{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,7]],"date-time":"2026-05-07T15:39:03Z","timestamp":1778168343325,"version":"3.51.4"},"reference-count":44,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2020,7,2]],"date-time":"2020-07-02T00:00:00Z","timestamp":1593648000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"H2020-MSCA-ITN-2016 SECRET-722424","award":["722424"],"award-info":[{"award-number":["722424"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Electronics"],"abstract":"<jats:p>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 \u03bb0 \u00d7 0.30 \u03bb0, where \u03bb0 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.<\/jats:p>","DOI":"10.3390\/electronics9071084","type":"journal-article","created":{"date-parts":[[2020,7,2]],"date-time":"2020-07-02T05:00:08Z","timestamp":1593666008000},"page":"1084","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":60,"title":["A New and Compact Wide-Band Microstrip Filter-Antenna Design for 2.4 GHz ISM Band and 4G Applications"],"prefix":"10.3390","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7859-3550","authenticated-orcid":false,"given":"Yasir I. A.","family":"Al-Yasir","sequence":"first","affiliation":[{"name":"Biomedical and Electronics Engineering, Faculty of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, UK"}]},{"given":"Mohammed K.","family":"Alkhafaji","sequence":"additional","affiliation":[{"name":"Electronic Techniques Department, Basra Technical Institute, Southern Technical University, Basra 61001, Iraq"}]},{"given":"Hana\u2019a","family":"A. Alhamadani","sequence":"additional","affiliation":[{"name":"Electronic Techniques Department, Basra Technical Institute, Southern Technical University, Basra 61001, Iraq"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8375-0269","authenticated-orcid":false,"given":"Naser","family":"Ojaroudi Parchin","sequence":"additional","affiliation":[{"name":"Biomedical and Electronics Engineering, Faculty of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0440-8025","authenticated-orcid":false,"given":"Issa","family":"Elfergani","sequence":"additional","affiliation":[{"name":"Instituto de Telecomunica\u00e7\u00f5es, Campus Universit\u00e1rio de Santiago, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0498-736X","authenticated-orcid":false,"given":"Ameer L.","family":"Saleh","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, University of Misan, Misan 62001, Iraq"}]},{"given":"Jonathan","family":"Rodriguez","sequence":"additional","affiliation":[{"name":"Instituto de Telecomunica\u00e7\u00f5es, Campus Universit\u00e1rio de Santiago, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2972-9965","authenticated-orcid":false,"given":"Raed A.","family":"Abd-Alhameed","sequence":"additional","affiliation":[{"name":"Biomedical and Electronics Engineering, Faculty of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, UK"},{"name":"Department of Communication and Informatics Engineering, Basra University College of Science and Technology, Basra 61004, Iraq"}]}],"member":"1968","published-online":{"date-parts":[[2020,7,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Rodriguez, J. 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