A CDMA2000 Zero IF Receiver with Low-Leakage Integrated Front-End

• Main Authors: Waite, H. (Author), Ta, P. (Author), Chen, J. (Author), Li, H. (Author), Gao, M. (Author), Chang, C.S (Author), Chang, Y.S (Author), Redman-White, W. (Author), Charlton, O. (Author), Fan, Y. (Author), Perkins, R. (Author), Brunel, D. (Author), Soudee, E. (Author), Lecacheur, N. (Author), Clamagirand, S. (Author)
• Format: Article
• Language: English
• Published: 2004-07.
• Subjects: Article
• Online Access: Get fulltext

This paper describes a highly integrated CDMA 2000 US-CEL band (880-MHz) receiver. The single-chip zero-IF design incorporates all receiver signal-path functions including the low-noise amplifier (LNA) on a single die. The complete receiver design exceeds the stringent linearity and local oscillator (LO) leakage requirements for this standard arising from the coexistence with narrow-band FM signals. The integrated LNA achieves 1.0-dB noise figure with +9-dBm IIP3 at high gain, and by maintaining LO leakage to the antenna port well below 80~dBm at all gain settings, no external LNA is required. The receiver is fabricated in a 0.25-µm 40-GHz f_tBICMOS technology, and occupies 3mm².