Improvement of antenna isolation in hand-held devices using miniaturized electromagnetic band-gap structures
Abstract
Miniaturized electromagnetic band-gap (EBG) structures suitable for hand-held devices at 1.575 and 2.4 GHz frequency bands are presented. To miniaturize the structures, a ceramic substrate with relative permittivity of 82 is used to obtain a period of the order of 2.6–3.5 mm. Simulation results are presented for slotted-patch and two-dimensional (2-D) fork EBGs at 1.575 GHz. Measured results are presented for spiral EBG at 2.4 GHz. Measured data with good isolation and radiation properties validates the concept of proposed EBG structures. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2508–2513, 2007; Published online in Wiley InterScience (www.interscience.wiley.com) DOI 10.1002/mop.22761
