Results 41 to 50 of about 2,796 (227)
Bandwidth Optimization of a Textile PIFA with DGS Using Characteristic Mode Analysis
Sensors, 2021 This work presents the design and optimization of an antenna with defected ground structure (DGS) using characteristic mode analysis (CMA) to enhance bandwidth.
Bashar Bahaa Qas Elias +4 more
doaj +1 more source
Design Of Rectangular With 3 Slot Microstrip Antenna For Application Lte 2.1 Ghz [PDF]
, 2018 A rapid development of telecommunications technology, and over time, the existing network technologies continue to be developed. To create the latest technology called Long Term Evolution (LTE).
Pohan, I. A. (Irfan) +1 more
core +2 more sources
A NOVEL COUPLED LINE COUPLER WITH DEFECTIVE GROUND STRUCTURE (DGS)
INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT, 2022 This paper examines the development of a 10 dB directionally coupled line coupler with defective ground structure (DGS) using HFSS design tool. The coupler operates in the 4 GHz to 6 GHz frequency range with a high directivity of 46 dB. compared to conventional coupled line coupler and S parameters are calculated.
openaire +1 more source
Advanced Materials Interfaces, EarlyView.Zero‐dimensional carbon nanomaterials are presented as multifunctional platforms linking structure, property, and sensing performance. Surface engineering and heteroatom doping modulate electron‐transfer and luminescent behavior, enabling electrochemical, photoluminescent, and electrochemiluminescent detection. Fundamental design principles, analytical
Gustavo Martins +8 more
wiley +1 more source
Reconfigurable phased microstrip antenna array with defected ground structure and defected microstrip structure for beam steering application [PDF]
, 2018 Beam steering is defined as the ability to electronically steer the beam maximum of an antenna electric field pattern to some predefined point in space. The performance of a phased antenna array for beam steering without moving the antennas is important ...
Subhi Ahmad, Khalid
core
A Wide Multiband T-Slotted, Semicircular Microstrip Patch Antenna for WLAN/WiMAX Applications [PDF]
, 2017 A multifrequency semicircularmicrostrip antenna is designed and simulated in this paper using HFSS simulation software. The proposed antenna consists of two quarter rings in different radius with one as perfect ground and other as defect ground structure,
Iqtedar, M. (Madiha) +1 more
core +1 more source
Slow‐wave CPW resonator with defected ground structure (DGS) for filter applications
Microwave and Optical Technology Letters, 2005 AbstractNovel slow‐wave CPW resonators with defected ground structures (DGSs) in a rectangularly spaced and open‐loop shapes are investigated. These structures have an extremely compact size. The simulations and experimental results verify that these structures provide a size reduction of about 54% as compared to a conventional CPW resonator.
Akgün, Özlem, Görür, Adnan
openaire +3 more sources
Topological Point Defects in SmC* Liquid Crystals Under Mechanical Disturbance
Advanced Materials Interfaces, EarlyView.Tangetial air jet shear inducess island formation and nucleates topological point defects in uniform SmC films. Island bounded by edge dislocation loops shrink and transform into isolated point defects under continued shear. Mechanical perturbatio provides a controllable route for defect engineering in smectric liquid crystal thin films.
Gunganist Kongklad +3 more
wiley +1 more source
Investigation of Compact Low Pass Filter with Sharp Cut–Off using Metamaterial [PDF]
, 2013 In this paper a new compact microstrip Bessel low pass filter (LPF) is experimentally validated using complementary split ring resonator (CSRR) which has sharper cut-off and improved spurious band suppression characteristics. The Richard’s transformation
Annaram, K., Nithya, S.
core +1 more source
A BioLiving Periosteum Evokes Centripetal Regeneration in Challenging Bone Defects
Advanced Science, EarlyView.Large bone defects often suffer from insufficient central healing. This study engineers a BioLiving periosteum that mimics the native structure. It sequentially delivers remote chemical cues and contact physical cues in a signaling‐relay manner, effectively recruiting and guiding endogenous cells toward the defect center.
Yang Shi +12 more
wiley +1 more source