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A DC-2.5GHz wide dynamic-range attenuator in 0.13μm CMOS technology

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3 Author(s)
Dogan, H. ; California Univ., Berkeley, CA, USA ; Meyer, R.G. ; Niknejad, A.M.

A CMOS attenuator with wide dynamic range has been designed and fabricated in a 0.13μm CMOS process. The design employs two nonidentical cascaded T-stages that are activated consecutively to improve linearity. The design operates in the frequency band of DC-2.5GHz with 0.9-3.5dB insertion loss and 42dB maximum attenuation in the entire frequency range. Worst case SII is -8.2dB across the frequency band. The design achieves an IIP3 of +20 dBm at mid-attenuation.

Published in:

VLSI Circuits, 2005. Digest of Technical Papers. 2005 Symposium on

Date of Conference:

16-18 June 2005