Results 251 to 260 of about 3,437 (296)
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Dumbbell-shaped defected ground structure
International Journal of RF and Microwave Computer-Aided Engineering, 2007A simplified equivalent circuit model of a dumbbell-shaped defected ground structure (DGS) is developed. The equivalent circuit model is derived from the equivalent inductance and capacitance, which develop because of the perturbed return current path on the ground and the narrow gap, respectively.
Sushim Mukul Roy +2 more
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An interdigitated coupler with defect ground structure
2015 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), 2015In this paper, an interdigitated coupler with defect ground structure in the coupling position is presented. Compared to the conventional interdigitated coupler, the proposed coupler loosens restrictions of the coupling-line width and space between coupling lines. As a result, the requirement of fabricating accuracy for the new coupler is lowered.
Jing Zhang +3 more
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Silicon integrated defected ground structures
2010 Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), 2010In this paper we study the impact of two common defected ground structures fabricated in finite ground coplanar waveguide on silicon and alumina substrates useful for monolithic and hybrid designs. The single defects resonate at 30GHz and have bandwidth differences due to the nature and size of the defect. On-wafer measurements up to 40GHz are included
Daniel B. Schlieter +1 more
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Stepped-Impedance Defected Ground Structure
TENCON 2005 - 2005 IEEE Region 10 Conference, 2005The negative image of a microstrip stepped-impedance lowpass filter (LPF) or hi-Z, low-Z filter is used on the ground plane to produce wide and deep stopband. This structure is simpler in design and more compact in size compared to conventional bandstop structures.
Nemai Karmakar, Rita Li Ling
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Branch-Line Couplers Using Defected Ground Structure
IEICE Transactions on Communications, 2005In this letter, a novel design of a branch-line coupler with considerable reduction in its size and suppressed harmonic passband is proposed. By embedding a defected ground structure (DGS) unit cell under a microstrip line, compact branch-line couplers are easily achieved. The electrical length is scaled appropriately according to the slow-wave effect.
Y. J. Sung, C. S. Ahn, Y.-S. Kim
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Square shape MIMO antenna with defected ground structure
2018 4th International Conference on Recent Advances in Information Technology (RAIT), 2018MIMO antenna with compact size of 26 × 40 mm2 is proposed. Two square shaped planar monopoles are proposed with micro strip feed lines. To achieve better isolation defective ground structure (DGS) is introduced. The patch operating at a frequency range of 2.2 to 7.2 GHz which covers WLAN/ Wi-Max/ Wi-Fi applications.
Sachin S. Khade, S. L. Badjate
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Diamond-shaped microstrip patch antenna with defected ground structure
2017 25th Signal Processing and Communications Applications Conference (SIU), 2017In this study, a broadband microstrip diamond-shaped patch antenna is designed for broadband communication. The results are presented by simulating microstrip patch antenna at 3.675 GHz and 10.35 GHz frequencies. The antenna was simulated in the frequency range of 1–15 GHz. S11, the input reflection coefficient parameter has a value of −14.63 dB at the
Shaif, Ahmed Dherar Saleh Saif +4 more
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Defected and floating ground structures for vertical interconnects
2009 European Microwave Conference (EuMC), 2009Defected and floating ground structures for vertical interconnects are investigated up to the E-band. For quasi symmetrical microstrip-to-microstrip (MS-to-MS) transitions the effect of shape and size of ground plane cutouts is studied. In addition, floating ground pads are proposed to enhance the matching of asymmetrical microstrip-to-stripline (MS-to-
Stark, Alexander +2 more
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Design of H-shape Defected Ground Structure
2020 IEEE International RF and Microwave Conference (RFM), 2020This paper presents the design of an H-shape defected ground structure (DGS). Full EM-wave simulation of the design was carried out by using the Computer Simulation Technology (CST) software. The influence of some DGS design parameters on the resonant frequency was simulated and studied.
N. A. Razali +5 more
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Quasi-static modeling of defected ground structure
IEEE Transactions on Microwave Theory and Techniques, 2006A quasi-static equivalent-circuit model of a dumbbell-shaped defected ground structure is developed. The equivalent-circuit model is derived from the equivalent inductance and capacitance developed due to the perturbed return current path on the ground and the narrow gap, respectively. The theory is validated against the commercial full-wave solver CST
N.C. Karmakar, S.M. Roy, I. Balbin
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