Communication device with simultaneous wireless LAN and blue-tooth communication capability

摘要

A communication device is disclosed, having a wireless LAN transceiver, a wireless LAN demodulation circuit, a Bluetooth transceiver, a Bluetooth demodulation circuit, an oscillator, and a mixer. The wireless LAN transceiver conducts communication in a first frequency band and the wireless LAN demodulation circuit demodulates the wireless LAN signals. The Bluetooth transceiver conducts communication in a second band and a third frequency band, which are higher and lower than the first frequency band, respectively. The oscillator generates oscillating signals. The mixer mixes the signals in the second frequency band with an oscillating signal, which is higher than the second frequency band, and mixes the signals in the third frequency band with another oscillating signal, which is lower than the third frequency band to generate mixed signals. The Bluetooth demodulation circuit demodulates the mixed signals of the mixer.

主权项

1. A communication device, comprising:
a wireless LAN transceiver, for receiving a first signal in a first frequency band in a first period and for receiving a second signal in the first frequency band in a second period; a Bluetooth transceiver, for receiving a third signal in a second frequency band in the first period and for receiving a fourth signal in a third frequency band in the second period; an oscillator for generating a fifth signal and a sixth signal; a mixer for mixing the third signal and the fifth signal to generate a seventh signal, and for mixing the fourth signal and the sixth signal to generate an eighth signal; a wireless LAN demodulation circuit for demodulating the first signal and the second signal; and a Bluetooth demodulation circuit for demodulating the seventh signal and the eighth signal; wherein the first frequency band locates between a first frequency and a second frequency; the second frequency band locates between a third frequency and a fourth frequency; the third frequency band locates between a fifth frequency and a sixth frequency; the fifth signal and the sixth signal have a seventh frequency and a eighth frequency, respectively; the second frequency is higher than the first frequency; the fourth frequency is higher than third frequency; the sixth frequency is higher than the fifth frequency; the third frequency is higher than or equal to the second frequency; the sixth frequency is lower than or equal to the first frequency; the seventh frequency is higher than or equal to the fourth frequency; and the eighth frequency is lower than or equal to the fifth frequency.