In this project, a design of a microstrip hairpin bandpass filter with center frequency of 5.2 GHz is proposed. The filter is designed to operate within 10% operating bandwidth. IE3D software is fully utilized to simulate the response of hairpin bandpass filter. It will demonstrate the third order of the Tschebyshev elements. The specified pass band insertion loss must not exceed 2dB while the pass band return loss was to be more than 15 dB. Our proposed design aims to achieve an insertion loss as close to 0 and a return loss higher than 15 db. A high return loss shows how well devices or lines are matched and also ensures a lower insertion loss. The filter was fabricated on a FR4 substrate having a relative permittivity of 4.2, and substrate thickness 0.508mm respectively. The filter characteristics were then measured using Vector Network Analyzer. The simulation results show a good agreement.
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