Open AccessWideband stacked maltese cross‐shaped DR antenna for WiMAX and WLAN applications
Author(s) -
Sharma Abhishek,
Biswas Animesh
Publication year - 2017
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.2016.0367
Subject(s) - omnidirectional antenna , monopole antenna , wideband , coaxial antenna , antenna measurement , electrical engineering , radiation pattern , physics , antenna efficiency , antenna (radio) , dielectric resonator antenna , acoustics , optics , telecommunications , electronic engineering , engineering , resonator
A new maltese cross‐shaped dielectric resonator (DR) antenna is presented and analysed as a wideband radiator. The antenna comprises of maltese cross‐shaped DR, arranged in a stacked configuration and centrally fed by a coaxial probe. The proposed antenna radiates such as an electric monopole, generating omnidirectional linearly polarised fields. Three modes: namely, TM 01 δ , TM 02 δ , and TM 03 δ are simultaneously excited and merged in the composite structure to obtain a wide bandwidth of 59.5% [for voltage standing wave ratio≤2], covering frequency range from 3.15 to 5.82 GHz. The radiation pattern of the proposed antenna is fairly stable throughout the operating band with the measured peak gain varies from 3.27 to 6.09 dBi. A prototype of the proposed antenna is built and tested. Both the simulations and experimental results are presented and discussed. The proposed antenna is suitable candidate for worldwide interoperability for microwave access (3.5 GHz) and wireless local area network (3.65 GHz/4.9 GHz/5 GHz) applications. Moreover, it can also be used for lower European ultra‐wideband frequency band (3.4–5 GHz) applications.