dc.contributor.author | Ahdi Rezaeieh, S. | en |
dc.contributor.author | Antoniades, Marcos A. | en |
dc.contributor.author | Abbosh, A. M. | en |
dc.creator | Ahdi Rezaeieh, S. | en |
dc.creator | Antoniades, Marcos A. | en |
dc.creator | Abbosh, A. M. | en |
dc.date.accessioned | 2019-04-08T07:44:34Z | |
dc.date.available | 2019-04-08T07:44:34Z | |
dc.date.issued | 2017 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/42715 | |
dc.description.abstract | A wideband and unidirectional loop antenna with enhanced and stable gain is presented. To reduce the size of the antenna, the loop is loaded with three mu-negative (MNG) metamaterial unit-cells. The proposed unit-cells consist of a series-gap capacitor and a shunt meandered floating inductor. The series capacitive loading is used to excite the zeroth order resonance (ZOR) of the MNG unit-cell, whereas the floating inductor is used to improve impedance matching. To enhance the front-to-back-ratio (FBR) of the antenna and widen its operating bandwidth, the loop is loaded with a tuning slot in the vicinity of the loaded unit-cells. To overcome the low gain of the antenna at frequencies above the ZOR and thus obtain a stable gain, two tightly coupled dumbbell and arc-shaped directors are proposed. The shape and operation of these directors are inspired by the cylindrical capacitor, which achieves higher coupling compared to a planar capacitor with the same area. The antenna achieves a compact size of 0.25λ0× 0.29λ0 with a wide fractional bandwidth of 34% at 0.76-1.07 GHz, and peak measured gain and FBR values of 4.5 dBi and 16 dB, respectively. © 2017 IEEE. | en |
dc.source | IEEE Transactions on Antennas and Propagation | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018507582&doi=10.1109%2fTAP.2017.2671027&partnerID=40&md5=b15fc638fc8e5427a85fbab591df78e3 | |
dc.subject | Antennas | en |
dc.subject | Metamaterial antennas | en |
dc.subject | Metamaterials | en |
dc.subject | Microwave antennas | en |
dc.subject | Bandwidth | en |
dc.subject | Slot antennas | en |
dc.subject | Antenna arrays | en |
dc.subject | Directive antennas | en |
dc.subject | Mu-negative | en |
dc.subject | Capacitive loading | en |
dc.subject | Cells | en |
dc.subject | Cylindrical capacitors | en |
dc.subject | Cytology | en |
dc.subject | Fractional bandwidths | en |
dc.subject | Front to back ratio | en |
dc.subject | Loop antenna | en |
dc.subject | Loop antennas | en |
dc.subject | Metamaterial antenna | en |
dc.subject | Mu-negative (mng) transmission line | en |
dc.subject | Operating bandwidth | en |
dc.subject | Quasi-yagi antenna | en |
dc.subject | Unidirectional loop | en |
dc.subject | Zeroth order resonance (zor) antenna | en |
dc.title | Gain Enhancement of Wideband Metamaterial-Loaded Loop Antenna with Tightly Coupled Arc-Shaped Directors | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1109/TAP.2017.2671027 | |
dc.description.volume | 65 | |
dc.description.issue | 4 | |
dc.description.startingpage | 2090 | |
dc.description.endingpage | 2095 | |
dc.author.faculty | Πολυτεχνική Σχολή / Faculty of Engineering | |
dc.author.department | Τμήμα Ηλεκτρολόγων Μηχανικών και Μηχανικών Υπολογιστών / Department of Electrical and Computer Engineering | |
dc.type.uhtype | Article | en |
dc.source.abbreviation | IEEE Trans Antennas Propag | en |
dc.contributor.orcid | Antoniades, Marcos A. [0000-0002-9699-2387] | |
dc.gnosis.orcid | 0000-0002-9699-2387 | |