The high
frequency module is used exclusively for UHF wireless MIC. With audio
circuit, transmitting module (TX) could be made into a complete wireless
speaker or belt-pack transmitter. Receiving module (RX) consists of
noise amplification, one time frequency mixing, twice mixing, local
oscillation, MCU frequency control and other functions. With audio
circuit, it could be made into a complete wireless MIC receiver. By
applying D2008 directly, factories could simplify design and production
of UHF wireless MIC, and adopt the module easily in mining industry and
electronic consumer system equipments. RX sensitivity is -111dBm@12dBSINAD.