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A CDMA2000 zero-IF receiver with low-leakage integrated front-end

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15 Author(s)
H. Waite ; Philips Semicond., San Jose, CA, USA ; P. Ta ; J. Chen ; H. Li
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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 ft BICMOS technology, and occupies 3 mm2.

Published in:

IEEE Journal of Solid-State Circuits  (Volume:39 ,  Issue: 7 )