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

Al-Yasir, Yasir I. A.; Alkhafaji, Mohammed K.; A. Alhamadani, Hana�a; Ojaroudi Parchin, Naser; Elfergani, Issa; Saleh, Ameer L.; Rodriguez, Jonathan; Abd-Alhameed, Raed A.

Abstract

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.

Citation

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. (2020). A New and Compact Wide-Band Microstrip Filter-Antenna Design for 2.4 GHz ISM Band and 4G Applications. Electronics, 9(7), Article 1084. https://doi.org/10.3390/electronics9071084

• Journal Article Type: Article
• Acceptance Date: Jun 28, 2020
• Online Publication Date: Jul 2, 2020
• Publication Date: 2020
• Deposit Date: Feb 21, 2022
• Publicly Available Date: Feb 21, 2022
• Journal: Electronics
• Publisher: MDPI
• Peer Reviewed: Peer Reviewed
• Volume: 9
• Issue: 7
• Article Number: 1084
• DOI: https://doi.org/10.3390/electronics9071084
• Keywords: band-pass; compact; filter-antenna; LTE; microstrip; 4G
• Public URL: http://researchrepository.napier.ac.uk/Output/2840183