Unidirectional Dual-Band CPW-Fed Antenna Loaded with an AMC Reflector | Zendy

Qun Luo | Zendy; Huiping Tian | Zendy; Zhitong Huang | Zendy; Xudong Wang | Zendy; Zheng Guo | Zendy; Yuefeng Ji | Zendy

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Unidirectional Dual-Band CPW-Fed Antenna Loaded with an AMC Reflector

Author(s) -

Qun Luo,

Huiping Tian,

Zhitong Huang,

Xudong Wang,

Zheng Guo,

Yuefeng Ji

Publication year - 2013

Publication title -

international journal of antennas and propagation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.282

H-Index - 37

eISSN - 1687-5877

pISSN - 1687-5869

DOI - 10.1155/2013/875281

Subject(s) - reflector (photography) , conductor , optics , ground plane , multi band device , coplanar waveguide , bandwidth (computing) , antenna (radio) , perfect conductor , radiation , dielectric , materials science , optoelectronics , electrical engineering , engineering , physics , telecommunications , microwave , light source , composite material , scattering

A unidirectional dual-band coplanar waveguide fed antenna (DB-CPWFA) loaded with a reflector is presented in this paper. The reflector is made of an electric ground plane, a dielectric substrate, and artificial magnetic conductor (AMC) which shows an effective dual operational bandwidth. Then, the closely spaced AMC reflector is employed under the DB-DPWFA for performance improvement including unidirectional radiation, low profile, gain enhancement, and higher front-to-back (F/B) ratio. The final antenna design exhibits an 8% and 13% impedance bandwidths for 2.45 GHz and 5.8 GHz frequency regions, respectively. The overall gain enhancement of about 4 dB is achieved. The F/B ratio is approximate to 20 dB with a 16 dB improvement. The measured results are inconsistent with the numerical values. The presented design is a suitable candidate for radio frequency identification (RFID) reader application

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