Listar por autor "Limiti, Ernesto"
Mostrando ítems 21-40 de 41
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Metamaterial-inspired antenna array for application in microwave breast imaging systems for tumor detection
Alibakhshikenari, Mohammad; Virdee, Bal S.; Shukla, Panchamkumar; Ojaroudi Parchin, Naser; Azpilicueta Fernández de las Heras, Leyre ; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier ; Huynen, Isabelle; Denidni, Tayeb A.; Limiti, Ernesto (IEEE, 2020) Artículo / ArtikuluaThis paper presents a study of a planar antenna-array inspired by the metamaterial concept where the resonant elements have sub-wavelength dimensions for application in microwave medical imaging systems for detecting tumors ... -
Metasurface-based wideband MIMO antenna for 5G millimeter-wave systems
Sehrai, Daniyal Ali; Asif, Muhammad; Shah, Wahab Ali; Khan, Jalal; Ullah, Ibrar; Ibrar, Muhammad; Jan, Saeedullah; Alibakhshikenari, Mohammad; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (Institute of Electrical and Electronics Engineers Inc., 2021) Artículo / ArtikuluaThis paper presents a metasurface based multiple-input multiple-output (MIMO) antenna with a wideband operation for millimeter-wave 5G communication systems. The antenna system consists of four elements placed with a 90 ... -
Miniaturization trends in substrate integrated waveguide (SIW) filters: a review
Iqbal, Amjad; Tiang, Jun Jiat; Wong, Sew Kin; Alibakhshikenari, Mohammad; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (IEEE, 2020) Artículo / ArtikuluaThis review provides an overview of the technological advancements and miniaturization trends in Substrate Integrated Waveguide (SIW) filters. SIW is an emerging planar waveguide structure for the transmission of electromagnetic ... -
Multimode HMSIW-based bandpass filter with improved selectivity for fifth-generation (5G) RF front-ends
Iqbal, Amjad; Tiang, Jun Jiat; Wong, Sew Kin; Alibakhshikenari, Mohammad; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (MDPI, 2020) Artículo / ArtikuluaThis article presents the detailed theoretical, simulation, and experimental analysis of a half-mode substrate integrated waveguide (HMSIW)-based multimode wideband filter. A third-order, semicircular HMSIW filter is ... -
Mutual-coupling reduction in metamaterial substrate integrated waveguide slotted antenna arrays using metal fence isolators for SAR and MIMO applications
Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (IEEE, 2018) Contribución a congreso / Biltzarrerako ekarpenaA new type of mutual coupling reduction technique is applied to metamaterial substrate integrated waveguide (SIW) slotted antenna array. The circular shaped reference SIW antenna array is constructed from Alumina substrate ... -
New approach to suppress mutual coupling between longitudinal-slotted arrays based on SIW antenna loaded with metal-fences working on VHF/UHF frequency-bands: study, investigation, and principle
Alibakhshikenari, Mohammad; Virdee, Bal S.; Khalily, Mohsen; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (IEEE, 2019) Contribución a congreso / Biltzarrerako ekarpenaIn this work it is demonstrated that substrate integrated waveguide longitudinal slotted array antenna (SIWLSAA) which is loaded with metal fences exhibits high-isolation across VHF/UHF bands. A reference SIWLSAA used for ... -
A new study to suppress mutual-coupling between waveguide slot array antennas based on metasurface bulkhead for MIMO systems
Alibakhshikenari, Mohammad; Virdee, Bal S.; Khalily, Mohsen; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (IEEE, 2018) Contribución a congreso / Biltzarrerako ekarpenaIn this paper, a new method is proposed to reduce mutual coupling between waveguide slot array (WSA) antennas based on metasurface technology. This is achieved by placing a metasurface bulkhead between the two WSA antennas. ... -
A new waveguide slot array antenna with high isolation and high antenna bandwidth operation on Ku- and K- Bands for radar and MIMO systems
Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Limiti, Ernesto; Falcone Lanas, Francisco Javier (IEEE, 2018) Contribución a congreso / Biltzarrerako ekarpenaIn this paper a novel technique is proposed to reduce the mutual coupling between the radiating elements of a waveguide slot array antenna. This is achieved by inserting slots between the waveguide oval shaped slots. The ... -
A novel 0.3-0.31 THz GaAs-based transceiver with on-chip slotted metamaterial antenna based on SIW technology
Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (IEEE, 2020) Contribución a congreso / Biltzarrerako ekarpenaThis paper presents a novel on-chip antenna with fully integrated 0.3-0.31 THz transceiver is implemented on 0.5μm GaAs substrate, and comprises a voltage-controlled oscillator (VCO), a buffer amplifier, a modulator stage, ... -
Novel concentric hexagonal-shaped RFID tag antenna with T-shaped stub matching
Alibakhshikenari, Mohammad; Virdee, Bal S.; Althuwayb, Ayman Abdulhadi; Xu, Kai-Da; See, Chan H.; Khan, Salahuddin; Park, Ikmo; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (IEEE, 2021) Artículo / ArtikuluaThis paper presents a unique concentric hexagonal-shaped ring antenna for radio frequency identification (RFID) tags. The rings are excited with a common microstrip feedline. The radiation characteristics of the antenna ... -
Optical-microwave sensor for real-time measurement of water contamination in oil derivatives
