a 400 mhz 4.5 nw -63.8 dbm sensitivity wake-up receiver employing an active pseudo-balun envelope detector
Name: Po-Han Wang
Grad Year: 2019
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 (kED > 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.
Industry Application Area(s)
Aerospace, Defense, Security | Electronics/Photonics | Semiconductor