Open Access-81dB PSRR regulated cascode fully MOS bandgap reference for power management in RF energy harvesting systems
Author(s) -
Mohd Khairi Bin Zulkalnain,
Noor Ain Kamsani,
Roslina Mohd Sidek,
Fakhrul Zaman Rokhani,
Shaiful Jahari Hashim,
Mohd Nizar Hamidon
Publication year - 2019
Publication title -
indonesian journal of electrical engineering and computer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.241
H-Index - 17
eISSN - 2502-4760
pISSN - 2502-4752
DOI - 10.11591/ijeecs.v14.i2.pp706-714
Subject(s) - power supply rejection ratio , bandgap voltage reference , cmos , electrical engineering , cascode , electronic engineering , ranging , power (physics) , energy harvesting , engineering , computer science , telecommunications , amplifier , voltage reference , physics , voltage , quantum mechanics , dropout voltage
In the midst of technological advance where everything is connected via the internet, IoT is emerging as a potential solution to everything, ranging from health wearables to smart city. An RFEH power management system has promising benefits that could further improve the powering of IoT devices as it has potential for clean energy as well as other advantages which consists of a rectifier, bandgap reference and LDO as the main core. However, the main challenge is supplying clean and low noise power to sensitive circuits such as low power sensors, VCOs and PLLs. A high PSRR bandgap reference that rejects noise at the power supply is needed so that the circuitry powered by RFEH systems would be able to function properly. This paper presents a bandgap with MOS PTAT and CTAT extraction achieving a PSRR of -81dB at a V ref of 0.415V was designed on 130nm CMOS technology targeting IoT RFEH devices that operate at sub-threshold and near-threshold region that exhibits improvement over the base design.