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A low-cost printed CP patch antenna for RFID smart bookshelf in library / Lau, Pui-Yi in IEEE transactions on industrial electronics, Vol. 57 N° 5 (Mai 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 5 (Mai 2010) . - pp. 1583 - 1589 Titre : A low-cost printed CP patch antenna for RFID smart bookshelf in library Type de document : texte imprimé Auteurs : Lau, Pui-Yi, Auteur ; Yung, Kenneth Kin-On, Auteur ; Yung, Edward Kai-Ning, Auteur Année de publication : 2011 Article en page(s) : pp. 1583 - 1589 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Antenna  array  Circularly  polarized  (CP)  Radio-frequency  identification  (RFID)  antenna  Sequentially  rotated  feeding  Small  patch  antenna  Wide-beamwidth  antenna Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a small wideband circularly polarized patch antenna printed on the low-cost FR-4 material for radio-frequency-identification smart bookshelves in libraries. The antenna is composed of four top-loaded patches sequentially rotated with a phase difference of 90?? and double shorted to the ground. It operates at a center frequency of 0.915 GHz. The impedance bandwidth (SWR < 2) is 26.8%, the axial-ratio (AR) bandwidth (measured AR < 3 dB) is 11.6%, and the 3-dB beamwidth is 115??. The antenna gain is about 4 dBi, and the overall dimension is reduced by ~60% in length, in comparison with that of the conventional sequential patch antenna. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332285 [article] A low-cost printed CP patch antenna for RFID smart bookshelf in library [texte imprimé] / Lau, Pui-Yi, Auteur ; Yung, Kenneth Kin-On, Auteur ; Yung, Edward Kai-Ning, Auteur . - 2011 . - pp. 1583 - 1589. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 5 (Mai 2010) . - pp. 1583 - 1589 Mots-clés : Antenna  array  Circularly  polarized  (CP)  Radio-frequency  identification  (RFID)  antenna  Sequentially  rotated  feeding  Small  patch  antenna  Wide-beamwidth  antenna Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper presents a small wideband circularly polarized patch antenna printed on the low-cost FR-4 material for radio-frequency-identification smart bookshelves in libraries. The antenna is composed of four top-loaded patches sequentially rotated with a phase difference of 90?? and double shorted to the ground. It operates at a center frequency of 0.915 GHz. The impedance bandwidth (SWR < 2) is 26.8%, the axial-ratio (AR) bandwidth (measured AR < 3 dB) is 11.6%, and the 3-dB beamwidth is 115??. The antenna gain is about 4 dBi, and the overall dimension is reduced by ~60% in length, in comparison with that of the conventional sequential patch antenna. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5332285