Js. Colburn et Y. Rahmatsamii, PRINTED ANTENNA PATTERN IMPROVEMENT THROUGH SUBSTRATE PERFORATION OF HIGH DIELECTRIC-CONSTANT MATERIAL - AN FDTD EVALUATION, Microwave and optical technology letters, 18(1), 1998, pp. 27-32
This paper examines the concept of using an array of holes in a substr
ate for antenna performance improvement The finite-difference time-dom
ain (FDTD) numerical technique is used to demonstrate the utility of t
he concept. The results clearly show the substantial radiation perform
ance improvement of printed antennas by lowering/controlling the effec
tive dielectric constant of a substrate by perforating it with an arra
y of holes. (C) 1998 John Wiley & Sons, Inc.