{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:44:33Z","timestamp":1760147073909,"version":"build-2065373602"},"reference-count":29,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2023,1,9]],"date-time":"2023-01-09T00:00:00Z","timestamp":1673222400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant program"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Simultaneously enhancing multiple antenna performance parameters is a demanding task, especially with a challenging set of design goals. In this paper, by carefully deriving a compatible set of enhancement techniques, we propose a compact\/lightweight\/low-cost high-performance L-band octagonal cavity-backed hybrid antenna with multiple attractive features: dual-polarization, wide impedance bandwidth, low cross-polarization, high gain, and high aperture efficiency. The ground cavity is octagonal, which allows the antenna to have a small footprint, and, more importantly, low cross-polarization and high aperture efficiencies when compared to a commonly-used square design. The hybrid design relies on the resonance merging of two radiating elements, i.e., radiating feedlines and a conductive open prism, to form a wide impedance bandwidth. To permit polarization diversity and low cross-polarization, it is differentially and orthogonally fed. Herein, a series of parametric simulation studies on antenna configurations provide information on how to improve the impedance bandwidth and cross-polarization performance. To verify the simulation studies, an antenna prototype was fabricated and tested. Excellent agreement between the simulated and measured results was reached.<\/jats:p>","DOI":"10.3390\/s23020731","type":"journal-article","created":{"date-parts":[[2023,1,9]],"date-time":"2023-01-09T07:05:09Z","timestamp":1673247909000},"page":"731","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Wideband Dual-Polarized Octagonal Cavity-Backed Antenna with Low Cross-Polarization and High Aperture Efficiency"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8314-360X","authenticated-orcid":false,"given":"Yanxia","family":"Liu","sequence":"first","affiliation":[{"name":"Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg, MB R3T 5V6, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9349-8076","authenticated-orcid":false,"given":"Dustin","family":"Isleifson","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg, MB R3T 5V6, Canada"},{"name":"Centre for Earth Observation Science, Clayton H. Riddell Faculty of Environment, Earth and Resources, University of Manitoba, Winnipeg, MB R3T 2N2, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lotfollah","family":"Shafai","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg, MB R3T 5V6, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1590\/S2179-10742010000200003","article-title":"Wideband dual-layer patch antenna fed by a modified L-strip","volume":"9","author":"Wang","year":"2010","journal-title":"J. Microw. Optoelectron. Electromagn. Appl."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"152992","DOI":"10.1016\/j.aeue.2019.152992","article-title":"Single-layer wideband high-gain circularly polarized patch antenna with parasitic elements","volume":"113","author":"Hussain","year":"2020","journal-title":"AEU-Int. J. Electron. Commun."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Liu, Y., Shafai, L., and Shafai, C. (2016, January 10\u201313). Gain and bandwidth enhancement of stacked H-shaped patch-open ring antenna. Proceedings of the 2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM), Montr\u00e9al, QC, Canada.","DOI":"10.1109\/ANTEM.2016.7550235"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"3910","DOI":"10.1109\/TAP.2018.2835673","article-title":"A microstrip magnetic dipole Yagi\u2013Uda antenna employing vertical i-shaped resonators as parasitic elements","volume":"66","author":"Yang","year":"2018","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1433","DOI":"10.1049\/el:19880979","article-title":"The SSFIP: A global concept for high-performance broadband planar antennas","volume":"24","author":"Zurcher","year":"1988","journal-title":"Electron. Lett."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"731","DOI":"10.1049\/el:20061003","article-title":"Experimental study of wideband hybrid dielectric resonator antenna on small ground plane","volume":"42","author":"Gao","year":"2006","journal-title":"Electron. Lett."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"2882","DOI":"10.1109\/TAP.2009.2029292","article-title":"High-gain hybrid dielectric resonator antenna for millimeter-wave applications: Design and implementation","volume":"57","author":"Perron","year":"2009","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"393","DOI":"10.1109\/TAP.2011.2167948","article-title":"Hybrid monopole-DRAs using hemispherical\/conical-shaped dielectric ring resonators: Improved ultrawideband designs","volume":"60","author":"Guha","year":"2011","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_9","unstructured":"Balanis, C. (2016). Antenna Theory: Analysis and Design, John Wiley & Sons."