Open AccessInvestigation on the miniaturization of the microstrip antenna based on the back ward wave property of left-handed medium
Author(s) -
Wu Ming-Feng,
Meng Fan-Yi,
Wu Qun,
Jihuai Wu
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.6368
Subject(s) - miniaturization , broadband , microstrip , wavelength , dielectric , left handed , bandwidth (computing) , optics , microstrip antenna , optoelectronics , materials science , physics , antenna (radio) , telecommunications , computer science , nanotechnology
Based on a left-handed medium (LHM) structure unit with smooth dispersion, broadband property and of electrical small dimensions, a microstrip antenna (MSA) substrate is designed partially loaded by both the LHM and the conventional dielectric medium for the miniaturization of MSAs, in which the backward wave property of LHM is employed to compensate for the phase shift resulting from waves propagating in the conventional dielectric medium. Both the analytical and numerical results demonstrate that the physical dimensions of a 4.70 GHz MSA have been significantly reduced by 37.92%, and can be no longer proportional to the working wavelength, while its bandwidth and gain can be equivalent to that of a conventional MSA. All above results indicate the practical capability of LHM in the miniaturization of MSAs.