Bluetooth antenna device with three-dimensional structure and Bluetooth equipment

Abstract

The invention is suitable for the technical field of Bluetooth antennas and provides a Bluetooth antenna device of a three-dimensional structure and Bluetooth equipment. The Bluetooth antenna device comprises a PCB substrate of a multi-layer structure which is provided with a first antenna reference ground and a second antenna reference ground, a first metal edge covering structure, a second metaledge covering structure, a third metal edge covering structure, a first antenna structure, a second antenna structure and a through hole having a conductor characteristic, wherein the first antenna reference ground and the second antenna reference ground are connected through the first metal edge covering structure, the first antenna structure comprises at least two antenna line segments etched on the PCB substrate, in the first antenna structure, two adjacent antenna line segments are connected through the second metal edge covering structure and the third metal edge covering structure, thesecond antenna structure comprises an antenna line segment etched on the PCB substrate,, and the first antenna structure is connected with the second antenna structure through the through hole. The Bluetooth antenna device has the advantages of being small in structural size, low in cost, good in parameter consistency, high in anti-electromagnetic interference capacity and the like.

Description

technical field [0001] The invention belongs to the technical field of bluetooth antennas, and in particular relates to a bluetooth antenna device with a three-dimensional structure and a bluetooth device. Background technique [0002] Bluetooth antenna technology is a widely used low-cost, low-power wireless communication technology that works in the 2.4GHz frequency band. [0003] Among them, the Bluetooth headset is a consumer audio product that uses Bluetooth antenna technology to wirelessly transmit voice, music, and related data to related smart devices; and the antenna is an important component for transmitting and receiving electromagnetic waves in the Bluetooth headset; from the structure Types and application materials are summarized. Commonly used antennas include the following types of antennas: LDS (laser) antennas, FPC antennas, ceramic antennas, and PCB on-board antennas; while LDS antennas, FPC antennas, and ceramic antennas are due to structural and material...

AI Technical Summary

Problems solved by technology

Similarly, in order to meet the needs of market consumption, the appearance design of bluetooth earphones is becoming more and more beautiful, smaller, and more diversified in function; and the miniaturization of the appearance of earphones will inevitably reduce the area of ​​PCB, and the reduction of PCB area Small size and diversified functions will lead to increased power consumption of related circuits due to electromagnetic interference, noise during music playback and calls; similarly, electromagnetic interference will also change the radio frequency parameters of the Bluetooth antenna, which will affect the connection between the Bluetooth headset and The reduction of the communication connection distance and the quality of the communication connection of related smart devices will affect the stability and reliability of the product

[0005] In addition, the Bluetooth headset is constructed from different devices. According to the scene requirements of the Bluetooth headset, the Bluetooth antenna needs to meet the omni-directional or multi-directional antenna when designing; therefore, the Bluetooth antenna and the RF signal loop near the short It is forbidden to place devices with conductor characteristics within the range, so as to ensure that Bluetooth radio frequency signals can be effectively transmitted / received; this is the radio frequency "clearance area" mentioned by some communication terminals and communication equipment; in general Bluetooth products In the application, based on the performance and parameter requirements of the Bluetooth antenna, devices with conductor characteristics cannot be placed within the minimum clearance area of ​​5mm around the Bluetooth antenna; while the components of the Bluetooth headset include batteries, speakers, buttons, microphones and batteries. The soldering wires on the PCB and the copper foil on the PCB are all devices with conductor characteristics; these devices are placed in a limited structural space, which poses a harsh challenge to the design and development of the Bluetooth antenna, which is also an urgent need for many Bluetooth headset manufacturers to solve technical difficulties

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