Zobrazeno 1 - 10
of 783
pro vyhledávání: '"Rui P. Martins"'
Autor:
Abdolraouf Rahmani, Harikrishnan Ramiah, Ka-Meng Lei, Chee Cheow Lim, Nai Shyan Lai, Pui-In Mak, Rui P. Martins
Publikováno v:
IEEE Access, Vol 12, Pp 102202-102211 (2024)
Shortening the startup time of a crystal oscillator is critical in improving the energy efficiency of the Internet of Things (IoT) sensor nodes. This article presents an investigative study on the application of adaptive chirping using zero-phase cro
Externí odkaz:
https://doaj.org/article/79f2f194bec548ada680e7ed623d792e
Autor:
Yong Jack Kee, Harikrishnan Ramiah, Kishore Kumar Pakkirisami Churchill, Gabriel Chong, Saad Mekhilef, Nai Shyan Lai, Yong Chen, Pui-In Mak, Rui P. Martins
Publikováno v:
IEEE Access, Vol 11, Pp 97641-97653 (2023)
This work proposes a CMOS reconfigurable charge pump (CP) for a low-voltage energy harvesting system. It utilizes the low effective resistance from the parallel CP to enhance its power conversion efficiency (PCE). The CP exhibits an adaptive configur
Externí odkaz:
https://doaj.org/article/144097456adf41eb92b48085f583938a
Autor:
Li Fang Lai, Harikrishnan Ramiah, Yee-Chyan Tan, Nai Shyan Lai, Chee-Cheow Lim, Yong Chen, Pui-In Mak, Rui P. Martins
Publikováno v:
IEEE Access, Vol 11, Pp 85237-85258 (2023)
Low-dropout (LDO) voltage regulator has fascinated industry professionals and academia for the past few decades, and this trend is expected to continue in the coming years. The high demand for a stable linear regulator architecture that performs well
Externí odkaz:
https://doaj.org/article/55b4bac6db0f4241a1620dae7c2781f4
Autor:
Wen Xun Lian, Harikrishnan Ramiah, Gabriel Chong, Kishore Kumar Pakkirisami Churchill, Nai Shyan Lai, Saad Mekhilef, Yong Chen, Pui-In Mak, Rui P. Martins
Publikováno v:
IEEE Access, Vol 11, Pp 74121-74135 (2023)
This paper proposes a fully-integrated dual-band CMOS RF energy harvesting (RFEH) front-end with an adaptive frequency selector that can select between two harvesting frequencies of 1.9 GHz and 2.4 GHz. The RFEH front end includes two pairs of on-chi
Externí odkaz:
https://doaj.org/article/27b8e17dd15c42e3a0ecebd9c49e6553
Publikováno v:
IEEE Access, Vol 11, Pp 51117-51132 (2023)
A rooftop photovoltaic (PV) system is a significant solution of building-integrated centralized generation in the low-voltage (LV) DC grid. The drilling-free rooftop PV-inductive wireless power transfer (PV-IWPT) system for the LVDC grid can reduce t
Externí odkaz:
https://doaj.org/article/7986442f31814894a0ec306f28c71f37
Autor:
Teck Seong Chang, Harikrishnan Ramiah, Yang Jiang, Chee Cheow Lim, Nai Shyan Lai, Pui-In Mak, Rui P. Martins
Publikováno v:
IEEE Access, Vol 11, Pp 30498-30514 (2023)
The advancement in Power Management Integrated Circuit (PMIC) has driven the dc-dc conversion technology into a System-on-Chip (SoC) solutions, leveraging CMOS technology scaling from 180nm to 22nm and on-chip passive element integration. Concurrentl
Externí odkaz:
https://doaj.org/article/f54ac76944324a17a107c91f52163d32
Publikováno v:
IEEE Open Journal of Circuits and Systems, Vol 4, Pp 126-138 (2023)
This paper reports an ultra-low-voltage (ULV) single-crystal oscillator-timer (XO-Timer) for sub-0.5 V Bluetooth low-energy (BLE) radios that aims for self-powering by harvesting the ambient energies. Specifically, we tailor an on-chip micropower man
Externí odkaz:
https://doaj.org/article/c4718e70c7054fe0a453e52dea69a5a3
Autor:
Yi Chen Lee, Harikrishnan Ramiah, Alexander Choo, Kishore Kumar Pakkirisami Churchill, Nai Shyan Lai, Chee Cheow Lim, Yong Chen, Pui-In Mak, Rui P. Martins
Publikováno v:
IEEE Access, Vol 11, Pp 11143-11164 (2023)
The increasing demand for wireless Internet of Things (IoT) calls for power efficient RF energy harvesting approach. The current dominant single-band RF energy harvesting front-end system restricts itself to a single frequency, which is at the risk o
Externí odkaz:
https://doaj.org/article/3276ed44fb784331825d48d49cbb7971
Publikováno v:
Electronics Letters, Vol 58, Iss 25, Pp 952-956 (2022)
Abstract This letter presents two transient enhancement techniques for multi‐path switched‐capacitor‐inductor (MP‐SCI) hybrid DC–DC converters to eliminate the line‐transient‐induced voltage coupling to the converter output. Since the e
Externí odkaz:
https://doaj.org/article/3493790e306b450286e5f18008f729c4
Publikováno v:
Electronics Letters, Vol 58, Iss 25, Pp 957-962 (2022)
Abstract This letter presents an automatic power‐stage implementation and optimization methodology for fully‐integrated reconfigurable switched‐capacitor (SC) DC‐DC converters with fine‐grained voltage conversion ratios (VCRs). The proposed
Externí odkaz:
https://doaj.org/article/c356b5d7eea8445da468e742b3e48784