Abdulsattar, Rusul K.; Alibakhshikenari, Mohammad; Virdee, Bal S.; Sharma, Richa; Elwi, Taha A.; Kouhalvandi, Lida; Hassain, Zaid Abdul; Ali, Syed Mansoor; Türker Tokan, Nurhan; Livreri, Patrizia; Falcone Lanas, Francisco ; Limiti, Ernesto (Elsevier, 2023) Artículo / ArtikuluaThis paper presents a novel microwave sensor using optical activation for measuring in real-time the water contamination in crude oil or its derivatives. The sensor is constructed from an end-coupled microstrip resonator that ... -
Optimum power transfer in RF front end systems using adaptive impedance matching technique
Alibakhshikenari, Mohammad; Virdee, Bal S.; Azpilicueta Fernández de las Heras, Leyre ; See, Chan H.; Abd-Alhameed, Raed; Althuwayb, Ayman Abdulhadi; Falcone Lanas, Francisco Javier ; Huynen, Isabelle; Denidni, Tayeb A.; Limiti, Ernesto (Nature Research, 2021) Artículo / ArtikuluaMatching the antenna’s impedance to the RF-front-end of a wireless communications system is challenging as the impedance varies with its surround environment. Autonomously matching the antenna to the RF-front-end is therefore ... -
Overcome the limitations of performance parameters of on-chip antennas based on metasurface and coupled feeding approaches for applications in system-on-chip for THz integrated-circuits
Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (IEEE, 2020) Contribución a congreso / Biltzarrerako ekarpenaThis paper proposes a new solution to improve the performance parameters of on-chip antenna designs on standard CMOS silicon (Si.) technology. The proposed method is based on applying the metasurface technique and exciting ... -
Photonic controlled metasurface for intelligent antenna beam steering applications including 6G mobile communication systems
Muqdad, Zainab S.; Alibakhshikenari, Mohammad; Elwi, Taha A.; Hassain, Zaid Abdul; Virdee, Bal S.; Sharma, Richa; Khan, Salahuddin; Türker Tokan, Nurhan; Livreri, Patrizia; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (Elsevier, 2023) Artículo / ArtikuluaThis paper presents a novel metasurface antenna whose radiation characteristics can be remotely controlled by optical means using PIN photodiodes. The proposed reconfigurable antenna is implemented using a single radiating ... -
Precoded large scale multi-user-MIMO system using likelihood ascent search for signal detection
Bagadi, Kalapraveen; Ravikumar, Chinthaginjala V.; Alibakhshikenari, Mohammad; Challa, Naga Raju; Rajesh, Anbazhagan; Aïssa, Sonia; Dayoub, Iyad; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (Wiley, 2022) Artículo / ArtikuluaMultiple antennas at each user equipment (UE) and/or thousands of antennas at the base station (BS) comprise the extremely spectrum efficient large scale multi-user multiple input multiple output system (BS). Due to space ... -
Silicon-based 0.450-0.475 THz series-fed double dielectric resonator on-chip antenna array based on metamaterial properties for integrated-circuits
Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (IEEE, 2019) Contribución a congreso / Biltzarrerako ekarpenaThe antenna array designed to operate over 0.450-0.475 Terahertz comprises two dielectric resonators (DRs) that are stacked vertically on top of each other and placed on the surface of the slot antenna fabricated on a ... -
Study on antenna mutual coupling suppression using integrated metasurface isolator for SAR and MIMO applications
Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier ; Andujar, A.; Anguera, J.; Limiti, Ernesto (IEEE, 2018) Contribución a congreso / Biltzarrerako ekarpenaA metasurface based decoupling structure that is composed of a square-wave slot pattern with exaggerated corners that is implemented on a rectangular microstrip provides high-isolation between adjacent patch antennas for ... -
Study on isolation improvement between closely-packed patch antenna arrays based on fractal metamaterial electromagnetic bandgap structures
Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Ali, Abdul; Hussein Ali, Ammar; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (Institution of Engineering and Technology, 2018) Artículo / ArtikuluaA decoupling metamaterial (MTM) configuration based on fractal electromagnetic-bandgap (EMBG) structure is shown to significantly enhance isolation between transmitting and receiving antenna elements in a closely-packed ... -
Study on on-chip antenna design based on metamaterial-inspired and substrate-integrated waveguide properties for millimetre-wave and THz integrated-circuit applications
Alibakhshikenari, Mohammad; Virdee, Bal S.; Althuwayb, Ayman Abdulhadi; Aïssa, Sonia; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (Springer, 2021) Artículo / ArtikuluaThis paper presents the results of a study on improving the performance parameters such as the impedance bandwidth, radiation gain and efficiency, as well as suppressing substrate loss of an innovative antenna for on-chip ... -
Super-wide impedance bandwidth planar antenna for microwave and millimeter-wave applications
Alibakhshikenari, Mohammad; Virdee, Bal S.; See, Chan H.; Abd-Alhameed, Raed; Falcone Lanas, Francisco Javier ; Limiti, Ernesto (MDPI, 2019) Artículo / ArtikuluaA feasibility study of a novel configuration for a super-wide impedance planar antenna is presented based on a 2 × 2 microstrip patch antenna (MPA) using CST Microwave Studio. The antenna comprises a symmetrical arrangement ...