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Performance enhancement of a wideband spiral antenna using a stepped ground plane
Author(s) -
Mohamad Sarah,
Cahill Robert,
Fusco Vincent
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.28156
Subject(s) - ground plane , wideband , spiral antenna , spiral (railway) , bandwidth (computing) , microwave , optics , antenna (radio) , acoustics , engineering , electrical engineering , physics , microstrip antenna , telecommunications , coaxial antenna , mechanical engineering
This study presents the use of a stepped ground plane as a means to increase the gain and front‐to‐back ratio of an Archimedean spiral which operates in the frequency range 3–10 GHz. The backing structure is designed to optimize the antenna performance in discrete 1 GHz bands by placing each of the eight metal steps one quarter wavelength below the corresponding active regions of the spiral. Simulated and experimental results show that this type of ground plane can be designed to enhance the antenna performance over the entire 105% operating bandwidth of the spiral. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:753–757, 2014