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A novel thin stacked shorted patch antenna for the 1800 MHz frequency band is presented. The antenna is dual-resonant and small in size. It has a very low profile and a bandwidth of almost 10%, which is sufficient, for example, for GSM1800 or GSM1900 systems. The radiation pattern of the antenna is suitable for directive cellular handset antenna applications.
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Ollikainen et al. (1999) studied this question.
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