A low-cost dual bandpass planar filter for WiMAX and mobile communications

Amal Kadiri (Informatic, Electronic and Telecommunication Laboratory (MIET), Faculty of Science and Technology)
Abdelali Tajmouati (Informatic, Electronic and Telecommunication Laboratory (MIET), Faculty of Science and Technology)
Jamal Zbitou (The Information and Communication Technologies Laboratory (LABTIC), ENSA of Tangier, University of Abdelmalek Essaadi)
Ahmed Lakhssassi (Laboratory of advanced microsystems engineering, University of Quebec in Outaouais)

Indonesian Journal of Electrical Engineering and Computer Science
Vol 33, No 2: February 2024

This study proposes a new design of low-cost dual-bandpass filter for worldwide interoperability and microwave access (WiMAX) band at 3.50 GHz and mobile communications band at 1.19 GHz. A high pass filter and a stopband filter make up the new dual-bandpass filter structure. Different theoretical studies were carried out for the design of the proposed filter. This filter’s base is a RO5880 substrate with a dielectric permittivity constant of 2.2, loss tangent of 0.0009 and 1.6 mm thickness. High mashing density was used to validate the various simulated structures while accounting for two numerical methods: the moment technique and the finite integration method. The final circuit's overall dimensions are 60×178,3 mm2.