A 5nW Wake-Up Receiver With Better Than -63dBm Sensitivity via an Active Pseudo-Differential Envelope Detector
Abstract
A 402-405 MHz MICS-band wake-up receiver is presented that achieves -63.8 dBm sensitivity at 4.5 nW. High sensitivity at 400 MHz is accomplished via an 18.5 dB passive voltage gain transformer filter loaded by a high input impedance (Rin > 30 kOhm), high scaling factor (k(ED) > 300), 1.8 nW current re-use pseudo-balun envelope detector, while low power is achieved by operating all active circuits, including the regenerative comparator, baseband correlator, and temperature compensated relaxation oscillator in sub-threshold with a single 0.4 V supply. The chip is fabricated using 0.18 m CMOS SOI process and achieves the highest figure of merit of all direct envelope detection-based wake-up receivers operating above 400 MHz.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 12, 2018
- Accession Number
- AD1052575
Entities
People
- Drew A Hall
- Gabriel M. Rebeiz
- Haowei Jiang
- Li Gao
- Patrick P Mercier
- Pinar Sen
- Po-han P Wang
- Young-Han Kim
Organizations
- University of California, San Diego