Localized radiative energy transfer from a near-field emitter to a magnetic thin film structure is investigated. A magnetic thin film stack is placed in the near-field of the plasmonic nanoantenna to utilize the evanescent mode coupling between the nanoantenna and magnetic thin film stack. A bow-tie nano-optical antenna is excited with a tightly focused beam of light to improve near-field radia...

This work reports a rigorous and comprehensive three-dimensional electromagnetic computation to investigate and design photoluminescence enhancement from a single silicon-vacancy center (SVC) in a nanodiamond crystal embedded in various metallic nanoantennae, each having a different geometry. The study demonstrates how each antenna design enhances the photoluminescence of SVCs in diamond. In pa...

In this paper, a single-chip impulse antenna array is presented that performs spatial combining of picosecond impulses radiated from 8 elements. A new broadband beamforming architecture is introduced that controls the timing of impulses radiated from each antenna by delaying a trigger signal, with resolution steps of 300fsec. This method eliminates the distortive and narrowband effects of delay...

The paper presents a new practical design for 4 × 1 planar switched array of dielectric filled waveguide antennas loaded with bow-tie shaped slots operating at 26.5 to 29.5 GHz 5G millimetre-wave applications. is realized as three-layered architecture, the top layer behaving radiator, bottom feed network and control circuit; common ground plane in middle layer, offering small form factor. are u...

II. THEORY AND SIMULATION Abstract— A novel THz device concept called as CW HTS (high temperature superconductive) photomixer/antenna is proposed. Optical heterodyne photomixing in the DC-biased HTS strip has been employed to create THz signal, and the size of the strip on the grounded dielectric substrate is designed to have an efficient broadside radiation. Incorporating the HTS microstrip co...

Different fractal based structures have been widely used in numerous antenna designs for various applications. In this paper, a printed slot antenna has been introduced as a candidate for use in the dual band wireless communication applications. The antenna slot structure is in the form of a Sierpinski gasket of the first iteration. The antenna has been fed with 50Ohm microstrip transmission li...

The main contribution of this paper is a new method for classifying document images by combining textual and visual features repectively extracted with the Bag of Words (BoW) and the Bag of Visual Words (BoVW) techniques. While previous attempts have been showing disappointing results by combining visual and textual features with the Borda-count technique, we’re proposing here a combination thr...