الفهرس 
Chapter One: Introduction to microstrip patch antennasOnly 14 pages are availabe for public view
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Abstract
With the widespread adoption of wireless communication technology in recent years, there has been a significant increase in demand for compact, low-profile, and broadband antennas. Microstrip patch antennas (MPAs) have been proposed to meet the requirement. Because of their low profile, light weight, low cost, and compatibility with integrated circuits, MPAs are widely used in wireless communication applications. Low profile antennas may be necessary in high-performance aircraft, spacecraft, satellite, and missile applications where size, weight, cost, performance, ease of installation, and aerodynamic profile are constraints. Many other governmental and commercial uses, like wireless communications and mobile radio, already have similar requirements. Micro strip antennas can be utilized to satisfy these needs. These antennas have a low profile, are conformable to planar and non-planar surfaces, can be easily and affordably manufactured using modern printed-circuit technology, are mechanically robust when mounted on rigid surfaces, are compatible with MMIC designs, and, depending on the patch shape and mode chosen, have a wide range of resonant frequencies, polarizations, patterns, and impedance options. This work creates one-element, two-element, and four-element antenna arrays. The purpose of antenna arrays is to provide sufficient energy to penetrate human tissues. In this thesis, a proposed rectangular microstrip patch antenna with defect ground structure (DGS) operating in the X-band around 10 GHz is developed for tumor detection. The antenna is designed with dimensions of 27.3x28.7x1.588 mm3, a substrate material of Roger-RT/5880 (Ԑr = 2.2), and a microstrip feed-line to supply the antenna’s radiating patch. The design dealt with a single element and an array of elements in order to improve performance compared to previously published research. This thesis is a study of cancer tumors detection using microwave techniques. This technique depends on using a slotted microstrip antenna with DGS to find the difference between the reflection coefficient (S11) scattered from human phantoms with tumor and those without tumor.