A Near-Threshold, 0.16 nJ/b OOK-Transmitter With 0.18 nJ/b Noise-Cancelling Super-Regenerative Receiver for the Medical Implant Communications Service

作者：Ma, Chao^*; Hu, Changhui; Cheng, Jiao; Xia, Lingli; Chiang, Patrick Yin

来源：IEEE Transactions on Biomedical Circuits and Systems, 2013, 7(6): 841-850.

DOI：10.1109/TBCAS.2013.2253555

• Low power
• low voltage
• MICS
• near-threshold
• on-chip noise immunity
• pre-distorting linearization
• sub-harmonic injection locking
• super-regenerative receiver
• wireless body area network (WBAN)

A 0.16 nJ/b MICS transmitter and 0.18 nJ/b super-regenerative receiver are demonstrated, where each is specifically designed to operate in the near-threshold region. The low-VDD transmitter utilizes a sub-harmonic injection-locked ring oscillator, edge combiner for frequency multiplication, and class-C power amplifier. The low-VDD receiver introduces a replica super-regenerative receiver as a method to reject common-mode noise sources, such as supply/substrate coupling, thereby reducing undesired self-oscillations and improving BER. Designed in a 90-nm CMOS process, the test-chip measurements show a sensitivity of -80 dBm at 500 kb/s and -65 dBm at 1 Mb/s, respectively, at a BER less than 10(-3), with 340 mu W total power.

• 出版日期2013-12
• 单位复旦大学; 专用集成电路与系统国家重点实验室