This paper presents a design of wireless broadband (WiBro)-multi-input multi-output (MIMO) and personal communica- tion service (PCS) antenna for practical mobile phone. To decrease the mutual coupling of WiBro-MIMO antenna, it is considered on the projected ground structure. In addition, two type PCS antennas for multi-function mobile phone are designed. The proposed antennas are well resonated in each operating frequency band. The measured band- widths of 3-dimensional (3D) and 2-dimensional (2D) PCS antennas are 110 MHz and 130 MHz below −10 dB, respectively. The isolations between WiBro-MIMO and two PCS antenna are below −15 dBby 2D antenna type and −20 dBby 3D antenna type, respectively. The printed IFA has shown a better performance than modified planner IFA with spiral and shorting strip.
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Min et al. (2008) studied this question.
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