الفهرس 
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Abstract
Control and manipulation of electromagnetic waves is at the heart of many industries from wireless communication, Internet and optical data storage to imaging and displays. Progress in these technologies places challenging demands on material properties and therefore structured electromagnetic materials. Metamaterials are a special class of structured materials. They have already leaded to many unprecedented microwave applications, which may be classified in three categories: guided-wave, radiated-wave and refracted-wave applications. Radiated-wave applications cover several types of novel antennas and reflectors, which may be 1D or 2D, passive or active, and static or dynamically tuned. Patterning on the sub-wavelength scale allows precise engineering of their electromagnetic properties over a range going far beyond natural media. The aim of this thesis is the investigation of different designs using CRLH-TL in applications of microwave engineering to know their distinctive properties. Firstly, harmonics resonance frequency of different embedded CRLH-TL array has been introduced. The analysis and investigation are done by commercial software. The good agreement between the theoretical expectation and the simulation results is observed. The application of the selected proposed CRLH-TL array was examined in multiband microstrip antenna design. The proposed microstrip antenna structure has been fabricated and the measured S-parameters of the proposed structure can be analyzed with network analyzer to demonstrate the excellent performance and satisfy multiband frequencies using single microstrip patch antenna to meet the requirements for different multiband applications. Secondly, a new rectangular waveguide using CRLH-TL array structure has been introduced and used as an alternative to the traditional rectangular waveguide. The analysis and investigation are done by commercial software. The application of the selected proposed CRLH-TL array was examined in rectangular waveguide design. The proposed CRLH-TL rectangular waveguide design has been fabricated and the measured S- parameters of the proposed CRLH-TL waveguide structure can be analyzed with network analyzer and compared with the simulation results to demonstrate the excellent