Zobrazeno 1 - 10
of 262
pro vyhledávání: '"Chulhun Seo"'
Publikováno v:
IEEE Access, Vol 12, Pp 18714-18723 (2024)
In this paper, a novel and compact structure is presented for designing a rectifier with broad operating bandwidth and high efficiency for energy harvesting and wireless power transfer based on shunt-diode configuration. Specifically, different from
Externí odkaz:
https://doaj.org/article/4cac5f93b13f437b91aaddfb517a08b7
Publikováno v:
IEEE Access, Vol 11, Pp 143907-143912 (2023)
In this paper, a novel design of dual-band (DB) inverse Doherty rectifier is presented. Specifically, the proposed structure consists of two Schottky diodes, a DB quarter-wave impedance inverter (DBII) for tolerance of input power and dc load fluctua
Externí odkaz:
https://doaj.org/article/2680c20d191e49999e4217f28dbf2b31
Publikováno v:
IEEE Access, Vol 11, Pp 125011-125020 (2023)
This paper presents a novel methodology for designing a rectifier with high efficiency and wide dynamic range (DR). Specifically, the proposed structure employs a combination of two diodes which are optimized for operation at distinct power levels. T
Externí odkaz:
https://doaj.org/article/a25ee0c9a3514940bb1db1aaa2cb62a7
Publikováno v:
IEEE Access, Vol 11, Pp 126643-126649 (2023)
This paper presents a novel methodology to enhance power conversion efficiency (PCE) and extend dynamic range for class-F shunt-diode rectifier design based on increasing the number of diodes connected in parallel. The prototypes employ class-F harmo
Externí odkaz:
https://doaj.org/article/8e8283bb2c164e20bc414edba96f0239
Publikováno v:
IEEE Access, Vol 11, Pp 76989-76995 (2023)
In this study, we present a simple feed-aperture coupled antenna with a high gain and flat-top radiation pattern for microwave power transmission (MPT) applications involving misalignment. A $4\times4$ mushroom structure is proposed to suppress the b
Externí odkaz:
https://doaj.org/article/cdf05724c5144e75ad91dc1db9a238df
Publikováno v:
IEEE Access, Vol 11, Pp 63997-64004 (2023)
This paper presents a compact broadband circularly polarized (CP) implantable antenna at the Medical Device Radio communications Service (MedRadio) band (401-406 MHz). The proposed antenna is designed by utilizing the ladder structure slots along wit
Externí odkaz:
https://doaj.org/article/f1f2a9488178484da4b179c90786a770
Autor:
Tung-Lam Vu, Chulhun Seo
Publikováno v:
IEEE Access, Vol 11, Pp 30188-30196 (2023)
This paper presents a planar metasurface structure for linear to circular polarization (CP) conversion at the industrial, scientific, and medical bands of 2.4 GHz and 5.8 GHz. The new unit-cell structure consists of two loaded symmetric cross-shaped
Externí odkaz:
https://doaj.org/article/2656f2f4ed4a404b8f0090681f108309
Autor:
Hoang Le-Huu, Chulhun Seo
Publikováno v:
IEEE Access, Vol 11, Pp 26375-26382 (2023)
This paper presents an anti-symmetric wing transmitter (ASW-Tx) for angular misalignment insensitive WPT to biomedical implants. Symmetrical field distribution on two orthogonal planes of $Oxz$ and $Oyz$ are analyzed theoretically to obtain stable po
Externí odkaz:
https://doaj.org/article/1ce4ca5be4ae48099ab6ecaaaf5f45a4
Autor:
Ducdung Nguyen, Chulhun Seo
Publikováno v:
IEEE Access, Vol 11, Pp 16466-16473 (2023)
In this paper, a new approach is presented for achieving circular polarization (CP) characteristics and gain enhancement of an ultra-miniaturized antenna for biomedical applications. The proposed antenna operates in the frequency of the industrial, s
Externí odkaz:
https://doaj.org/article/de43d649a4e54628b175c6e54b2225ee
Autor:
Lam Vu Tung, Chulhun Seo
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 22, Iss 4, Pp 440-446 (2022)
A miniaturized, triple-band, implantable antenna for biomedical applications is presented in this paper. The proposed antenna with dimensions of 8.1 mm × 8.1 mm × 0.64 mm, combined with a shorting pin and a ground slot, operates at bands between 40
Externí odkaz:
https://doaj.org/article/cff39fbafd014bbda516fefdd8157b95