In this paper applications of metamaterial has been discussed. Metamaterial is an artificial material which exhibits unique properties which cannot be achieved from the conventional materials. Metamaterial can be used as antenna substrate, feed networks, phased array antenna and antenna ground planes. Metamaterial can be used to increase the gain directivity and bandwidth of antenna. In body we...

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...

Corrugated web girders represent a new structural system emerged in the past two decades. The girder’s flanges provide the flexural strength of the girder with no contribution from the corrugated web which provides the girder’s shear capacity. Failure of the web occurs by steel yielding, web buckling or interactively between them. Lateral torsion and local flange buckling of corrugated web gird...

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...

In this paper the effect of corrugated diaphragm on performance of MEMS microphone is described. The corrugated diaphragm is modeled in order to improve the sensitivity of micromachined silicon acoustic sensor. Analytical analyzes have been carried out to derive mathematic expressions for the mechanical sensitivity and displacement of corrugated diaphragm with residual stress. It is shown that ...

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...