Intelligent and Adaptive RF Models for Wearable Devices

Abstract

The present invention proposes an intelligent adaptive radio frequency model suitable for wearable devices, including an antenna feed signal part, an antenna main body part, a ground switch feed part and a switch circuit device part; the antenna main body part receives a signal source through the antenna feed signal part, the signal source is debugged and connected to the ground switch feed part and the switch circuit device part through a matching circuit, the signal source is connected to the switch circuit part and adjusted through the switch circuit device part; the antenna feed signal part is connected to the signal source through a matching circuit, and forms a radiation unit together with the antenna main body, and is switched into two different antenna forms through the switch circuit at the ground feed. By this, the present invention has the advantages of being able to meet more complex usage environments and places, achieving the effect of modifying the antenna radiation directivity by switching the antenna form, and meeting the needs of more complex usage environments.

Description

Technical Field

[0001] The present invention belongs to the technical field of radio frequency models, and in particular relates to an intelligent adaptive radio frequency model suitable for wearable devices. Background Art

[0002] At present, with the popularity of smart wearable devices, more and more wearable devices have the ability of wireless communication. It can be said that the quality of wireless communication capabilities is directly related to the user's experience of the product. Among them, audio wearable devices with wireless communication capabilities are particularly obvious, the most important of which are TWS Bluetooth headsets. From the perspective of improving the actual experience, if the antenna can have two different forms of switching at the same time, it can change the radiation direction of the antenna to a certain extent, improve the actual experience of the product, and make consumers more satisfied. Summary of the invention

[0003] The present invention proposes an intelligent adaptive radio frequency model suitable for wearable devices, which can achieve the effect of modifying the radiation directivity of the antenna by switching the shape of the antenna to meet the needs of more complex usage environments.

[0004] The technical solution of the present invention is implemented as follows: an intelligent adaptive radio frequency model suitable for wearable devices, characterized in that it includes an antenna feed pin signal part, an antenna main body part, a ground switch feed pin part and a switch circuit device part;

[0005] The antenna body receives the signal source through the antenna feed pin signal part. The signal source is debugged through the matching circuit and connected to the ground switch feed pin part and the switch circuit device part.

[0006] The signal source is connected to the switch circuit part and adjusted through the switch circuit device part to form two different antenna forms, monopole and loop, to change its radiation direction;

[0007] The signal part of the antenna feed pin is connected to the signal source through a matching circuit, and together with the main part of the antenna forms a radiation unit, and is switched into two different antenna forms through a switching circuit at the ground feed pin.

[0008] The design scheme of this model includes the design schematic diagram of the antenna, a 3D RF model schematic diagram, and simulated RF parameters. The design schematic diagram is a schematic diagram of the components of the antenna, including the antenna signal feed pin part, the antenna main body part, the ground switch feed pin part, and the switch circuit part; the 3D RF model schematic diagram shows the 3D model effect of this antenna design scheme, including the antenna signal feed pin part, the antenna main body part, the ground switch feed pin part, and the switch circuit device part; the simulated RF parameters are RF parameters calculated and provided by the HFFS simulation software, including the antenna VSWR parameters, SMITH impedance circle diagram parameters, efficiency parameters, antenna gain parameters, and antenna radiation pattern. The present invention provides a novel design scheme for a 2.4GHz intelligent adaptive RF model, which greatly improves the actual measurement experience, has great practical value, and can provide better

[0009] Antenna Solutions.

[0010] As a preferred implementation, the antenna body is connected to a signal source and to a back-end circuit, and the matching circuit is adjusted to resonate the 2.4G-2.5G frequency band of the antenna body, thereby forming the main radiator of the antenna body.

[0011] As a preferred embodiment, the switch circuit device part is a single-pole double-throw active tuning switch circuit, and the grounding switch feed pin part is electrically connected to the single-pole double-throw active tuning switch circuit before being connected to the main board ground layer, and the grounding switch feed pin part is connected to the main board ground layer through the RF1 path or RF2 path of the switch circuit device part.

[0012] As a preferred implementation, the signal current path is connected to the mainboard formation control switch circuit device part through RF1 or RF2 to switch the circuit path, thereby realizing different antenna forms.

[0013] As a preferred implementation, the matching circuit is a π-shaped matching network.

[0014] After adopting the above technical solution, the beneficial effects of the present invention are:

[0015] ①It can make full use of the current internal structure of TWS Bluetooth headsets;

[0016] ② Two different antenna forms can be realized by switching the antenna form to change its radiation directivity;

[0017] ③It can enhance the actual experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 , the design principle diagram of the antenna includes an antenna feed pin signal part 101, an antenna main body part 102, a ground switch feed pin part 103, and a switch circuit device part 104;

[0020] Figure 2 , Schematic diagram of 3D RF model;

[0021] Figure 3 , set the excitation signal in the antenna feed signal part through HFFS software, and calculate the RF parameters of the monopole antenna through software simulation, including VSWR parameters, Log Mag parameters, passive efficiency and antenna radiation pattern;

[0022] Figure 4 , set the excitation signal in the antenna feed signal part through HFFS software, and add the GND feed pin, and calculate the RF parameters of the loop antenna through software simulation, including VSWR parameters, Log Mag parameters, passive efficiency and antenna radiation pattern. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] according to Figure 1 to Figure 4As shown, an intelligent adaptive radio frequency model suitable for wearable devices is characterized in that it includes an antenna feed signal part 101, an antenna main body part 102, a ground switch feed part 103 and a switch circuit device part 104; the antenna main body part 102 receives a signal source through the antenna feed signal part 101, the signal source is debugged and connected to the ground switch feed part 103 and the switch circuit device part 104 through a matching circuit, the signal source is connected to the switch circuit part and adjusted through the switch circuit device part 104 to form two different antenna forms of monopole and loop to change its radiation direction; the antenna feed signal part 101 is connected to the signal source through a matching circuit, and forms a radiation unit together with the antenna main body part 102, and is switched into two different antenna forms through the switch circuit at the ground feed.

