Analog Path for Triple Band WCDMA Polar Modulated Transmitter in 90nm CMOS

Siraj Akhtar, P. Litmanen, Mehmet Ipek, Jerry Lin, Salvatore Pennisi, Feng-Jung Huang, Robert Bogdan Staszewski

Digest of papers - IEEE Radio Frequency Integrated Circuits Symposium · 2007 · 18 citations · 3 references

Concepts

Abstract

We present a fully integrated analog path for a 3G polar transmitter in 90nm CMOS. It includes a quad band Digitally Controlled Oscillator providing modulation for the phase data and a single stage Digital Pre-Power Amplifier that combines the phase and amplitude signals while providing the dynamic range for WCDMA. The chip, with integrated LDOs, consumes 60mA from a 1.4V supply while providing 11dBm CW power at 1950MHz, 87dB dynamic range without any calibration, and PN of - 157dBc/Hz at 40MHz.

References

3