Bluetooth device based on Sub-GHz frequency band

• Main Authors: GU YANKE, ZHANG REN, QI FEITAO, CHEN DIANYU
• Format: Patent
• Language: Chinese; English
• Published: 06.12.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION

The utility model provides a Bluetooth device based on a Sub-GHz frequency band, the Bluetooth device comprises a controller, a communication bus, a baseband processing unit, a modem and a radio frequency transmit-receive unit, the controller is connected with the baseband processing unit through the communication bus, and the radio frequency transmit-receive unit is connected with the baseband processing unit through the modem. The radio frequency transmit-receive unit comprises a local oscillator circuit, a mixer circuit, a transmit-receive port and an analog-to-digital conversion circuit, the mixer circuit can convert an input signal into an intermediate frequency, and the analog-to-digital conversion circuit performs analog-to-digital conversion on an intermediate frequency signal so that the baseband processing unit can process the intermediate frequency signal; and the local oscillator circuit converts a signal output by the modulator into an analog signal of a preset frequency band through the phase-lo