The secondary circuit board PCB2 is provided with a first filter circuit LC1, and the center conductor is connected to the LED lighting module through the first filter circuit LC1.

[0072] For example, based on the characteristics of the main circuit board and the LED lighting module, the voltage provided by the voltage source can be 5V. The voltage source is connected to the center conductor of the first end of the coaxial cable (RF cable) through the first inductor element L1, and the center conductor of the second end of the coaxial cable (RF cable) is connected to the LED lighting module (LED lighting) through the first filter circuit LC1. Thus, the center conductor of the coaxial cable enables the main circuit board to supply power to the LED.

[0073] For example, the first filter circuit LC1 includes an inductor and a capacitor. The inductor is located between the center conductor of the second end of the coaxial cable and the LED lighting module. One end of the capacitor is grounded, and the other end is located between the inductor and the LED lighting module.

[0074] In the antenna system of this embodiment, the first inductor element blocks the switching noise in the voltage source and prevents it from coupling to the antenna radiator along the transmission line; the voltage source supplies power to the LED after passing through the first filter circuit. The inductor blocks high frequencies and the capacitor filters ripple, which can purify the high-frequency ripple in the 5V power supply (such as PWM dimming noise), block the radio frequency signal from entering the power supply, ensure the power supply is clean, the LED light effect is flicker-free, and the WiFi signal is free from interference.

[0075] In this embodiment, the LED lighting module includes an LED driver chip and LED beads electrically connected to the LED driver chip. The main circuit board is connected to the power supply pin of the LED driver chip via a central conductor. The LED control chip transmits LED control signals to the signal pins of the LED driver chip through a shielding layer. The LED driver chip is used to drive the LED beads to display corresponding lighting effects by parsing the LED control signals.

[0076] An LED driver chip is mounted on the secondary circuit board PCB2. This LED driver chip includes a power supply pin, a signal pin, and a ground pin. The power supply pin receives the power supply voltage (e.g., 5V) from the voltage source on the main circuit board PCB1. The signal pin receives the LED control signal (LED DIN) from the LED output pin of the LED control chip on the main circuit board PCB1. The LED driver chip interprets the LED control signal and drives the LED beads. The LED beads, as the actual light-emitting components, are driven by the LED driver chip to display corresponding lighting effects (such as color, brightness, and other dynamic effects). The ground pin of the LED driver chip is grounded, forming a current loop to ensure circuit stability.

[0077] Continuing with the explanation of the LED lighting control process: The center conductor of the coaxial cable enables the main circuit board to supply power to the LEDs. The main circuit board is equipped with an LED control chip to generate LED control signals, which can be, for example, RGB data frames (i.e., RGB color values). The RGB data frames are transmitted through the shielding layer of the coaxial cable to the signal pins of the LED driver chip on the secondary circuit board. When powered on, the LED driver chip parses the RGB data frames and drives the LED beads to display the corresponding lighting effects.

[0078] In this embodiment, the antenna system further includes: a first RF connector disposed on the main circuit board PCB1; a second RF connector disposed on the sub-circuit board PCB2; and a coaxial cable RF cable having a first end and a second end disposed opposite to each other. The shielding layer of the first end of the coaxial cable RF cable is connected to the LED output of the LED control chip via the external conductor of the first RF connector, and the shielding layer of the second end of the coaxial cable RF cable is connected to the signal pin of the LED driver chip via the external conductor of the second RF connector. The main circuit board PCB1 is provided with a third capacitor element R3, and the external conductor of the first RF connector is grounded through the third capacitor element R3. The sub-circuit board is provided with a fourth capacitor element R4, and the external conductor of the second RF connector is grounded through the fourth capacitor element R4.

[0079] Both the first and second RF connectors are RF connectors, referred to as RF connectors. The two RF connectors are positioned corresponding to the two ends of the coaxial cable. The RF connectors are mounted on the corresponding edges of the PCB and serve as the physical interface between the coaxial cable and the antenna radiator / main circuit board. They connect the transmission lines within the PCB board to the shielding layer of the coaxial cable, forming a complete signal path for transmitting LED control signals.

