A Linear-in-decibel RF Power Detector for Microwave Measurements in the S-band Frequency using CMOS Technology

Jules Guiliary, Ravanne and Yi Lung, Then and Hieng Tiong, Su and Ismat, Hijazin (2021) A Linear-in-decibel RF Power Detector for Microwave Measurements in the S-band Frequency using CMOS Technology. In: 2021 IEEE 12th Annual Information Technology, Electronics and Mobile Communication Conference (IEMCON), 27-30 October 2021, Vancouver, BC, Canada.

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Official URL: https://ieeexplore.ieee.org/document/9623225


This paper investigates the implementation and design of a low-power linear-in-decibel RF power detector using a 180-nm standard CMOS process for applications in the S-band frequency. The proposed circuit aims at applications in wireless communication and as sensing devices in the agricultural sector. A logarithmic amplifier is employed to achieve wide dynamic range linear-in-decibel output. A current-source-load RMS power detector is placed before the logarithmic amplifier to improve the RF power detector sensitivity. MOSFETS square-law principle in the saturation region is exploited to perform power detection. The logarithmic amplifier is realized using five identical differential limiting amplifiers, amplifying and compressing the wide dynamic range input signal. Each limiting amplifier is designed as 11.2 dB gain cells. The circuit is designed and simulated using 180-nm CMOS process parameters. The simulation results demonstrate that the RF power detector can detect power from −50 dBm to 0 dBm. The power detector operating frequency is from 2 GHz to 4 GHz, and its supply voltage is 1.8 V. The total power dissipation is 0.610 mW.

Item Type: Proceeding (Paper)
Uncontrolled Keywords: CMOS technology, Low-power, Microwave systems, RF circuits, sensors.
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Academic Faculties, Institutes and Centres > Faculty of Engineering
Faculties, Institutes, Centres > Faculty of Engineering
Depositing User: Yi Lung
Date Deposited: 09 Aug 2022 02:43
Last Modified: 09 Aug 2022 02:43
URI: http://ir.unimas.my/id/eprint/39150

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