DESIGN OF PLANAR ANTENNAS FOR WIRELESS APPLICATIONS Planar antennas, including microstrip and printed antennas, metal-plate antennas, ceramic chip and dielectric resonator antennas have a low profile hence, these antennas have extensive applications in mobile systems (such as 900/1800 MHz bands), wireless local area networks (WLANs, such as 2.4/5.2/5.8 GHz bands), ultra-wideband (UWB, such as 3.1 ~ 10.6 GHz band) communications. Wireless antennas are used in GSM, WLAN, MAN, CDMA, Wireless Routers, Mobile Handsets, PDA. We can divide these into 3 main categories. Internal dual-/multi-band mobile phone antennas including PIFAs, very-low-profile monopoles, printed loop antennas, printed slot antennas for mobile phones, PDA or smart phones WLAN mobile-unit antennas, including dual-band and/or diversity operations and the antenna mountable above the system, ground plane of the mobile unit UWB antennas for mobile units and access points, including the design techniques for...