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Improved band‐notch techniques for miniature UWB CPW‐fed slot antenna
Author(s) -
NaserMoghadasi Mohammad,
Asadpor Loghman
Publication year - 2014
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.28118
Subject(s) - standing wave ratio , ground plane , antenna (radio) , radiation pattern , patch antenna , band rejection , electrical engineering , aperture (computer memory) , microwave , electronic engineering , engineering , microstrip antenna , acoustics , telecommunications , physics
This article describes a compact ultrawideband (UWB) antenna that exhibits desirable band‐notch and gain characteristics. The antenna consists of a rectangular aperture etched on a printed circuit board's ground plane that is excited by a rectangular‐shaped patch. It uses a novel technique comprising of open‐end stubs at the periphery of the ground in the vicinity of the feed‐line to improve its voltage standing wave ratio (VSWR) performance across the UWB. The proposed antenna uses three techniques to provide band‐notch function necessary to eliminate the wireless local‐area network interfering signals between 5 and 6 GHz. The frequency of the band‐notch characteristic can be tuned by varying the parameters defining the notch structure. The antenna was fabricated and its performance measured to validate its feasibility including the band‐notch techniques. A compact 19 × 19 mm 2 antenna with aperture area of 9 × 18 mm 2 was realized that exhibits an excellent VSWR performance and stable radiation patterns across the UWB spectrum. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:408–415, 2014