A 1.2 V, 130 nm CMOS parallel continuous-time Sigma Delta ADC for OFDM UWB receivers

作者:Segundo Jokin*; Arias Jesus; Quintanilla Luis; Enriquez Lourdes; Hernandez Jesus M; Vicente Jose
来源:Microelectronics Journal, 2012, 43(4): 288-297.
DOI:10.1016/j.mejo.2012.01.010

摘要

The design and implementation in a 1.2 V, 130 nm CMOS technology of a parallel continuous-time Sigma Delta, modulator for OFDM UWB signals is described. Once the parallel architecture and the metrics used are presented, the NTF is optimized and implemented using a third order lowpass and a fourth order bandpass modulator. Both are CRFB structures which use active-RC integrators. Then, the circuital blocks are discussed and some comments about the test set-up are given. Experimental results show good agreement with both system-level and layout-level simulations, with up to 15 dB DR for QPSK modulation over a signal bandwidth of 528 MHz, with a 62.3 mW power consumption.

  • 出版日期2012-4