Results 1 to 10 of about 14,455 (197)

Tunable Filters Using Defected Ground Structures at Millimeter-Wave Frequencies [PDF]

open access: yesMicromachines
This paper explores the potential of phase change materials (PCM) for dynamically tuning the frequency response of a dumbbell u-slot defected ground structure (DGS)-based band stop filter.
Kaushik Annam   +3 more
doaj   +2 more sources

The Causal Nexus Between Different Feed Networks and Defected Ground Structures in Multi-Port MIMO Antennas [PDF]

open access: yesSensors
Multiple input multiple output (MIMO) antennas have recently received attention for improving wireless communication data rates in rich scattering environments.
Merve Tascioglu Yalcinkaya   +3 more
doaj   +2 more sources

Bandwidth Enhancement for Half Mode Substrate Integrated Wave guide Antenna using Defected Ground Structures [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2023
The SIW antenna suffers from the narrow bandwidth for a single cavity and single resonant. Defected ground structure (DGS) with a dual cavity was the solution to solve narrow bandwidth by resulting in hybrid resonance.
Dian Widi Astuti   +6 more
doaj   +1 more source

Compact and Wide Stopband Lowpass Filter Using Open Complementary Split Ring Resonator and Defected Ground Structure [PDF]

open access: yes, 2015
A compact (0.16 λg x 0.08 λg) and wide stop¬band lowpass filter design using open complementary split ring resonator (OCSRR) and defected ground structure (DGS) is presented in this paper.
Karthikeyan, S. S., Kshetrimayum, R. S.
core   +6 more sources

Compact Near Field Wireless Energy Transfer Systems Using Defected Ground Structures

open access: yesIEEE Journal of Microwaves, 2023
Near-Field Wireless Power Transfer systems have attracted attention for their potential applications, such as implanted medical devices, radio frequency identification, and portable electronic devices in general.
Filipe Ferreira   +4 more
doaj   +1 more source

A Low Mutual Coupling Circle Microstrip Array Antenna for 5.8 GHz Band [PDF]

open access: yesHangkong bingqi, 2022
In order to effectively suppress the influence of mutual coupling between array elements on antenna radiation performance, a novel dual-circle microstrip patch array antenna with low mutual coupling and low correlation is proposed.
Si Qingqing, Zeng Qingsheng, Shi Yuan, Zhang Yandong
doaj   +1 more source

Identifying the ground state structures of point defects in solids

open access: yesnpj Computational Materials, 2023
AbstractPoint defects are a universal feature of crystals. Their identification is addressed by combining experimental measurements with theoretical models. The standard modelling approach is, however, prone to missing the ground state atomic configurations associated with energy-lowering reconstructions from the idealised crystallographic environment.
Irea Mosquera-Lois   +3 more
openaire   +4 more sources

Polarization Enhancement of Microstrip Antennas by Asymmetric and Symmetric Grid Defected Ground Structures

open access: yesIEEE Open Journal of Antennas and Propagation, 2020
A new approach to controlling cross-polarization (XP), for either suppressing XP or exciting circular polarization (CP), in single-fed microstrip antennas using novel grid defected ground structures (GDGSs) is proposed.
Yujie Zhang   +4 more
doaj   +1 more source

Combined DMS and DGS Techniques for Compact and Low Cutoff Frequency LPF Design [PDF]

open access: yesJournal of Engineering Research - Egypt, 2018
high performance and compact size low pass filters with narrow stopband and sharp cutoff characteristics are highly required in numerous wireless communication systems for noise and interference suppression.
Sara Meeper, Amr Hussein, Mahmoud Attia
doaj   +1 more source

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