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A 440pJ/bit 1Mb/s 2.4GHz multi-channel FBAR-based TX and an integrated pulse-shaping PA

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4 Author(s)
Paidimarri, A. ; Massachusetts Inst. of Technol., Cambridge, MA, USA ; Nadeau, P.M. ; Mercier, P.P. ; Chandrakasan, A.P.

A 2.4GHz TX in 65nm CMOS defines three channels using three high-Q FBARs and supports OOK, BPSK and MSK. The oscillators have -132dBc/Hz phase noise at 1MHz offset, and are multiplexed to an efficient resonant buffer. Optimized for low output power ≈-10dBm, a fully-integrated PA implements 7.5dB dynamic output power range using a dynamic impedance transformation network, and is used for amplitude pulse-shaping. Peak PA efficiency is 44.4% and peak TX efficiency is 33%. The entire TX consumes 440pJ/bit at 1Mb/s.

Published in:

VLSI Circuits (VLSIC), 2012 Symposium on

Date of Conference:

13-15 June 2012