In this paper we investigate comparison methods of different geometric configurations of adaptive antenna arrays for mobile communications. The investigated antenna configurations were linear, semicircular, rectangular, wing and zigzag array. All considered antenna arrays consisted of seven antenna elements with an inter-element spacing of half wavelength. The Geometry macrocellular environment...

This thesis investigates the performance of a phased array of antenna elements conforming to a paraboloidal surface. We hypothesize that such a conformal phased array would have performance comparable to that of a correspondingly sized planar array. The performance of a paraboloidal array of antenna elements was simulated using an array program, and the resulting gains, side-lobe levels, and ha...

This paper presents a 1×4 array antenna using asymmetric T-shaped slit loaded microstrip antenna (MSA). The antenna consists of four MSAs align vertically on a dielectric substrate and ground plane. This antenna will be utilized in WLAN applications as the commercial panel antenna. A modified array configuration is proposed to further enhance the antenna radiation characteristics and usable ban...

Recently, superresolution techniques for Direction of arrival (DOA) estimation, such as MUSIC (MUltiple SIgnal Classification) algorithm [1], have become indispensable. By the assumption of an ideal array antenna, following problems are caused in an actual measurement. Array elements often have gain and phase errors, and mutual coupling effects cannot be also ignored in general, which degrade p...

Wideband, wide-scan antenna arrays are a promising candidate for the future wireless networks and as well as an essential part of experimental radio astrophysics. Understanding the underline physics of the element performance in the array environment is paramount to develop and improve the performance of array systems. The focus of this thesis is to develop novel wideband antenna array technolo...

In this work, the method of iterative Fourier transform phase reconstruction, conventionally used in holography and optical image reconstruction, is applied to phase only synthesis of antenna patterns. The method is applied to two types of pattern synthesis problems: "main lobe beam shaping" and "side-lobe-level reduction". The proposed method is most useful in the efficient employment of attai...