A 0.18μm CMOS fully integrated RFDAC and VGA for WCDMA transmitters
作者： Shahin Mehdizad Taleie , Yongping Han , Tino Copani , Bertan Bakkaloglu , Sayfe Kiaei
DOI: 10.1109/RFIC.2008.4561408
关键词:
摘要: A digital IF to RF converter architecture with an VGA targeted for WCDMA transmitters is presented. The RFDAC consists of a 1.5-bits current steering DAC embedded semi-digital FIR filter and mixer LC load. controls the output power in 10 dB steps. prototype fabricated 0.18 mum CMOS technology achieves 0 dBm at 2 GHz 33 image rejection. measured rms EVM ACPR show system fulfills standard specifications WCDMA. chip draws 123.9 mA from 1.8 V supply. die area 0.8 times 1.6 mm2.
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