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One‐turn stub‐loaded loop patch antenna on a small ground plane
Author(s) -
Thaysen J.,
Jakobsen K. B.
Publication year - 2005
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.20745
Subject(s) - ground plane , stub (electronics) , patch antenna , bandwidth (computing) , rlc circuit , loop antenna , microwave , physics , microstrip antenna , optics , electrical engineering , engineering , antenna (radio) , antenna factor , telecommunications , voltage , capacitor
A small 1.1‐cm 3 one‐turn loop patch antenna located 2.5 mm above an 18 × 25 mm ground plane separated by a dielectric substrate with relative permittivity of 9.8 is presented. By varying the length of a thin quarter‐wavelength matching line, it is possible to change the resonant frequency. An RLC circuit model is used to determine the minimum quality factor Q . It is shown that the proposed loop yields a bandwidth performance close to the theoretical limit. The antenna has a 14.5% bandwidth at the resonant frequency of 2.04 GHz. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 126–128, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20745