Bandpass Filter design Using Planar Couple Microstrip Lines

Nurul Atiqah, Ismail (2011) Bandpass Filter design Using Planar Couple Microstrip Lines. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Filter is highly desirable in communication system. It functions to pass through the desired frequencies within the range and block unwanted frequencies. In addition, filters are also needed to remove out harmonics that are present in the communication system. The objective of this project is to design, construct and fabricate microstrip suitable with centered at 9GHz. The filter must operate within the unlicensed 9GHz band. This application is in the X band range (8-12GHz) currently being used for industrial, medical and scientific applications. A planar couple microstrip lines prototype filter was produced with the bandwidth is 1GHz. The filter covers the 9GHz band and the bandwidth from 8.5GHz to 9.5 GHz. The filter was fabricated on FR4 board, that had a relative dielectric constant, εr = 4.7, a loss tangent tan δ = 0.019 and thickness, h of 1.6 mm

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