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A planar ultrawideband elliptical monopole antenna with reflector for breast microwave imaging
Author(s) -
Latif Saeed,
FloresTapia Daniel,
Pistorius Stephen,
Shafai Lotfollah
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.28244
Subject(s) - microwave imaging , reflector (photography) , microwave , monopole antenna , optics , dipole antenna , planar , physics , bandwidth (computing) , antenna (radio) , materials science , electrical engineering , engineering , telecommunications , computer science , light source , computer graphics (images) , quantum mechanics
A printed elliptical monopole antenna operating at 1–4 GHz frequency for biomedical imaging applications is presented in this article. To reduce the reflection of the microwave signal from breast, glycerin is used as the coupling medium (ε r = 9, σ = 0.4 S/m, tan δ = 0.28) whose electrical properties are close to those of breast tissue. Directional patterns and reduced back radiations are achieved using a reflector. The antenna has wide impedance bandwidth from 1 GHz to over 6 GHz (over 140%), suitable for radar‐based imaging. The antenna demonstrates S 21 > −60 dB from 1 to 4 GHz in the coupling medium. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:808–813, 2014