Results 21 to 30 of about 1,659 (296)
International Journal of Antennas and Propagation, 2020 Suppressing higher-order modes up to sixth harmonics of the fundamental working frequency in a single-layer microstrip line-fed patch antenna has been successfully demonstrated. Higher-order modes of the antenna are suppressed by simultaneously employing
Jun Fan +4 more
doaj +1 more source
A Defected Ground Structure Based on Matryoshka Geometry
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2022 Abstract A Defected Ground Structure, DGS, based on matryoshka geometry is described in this paper. The proposed DGS geometry is outlined and initial design equations are presented. Four prototypes, with resonant frequencies 2.17 GHz, 2.44 GHz, 2.99 GHz and 3.73 GHz, were designed, fabricated and characterized, observing a good agreement between ...
Alfredo Gomes Neto +5 more
openaire +4 more sources
Tri-Band Slot-Loaded Microstrip Antenna for Internet of Things Applications
Advanced Electromagnetics, 2021 A new design of a multiband microstrip patch antenna using slots in the patch as well as defected ground structures (DGS) implemented in the ground plane is proposed.
S. Mohamed Refaat +2 more
doaj +1 more source
Advanced Electromagnetics, 2021 In this study the effects of using defected ground structures (DGS) composed of a complementary split ring resonator (CSRR) and CSRR with dumbbell (CSRR-D) for rectangular microstrip antennas are investigated.
E. M. Kucukoner +3 more
doaj +1 more source
Micromachines, 2023 This paper proposed a right-handed circularly polarized (RHCP) micro-strip antenna for multi-navigation system applications. The size of the antenna is 70 mm × 70 mm × 2 mm, which is fabricated on an FR4 substrate. A meandering technique on a patch layer
Zhenyang Ma, Xinyi Huang
doaj +1 more source
TCM Analysis of Defected Ground Structures for MIMO Antenna Designs in Mobile Terminals
IEEE Access, 2017 In this paper, the theory of characteristic modes (TCMs) is used for the first time to analyze the behavior of defected ground structures (DGS), when added to antenna designs.
Asim Ghalib, Mohammad S. Sharawi
doaj +1 more source
A Reconfigurable Filter Using Defected Ground Structure for Wideband Common-Mode Suppression
IEEE Access, 2019 A wideband common-mode (CM) suppression reconfigurable filter is proposed for high-speed all-pass differential circuits. The filter adopts three varactor-loaded compact defected ground structures (DGSs) to achieve continuous reconfigurability in its ...
Zhibin Zeng +2 more
doaj +1 more source
Wideband Quarter Wave Transformer Based on Defected Ground and Split Ring Resonator Structures
, 2018 This article examines a wideband impedance transformer based on a split ring resonator and defected ground structures. The transformer was designed as a 4 section binomial one and it provides a transformation from 50 SI to 100 Omega.
Yahya Yuksek +3 more
core +1 more source
Configurable Defected Ground Structures for Low Profile Antenna Performance Enhancement
, 2020 Versatile configurable defected ground structures(CDGSs) for enhancing the performance of low profile antennas are introduced. It is shown that CDGS can significantly reduce mutual coupling (MC) between multiple antennas and suppress cross-polarization ...
Zixiang Han (8631217) +4 more
core +1 more source
A compact ultra wideband bandpass filter using arrow coupled lines with defected ground structure
Journal of Electrical Systems and Information Technology, 2014 A new ultra wideband bandpass filter (UWB-BPF) using arrow coupled lines and U-slot defected ground structures (U-DGS) is proposed. The input and output feeding lines are connected to the coupled lines placed on the conductor side of the substrate while ...
Deena A. Salem +2 more
doaj +1 more source