[0080] An RF connector comprises, from the inside out, a center conductor, an insulator, an outer conductor (also called a shield or grounding terminal), and a plastic shell. The center conductor transmits signals; the insulator, located between the center and outer conductors, provides electrical isolation; the outer conductor, typically made of metal, shields against external electromagnetic interference; and the plastic shell protects the internal structure and provides mechanical support. Therefore, an RF connector is not an independent component but rather an extension port of a coaxial cable. Both the RF connector and the coaxial cable employ a concentric conductor structure, with corresponding structural layers, together forming a complete RF transmission link.

[0081] For example, RF connectors include types such as SMA, N-type, and BNC.

[0082] For the first and second RF connectors, the external conductor RF connectorGND of each RF connector is connected to the reference ground of the PCB board through a capacitor element, blocking DC interference (such as voltage source ripple) of the PCB board reference ground, thus blocking the LED signal from entering the antenna reference ground, and providing a low impedance grounding path for 2.4G / 5G RF signals.

[0083] In this embodiment, the main circuit board PCB1 is equipped with a second filter circuit RC, and the LED output of the LED control chip is connected to the external conductor of the first RF connector through the second filter circuit RC. The secondary circuit board PCB2 is equipped with a third filter circuit LC3, and the external conductor of the second RF connector is connected to the signal pin of the LED driver chip through the third filter circuit LC3, thereby realizing the transmission of LED control signals and the grounding of the antenna cable.

[0084] For example, the second filter circuit RC includes a resistive element and a capacitive element. The resistive element is disposed between the LED control chip and the external conductor of the first RF connector, and one end of the capacitive element is grounded, while the other end is disposed between the resistive element and the external conductor of the first RF connector. Thus, in the second filter circuit, the resistive element suppresses high-frequency noise, and the capacitive element blocks DC, thereby suppressing high-frequency noise in the LED control signal while allowing low-frequency LED signals to pass through, ensuring lighting efficiency.

[0085] For example, the third filter circuit LC3 includes an inductor and a capacitor. The inductor is positioned between the external conductor of the second RF connector and the signal pin of the LED driver chip. One end of the capacitor is grounded, and the other end is positioned between the inductor and the signal pin of the LED driver chip. Thus, the third filter circuit can filter out high-frequency noise and ripple, ensuring signal stability and preventing LED flickering or color distortion.

[0086] By using the coordinated design of the second and third filter circuits, both power supply ripple interference and radio frequency signal isolation are solved, ensuring compatibility for multiple modules to coexist.

[0087] The third embodiment of this disclosure provides an antenna system. For the sake of brevity, features that are the same as or similar to those in the first and second embodiments described above will not be repeated. Only features that are different from any of the above embodiments will be described below.

[0088] Figure 4 The diagram schematically illustrates the structure of the main antenna radiator and the auxiliary antenna radiator in an antenna system according to a third embodiment of the present disclosure.

[0089] like Figure 4 As shown, the third embodiment of this disclosure provides an antenna system, wherein the antenna radiators include a main antenna radiator 232A and an auxiliary antenna radiator 232B disposed on both sides of the LED lighting module 231. A sub-circuit board is disposed in an unobstructed area outside the metal casing of the electronic device, and the distance between the sub-circuit board and the metal casing is 6mm to 10mm.

[0090] As can be seen, unlike any of the above embodiments, the antenna system in this embodiment is provided with two antenna radiators. The main antenna radiator 232A and the auxiliary antenna radiator 232B are respectively provided on both sides of the remaining space area of ​​the LED lighting module on the sub-circuit board (such as the blank areas at both ends).

[0091] The distance between the secondary circuit board and the metal chassis is controlled at 6mm~10mm because an excessively large distance will not only make it difficult to fix the secondary circuit board and cause unstable grounding, but will also degrade the parameters of the antenna S21.

[0092] Understandably, in a MIMO (Multiple Input Multiple Output) antenna system, the S21 parameter is the forward propagation coefficient in the scattering parameter (S-Parameter), used to quantify the efficiency of transmitting radio frequency signals from one antenna port to another.

[0093] Figures 5A-5C The schematic illustration shows the S-parameters of a dual-antenna system according to a third embodiment of the present disclosure at an antenna height of 13.58 mm, wherein... Figure 5A The voltage curve of the main antenna radiator. Figure 5B The voltage curve of the auxiliary antenna radiator. Figure 5C This is the forward transmission coefficient curve for a dual-antenna setup.

