This paper presents a multiple-input multiple-output (MIMO) antenna system for millimeter-wave 5G wireless communication services. The proposed MIMO configuration is composed of four elements, where each possesses an HP-shaped that features simple and excellent performance. design can operate at very wideband 36.83–40.0 GHz (measured). Furthermore, the attains peak gain 6.5 dB with maximum elem...

A holographic optical element (HOE) is a kind of diffractive optical element. It can replace an optical system with multiple optical components such as lenses, mirrors, beamsplitters, and prisms. Thus, it is expected to be possible improve performance and reduce the number of optical parts of various optical systems, such as optical storage systems 1) like compact disk or digital versatile disk...

Stein’s method is used to study the trace of a random element from a compact Lie group or symmetric space. Central limit theorems are proved using very little information: character values on a single element and the decomposition of the square of the trace into irreducible components. This is illustrated for Lie groups of classical type and Dyson’s circular ensembles. The approach in this pape...

this paper presents a low-cost compact planar microstrip-fed monopole antenna and its four-element array design for ultra-wideband (uwb) wireless communication and target detection applications, respectively, operating in the frequency span of 3 ghz to 11 ghz. a prototype was fabricated and then measured based on optimal parameters. the results of reflection coefficient (s11) and radiation patt...