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A New and Compact Wide-Band Microstrip Filter-Antenna Design for 2.4 GHz ISM Band and 4G Applications

Biomedical and Electronics Engineering, Faculty of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, UK
Electronic Techniques Department, Basra Technical Institute, Southern Technical University, Basra 61001, Iraq
Instituto de Telecomunicações, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
Department of Electrical Engineering, University of Misan, Misan 62001, Iraq
Department of Communication and Informatics Engineering, Basra University College of Science and Technology, Basra 61004, Iraq
Author to whom correspondence should be addressed.
Electronics 2020, 9(7), 1084;
Received: 15 June 2020 / Revised: 25 June 2020 / Accepted: 28 June 2020 / Published: 2 July 2020
(This article belongs to the Special Issue Recent Advances in Antenna Design for 5G Heterogeneous Networks)
A new and compact four-pole wide-band planar filter-antenna design is proposed in this article. The effect of the dielectric material type on the characteristics of the design is also investigated and presented. The filter-antenna structure is formed by a fourth-order planar band-pass filter (BPF) cascaded with a monopole microstrip antenna. The designed filter-antenna operates at a centre frequency of 2.4 GHz and has a relatively wide-band impedance bandwidth of about 1.22 GHz and a fractional bandwidth (FBW) of about 50%. The effects of three different types of substrate material, which are Rogers RT5880, Rogers RO3003, and FR-4, are investigated and presented using the same configuration. The filter-antenna design is simulated and optimised using computer simulation technology (CST) software and is fabricated and measured using a Rogers RT5880 substrate with a height (h) of 0.81 mm, a dielectric constant of 2.2, and a loss tangent of 0.0009. The structure is printed on a compact size of 0.32 λ0 × 0.30 λ0, where λ0 is the free-space wavelength at the centre frequency. A good agreement is obtained between the simulation and measurement performance. The designed filter-antenna with the achieved performance can find different applications for 2.4 GHz ISM band and 4G wireless communications. View Full-Text
Keywords: band-pass; compact; filter-antenna; LTE; microstrip; 4G band-pass; compact; filter-antenna; LTE; microstrip; 4G
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Al-Yasir, Y.I.A.; Alkhafaji, M.K.; A. Alhamadani, H.; Ojaroudi Parchin, N.; Elfergani, I.; Saleh, A.L.; Rodriguez, J.; Abd-Alhameed, R.A. A New and Compact Wide-Band Microstrip Filter-Antenna Design for 2.4 GHz ISM Band and 4G Applications. Electronics 2020, 9, 1084.

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