Open AccessWideband omnidirectional printed dipole antenna with dumbbell‐shaped open sleeve for wireless communication applications
Author(s) -
Zhang ZhiYa,
Yang Xiaodong,
Zuo ShaoLi,
Fu Guang
Publication year - 2014
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2014.0257
Subject(s) - omnidirectional antenna , wideband , standing wave ratio , umts frequency bands , dipole antenna , impedance matching , dumbbell , bandwidth (computing) , radiation pattern , electrical engineering , dipole , wireless , acoustics , physics , electrical impedance , materials science , computer science , antenna (radio) , electronic engineering , engineering , telecommunications , microstrip antenna , medicine , physical therapy , quantum mechanics
The wideband performance of a printed dipole antenna with dumbbell‐shaped open sleeve structure is presented. Besides using printed dipole for omndirectional radiation patterns, the dumbbell‐shaped open sleeve structure is employed to improve the impendence matching at lower band because of producing two resonant points; whereas two parasitical patches are also used to increase the bandwidth of the lower band. The four tuning stubs and the coupling feed can effectively enhance the impendence bandwidth at upper band. A wideband impedance characteristic of about 91.4% for voltage standing wave ratio (VSWR) ≤ 2 ranging from 0.89 to 2.39 GHz is obtained. The omnidirectional radiation patterns in the whole operation bands are achieved where the un‐roundness in the H ‐plane is <2.2 dB. It is sufficient for accommodating recent wireless communication services such as GSM900, DCS1800, PCS1900, UMTS, IMT2000 and Wibro.