%0 Journal Article %T A Compact Planar Hexa-Band Internal Antenna for Mobile Phone %A Jia-Yi Sze %A Yi-Feng Wu %J PIER %@ 1070-4698 %D 2010 %I %R 10.2528/PIER10020603 %X A planar hexa-band internal antenna designed for mobile phone applications is presented. The antenna occupying a small area of 45กม12 mm is placed on the top no-ground portion of the system circuit board with a ground-plane size of 45กม100 mm. The design begins with constructing a meandered monopole. With a parasitic and an impedance-adjustment structure subsequently added, the resulting antenna can be viewed as a printed planar inverted-F antenna with a parasitic resonant element. Two wide impedance bands can be generated by the designed antenna to support GSM 850, GSM 900, DCS, PCS, UMTS, and 2.4-GHz WLAN operations. The measurement was found to agree reasonably well with the simulation. Design procedures and rules along with the design concepts behind are all presented in detail. %U http://www.jpier.org/pier/pier.php?paper=10020603