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Design of half elliptical ring monopole antennas with elliptical slot in ground plane for future UWB applications
Author(s) -
Ahmed Osama M. H.,
Elboushi Ayman M.,
Sebak AbdelRazik
Publication year - 2012
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.26449
Subject(s) - ground plane , monopole antenna , return loss , microwave , radiation pattern , microstrip , microstrip antenna , slot antenna , frequency band , antenna (radio) , physics , bandwidth (computing) , wideband , acoustics , optics , engineering , electrical engineering , telecommunications
Abstract In this letter, a microstrip fed ultra‐wideband (UWB) antenna with different band rejection techniques is presented. The designed antennas consist of a defected ground plane with an elliptical slot and elliptical shaped radiating element. The measured and calculated impedance bandwidth of the proposed antenna ranges from 3 to 14 GHz for a return loss (S 11 ) less than −10 dB. Also, it has a relatively stable radiation patterns over its whole frequency band of interest. Two different techniques have been proposed to achieve band‐notch characteristic in the 5.0‐ to 6.0‐GHz wireless local area network frequency band. The first one uses L‐shaped parasitic strip into the radiating patch, whereas the other one uses two rectangular slits cut away from the ground plane creating defected ground structure. The proposed antenna is considered a good candidate for UWB applications. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:181–187, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26449