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Power Consumption of Integrated Low-Power Receivers

Nilsson, Emil, Svensson, Christer
2014

Artikel i tidskrift (Refereegranskat)

Abstract:

With the advent of Internet of Things (IoT) it has become clear that radio-frequency (RF) designers have to be aware of power constraints, e.g., in the design of simplistic ultra-low power receivers often used as wake-up radios (WuRs). The objective of this work, one of the first systematic studies of power bounds for RF-systems, is to provide an overview and intuitive feel for how power consumption and sensitivity relates for low-power receivers. This was done by setting up basic circuit schematics for different radio receiver architectures to find analytical expressions for their output signal-to-noise ratio including power consumption, bandwidth, sensitivity, and carrier frequency. The analytical expressions and optimizations of the circuits give us relations between dc-energy-per-bit and receiver sensitivity, which can be compared to recent published low-power receivers. The parameter set used in the analysis is meant to reflect typical values for an integrated 90 nm complementary metal-oxide-semiconductor fabrication processes, and typical small sized RF lumped components.

Nyckelord: Metal–oxide–semiconductor (CMOS); Internet of things (IoT); low noise; low-power; receiver; wake-up radio (WuR)

Citera: Nilsson, Emil & Svensson, Christer, Power Consumption of Integrated Low-Power Receivers, IEEE Journal on Emerging and Selected Topics in Circuits and Systems., 4:3, s. 273-283, 2014