Abstract
Impedance and radiation characteristics of a 2.4-GHz compact shorted-patch antenna in close proximity to a lossy medium are investigated. In this study, a lossy medium with permittivity and conductivity close to those of a human torso or arm at 2.4 GHz is studied. The results obtained show that the antenna can still provide acceptable operating bandwidth (> 84 MHz covering the 2.4-GHz WLAN band) and efficiency (> 60%) when the antenna is placed very close (1-mm spacing only) to the lossy medium. The results indicate that the compact shorted-patch antenna studied is promising for application as a body-worn antenna on the body. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 480–483, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20858
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