[0094] like Figures 5A-5CAs shown, the horizontal axis represents frequency in GHz. It can be seen that the antenna system has an antenna height (distance between the secondary circuit board and the metal casing) of 13.58 mm. When the antenna radiator operates at frequencies of 2.4 GHz, 2.5 GHz, 5.15 GHz, and 7.125 GHz, the induced voltage V1 at the port of the main antenna radiator is 2.17 V, 2.32 V, 2.19 V, and 1.57 V, respectively, and the induced voltage V2 at the port of the auxiliary antenna radiator is 2.36 V, 3.11 V, 2.17 V, and 1.73 V, respectively. The forward transmission coefficients S21 of the dual antennas are -16.00 dB, -19.00 dB, -20.73 dB, and -24.38 dB, respectively.

[0095] Figures 6A-6C The schematic illustration shows the S-parameters of a dual-antenna system according to a third embodiment of the present disclosure at an antenna height of 9.58 mm, wherein... Figure 6A The voltage curve of the main antenna radiator. Figure 6B The voltage curve of the auxiliary antenna radiator. Figure 6C This is the forward transmission coefficient curve for a dual-antenna setup.

[0096] like Figures 6A-6C As shown, the horizontal axis represents frequency in GHz. It can be seen that the antenna system has an antenna height (the distance between the secondary circuit board and the metal casing) of 9.58 mm. When the antenna radiator operates at frequencies of 2.4 GHz, 2.5 GHz, 5.15 GHz, and 7.125 GHz, the induced voltage V1 at the port of the main antenna radiator is 2.22 V, 3.41 V, 1.87 V, and 2.57 V, respectively, and the induced voltage V2 at the port of the auxiliary antenna radiator is 2.67 V, 2.45 V, 2.60 V, and 1.44 V, respectively. The forward transmission coefficients S21 of the dual antennas are -18.86 dB, -20.93 dB, -25.11 dB, and -26.00 dB, respectively.

[0097] Analysis shows that both induced voltages V1 and V2 reflect the radiation efficiency of a single antenna. A higher V1 indicates a greater gain of the main antenna radiator, while a higher V2 indicates a greater gain of the auxiliary antenna radiator. The forward transmission coefficient S21 of the dual antennas directly measures the isolation between them; a smaller S21 indicates less crosstalk and better isolation. Comparatively, regardless of the operating frequency bands (2.4GHz, 2.5GHz, 5.15GHz, and 7.125GHz), the S21 parameter at an antenna height of 9.58mm is lower than that at an antenna height of 13.58mm, ensuring that the S21 parameter is ≤-18dB (e.g., at 2.4GHz, the S21 parameter drops from -16.00dB to -18.86dB). Therefore, when the antenna height is 9.58mm, the mutual coupling interference between antennas is reduced, and the isolation is significantly improved.

[0098] Compared to three-dimensional iron antennas, the antenna system of this embodiment uses a PCB antenna, which is compact and saves on the costs of a separate PCB for the iron antenna, cables connecting the LEDs, and molds for the iron antenna. The S21 parameter is ≤-18dB, meeting communication standard requirements. Furthermore, the PCB antenna is easy to transport, its surface is less prone to scratches, and it has higher impact resistance than iron antennas, preventing deformation and cable core breakage, thus greatly improving the yield rate of the antenna and the entire device.

[0099] Figure 7 The diagram schematically illustrates the structure of an isolation stub in an antenna system according to a third embodiment of the present disclosure.

[0100] like Figure 7 As shown, to further optimize the antenna S21 parameters, the sub-circuit board is provided with an isolation stub 233 adjacent to the auxiliary antenna radiator 232B. The length direction of the isolation stub 233 is perpendicular to the length direction of the auxiliary antenna radiator 232B. For any target antenna radiator, either the main antenna radiator 232A or the auxiliary antenna radiator 232B, a grounding part is provided on the sub-circuit board within a preset distance range from the edge of the target antenna radiator. The grounding part is connected to the metal casing of the electronic device; wherein, the preset distance range is determined according to the operating frequency band of the target antenna radiator.

[0101] An isolation stub perpendicular to the antenna is installed on one side of the auxiliary antenna radiator to achieve signal isolation between the two antennas, optimize the S21 parameters, and reduce signal crosstalk. For example, the isolation stub can be a metallic conductor (such as copper foil).

[0102] A grounding section is provided on the secondary circuit board near the auxiliary antenna radiator, serving as a grounding point to the metal casing, thereby improving the isolation between the two antennas. The mutual interference current generated by the main and auxiliary antenna radiators during operation is absorbed by the metal casing through the grounding section, rather than radiated into space, reducing signal crosstalk.