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"461","DOI":"10.1080\/02726343.2015.1084573","article-title":"Wideband Dual-Polarized Printed Dipole Antenna Using Differential Feed","volume":"35","author":"Hao","year":"2015","journal-title":"Electromagnetics"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"2248","DOI":"10.1109\/TAP.2017.2679762","article-title":"A wideband differentially fed dual-polarized antenna with stable radiation pattern for base stations","volume":"65","author":"Wen","year":"2017","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1162","DOI":"10.1002\/mop.22379","article-title":"Gain enhancement of a dielectric resonator antenna with use of surface mounted short horn","volume":"49","author":"Esselle","year":"2007","journal-title":"Microw. Opt. Technol. Lett."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"3157","DOI":"10.1109\/TAP.2010.2055792","article-title":"Wideband and high-gain composite cavity-backed crossed triangular bowtie dipoles for circularly polarized radiation","volume":"58","author":"Qu","year":"2010","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1979","DOI":"10.1109\/TAP.2006.877172","article-title":"Array thinning by using antennas in a Fabry\u2013Perot cavity for gain enhancement","volume":"54","author":"Gardelli","year":"2006","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"743","DOI":"10.1109\/TAP.2011.2173113","article-title":"The use of simple thin partially reflective surfaces with positive reflection phase gradients to design wideband, low-profile EBG resonator antennas","volume":"60","author":"Ge","year":"2011","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"6013","DOI":"10.1109\/TAP.2012.2213059","article-title":"Ultra-wideband differential wide-slot antenna with improved radiation patterns and gain","volume":"60","author":"Li","year":"2012","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1109\/8.827386","article-title":"Dual-band dual-polarized perforated microstrip antennas for SAR applications","volume":"48","author":"Shafai","year":"2000","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"471","DOI":"10.1109\/LAWP.2010.2050852","article-title":"A very compact ultrawideband printed omnidirectional monopole antenna","volume":"9","author":"Zaker","year":"2010","journal-title":"IEEE Antennas Wirel. Propag. Lett."},{"key":"ref_19","unstructured":"Mirmozafari, M. (2018). Design and Implementation of a Phased Array Antenna for Multi-mission Applications. [Ph.D. Thesis, University of Oklahoma]."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"251","DOI":"10.5194\/ars-13-251-2015","article-title":"Understanding and optimizing microstrip patch antenna cross polarization radiation on element level for demanding phased array antennas in weather radar applications","volume":"13","author":"Vollbracht","year":"2015","journal-title":"Adv. Radio Sci."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"977","DOI":"10.1109\/TAP.1986.1143929","article-title":"Analysis of an aperture coupled microstrip antenna","volume":"34","author":"Sullivan","year":"1986","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"14","DOI":"10.1109\/MAP.2014.6821758","article-title":"Revisiting the generation of cross-polarization in rectangular patch antennas: A near-field approach","volume":"56","author":"Bhardwaj","year":"2014","journal-title":"IEEE Antennas Propag. Mag."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"4950","DOI":"10.1109\/TAP.2019.2955212","article-title":"Mitigating High Cross-Polarized Radiation Issues Over the Diagonal Planes of Microstrip Patches","volume":"68","author":"Pasha","year":"2019","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Liu, Y., Shafai, L., and Isleifson, D. (2021, January 8\u201311). Excessive Aperture Efficiency of Compact Antennas Demonstrated by Waveguides and Small Horns. Proceedings of the IEEE 19th ANTEM, Winnipeg, MB, Canada.","DOI":"10.1109\/ANTEM51107.2021.9518998"},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Fujimoto, K., and Morishita, H. (2013). Modern Small Antennas, Cambridge University Press.","DOI":"10.1017\/CBO9780511977602"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"116","DOI":"10.1109\/TAP.1973.1140406","article-title":"The definition of cross polarization","volume":"21","author":"Ludwig","year":"1973","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"3074","DOI":"10.1109\/TAP.2020.3030922","article-title":"Decoupling between extremely closely spaced patch antennas by mode cancellation method","volume":"69","author":"Sun","year":"2020","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"766","DOI":"10.1109\/TAP.2015.2506201","article-title":"Compact broadband dual-polarized antenna for indoor MIMO wireless communication systems","volume":"64","author":"Lee","year":"2015","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"5324","DOI":"10.1109\/TAP.2022.3161463","article-title":"Improving Compact Short Backfire Antenna Gain and Cross-Polarization using Choke and Ring Cavity Loading","volume":"70","author":"Mansoori","year":"2022","journal-title":"IEEE Trans. Antennas Propag."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/23\/2\/731\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T18:03:52Z","timestamp":1760119432000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/23\/2\/731"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,1,9]]},"references-count":29,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2023,1]]}},"alternative-id":["s23020731"],"URL":"https:\/\/doi.org\/10.3390\/s23020731","relation":{},"ISSN":["1424-8220"],"issn-type":[{"type":"electronic","value":"1424-8220"}],"subject":[],"published":{"date-parts":[[2023,1,9]]}}}