IOSR Journal of Engineering
RECENTLY, with the rapid development of wireless communication systems for local access networks including Personal Digital Assistants (PDA), portable PCs, and Bluetooth, the need for low profile and compact antenna has been on the rise. The demand was increased day by day in wireless communication, especially for the ULTRA WIDEBAND Applications. Small and effective wireless communication systems are always preferred. Low profile antenna has therefore been a very hot research topic in antenna engineering. UWB(Ultra-Wide Band0 techniques have been paid the most attention for many advantages, such as higher data rates, immunity to multipath cancellation, increased communications operational security and low interference to legacy systems.