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 communicationsJ. Ollikainen, M. Fischer and P. VainikainenA 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……
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