Carrier leakage suppression in direct-conversion WCDMA transmitters

Carrier leakage suppression techniques are employed to enable direct up-conversion transmitters to meet WCDMA specifications. Implemented in 0.13/spl mu/m CMOS, the complete TX IC delivers +2.5dBm output power and consumes 45mA at 1.5V. The IC achieves +19dBm OIP3, 4.3% EVM, -38dBc ACLR and an output noise in the DCS band of -146dBm/Hz.