03840ntm a2200301 i 4500003000800000005001700008006001900025007000300044008004100047020003300088040002700121100004200148245016100190264003600351264001200387300005600399336002100455337002500476338002300501347002400524500006300548502007000611504004000681520268300721610007803404650004503482650001103527MY-KuUP20251125111024.0t||||fr|||| 000 0 ta250127t20242024my a|||fr|||| 000 0 eng d  aTHE0009989 (Local)qHardback  aUMPSAbengcUMPSAerda0 aAzahani Natasha Binti Azman,eauthor.10aFormulation of dielectric composite  material based on ananas comosus  waste and its application towards  microwave engineeringcAzahani Natasha Binti Azman 1aKuantan, Pahang :bUMPSA,c2024 4c© 2024  axi, 94 pages :billustrations ;c30 cm. +e1 CD-ROM  2rdacontentatext  2rdamediaaunmediated  2rdacarrieravolume  2rdaatext filebPDF  aFaculty of Electrical & Electronics Engineering Technology  aThesis (Master of Science) -- Universiti Malaysia Pahang – 2024  aIncludes bibliographical references3 aIn contemporary electronic applications such as telecommunications, computing,  control systems, and others, dielectric materials play a crucial role, with permittivity  and loss tangent being vital properties. Dielectric materials are used in structures like  capacitors, microstrip antennas, and coaxial cables. Utilizing dielectric materials  derived from waste offers a promising avenue for reducing pollution and conserving  resources. Pineapples, in particular, generate approximately 75% waste, each  possessing unique characteristics. This study explores the potential utilization of  pineapple leaves to develop new fibers or raw materials for antenna applications. The  primary objective is to analyze key factors in preparing dielectric materials from  pineapple plantation waste, optimize the fabrication process of pineapple plantation  waste, and evaluate microwave application performance with a reflection coefficient  less than -10 dB. This analysis employs rapid two level factorial analysis, optimization  analysis, and one factor at a time analysis to identify significant factors during  preparation. The process involves quick determination of the optimum variable factor,  leading to swift analysis. Dielectric material preparation includes chemical treatment,  sample fabrication, and sample characterization. Permittivity measurement at 5 GHz is  conducted using a G-band rectangular waveguide. Factors contributing to the process  include the ratio of pineapple leaves to distilled water, boiling time, heated and nonheated processes, and the mass of pineapple leaves powder. The mass of pineapple  leaves powder, specifically 15 g, emerges as the most significant factor in achieving a  high permittivity value of 5.03 at 5 GHz frequency. Additionally, the design of a  microstrip patch antenna using a pineapple leaves substrate aims to achieve a -10 dB  reflection coefficient with higher dielectric permittivity at 5 GHz frequency. The  antenna design undergoes simulation using CST software, resulting in a -32.76 dB  reflection coefficient, efficiently converting more than 90% of the input power into  antenna radiation. The microstrip patch antenna is fabricated and characterized to  validate the concept. The successful implementation of the pineapple leaves development process in fabricating the antenna not only validates high dielectric  permittivity values but also demonstrates the practical applicability of pineapple leavesbased materials in electronic applications. This highlights the potential of sustainable  and eco-friendly materials derived from agricultural waste in contributing to  advancements in technology and innovation.20aFaculty of Electrical & Electronics Engineering TechnologyxDissertations 0aUniversities and collegesxDissertations 0aTheses