Thin dual-resonant stacked sho...

thin dual resonant patch antenna_Ollikainen 1999 IEE. Reprinted with permission from Electronics Letters 35, number 6, pages 437-438.

Thin dual-resonant stacked shorted patch antenna for mobile communications
J. Ollikainen, M. Fischer and P. Vainikainen
A novel thin stacked shorted patch antenna for the 1800MHz frequency band is presented. The antenna is dual-resonant and small in size. It has a very low prole and a bandwidth of almost 10%, which is sufcient, for example, for GSM1800 or GSM1900 systems. The radiation pattern of the antenna is suitable for directive cellular handset antenna applications.

Introduction: Short-circuited microstrip patch antennas, or PIFAs, can be used as directive internal handset antennas in various communication systems. They provide advantages over traditional external whip and helix antennas in t