Simple Diode-Less Active RMS Detector Using Special Analog Multipliers

Simple Diode-Less Active RMS Detector Using Special Analog Multipliers

WoS Article

Active root mean square (RMS) diode-less detectors are common analog blocks suitable for various signal processing and communication applications. This brief introduces a new and simple type of this detector suitable for high-speed applications up to several tens of MHz. The circuit was designed with special analog multipliers (MLTs) fabricated in 0.18 mu m CMOS process having power consumption 3.5 mW only at supply voltage 1.8 V. It actually utilizes two MLTs and one external grounded capacitor. The operationability of the RMS detector was verified by a set of experimental measurements and the obtained features were compared with recent solutions including also peak detectors. For this purpose, signals with various waveforms and amplitudes in a range from 5 mV up to 500 mV were used. Good correspondence between theory and real measurements were observed for signals with frequency up to 40 MHz.

Active root mean square (RMS) diode-less detectors are common analog blocks suitable for various signal processing and communication applications. This brief introduces a new and simple type of this detector suitable for high-speed applications up to several tens of MHz. The circuit was designed with special analog multipliers (MLTs) fabricated in 0.18 mu m CMOS process having power consumption 3.5 mW only at supply voltage 1.8 V. It actually utilizes two MLTs and one external grounded capacitor. The operationability of the RMS detector was verified by a set of experimental measurements and the obtained features were compared with recent solutions including also peak detectors. For this purpose, signals with various waveforms and amplitudes in a range from 5 mV up to 500 mV were used. Good correspondence between theory and real measurements were observed for signals with frequency up to 40 MHz.

CMOS; RMS detector; multiplier; rectifier; transconductor

CMOS; RMS detector; multiplier; rectifier; transconductor

ŠOTNER, R.; POLÁK, L.; JEŘÁBEK, J.; PETRŽELA, J.

2024

29.11.2023

IEEE

PISCATAWAY

1558-3791

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS

70

11

United States of America

3983

3987

5

https://ieeexplore.ieee.org/document/10149074

http://hdl.handle.net/11012/244170

sotner_TCSI2_2023
3285403-accepted