Zobrazeno 1 - 10
of 31
pro vyhledávání: '"William G. Whittow"'
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 4, Pp 913-921 (2024)
This article presents an efficient and effective design approach of the phase distribution calculation across metasurface for significant radar cross section (RCS) reduction of a circular polarization (CP) and liner polarization (LP) radar waves. The
Externí odkaz:
https://doaj.org/article/51425595baed4e3e9f8c1b640afb5037
Autor:
Foez Ahmed, Touseef Hayat, Muhammad U. Afzal, Shiyu Zhang, Karu P. Esselle, William G. Whittow
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 4, Pp 506-519 (2023)
This article presents highly radio-frequency (RF) transparent phase gradient synthetic metasurfaces made of sub-wavelength-sized 3D printable meta-atoms with tailored permittivity that cannot be achieved with off-the-shelf, commercially available mat
Externí odkaz:
https://doaj.org/article/9df042c6a9704b9aa3f0444b68ecd677
Autor:
Nasser Montaseri, Zeynab Khodkar, Jamshid Abouei, William G. Whittow, Konstantinos N. Plataniotis
Publikováno v:
IEEE Access, Vol 11, Pp 46719-46733 (2023)
Continuous health monitoring of vital signs of patients is a challenging issue, especially in emergency medical conditions. This paper designs a practical internet of medical things-based wireless body area network (IoMT-based WBAN), to address this
Externí odkaz:
https://doaj.org/article/cd8def392e304a3b920b739c6ca82091
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 4, Pp 196-206 (2023)
A novel methodology is introduced for designing bespoke homogeneous and graded index lenses for enhancing the gain of travelling wave antenna arrays (TWAs). 3D-printed lenses in the literature are majorly explored with standing wave antennas (SWAs) s
Externí odkaz:
https://doaj.org/article/5bf5161473ac4a5ba65882a8b2f52ef0
Publikováno v:
Electronics Letters, Vol 59, Iss 13, Pp n/a-n/a (2023)
Abstract The paper presents a new practical design for a 4 × 1 planar switched array of dielectric filled waveguide antennas loaded with bow‐tie shaped slots operating at 26.5 to 29.5 GHz for 5G millimetre‐wave applications. The design is realiz
Externí odkaz:
https://doaj.org/article/6bac7f38fae34887b3f8a350a907e689
Publikováno v:
IEEE Access, Vol 10, Pp 66267-66272 (2022)
This article presents the design of 1-bit metasurfaces for radar cross section (RCS) reduction over wide frequency band from 60 GHz to 120 GHz. The proposed 1-bit metasurfaces can be designed without the need for any complicated optimization algorith
Externí odkaz:
https://doaj.org/article/ce7488d7b71e43afab0c1bd7df578b08
Autor:
Asimina Kiourti, Amin M. Abbosh, Maria Athanasiou, Toni Bjorninen, Aline Eid, Cynthia Furse, Koichi Ito, Gianluca Lazzi, Mohamed Manoufali, Matteo Pastorino, Manos M. Tentzeris, Katrina Tisdale, Erdem Topsakal, Leena Ukkonen, William G. Whittow, Huanan Zhang, Konstantina S. Nikita
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 3, Pp 363-390 (2022)
Rapid advances in antennas, propagation, electromagnetics, and materials are opening new and unexplored opportunities in body area sensing and stimulation. Next-generation wearables and implants are seamlessly providing round-the-clock monitoring. In
Externí odkaz:
https://doaj.org/article/97577f91a45c43d5878ad3b9e38d0bf7
Autor:
Chih-Kuo Lee, Shiyu Zhang, Syed Sheheryar Bukhari, Darren Cadman, J. C. Vardaxoglou, William G. Whittow
Publikováno v:
IEEE Access, Vol 8, Pp 7628-7640 (2020)
This paper describes a novel method of characterizing complex permittivity using a complementary frequency selective surface (CFSS). The CFSS provides a passband behavior and the change in the passband when a material under test (MUT) is placed adjac
Externí odkaz:
https://doaj.org/article/0b76e0c8c1b6478e82373ac003b852a8
Publikováno v:
AIP Advances, Vol 12, Iss 2, Pp 025103-025103-5 (2022)
The design of photonic devices is usually done through analytical modeling or variation in geometry and material parameters to obtain the required functionalities. Here, we report the use of topology optimization to obtain a bi-focal lens that concen
Externí odkaz:
https://doaj.org/article/7d5296365ffb44f893a8f6b515cce9f1
Publikováno v:
The Journal of Engineering (2015)
Flexible heterogeneous substrates have been constructed, using three-dimensional printing in a single process, by introducing air-filled slots. These substrates have been used to substantially reduce the substrate losses for a flexible microstrip pat
Externí odkaz:
https://doaj.org/article/d39cc31b91fa476098f379566fc257b4