RF powered integrated system for IoT applications

Author

Jose, Nithin ; John, Nirmal ; Jain, Prashuk ; Raja, Prashant ; Prabhakar, T.V. ; Vinoy, K.J.

Author_Institution

DESE, Indian Inst. of Sci., Bangalore, India

fYear

2015

fDate

7-10 June 2015

Firstpage

1

Lastpage

4

Abstract

This work describes an ultra low power three chip system that harvests RF energy for sensing applications. The input RF power levels are typically lower than -6dBm. Our scheme uses two commercially available chips, a DC-DC boost converter and a low power microcontroller. In this paper we present the design of a third chip that compliments these to form a complete system. This chip includes an RF-DC rectifier, low power analog to digital converter (ADC) and a resistor emulation circuit (REC). While the REC helps in enhancing the efficiency of the boost converter, the ADC replaces the one present in the microcontroller and reduces the operating power requirements. The chip is designed in standard 0.18μm CMOS process technology.

Keywords

CMOS integrated circuits; Internet of Things; analogue-digital conversion; computerised instrumentation; energy harvesting; rectifying circuits; ADC; CMOS process technology; DC-DC boost converter; Internet of Things; IoT applications; REC; RF energy harvesting; RF powered integrated system; RF-DC rectifier; analog to digital converter; input RF power levels; low power microcontroller; resistor emulation circuit; three chip system; Capacitors; Energy harvesting; Microcontrollers; Radio frequency; Resistors; Schottky diodes; Energy harvesting; Rectifiers; SAR ADC; Wireless Sensor Networks;

fLanguage

English

Publisher

ieee

Conference_Titel

New Circuits and Systems Conference (NEWCAS), 2015 IEEE 13th International

Conference_Location

Grenoble

Type

conf

DOI

10.1109/NEWCAS.2015.7182100

Filename

7182100