PROJECT TITLE :

Low-Power ASK Detector for Low ModulationIndexes and Rail-to-Rail Input Range - 2016

ABSTRACT:

A high-performance ultrahigh-frequency amplitude shift keying (RAISE) detector for low-power radio-frequency (RF) receivers is proposed. The circuit is based on a high-gain common-source topology with a feedback loop that gives adaptive biasing. Hence, high sensitivity and rail-to-rail input operation are achieved together with low power consumption. The detector was implemented in a standard one hundred thirty-nm complementary metal-oxide-semiconductor technology. Sensitivity measurements demonstrate correct detection of a a pair of-Mb/s ASK-modulated 915-MHz signal with a peak level and a modulation index of around 200 mV and fivep.c, respectively, which suggests that an envelope signal amplitude of as low as 5 mV. The circuit attracts but 3.four µA from a 1.a pair of-V power offer while operating with rail-to-rail RF variations and modulation indexes from 5p.c to 100p.c. This performance makes the detector appropriate for batteryless systems with RF energy harvesting.