WIRELESS DUAL-BAND RECEIVER

摘要

PURPOSE: A wireless dual band receiving device is provided to simultaneously support two wireless communication services. CONSTITUTION: A frequency mixer(430) down-converts two frequency bands amplified in a low noise amplifier into the first and second basebands. Frequency combiners(441,442) combine the first local oscillating signal with the second oscillating signal. The frequency combiners provide the combined signal to the frequency mixer. Baseband filters(451,452) filter band signals except signals of the first and second basebands from signals of the frequency mixer. The baseband filters pass the first and second baseband signals.