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During the conceiving of arrays antennas, the problem major that we face is the knowledge of the best inter-elements distance and phase shift between radiating elements that we can used to obtain the best radiating performance. So our goal in this paper is to notice the impact of these two parameters in terms of arrays factors and directivity of different arrays antennas (linear, planar and circular)...
The main objective of this work is to make a comparative study of the radiation patterns of circular patch antenna excited in transverses magnetics modes TM11, TM21, TM31, TM41, TM51 and TM61. This antenna is printed on a Epoxy substrate having a dielectric constant of 4.4 and designed at a height 1.58mm from the ground plane. This study is based on the model approach of the resonant cavity and intended...
As a vital and integrated part of the radio-frequency identification (RFID) system, RFID antennas have been received much attention over years, and their design is very urgent and significant. In fact, the development of RFID antenna is of theoretical significance and practical value for the RFID system.
In this paper, a linear microstrip array antenna design with End-fire characteristic has been presented for ultra wideband wireless communication. Our goal is to radiate the maximum energy in one desired direction without any secondary lobes in another regions, and to have a very wideband frequency operation that meets different implementation. The proposed array antenna consists of a two square radiating...
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