Abstract: In this paper, we will present the design and the fabrication of a new configuration of a microstrip low pass filter. The originality of this work is that the final proposed filter is miniature and presents good performances in term of insertion loss around -0.15dB and it has a wide stopband until 7 GHz. The design of such filter is based on the use of optimization and tuning methods integrated into two electromagnetic solvers ADS and CST-MWS. After the fabrication, the final LPF structure is tested which give a good agreement between simulation results for the both solvers and measurement responses. The proposed filter has a cutoff frequency of 2.33 GHz which makes it suitable for many standards like DCS "Digital communication system", and UMTS "Universal Mobile Telecommunications System" bands. The final circuit presents an area of 20x20mm2.

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