Al-hussein, A., Luhaib, S. (2024). Design and Miniaturized a High Suppression Stop band Micro strip Low Pass Filter by using Slot Defected Ground Structure for 5G Applications. , 29(1), 126-131. doi: 10.33899/arej.2024.145273.1311
Ashraf Khalid Al-hussein; Saad Wasmi Osman Luhaib. "Design and Miniaturized a High Suppression Stop band Micro strip Low Pass Filter by using Slot Defected Ground Structure for 5G Applications". , 29, 1, 2024, 126-131. doi: 10.33899/arej.2024.145273.1311
Al-hussein, A., Luhaib, S. (2024). 'Design and Miniaturized a High Suppression Stop band Micro strip Low Pass Filter by using Slot Defected Ground Structure for 5G Applications', , 29(1), pp. 126-131. doi: 10.33899/arej.2024.145273.1311
Al-hussein, A., Luhaib, S. Design and Miniaturized a High Suppression Stop band Micro strip Low Pass Filter by using Slot Defected Ground Structure for 5G Applications. , 2024; 29(1): 126-131. doi: 10.33899/arej.2024.145273.1311

Design and Miniaturized a High Suppression Stop band Micro strip Low Pass Filter by using Slot Defected Ground Structure for 5G Applications

Al-Rafidain Engineering Journal (AREJ)
Volume 29, Issue 1, March 2024, Pages 126-131    PDF (714.5 K)
Document Type: Research Paper
DOI: 10.33899/arej.2024.145273.1311
Authors
Ashraf Khalid Al-hussein; Saad Wasmi Osman Luhaib*
Electrical Engineering Department, College of Engineering, University of Mosul, Mosul, Iraq
Abstract
In this paper, a low-pass filter (LPF) microstrip generalized Chebyshev type defected ground with a high suppression stopband was proposed. The resonators of the suggested filter were implemented using a T-shape microstrip. The filter resonators consist of three main parts. A part of the resonators was used to improve the rejection of the filter in the stopping region, a second part was used to increase the selectivity of the filter, and the last part was used to balance between the two regions. The microstrip LPF filter is designed on a Roger RT/Duroid 5880 substrate with εr=2.2, a thickness of 0.381 mm. 11th order generalized Chebyshev LPF was simulated using HFSS software. The simulation results were as follows: 2 GHz for the cut-off frequency, insertion loss of 0.55 dB at about 20 dB return loss, and a wide range of stopband suppression below the level of 28 dB from frequency 3.4 GHz to 20 GHz. The LPF selectivity was approximately 37.5 dB/GHz and a small and compact size filter with 0.014λ2g was introduced. The filter matches the specifications required for fifth-generation filters in wireless communications systems.
Keywords
Low pass filter; Microstrip; High suppression; Defected ground structure; DGS
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