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Design and analysis of a current-reuse transmitter for ultra-low power applications

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4 Author(s)
Le Zheng ; Nanoscale Commun. IC Lab., Univ. of California, Irvine, CA, USA ; Hsin-Cheng Yao ; Tzeng, F. ; Heydari, P.

A CMOS current-reuse transmitter for ultra-low power (ULP) applications is presented. It can provide up to 10.2 dBm of output power with a total efficiency of 30% at 2.4 GHz. By utilizing the stacking technique, the average current of a class-E power amplifier is reused by the accompanying VCO and an optional RX block. The breakdown issue associated with the class-E PA is mitigated. A detailed analysis of the current-reuse structure is demonstrated. Practical design issues are discussed and appropriate design guidelines are provided.

Published in:

Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on

Date of Conference:

24-27 May 2009