This paper presents the silicon based on-chip antenna using a LC resonator. The proposed antenna consists of a stacked capacitor and a spiral inductor on silicon substrate. The spiral inductor structure without underpass was proposed for improvement the performance of the silicon based-antenna. The resonant frequency of the fabricated antenna was measured as 465 MHz. Its return loss was 23.4 dB at resonant frequency. The antenna has a gain of -35.75 dBi due to small size and silicon substrate. However, the fabricated antenna has good performance in the near-field. (C) 2011 Elsevier Ltd. All rights reserved.