Development of the transceiver in the VHF / UHF / GSM / GPS / BLUETOOTH / cordless phone

摘要

Is an implementation digital communication circuit in the IC or other structure CMOS. In the digital domain, this digital circuit is available image frequency or frequency eliminator eliminator negative. The circuit may be provided with a mixer, a switch, a complex filter, a low noise amplifier, and an adder. Image frequency can be removed digitally.