Alibakhshikenari, MohammadVirdee, Bal S.See, Chan H.Shukla, PanchamkumarMansouri Moghaddam, SadeghZaman, Ashraf UzShafqaat, SamiaAkinsolu, Mobayode O.Liu, BoYang, JianAbd-Alhameed, RaedFalcone Lanas, FranciscoLimiti, Ernesto2022-04-062022-04-0620210018-926X10.1109/TAP.2021.3118784https://academica-e.unavarra.es/handle/2454/42640In this paper, a novel dual-polarized highly-folded self-grounded Bowtie antenna that is excited through I-shaped slots is proposed for applications in sub-6GHz 5G multiple-input-multiple-output (MIMO) antenna systems. The antenna consists of two pairs of folded radiation petals whose base is embedded in a double layer of FR-4 substrate with a common ground-plane which is sandwiched between the two substrate layers. The ground-plane is defected with two I-shaped slots located under the radiation elements. Each pair of radiation elements are excited through a microstrip line on the top layer with RF signal that is 180° out of phase with respect to each other. The RF signal is coupled to the pair of feedlines on the top layer through the I-shaped slots from the two microstrip feedlines on the underside of the second substrate. The proposed feed mechanism gets rid of the otherwise bulky balun. The Bowtie antenna is a compact solution with dimensions of 32 32 33.8 mm3. Measured results have verified that the antenna operates over a frequency range of 3.1-5Ghz and exhibits an average gain and antenna efficiency in the vertical and horizontal polarizations of 7.5 dBi and 82.6%, respectively.6 p.application/pdfengCreative Commons Attribution 4.0 International5G applicationsAntenna measurementsAntennasBowtie antennaBroadband antennasDual-polarizedI-shaped slotMicrostripMIMOPhased arraysSlot antennasSlotted self-grounded structureSub-6 GHzWidebandinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessAcceso abierto / Sarbide irekia