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 | 2016 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/42716 | |
dc.description.abstract | A wideband and unidirectional loop antenna partially loaded with mu-negative (MNG) metamaterial unit cells is presented. To reduce the electrical size of the antenna, its first resonance is formed by capacitively loading a conventional one-wavelength loop antenna to excite the mu-zero resonance that is independent of the resonator's size. As a result of partial loop loading using properly designed and distributed slots, the amplitude of the surface current can be engineered to be higher in the feeding arm while achieving a zero phase shift along each arm of the loop structure. Consequently, unidirectional radiation with a moderate front-to-back ratio (FBR) is achieved without using any reflectors. Moreover, as a result of the capacitive loading, the loop antenna is divided into an array of dipoles that are excited with a 90° phase difference, enabling unidirectional radiation at the loop-mode resonance. To both enhance the impedance matching of the antenna at lower frequencies and excite an additional resonance, a strip patch is added in the vicinity of the loop. The proposed structure is smaller by 80% than similar MNG loaded loops and achieves a wide fractional bandwidth of 52% (0.64-1.1 GHz) with a peak FBR and gain values of 12 dB and 3.2 dBi, respectively. © 2016 IEEE. | en |
dc.source | IEEE Antennas and Wireless Propagation Letters | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85006172772&doi=10.1109%2fLAWP.2016.2542799&partnerID=40&md5=221e1e82fc1c9765c6f297727b32479a | |
dc.subject | Antennas | en |
dc.subject | Loading | 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 | Dipole antennas | en |
dc.subject | Mu-negative | en |
dc.subject | Fractional bandwidths | en |
dc.subject | Front to back ratio | en |
dc.subject | Loop antennas | en |
dc.subject | Metamaterial antenna | en |
dc.subject | Unidirectional loop | en |
dc.subject | Capacitively loading | en |
dc.subject | Dipole array | en |
dc.subject | Dipole arrays | en |
dc.subject | Directivity enhancement | en |
dc.subject | Loop antenna | en |
dc.subject | Mu-negative metamaterial | en |
dc.subject | Mu-zero resonance (mzr) | en |
dc.subject | Phase shift | en |
dc.subject | Resonance | en |
dc.title | Compact Wideband Loop Antenna Partially Loaded With Mu-Negative Metamaterial Unit Cells for Directivity Enhancement | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1109/LAWP.2016.2542799 | |
dc.description.volume | 15 | |
dc.description.issue | Journal Article | en |
dc.description.startingpage | 1893 | |
dc.description.endingpage | 1896 | |
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 Antennas Wirel.Propag.Lett. | en |
dc.contributor.orcid | Antoniades, Marcos A. [0000-0002-9699-2387] | |
dc.gnosis.orcid | 0000-0002-9699-2387 | |