This paper presents a broadband and compact planar quasi-Yagi antenna for multi-band 3G/4G applications. The proposed quasi-Yagi antenna consists of a modified bow-tie driver to increase the bandwidth, a passive reflector and two passive directors to enhance the directivity at the lower and higher ends of the operating band, respectively. A microstrip-to-slotline transition feed is used to achi...

A simple metasurface integrated with horn antenna exhibiting wide bandwidth, covering full Ku-band using 3D printing is presented. It consists of a 3D-printed and phase transformation surface placed at the aperture. Considering non-uniform wavefront printed horn, proposed configured by unit cells, consisting cube in centre which supported perpendicular cylindrical rods from its sides. Placement...

This paper presents wave propagation passing through reactive/radiating near-field regions at the Ka-band. Electric-field distributions with amplitude and phase information are measured noninvasively in the overall near-field regions. An electro-optic field probe and its associated imaging system for vector-stabilized electric field visualization are presented. The spatial and temporal evolutio...

Lobby 1 Chair: Tudor Palade (Technical University of Cluj-Napoca, Romania) , Stephan Stanko (FGAN-FHR, Germany) 2.1 SIWSeries Fed RDRA Array System for Millimeter-Wave Applications Wael Abdel Wahab (University of Waterloo, Canada); Safieddin Safavi-Naeini (University of Waterloo, Canada); Dan. Busuioc (University of Waterloo, Canada) A simple, low cost novel series feeding scheme to rectangular...

Abstract A transmissive metal unit working in the range of 18 GHz-29 GHz is designed this paper. This a three-layer circular slit with promising cross-polarization isolation properties. planar lens antenna center operating frequency 28 based on utilizing phase compensation algorithm. The numerical simulation results show that can improve gain horn from 22.9 dB to 25.6 dB, which effectively adva...

In this study, it is aimed to increase the phase responses of obtained unit cells by using fractal structures nested together. Then, effect these broad phase-response on antenna gain examined them as reflective elements reflect array antenna. For purpose, 3 different are designed: circle, Minkowski used in and rotating structure circle. The response first designed circle could not meet requirem...

In a multi-objective optimization process, several goals are traditionally combined into single fitness function. such cases, the choice of objective function is critical, as it should accurately represent desired goals. Here, we introduce new class functions with non-linearity and switching behavior, also provide method for engineering. Notably, proposed versatile forms growth during optimizat...