This paper presents an E-ring shaped printed monopole antenna for UWB applications with dual notched bands performance. In order to generate single frequency band notch function, we applied a U-ring shaped monopole antenna, and by inserting a rectangular ring in the centre of it an E-ring shaped radiating patch created and a dual band-notch function can be achieved. The measured bandwidth of th...

FNAL has been developing multiple versions of flexible quench antennas (flex-QA), including some specially optimized for high sensitivity and/or resolution, to characterize events and transients during current ramping in superconducting magnets. A fundamental feature our use these is the creation grid-like structures sensitive elements cover coil surfaces, with aim getting precise localization ...

fresnel zone plate antenna (fzpa) was considered as a recieving antenna. an expression of electric field on axis of antenna produced by an incidente plane wave was found . the expression was used for calculation of gain, efficiency and optimum phase correcting function. several fzpa are fabricated and tested. experimental and theoretical results were compared and it was shown that there was a g...

The cross-sectiondesign of $\cos (\theta)$ superconducting magnets is historically developed in a two-step process: initially, the coil geometry defined on basis magnetic optimizations; then, structure designed around coil. first step s...

Background Computer-based inline VF software can aid in the quantitative analysis of left ventricular (LV) function. Inline VF automatically locates the LV base and apex, detects endoand epicardial contours in each cardiac slice and phase, and performs a volumetric calculation to determine ejection fraction (EF), end-diastolic volume (EDV), end-systolic volume (ESV). The method presents an oppo...

This article studies the use of quality factor $Q$ as a tool to design multiport antenna structures with matching networks. Approximative formulas for computing -factor from port impedances antennas are presented. We show that achieva...