الفهرس 
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Abstract
In recent years, Microstrip patch antennas have gained significant attention due to their numerous merits. Their low profile, ease of integration, cost effectiveness, and compatibility with modern fabrication techniques make them highly desirable for a wid e range of applications. The resonant behavior of microstrip patch antennas at 60GHz spots them as a promising choice for high speed wireless communication systems, offering low latency and efficient transmission in the millimeter wave frequency range. The objective of this thesis is design ing microstrip patch antennas suitable for 5G mobile applications, specifically targeting the resonance frequency of 60 GHz. The aim is to achieve a wide bandwidth to support high quality, low latency transmission of a large amount of data. Two different designs of microstrip patch antenna will be present ed i n the thesis. The first design utilized an elliptical circular microstrip patch antenna with a compact size of 10 × 10 mm 2 . Using different substrate materials, significant improvements were achieved, with response levels reaching 23 dB and 35 dB for one radiator at resonance frequency 60GHz After that, t he design is expanded to a multiple input multiple output (MIMO) antenna with two radiators, resulting in a response of 28 dB with a 5 GHz bandwidth and suitable gain 4.5 dB . However, mutual coupling issues were observed, leading to an increase in the number of radiators to four, with a compact size of 23 × 23 mm 2 . This configuration achieved good return loss parameters reaching 30 dB at the resonance frequency. To address mutual coupling, isolators were added, though the response did not reach high levels. Increasing the substrate size to 30 × 30 mm 2 improved the design behavior , demonstrating perfect results in terms of response and isolator effects. Finally , the Fork design was proposed to achieve a super ultra wide band around 60 GHz and high gain 9.2 dB. This design achieved a bandwidth of more than 40 GHz and exhibited proper S parameter responses and mutual coupling levels below 25 dB. However, due to connector compatibility issues, the design could not be fully measured and validated.