No abstract

No abstract

No abstract

No abstract

A single chip, base-band to RF, BiCMOS transmitter RFIC QwT3100) for dual-band CDMAIAMPS wireless handsets is presented. The RFIC contains base-band I/Q modulator, UHF VCO Buger, IF PLL, VCO, IF and RF VGA 's, image rejection RF upconverter, dual driver amplifers for cellular and PCS bands, and a three wire serial interface to control the chip. The chip operates from a 2.7 to 3.3V supply, a temperature range of -30 to 85" C, and is packaged in a 32 lead 5x5" bump chip carrier (BCC) package. The chip is fabricated using a I8 GHz (analog NPN ft), 0.5 um BiCMOS process.