A planar hexa-band internal antenna designed for mobile phone applications is presented.The antenna occupying a small area of 45 × 12 mm 2 is placed on the top no-ground portion of the system circuit board with a ground-plane size of 45 × 100 mm 2 .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.
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Sze et al. (2010) studied this question.
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