Design of Miniaturized Dual-Band Bandpass Microstrip Filter Based on C-Shaped Metamaterial Resonators for RF/Microwave Applications

Authors M. Berka1,2 , T. Islam3 , S. Das4 , A. Serhane1 , M.L. Kumar5, Z. Mahdjoub2
Affiliations

1Department of Electrotechnic, University Mustapha Stambouli of Mascara, 29000 Mascara, Algeria

2E.P.O Laboratory, 22000 Sidi Bel Abbés, University of S.B.A., Algeria

3Department of Electrical and Computer Engineering, University of Houston, 77204 Houston, TX, USA

4Department of Electronics and Communication Engineering, IMPS College of Engineering and Technology, Malda, W.B., India

5Department of Electronics and Communication Engineering, Koneru Lakshmaiah Education Foundation, Green Fields, 522302vVaddeswaram, A.P., India

Е-mail m.barka@univ-mascara.dz
Issue Volume 16, Year 2024, Number 4
Dates Received 10 April 2024; revised manuscript received 18 August 2024; published online 27 August 2024
Citation M. Berka, T. Islam, et al., J. Nano- Electron. Phys. 16 No 4, 04012 (2024)
DOI https://doi.org/10.21272/jnep.16(4).04012
PACS Number(s) 84.40.Ba
Keywords Bandpass filter, Dispersion diagram, F-CSRRs, Metamaterial (2) , Microwave frequencies.
Annotation

In this article, a dual-band bandpass microstrip filter (DBBPF) is suggested and studied for RF/microwave applications. Our filter design method is based on two basic concepts; the use of metamaterial resonators in C-shaped split rings (C-SRR) to have the left-handed behavior (LH) with minimized losses and the feed by a microstrip line of significant length folded for the desired miniaturization. The two C-SRRs are optimized for a size of 6  3 mm2 to cover the desired frequency bands and the two feed lines have a length of 37.1 mm to ensure the necessary adaptation. The search of a strong electromagnetic coupling between the two C-SRRs and the feed lines allowed us to choose the best position to place our resonators in the filter. The simulation of the filter parameters for two different proposed configurations shows two different qualities. According to the simulation outcomes for the two proposed filter configurations, two kinds of frequency response were obtained with different characteristics. For the first configuration where the two C-SRRs are separated by the folded arms of the two feed lines, the filter response is not clear. Contrary to that, the frequency response of the filter is desirable for the second configuration. The suggested filter which is represented by the second configuration has covered both bands (5.88 to 6.39 GHz and 10.75 to 11.16 GHz) for band-pass behavior. In addition, the analysis of the dispersion diagram allowed us to select the electromagnetic behavior associated with each band.

List of References