论文信息 - A 2 GHz direct-conversion WCDMA modulator in 0.25 /spl mu/m CMOS

A 2 GHz direct-conversion WCDMA modulator in 0.25 /spl mu/m CMOS

A modulator IC has been designed which delivers -8 dBm maximum output power. Gain is programmable over a 78 dB range in 1dB steps with 0.3 dB accuracy. Consuming 41 mA from a 2.5 V supply, the modulator achieves a 15 dBm OIP3, 50 dBm OIP2, 36 dB rejection of unwanted sideband, 47 dB carrier suppression and -148 dBc/Hz out-of-band-noise.

Qiuting Huang | D. Tschopp | G. Brenna | D. Pfaff

[1] J. Ryynanen,et al. A 22 mA 3.7 dB NF direct conversion receiver for 3G WCDMA , 2001, 2001 IEEE International Solid-State Circuits Conference. Digest of Technical Papers. ISSCC (Cat. No.01CH37177).

[2] Qiuting Huang,et al. A 14mA 2GHz 0.25µm CMOS quadrature demodulator including a low phase noise local oscillator , 2001, Proceedings of the 27th European Solid-State Circuits Conference.