Chang-Jun Oh

A CMOS Implementation Of CDMA/FM IF Signal Processor

A CDMAiFM IF IC is implemented using 0.8 pm 2-metal 2-poly CMOS process. This IC integrates both CDMA and FM IF signal processing functions required for dual mode cellular phone. Rx and Tx frequencies are 85.38 MHz and 130.38 MHz, respectively. The chip size is 5.5 x 6.3 mm2 and the maximum power consumption is 230 mW.

A 3.3 V 0.8 /spl mu/m CMOS single chip IF IC for CDMA/FM cellular phone

A 3.3 v 150 mW IF IC is implemented using 0.8 /spl mu/m CMOS process. This IC integrates both CDMA and FM IF signal processing units and interfaces between IF signals and baseband modem. Rx mixer down-converts 85.38 MHz IF signals into baseband signal, and Tx mixer based on a replica transconductor up-converts baseband signal into a 130.38 MHz IF signal. The chip size is 5.5/spl times/6.3 mm/sup 2/.