Results 211 to 220 of about 2,867 (253)

A Compact Microstrip CP Antenna Using Slots and Defected Ground Structure (DGS)

2019 IEEE Indian Conference on Antennas and Propogation (InCAP), 2019
A Compact circularly polarized coaxially fed slotted microstrip patch with Defected Ground Structure (DGS) is proposed in this paper. DGS is introduced to increase the effective current path length and miniaturize the antenna. Microstrip patch size is reduced by 40% using the proposed DGS and slots.
Gaurav Kumar, Kashish Grover, Sanjeev Kulshrestha, Soumyabrata Chakrabarty, Milind B Mahajan   +4 more
openaire   +2 more sources

Compact Mems Based Reconfigurable Bandpass Microstrip Filter Using Defected Ground Structure (DGS)

Journal of Electromagnetic Waves and Applications, 2012
A new compact MEMS-based reconfigurable bandpass filter is presented. The proposed structure consists of symmetrically coupled DGS resonators, etched in the ground plane, with a microstrip excitation to obtain a bandpass filter response. The reconfigurability is achieved by short circuiting part of the slots etched in the ground plane using RF MEMS ...
S. Ur Rehman, A. F. A. Sheta, M. A. S. Alkanhal   +2 more
openaire   +2 more sources

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Comparison of defected ground structure (DGS) and defected microstrip structure (DGS) behavior at high frequencies

(ICEEE). 1st International Conference on Electrical and Electronics Engineering, 2004., 2005
A novel Defected Microstrip Structure is proposed, which behaves in a similar way than a conventional unit cell Defected Ground Structure (DGS) concerning band-stop response and selectivity. As a difference from the DGS, the DMS structure frequency response is almost the same when the microstrip length varies.
J.A. Tirado-Mendez, H. Jardon-Aguilar
openaire   +1 more source

Reconfigurable bandstop filter using Defected Ground Structure (DGS)

2013 Saudi International Electronics, Communications and Photonics Conference, 2013
The paper presents a new compact reconfigurable bandstop filter using Defected Ground Structure (DGS). The proposed reconfigurable bandstop filter is constructed by employing coupled DGS resonators etched in the ground plane. The bandstop filter consists of symmetrical DGS resonators with a microstrip excitation to obtain a bandstop filter response ...
Sajjad Ur Rehman, Abdel Fattah A. Sheta, Majeed A. S. Alkanhal, Rao Shahid Aziz   +3 more
openaire   +1 more source

Compact bandstop filter using defected ground structure (DGS)

2011 Saudi International Electronics, Communications and Photonics Conference (SIECPC), 2011
This paper presents a new structure to implement compact bandstop filters by employing coupled DGS resonators etched in the ground plane. The proposed bandstop filter consists of symmetrical DGS resonators with a microstrip excitation to obtain a bandstop filter response.
Sajjad Ur Rehman, Abdel Fattah Sheta, Majeed Alkanhal   +2 more
openaire   +1 more source

Compact multiband microstrip patch antenna using defected ground structure (DGS)

The 8th European Conference on Antennas and Propagation (EuCAP 2014), 2014
In this paper a novel design for miniaturization of patch antenna is presented. The proposed design for the miniaturized wide band patch antenna consists of hybrid techniques of H-shaped slot on the patch and defected ground structure. Defected ground structure is formed by cutting a combination of U and L-shaped slots.
S. Imran Hussain Shah, Shahid Bashir, Syed Dildar Hussain Shah   +2 more
openaire   +2 more sources

Tunable Low-Pass MEMS Filter Using Defected Ground Structures (DGS)

Advanced Materials Research, 2013
In this paper, fully monolithic tunable millimeter-wave filters using defected ground structures (DGS) are proposed using the CPW-based periodic structures with novel multiple-contact MEMS switches. Millimeter-wave low-pass filters were designed, fabricated, and tested.
X.L. Guo, C. Xu, G.A. Zhang, Z.J. Zhang, H.H. Yin, Z.L. Wang   +5 more
openaire   +1 more source

Investigation of novel tapered hybrid defected ground structure (DGS)

International Journal of RF and Microwave Computer-Aided Engineering, 2005
Novel defected ground structures (DGSs) have been investigated to achieve improved low-pass filter (LPF) properties. A chronological development in designs ranging from conventional square-patterned photonic-bandgap structure (PBGS) and conventional dumbbell-shaped DGS to proposed novel nonuniform DGS has been investigated theoretically and ...
Mohammad Nurunnabi Mollah, Nemai Chandra Karmakar, Jeffrey S. Fu   +2 more
openaire   +1 more source

Sierpinski gasket fractal antenna with defected ground structure (DGS)

2012 International Conference on ICT Convergence (ICTC), 2012
This paper presents the design and fabrication of Sierpinski gasket fractal antenna with defected ground structure (DGS) with center frequency at 5.8 GHz. A slot was used as a DGS. The antenna was designed and simulated using Computer Simulation Technology (CST) software and fabricated on FR-4 board with a substrate thickness of 1.6 mm and dielectric ...
Kamariah Ismail, Siti Hasyimah Ishak
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Stepped hairpin shape defected ground structure (SH-DGS) study

2007 Asia-Pacific Conference on Applied Electromagnetics, 2007
A new shape of defected ground structure (DGS) is introduced. The advantage over conventional dumb-bell shape DGS is, the physical dimensions and frequency response can be directly determined using its equivalent LC circuit. The equations can be extracted from Stepped Impedance Hairpin Resonator (SIHR) low pass filter study. They are similar in term of
S.H. Dahlan, S. Aizam, null Elfarizanis, A.H. Shipun   +3 more
openaire   +1 more source