Ultra wideband THz graphene four‐port circulators
Sign Up to like & getrecommendations! Published in 2019 at "Microwave and Optical Technology Letters"
DOI: 10.1002/mop.32035
Abstract: In the presence of a DC magnetic field, the conductivity of graphene acquires tensor character with antisymmetric nondiagonal elements. This property can be used for creation of nonreciprocal elements in THz region. In this work,… read more here.
Keywords: region; four port; port circulators; geometry ... See more keywords
Easily extendable four port MIMO antenna with improved isolation and wide bandwidth for THz applications
Sign Up to like & getrecommendations! Published in 2021 at "Optik"
DOI: 10.1016/j.ijleo.2021.167910
Abstract: ABSTRACT In this paper, a four port MIMO antenna with improved isolation and wide bandwidth is proposed for THz applications. Evolution of the antenna configuration is taking placed by the development of single circular monopole… read more here.
Keywords: mimo; thz; antenna; isolation ... See more keywords
Compact back-to-back DRA-based four-port MIMO antenna system with bi-directional diversity
Sign Up to like & getrecommendations! Published in 2018 at "Electronics Letters"
DOI: 10.1049/el.2018.0959
Abstract: This Letter presents a dielectric resonator (DR)-based multiple-input-multiple-output (MIMO) antenna with bi-directional pattern diversity. The back-to-back arrangement of cylindrical DR antennas DRAs (cDRAs) is one of the unique features of the proposed design. The cDRAs… read more here.
Keywords: antenna system; mimo antenna; mimo; port mimo ... See more keywords
Compact four port slot based MIMO antenna with isolation enhancement
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Electronics"
DOI: 10.1080/00207217.2021.1908625
Abstract: ABSTRACT This paper presents the design of a compact arc shape slot antenna and its application in multiple inputs and multiple-output (MIMO) communications. The unit cell antenna has a footprint of 15 × 15 mm2.… read more here.
Keywords: mimo antenna; mimo; isolation enhancement; four port ... See more keywords
Enhancing Diversity and Isolation Performance for a Four-Port MIMO Antenna in FR-1 5G Frequency Bands
Sign Up to like & getrecommendations! Published in 2024 at "IETE Journal of Research"
DOI: 10.1080/03772063.2024.2324025
Abstract: The paper aims to improve the diversity parameters and isolation of a four-port Multiple-Input Multiple Output (MIMO) antenna configured as 4 × 1 for the 5G-NR FR-1 N78/77/48 band. The 4-port MIMO design entails the incorporation of… read more here.
Keywords: four port; diversity; mimo antenna;
Three-port versus four-port technique for laparoscopic cholecystectomy: systematic review and meta-analysis
Sign Up to like & getrecommendations! Published in 2022 at "BJS Open"
DOI: 10.1093/bjsopen/zrac013
Abstract: Abstract Background The four-port laparoscopic technique is the standard approach for cholecystectomy. A three-port technique has been described, but there is no consensus over the outcomes and efficacy of this approach. The aim was to… read more here.
Keywords: port technique; three port; laparoscopic cholecystectomy; four port ... See more keywords
A Four-Port CSRR-Loaded Dual-Band MIMO Antenna with Suppressed Higher Order Modes
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3160831
Abstract: In this paper, we propose a compact four-port dual-band MIMO antenna with suppressed higher order modes (HOMs). First, complementary split ring resonator (CSRR) loading is used on a square microstrip antenna to achieve simultaneous miniaturization… read more here.
Keywords: band; antenna; dual band; four port ... See more keywords
All-Optical Diode Suppressing Broadband Backward Transmission Using Single- and Four-Port Photonic Crystal Cavities
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2018.2888632
Abstract: We present an all-optical diode suppressing broadband backward transmission using single-port and four-port photonic crystal (PC) cavities and its operation principle. We find that, by combining a four-port PC cavity and two power-dependent phase shifters… read more here.
Keywords: port; backward transmission; optical diode; four port ... See more keywords
A Novel All-Metal Four-Port Time-Domain Antenna With Enhanced Radiation Field
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Antennas and Wireless Propagation Letters"
DOI: 10.1109/lawp.2024.3434989
Abstract: This letter presents a novel four-port all-metal time-domain antenna. The conventional combined antenna is deformed by symmetrically arranging four radiating structures along the central axis of the antenna. Combined with a special excitation mode, the… read more here.
Keywords: antenna; port; four port; time domain ... See more keywords
Four-Port Folded Waveguide Slow Wave Structure for W-Band 1-kW Pulsed Traveling Wave Tube
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Electron Device Letters"
DOI: 10.1109/led.2024.3505606
Abstract: This letter presents the development of a W-band, 1-kW pulsed traveling wave tube (TWT) featuring a pencil beam focused by a periodic permanent magnet (PPM) system with the four-port structure, designed to reduce the inner… read more here.
Keywords: structure; four port; wave; band pulsed ... See more keywords
A Four-Port Ultra-Compact Terahertz Splitting Filter Based on Graphene Nanoribbon
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Photonics Technology Letters"
DOI: 10.1109/lpt.2018.2884048
Abstract: A four-port ultra-compact plasmonic splitting filter based on graphene diamond ring resonator is proposed and investigated by using the finite-difference time-domain method. Numerical simulation results show that the transmission spectra can be affected by the… read more here.
Keywords: filter based; port ultra; ultra compact; splitting filter ... See more keywords