[0103] For example, a preset distance range can be determined based on the electromagnetic wave wavelength corresponding to the operating frequency band of the target antenna radiator. Then, based on this preset distance range, the grounding part can be controlled to be as close as possible to the antenna feed point to minimize the high-frequency return path length and avoid electromagnetic interference and efficiency loss. This embodiment does not limit the type of grounding part. For example, the grounding part can be a single-point grounding, multi-point grounding, or a hybrid grounding.

[0104] Taking a Bluetooth antenna as the target antenna radiator, operating at a frequency of 2.4GHz, as an example, and using an FR4 board as the secondary circuit board, the preset distance range is set to be less than 4.3mm to reduce the ground loop area and lower radiated noise. The grounding part can be, for example, a series of grounding holes arranged around the Bluetooth antenna feed point (i.e., the antenna edge), with a hole spacing of less than 4.3mm.

[0105] For example, the grounding part can be conductive foam. The conductive foam is placed between the sub-circuit board and the metal casing of the electronic device to achieve grounding connection between the sub-circuit board and the metal chassis, thereby improving the antenna's radio frequency performance.

[0106] The above are merely illustrative examples, and the embodiments disclosed herein are not limited thereto. For example, the pattern size of the antenna radiator, the distance between the sub-circuit board and the metal casing, the length of the isolation stub, and the grounding position of the grounding part are all specific implementation cases for specific operating frequency bands (such as 2.4G, 5G, 6G) and project scenarios, and are not the only solutions. From the perspective of antenna impedance, the high efficiency of the antenna radiator is essentially due to impedance matching achieving maximum power transmission. The pattern size of the antenna radiator and the matching network are both for achieving impedance matching. Different antenna radiators can be adapted by adjusting the length of the isolation stub or the grounding position of the conductive foam to ensure the isolation and RF performance between antennas. In addition, different frequency band resonances can be achieved by adjusting parameters such as the trace length, width, and spacing of the antenna radiator on the sub-circuit board.

[0107] It should be noted that the secondary circuit board in any embodiment of this disclosure is usually a small secondary board with a maximum length of about 80mm to 90mm and a maximum width of about 30mm, which is smaller than the size of the main circuit board.

[0108] In summary, the antenna system provided in this disclosure integrates the LED light PCB board with the antenna, significantly improving space utilization and PCB board reuse. Compared to traditional independent iron antennas and brand logo components, this integrated assembly solution effectively reduces assembly costs. When using a PCB antenna, it performs better in terms of impact and drop resistance, preventing antenna damage due to collisions or drops, thereby ensuring stable signal transmission and maintaining good operating performance. Furthermore, the antenna is located away from key components on the PCB board that could affect it, thus avoiding most noise problems.

[0109] Based on the antenna system described above, this disclosure also provides an electronic device. The following will describe... Figure 8 The electronic device according to embodiments of this disclosure will be described in detail.

[0110] Figure 8 A schematic diagram of an electronic device according to an embodiment of the present disclosure is shown.

[0111] like Figure 8 As shown, the electronic device 800 of this embodiment includes a metal casing 810, a main circuit board 811, a secondary circuit board 820, and an antenna system 822 of any of the above embodiments.

[0112] The main circuit board 811 is located inside the metal casing 810, and the main circuit board 811 is equipped with a wireless communication module 811A and an LED control chip 811B.

[0113] The secondary circuit board 820 is located outside the metal casing 810, and the secondary circuit board 820 is equipped with an LED lighting module 821.

[0114] The antenna system 822 is electrically connected to the main circuit board 811 and the sub-circuit board 820 respectively.

[0115] In the electronic device of this disclosure embodiment, the antenna system 822 includes an antenna radiator, a coaxial cable, and electronic components (such as radio frequency connectors, filter circuits, voltage sources, inductors, capacitors, matching networks, etc.) disposed on a main circuit board or a sub-circuit board.

[0116] It should be noted that the embodiment of the antenna system 822 of the electronic device 800 is similar to that of any of the antenna system embodiments described above, and the technical effects achieved are also similar. For specific details, please refer to the embodiment of any of the antenna systems described above, which will not be repeated here.

