Results 21 to 30 of about 821,647 (264)

Spectral and Dispersion Properties of Long Period Fiber Grating for Optical Communication Systems

open access: yesAdvanced Electromagnetics, 2018
Present work deals with the analytical study of spectral and dispersion properties of long period fiber grating (LPFG) under linear regime. The standard parameters in the understanding of the optical features of an LPFG have been analyzed using the ...
V. Jain, S. Pawar, S. Kumbhaj, P.K. Sen
doaj   +1 more source

A Compact CPW-Fed Ultra-Wideband Multi-Input-Multi-Output (MIMO) Antenna for Wireless Communication Networks

open access: yesIEEE Access, 2022
In this article, a compact coplanar waveguide (CPW) technique based ultra-wideband multiple-input-multiple-output (MIMO) antenna is proposed. The design is characterized by a broad impedance bandwidth starting from 3 GHz to 11 GHz.
Sarosh Ahmad   +6 more
doaj   +1 more source

Dispersion engineering of W2 steeple-house-defect waveguide photonic crystal

open access: yesResults in Physics, 2020
An epitome for dispersion and buffering in a photonic crystal was set forth. Slots in the form of a line of contacted steeple-houses are implanted in a two-line photonic crystal waveguide (2LPCW) to form an irregular slot of steeple-house defect PCW ...
Sayed Elshahat   +4 more
doaj   +1 more source

Substrate-Suspended Air Cavity Resonator and Its Application in Low Phase Noise Oscillator

open access: yesFrontiers in Physics, 2021
In this paper, we present a substrate-suspended air cavity resonator featuring high-Q, consisting of five separate layers for confining electromagnetic energy. Its field distribution is analyzed in depth.
Jun Xu   +6 more
doaj   +1 more source

A Koch Fractal Octagonal Antenna with a Compact Design and Defected Ground Structure (DGS) for Ultra-Wideband (UWB) Wireless Usage.

open access: yesJordanian Journal of Computers and Information Technology
This paper introduces a Koch fractal octagonal antenna designed for the Ultrawideband (UWB) Frequency range. The utilization of the Koch fractal in the antenna design contributes to size reduction as well as provides compactness in the antenna for UWB ...
TEJASWITA KUMARI   +2 more
doaj   +1 more source

Theoretical Analysis and Optimization Strategies of Wavefront Errors and Chromatic Aberrations Induced by Optical Coatings

open access: yesPhotonics
This research addresses the frequently overlooked wavefront errors and chromatic aberrations in optical coatings. It identifies intrinsic phase shifts within the coating system as the primary cause of these aberrations, rather than errors in surface form
Yang Gao   +4 more
doaj   +1 more source

Perancangan Quadband BPF dengan Komponen Lumpeduntuk Sistem m-BWA

open access: yesJurnal Elektronika dan Telekomunikasi, 2016
Ada banyak teknologi mobile broadband wireless access (m-BWA) yang saat ini digunakan, agar bisa mencakup seluruh teknologi m-BWA yang ada dalam sebuah perangkat maka diperlukan teknologi multiband .
Gunawan Wibisono   +2 more
doaj   +1 more source

High Security Chipless RFID Tags Using Frequency Shift Coding Technique [PDF]

open access: yesRadioengineering, 2017
A high security chipless RFID tag designed using E shaped resonator is presented in this paper. The tag identity is encoded using Frequency Shift Coding technique.
M. Sumi, A. Pradeep, B. Paul, S. Mridula
doaj  

Prevalence of 21 Physician‐Defined Severe Toxicities Following Childhood Acute Lymphoblastic Leukemia Treatment: Australian Retrospective Cohort Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Acute lymphoblastic leukemia (ALL) is the most common pediatric cancer, with an overall survival now surpassing 90% in developed countries. However, treatments are not without adverse effects. In this study, we apply the severe toxicity‐free survival (STFS) framework to determine the prevalence of 21 physician‐defined severe ...
Lane Collier   +10 more
wiley   +1 more source

A Compact Negative Group Delay Microstrip Diplexer with Low Losses for 5G Applications

open access: yesARO-The Scientific Journal of Koya University, 2023
Microstrip Diplexers play an important role in modern wireless communication systems. In this paper, a novel compact microstrip diplexer based on spiral cells is presented.
Leila Nouri   +4 more
doaj   +1 more source

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