Design of a 2.45GHz wireless temperature sensor in 130nm CMOS technology

Author

Khorramnejadi, M. ; Nejdel, Anders ; Liliebladh, M. ; Sjuland, H.

Author_Institution

Dept. of Electr. & Inf. Technol., Lund Univ., Lund, Sweden

fYear

2014

fDate

22-25 June 2014

Firstpage

377

Lastpage

380

Abstract

This paper presents a wireless temperature sensor implemented in a 130nm CMOS process. A sensor measures the temperature and presents it as a voltage signal that is mapped to a PWM signal. The PWM signal switches a VCO on and off, generating an OOK modulated RF transmission. The circuit is supplied by 1.2V and has a temperature range of 0~100 degrees Celsius. The sensor sensitivity is measured as 1.8mV/degrees Celsius. The total power consumption of the chip is 7.75mW and the RF output power is measured as 0dBm. The VCO frequency is 2.5 GHz, with 350MHz (14%) tuning range.

Keywords

CMOS integrated circuits; UHF detectors; UHF integrated circuits; UHF oscillators; amplitude shift keying; integrated circuit design; power measurement; pulse width modulation; temperature measurement; temperature sensors; voltage-controlled oscillators; wireless sensor networks; CMOS technology; OOK modulated RF transmission; PWM voltage signal; VCO; frequency 2.45 GHz; frequency 2.5 GHz; frequency 350 MHz; power 7.75 mW; size 130 nm; temperature 0 degC to 100 degC; temperature measurement; voltage 1.2 V; wireless temperature sensor; Pulse width modulation; Radio frequency; Temperature measurement; Temperature sensors; Voltage-controlled oscillators; Wireless communication; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

New Circuits and Systems Conference (NEWCAS), 2014 IEEE 12th International

Conference_Location

Trois-Rivieres, QC

Type

conf

DOI

10.1109/NEWCAS.2014.6934061

Filename

6934061