An effective approach to improve the detection efficiency of nanoscale light sources relies on a planar antenna configuration, which beams emitted into narrow cone. Planar antennas operate like optical Yagi-Uda antennas, where reflector and director elements are made metal films. Here we introduce investigate, both theoretically experimentally, scanning implementation antenna. Using small ensem...

In In this paper, two low profile, single fed cavity backed slot antennas providing a circularly polarized (CP) wave are introduced. One of the antennas presents a right-handed CP (RHCP) wave, while the other one offers a left handed CP (LHCP) wave. The proposed antennas consist of a square shaped Substrtae Integrated Waveguide (SIW) cavity incorporatng two couples of radiating slots to radiate...

Introduction Recently the concept of traveling wave excitation was demonstrated for high field MRI (1). In these experiments RF excitation and reception was done by using a patch antenna, suited for this task. The disadvantage of this antenna, however, is its size. A proper patch antenna for 7 T MRI is almost as large as the diameter of the bore. This limits the location of the antenna to the e...

The purpose of this paper is three fold. First, the major theoretical pattern relationships of TV and/or FM transmitting antennas are dealt with. Secend, the computer calculation method and designing of such patterns using the given relationships. And third, a method in which a computer graphic system can be used to design such antennas for a specific pattern is introduced and its results are p...

We designed the wire monopole antenna bent at three points by applying a machine learning technique to achieve good impedance matching characteristic. After performing deep neural network (DNN)-based training, we validated our model evaluating mean squared error and R-squared score. Considering of about zero score one, performance prediction resulting showed high accuracy compared with that num...

Fractal shaped antennas and fractal miniaturized elements are becoming a promising new family of devices with a wealth of potentially useful applications [1]. Owing to the facility of manufacturing fractal devices (the metallisation process of fractal antennas up to a few iterations of the recursive process that generates the fractal structure is a relatively simple task), several different pro...