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A CPW‐fed staircase monopole UWB antenna with band‐notched frequency in the WLAN band
Author(s) -
Kim Sang Joong,
Lee Hyoung Sik,
Kim YoungSik
Publication year - 2007
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.22775
Subject(s) - coplanar waveguide , monopole antenna , j pole antenna , ground plane , stub (electronics) , microwave , electrical impedance , planar , electrical engineering , engineering , transformer , magnetic monopole , offset (computer science) , acoustics , physics , antenna (radio) , telecommunications , computer science , voltage , computer graphics (images) , quantum mechanics , periscope antenna , programming language
Abstract A coplanar waveguide (CPW)‐fed ultra‐wideband staircase monopole antenna with a frequency‐notch characteristic is presented. The proposed antenna consists of a planar four‐step staircase rectangular monopole with a ground short‐circuited stub, open stubs at the ground part, and two‐step impedance transformer at the CPW‐fed line. The impedance bandwidth is increased due to an offset feeding technique and one‐side ground notch. The notched frequency band can be accomplished by means of the method that involves adding open stubs at the ground. The measured results are in good agreement with the simulated ones. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2545–2547, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22775