The paper presents an improved equivalent circuit parameters extraction method for the dumbbell-shaped defected ground structure (DGS). The new extraction parameters equations are obtained in closed-form expressions, which contain S11 and S21. The DGS unit with center frequency of 5 GHz is designed and fabricated on a TLX substrate with thickness of 1 mm and dielectric constant of 2.55. The cir...

Molecular domestications of transposable elements have occurred repeatedly during the evolution of eukaryotes. Vertebrates, especially mammals, possess numerous single copy domesticated genes (DGs) that have originated from the intronless multicopy transposable elements. However, the origin and evolution of the retroelement-derived DGs (RDDGs) that originated from Metaviridae has been only part...

Division of Cardiology, Department of Medicine (DGS, JACL, JMM, GG, RGW, GFT, KCW), 12 Johns Hopkins Medical Institutions, Baltimore, MD Duke Clinical Research Institute (DGS, GSW), Durham, NC, 14 Department of Clinical Physiology (DGS, HA), Lund University Hospital, Sweden Memorial Hospital Research Center (RHS), Long Beach, CA 16 Cedars-Sinai Heart Institute (EM), Los Angeles, CA. 18 Address ...

This paper proposes a new type of double flower shaped DGS structure which when etched on the metallic ground plane of a simple microstrip line gives low-pass filter characteristics. This is due to the metamaterial behaviour of the DGS. The frequency characteristics of the DGS are investigated by simulating the structure in Mom based IE3D simulator. The effective parameters of the metamaterial ...

This paper presents an overview of solutions proposed in the literature for the overcurrent relay coordination problem in the presence of distributed generators (DGs). Furthermore, several protection issues are identified to study the requirements for protection in the presence of DGs, and possible innovative solutions for resolving the operational conflicts between distribution networks and DG...

Ditag genome scanning (DGS) uses next-generation DNA sequencing to sequence the ends of ditag fragments produced by restriction enzymes. These sequences are compared to known genome sequences to determine their structure. In order to use DGS for large-scale genome structural studies, we have substantially revised the original protocol by replacing the in vivo genomic DNA cloning with in vitro a...

An analysis and design of a novel planar antenna in corporation with fractal shaped defected ground structure (DGS) for emergency management has been presented in this paper. The conventional ground plane can be replaced by a Fractal DGS ground plane to get miniaturization and better resonating characteristics. Particle swarm optimization (PSO) has been used to identify the geometrical descript...

This paper presents a new structure to implement compact narrowband high-rejection microstrip band-stop filter (BSF). This structure is the combination of two traditional BSFs: Spurline filter and BSF using defected ground structure (DGS). Due to inherently compact characteristics of both Spurline and interdigital capacitance (used as DGS), the proposed filter shows a better rejection performan...