Results 11 to 20 of about 5,171 (195)

Compact Size UWB Monopole Antenna with Triple Band-Notches [PDF]

open access: yesRadioengineering, 2017
This paper presents triple band notched ultra wide band (UWB) monopole antenna with overall size of 36 × 32 mm2 fed by microstrip transmission line. In order to achieve a good impedance matching from 2.7 GHz to 13.4 GHz, a tapered transition between the ...
W. Ali, A. A. Ibrahim, J. Machac
doaj   +2 more sources

Circularly Polarized Split Ring Resonator Loaded Slot Antenna

open access: yesAdvanced Electromagnetics, 2018
A compact circularly polarized printed slot antenna operating at 2.45 GHz is reported. The antenna consists of a pair of rotated square split ring resonators (SRR) inside a rectangular slot etched on the ground plane of an FR-4 dielectric substrate.
A. R. Parvathy   +2 more
doaj   +1 more source

Adaptive opto-electromechanical silicon-on-insulator increased bandwidth accelerometer

open access: yesSN Applied Sciences, 2022
This paper studies the construction of a compact one-dimension-sensing iscreased bandwidth photonic accelerometer using cascaded groups of continued sections of a 50 ng seismic mass each attached to the silicon beams of two under etched slot waveguide ...
Ali Abdulsattar Hussein
doaj   +1 more source

Experimental Study of Adaptive Control of High-Speed Flow-Induced Cavity Oscillations

open access: yesJournal of Fluid Science and Technology, 2011
This paper describes progress towards the development of an active suppression system for open cavity oscillations. A leading-edge array of piezoelectric zero-net mass-flux (ZNMF) actuators is used to suppress cavity flow oscillations determined from ...
Hidemi TAKAHASHI   +6 more
doaj   +1 more source

Sub-6GHz 4G/5G Conformal Glasses Antennas

open access: yesIEEE Access, 2019
The difficulty of antenna design applied to glasses is that the structure of glasses is too single, and the space available for antenna design is greatly limited. In this background, the integrated design of 4G antennas and 5G antennas applied to glasses
Yan-Yan Wang, Yong-Ling Ban, Yanhui Liu
doaj   +1 more source

Hexagonal open loop resonators employing frequency shift coding for Chipless RFID tag applications [PDF]

open access: yesInternational Journal of Electronics and Telecommunications
A novel, high surface encoding capacity compact planar multiresonator tailored for Chipless RFID tag applications is discussed in this article. The tag consists of three hexagonal open loop resonators that are etched on the ground plane of a 50Ω ...
Harikrishnan A I, Mary Neebha, Sumi M
doaj   +1 more source

Simple Memristive SPICE Macro-Models and Reconfigurability in Filter and Antenna [PDF]

open access: yesRadioengineering, 2016
Simple current- and voltage-controlled memristive circuit macro-models using SPICE are proposed to capture the nonlinear hysteresis loop behaviors in this paper.
K.D. Xu, X.S. Li, Y.J. Guo, Q.H. Liu
doaj  

Mechanical tuning of substrate integrated waveguide resonators

open access: yes, 2012
This letter presents a novel approach for providing substrate-integrated waveguide tunable resonators by means of placing an additional metalized via-hole on the waveguide cavity. The via-hole contains an open-loop slot on the top metallic wall.
Collado Gómez, Juan Carlos   +3 more
core   +1 more source

Tunable slotted ground structured bandstop filter with BST varactors

open access: yes, 2009
This paper presents an investigation of a tunable bandstop filter (BSF) using slotted ground structure. A kind of open loop slot resonator is used for the bandstop response and its characteristics according to various dimensions are considered to decide ...
Bao, P.   +9 more
core   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

open access: yesAdvanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

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