[0117] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0118] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0119] Those skilled in the art will understand that the features described in the various embodiments of this disclosure can be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in this disclosure. In particular, the features described in the various embodiments of this disclosure can be combined and / or combined in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0120] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. An antenna system applied to an electronic device, the electronic device being provided with a main circuit board, the main circuit board being provided with a wireless communication module and an LED control chip, characterized in that: The antenna system includes an antenna radiator and a coaxial cable, wherein the antenna radiator is mounted on a sub-circuit board with an LED lighting module. The antenna radiator is connected to the radio frequency port of the wireless communication module through the center conductor of the coaxial cable, and the LED lighting module is connected to the main circuit board through the center conductor. The main circuit board is used to supply power to the LED lighting module through the center conductor. The LED lighting effect module is connected to the LED control chip through the shielding layer of the coaxial cable. The LED control chip is used to control the LED lighting effect module to display the corresponding lighting effect by outputting LED control signals.

2. The antenna system according to claim 1, characterized in that, The sub-circuit board is provided with: A matching network is provided, through which the center conductor is connected to the antenna radiator. The matching network is used to match the impedance of the antenna radiator with the target impedance of the coaxial cable.

3. The antenna system according to claim 2, characterized in that, The main circuit board is provided with a first capacitor element, and the radio frequency port of the wireless communication module is connected to the center conductor through the first capacitor element. The sub-circuit board is provided with a second capacitor element, and the center conductor is connected to the matching network through the second capacitor element.

4. The antenna system according to claim 1, characterized in that, The main circuit board is provided with a first inductor and a voltage source for supplying power to the LED lighting module. The voltage source is connected to the center conductor through the first inductor. The sub-circuit board is equipped with a first filter circuit, and the center conductor is connected to the LED lighting module through the first filter circuit.

5. The antenna system according to claim 1, characterized in that, The LED lighting module includes an LED driver chip and LED beads electrically connected to the LED driver chip; The main circuit board is connected to the power supply pin of the LED driver chip through the central conductor; The LED control chip transmits the LED control signal to the signal pin of the LED driver chip through the shielding layer; The LED driver chip is used to drive the LED beads to display corresponding lighting effects by parsing the LED control signals.

6. The antenna system according to claim 5, characterized in that, The antenna system also includes: A first radio frequency connector is disposed on the main circuit board; A second radio frequency connector is disposed on the sub-circuit board; The coaxial cable has a first end and a second end arranged opposite to each other, wherein the shielding layer of the first end of the coaxial cable is connected to the LED control chip through the external conductor of the first RF connector, and the shielding layer of the second end of the coaxial cable is connected to the signal pin of the LED driver chip through the external conductor of the second RF connector. The main circuit board is provided with a third capacitor element, and the external conductor of the first RF connector is grounded through the third capacitor element; The sub-circuit board is provided with a fourth capacitor element, and the external conductor of the second RF connector is grounded through the fourth capacitor element.

7. The antenna system according to claim 6, characterized in that, The main circuit board is provided with a second filter circuit, and the LED control chip is connected to the external conductor of the first RF connector through the second filter circuit; The sub-circuit board is equipped with a third filter circuit, and the external conductor of the second RF connector is connected to the signal pin of the LED driver chip through the third filter circuit.

8. The antenna system according to claim 1, characterized in that, The antenna radiator includes a main antenna radiator and an auxiliary antenna radiator disposed on both sides of the LED lighting module; The sub-circuit board is provided with an isolation stub adjacent to the auxiliary antenna radiator, and the length direction of the isolation stub is perpendicular to the length direction of the auxiliary antenna radiator; For any target antenna radiator among the main antenna radiator and the auxiliary antenna radiator, a grounding part is provided on the sub-circuit board within a preset distance range from the edge of the target antenna radiator, and the grounding part is connected to the metal casing of the electronic device; wherein, the preset distance range is determined according to the operating frequency band of the target antenna radiator.

9. The antenna system according to claim 1, characterized in that, The sub-circuit board is located in an unobstructed area outside the metal casing of the electronic device, and the distance between the sub-circuit board and the metal casing is 6mm~10mm.

10. An electronic device, characterized in that, include: Metal casing; The main circuit board is located inside the metal casing, and the main circuit board is equipped with a wireless communication module and an LED control chip. A secondary circuit board is disposed outside the metal casing, and the secondary circuit board is equipped with an LED lighting module; The antenna system according to any one of claims 1-9 is electrically connected to the main circuit board and the sub-circuit board respectively.

Images