Low-Power Single-Stage Narrowband Transmitter Front-End for 433-MHz Band

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Research units


This paper presents a single-stage CMOS narrowband transmitter front-end for the 433-MHz band for low-power applications. The architecture utilizes an off-chip copper loop both as an inductor in a digitally controlled LC oscillator and a radiating element. The carrier frequency can be tuned using on-chip capacitors in steps smaller than 130 kHz over a 141-MHz tuning range. Measured current consumption, drawn from a 1.2-volt supply, is 315 μA and 2.7 nA during on-time and off-time, respectively. Approximate power of the radiated carrier signal is -27 dBm during continuous wave transmission. Due to a fast start-up time and low leakage, the front-end supports well data rates up to 5 Mbps and low-power modulation schemes where the carrier need not be generated all the time e.g. on-off keying (OOK), pulse-position modulation (PPM) and differential pulseposition modulation (DPPM).


Original languageEnglish
Title of host publication2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings
Publication statusPublished - 26 Apr 2018
MoE publication typeA4 Article in a conference publication
EventIEEE International Symposium on Circuits and Systems - Florence, Italy
Duration: 27 May 201830 May 2018

Publication series

NameIEEE International Symposium on Circuits and Systems proceedings
ISSN (Electronic)2379-447X


ConferenceIEEE International Symposium on Circuits and Systems
Abbreviated titleISCAS
Internet address

    Research areas

  • CMOS integrated circuits, digital control, LC circuits, low-power electronics, oscillators, radio transmitters

ID: 30254496