Zobrazeno 1 - 10
of 202
pro vyhledávání: '"Symeon Nikolaou"'
Publikováno v:
IEEE Access, Vol 12, Pp 16489-16497 (2024)
This paper presents a design for compact bandpass filters (BPFs) that feature high selectivity. This high selectivity is achieved through the use of open-/short-circuited coupled-line segments at the filter’s input and output and a pair of symmetri
Externí odkaz:
https://doaj.org/article/3252e9f50d6b4614a8b51812c8d5533c
Autor:
Ahsaan Gul Hassan, Muhammad Sumaid, Fahad Ahmed, Nosherwan Shoaib, Qammer H. Abbasi, Symeon Nikolaou
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-10 (2023)
Abstract In this paper, a single-layer reconfigurable reflective metasurface is presented. The proposed metasurface operates at 5.4 GHz and can achieve either absorption or cross-polarization conversion corresponding at two different diode biasing st
Externí odkaz:
https://doaj.org/article/ea523910bd1d4e41935406b12778f7bf
Autor:
Muhammad Nasir, Adnan Iftikhar, Muhammad Farhan Shafique, Birsen Saka, Symeon Nikolaou, Dimitris E. Anagnostou
Publikováno v:
IET Microwaves, Antennas & Propagation, Vol 17, Iss 7, Pp 505-517 (2023)
Abstract A novel wideband multilayer dual‐podal Vivaldi antenna with broadband characteristics from 5.5 to 20.82 GHz, is presented. Contrary to traditional Vivaldi antennas that are antipodal‐based, this design is realised by placing a pair of po
Externí odkaz:
https://doaj.org/article/bb100b2aa3414c8495b3e6af29d47382
Publikováno v:
Sensors, Vol 24, Iss 11, p 3465 (2024)
This manuscript presents the use of three novel technologies for the implementation of wireless green battery-less sensors that can be used in agriculture. The three technologies, namely, additive manufacturing, energy harvesting, and wireless power
Externí odkaz:
https://doaj.org/article/0b0ee75140fe4d5e8bb7bdb6ca9a5d39
Autor:
Tania Tamoor, Nosherwan Shoaib, Fahad Ahmed, Tayyab Hassan, Abdul Quddious, Symeon Nikolaou, Akram Alomainy, Muhammad Ali Imran, Qammer H. Abbasi
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
Abstract In this paper, a flexible bianisotropic metasurface possessing omega-type coupling is presented. The designed metasurface behaves differently when excited from either forward (port 1) or back (port 2) sides. It provides an absorption of 99.4
Externí odkaz:
https://doaj.org/article/622d1651a90047cca9d3dbac88910f61
Publikováno v:
IEEE Access, Vol 9, Pp 25233-25244 (2021)
This paper demonstrates a new technique for designing high performance reconfigurable bandpass-to-bandstop filters by employing a ring resonator and a selective feeding scheme integrated with single-pole double-throw switches (SPDT). The transformati
Externí odkaz:
https://doaj.org/article/ec6fc284ecab4f0b91393571e37f22b2
Autor:
Syed Muhammad Qasim Ali Shah, Nosherwan Shoaib, Fahad Ahmed, Akram Alomainy, Abdul Quddious, Symeon Nikolaou, Muhammad Ali Imran, Qammer H. Abbasi
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Abstract In this research article, a multiband circular polarization selective (CPS) metasurface is presented. A reciprocal bi-layered metasurface is designed by introducing the chirality in the structure. The top layer of the proposed metasurface is
Externí odkaz:
https://doaj.org/article/f7f9f6a1484b47c8b71aa30ce272e32a
Publikováno v:
IEEE Access, Vol 8, Pp 30675-30681 (2020)
A two-way tunable power divider for Simultaneous Wireless Information and Power Transfer (SWIPT) is proposed in this paper. The power divider divides the incoming power in such a way that maximum power is utilized for energy harvesting purposes and t
Externí odkaz:
https://doaj.org/article/4a8ee198f13041c1ae0d5a26f219a8fe
Publikováno v:
Sensors, Vol 22, Iss 17, p 6616 (2022)
The rapid growth of wireless spectrum access through cellular and IoT devices, for example, requires antennas with more capabilities such as being conformal and self-adapting beamforming. In this paper, the adaptive beamforming patterns of microstrip
Externí odkaz:
https://doaj.org/article/03561c662a5240408b9fa636e76cce4d
Publikováno v:
ETRI Journal, Vol 41, Iss 2, Pp 262-269 (2019)
This paper introduces a low‐cost, high‐performance mmWave antenna array module at 77 GHz. Conventional waveguide transitions have been replaced by 3D CPW‐microstrip transitions which are much simpler to realize. They are compatible with low‐c
Externí odkaz:
https://doaj.org/article/02db0cfe0cd34127bbe9c7b28fc0c4dd