NESTED CIRCULAR ELLIPTICAL SHAPED MIXED LOOP RESONATOR BASED BANDPASS FILTER FOR MICROWAVE APPLICATIONS / PENAPIS JALUR BERASASKAN CAMPURAN GEGELUNG PENYALUN BERBENTUK SARANG BULAT UNTUK APLIKASI GELOMBANG MIKRO

Mohammad Rashed Iqbal Farque; Md. Jubaer Alam; Muhamad Roszaini Roslan; Mohammad Tariqul Islam

doi:10.11113/jt.v82.13540

Authors

Mohammad Rashed Iqbal Farque Pusat Sains Angkasa (ANGKASA), Institut Perubahan Iklim (IPI), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
Md. Jubaer Alam Department of Electrical and Electronic Engineering, IUBAT, Dhaka, Bangladesh
Muhamad Roszaini Roslan Pusat Sains Angkasa (ANGKASA), Institut Perubahan Iklim (IPI), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
Mohammad Tariqul Islam Pusat Kejuruteraan Elektrik & Elektronik Termaju, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia

DOI:

https://doi.org/10.11113/jt.v82.13540

Keywords:

Bentuk ellipsis, penapis jalur, penyalun gelung campuran, struktur bahan meta

Abstract

An elliptical thumb printed nested circular mixed loop resonator (MLR) is introduced in this article to design a multiple bandpass filter for microwave applications. The proposed structure is composed of a series of loop resonators on a Rogers RT-5880 dielectric substrate, where the overall system is developed into a 377Î© framework. Similar structure is designed on both sides of the substrate and an investigation is made on scattering parameters, relative permittivity, permeability, refractive index and current distributions. The 12 Â´ 14 mm²structure is designed and evaluated by a simulation software CST microwave studio and the metamaterial characteristics have been classified by Nicolson-Ross-Weir method at the filtering frequencies. The proposed filter shows resonances at 2.65 GHz, 5.85 GHz, 7.12 GHz, and 8.59 GHz, and the measured results are compared with the simulated ones. With a favorable design and double-negative characteristics, this design is suitable for multiple bandpass filter particularly for S, C, and X-band applications.

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