In this paper, a penta-band antenna design using matching network for mobile phone application is proposed. This design is composed of a planar inverted-F antenna (PIFA) and a LC-tank-stacked network. The LC-tank-stacked network consists of two pairs of stacked chip-LC tank, which is parallel with the microstrip line feeding to the antenna. The PIFA works for generating dual bands, and each pair of chip-LC tanks can effectively enhance the lower band and upper band, respectively. According to measured results, the bandwidth can cover 824-960 MHz/1710-2170 MHz band for WWAN application for VSWR = 3:1. The peak antenna gain is better than 0.5 dBi and 3.4 dBi for lower and higher operation band, respectively. And the measured radiation efficiency is about 40-60% and 40-70% lower and higher operation band, respectively.
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