Answer the most common antenna in Bluetooth module, which is worth understanding!

1、 Bluetooth antenna

As a communication module that can provide Bluetooth communication and Bluetooth interconnection, the reason why Bluetooth module can successfully complete short-distance data transmission without considering the use position or direction is that there is a very important component that undertakes the mission of transmitting and receiving instructions, namely Bluetooth antenna.

Because the current technology can not integrate the antenna into the chip of semiconductor process, in addition to the system chip as the core, the antenna of the module is another key component that affects the transmission characteristics of the Bluetooth module. Therefore, the Bluetooth module and the Bluetooth antenna become an important combination that complement each other.

2、 The most common PCB antenna in Bluetooth module

At present, the most common Bluetooth modules on the market are IPEX port external antenna and PCB antenna.

Bluetooth PCB antenna does not need to be assembled separately. After one adjustment, it does not need to be debugged again. It is not easy to touch and damage, and the assembly is convenient. Its principle is that when transmitting, it converts the high-frequency current of the transmitter into space electromagnetic wave; When receiving, it transforms the electromagnetic wave obtained from space into high-frequency current input receiver. It is a Bluetooth antenna with more applications at present.

The external antenna of IPEX interface has good directional directivity, high efficiency, long transmission distance and strong anti-interference ability. There is no need to debug and match too much. Bluetooth antenna design helps Bluetooth communication achieve better transmission quality. Only by clarifying the use environment of Bluetooth module, and then matching different antennas, can it play their respective roles.