[0025] The antenna main body 102 is connected to the signal source and the back-end circuit. The 2.4G-2.5G frequency band of the antenna main body 102 is resonated by adjusting the matching circuit to form the main radiator of the antenna main body 102. The switch circuit device part 104 is a single-pole double-throw active tuning switch circuit. Before the grounding switch feed pin part 103 is connected to the main board ground, it is electrically connected to the single-pole double-throw active tuning switch circuit. The grounding switch feed pin part 103 is connected to the main board ground through the RF1 path or RF2 path of the switch circuit device part 104. The signal current path is connected to the main board ground through the RF1 path or RF2 path to control the switch circuit device part 104 to switch the circuit path, so as to realize different antenna forms. The matching circuit is a π-shaped matching network.

[0026] Since the main application direction is Bluetooth headsets, the frequency range is designed to be 2.4-2.5GHz. The signal source is connected to the antenna main body 102 through the antenna feed signal part 101, and is debugged through its matching circuit. The ground switch feed part 103 and the switch circuit part are connected. Through the switch circuit adjustment, two different antenna forms are formed to change their radiation direction. The antenna feed pin signal part 101 is connected to the signal source through the matching circuit, and forms a radiation unit together with the antenna main body part 102, and is switched into two different antenna forms through the switch circuit at the ground feed pin to enhance the actual experience. In the antenna main body part 102 described in the present invention, the antenna main body part 102 is connected to the signal point and connected to the back-end circuit. In the antenna excitation vibrator part described in the present invention, it is characterized in that the antenna excitation vibrator part is a suspended design, not connected to any other part, and only generates coupling excitation with the antenna main body part 102, the top reference ground, and the bottom reference ground; in the ground switch feed pin part 103 described in the present invention, it is characterized in that before it is connected to the motherboard ground formation, there is a single-pole double-throw switch circuit, which is connected to the motherboard ground formation through the switch circuit. In the switch circuit device part 104 described in the present invention, it is characterized in that it can be controlled by software to switch the circuit path to achieve the effect of realizing different antenna forms. The advantages of this test method are: ① It can make full use of the current internal structure of the TWS Bluetooth headset; ② It can realize two different forms of antennas by switching the antenna form to change its radiation directivity; ③ It can enhance the actual experience.

[0027] The design scheme of this model includes the design principle diagram of the antenna, the schematic diagram of the 3D RF model, and the simulated RF parameters. The design principle diagram is a schematic diagram of the components of the antenna, including the antenna signal feed pin part, the antenna main body part 102, the ground switch feed pin part 103, and the switch circuit part; the 3D RF model schematic diagram shows the 3D model effect of this antenna design scheme, including the antenna signal feed pin part, the antenna main body part 102, the ground switch feed pin part 103, and the switch circuit device part 104; the simulated RF parameters are the RF parameters calculated and provided by the HFFS simulation software, including the VSWR parameters of the antenna, the SMITH impedance circle diagram parameters, the efficiency parameters, the antenna gain parameters, and the antenna radiation pattern. The present invention provides a new design scheme for a 2.4GHz intelligent adaptive RF model, which greatly improves the actual measurement experience, has great practical value, and can provide a better antenna solution.

[0028] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent adaptive radio frequency model suitable for wearable devices, characterized in that: Applied to Bluetooth headset, including antenna feed pin signal part, antenna main body part, ground switch feed pin part and switch circuit device part; The antenna main body receives a signal source through the antenna feed pin signal part, and the signal source is debugged by a matching circuit and connected to the ground switch feed pin part and the switch circuit device part; The signal source is connected to the antenna main body through the antenna feed signal part, debugged through its matching circuit, and connected to the ground switch feed part and the switch circuit part, and adjusted through the switch circuit to form two different antenna forms of monopole and loop to change its radiation direction; The antenna feed pin signal part is connected to the signal source through a matching circuit, and together with the antenna main body part forms a radiation unit, and is switched into two different antenna forms through a switch circuit at the ground feed pin; The antenna excitation oscillator is suspended in the air, generating coupling excitation with the antenna body, top reference ground and bottom reference ground. Before the grounding pin of the grounding switch is connected to the grounding layer of the main board, it is first connected to the grounding layer of the main board through a single-pole double-throw switch circuit; The antenna main body is connected to the signal source and the back-end circuit, and the antenna main body resonates in the 2.4G-2.5G frequency band by adjusting the matching circuit to form the main radiator of the antenna main body; The switch circuit device part is a single-pole double-throw active tuning switch circuit, the ground switch feed pin part is electrically connected to the single-pole double-throw active tuning switch circuit before being connected to the mainboard ground layer, and the ground switch feed pin part is connected to the mainboard ground layer through the RF1 path or RF2 path of the switch circuit device part; The signal current path is connected to the mainboard ground control switch circuit device part through the RF1 path or the RF2 path to switch the circuit path, thereby realizing different antenna forms.

2. The intelligent adaptive radio frequency model suitable for wearable devices according to claim 1, characterized in that: The matching circuit is a π-shaped matching network.

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