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Three antennas for Wi-Fi 802.11n applications are presented. The first antenna is a dual-band antenna operating at the 2.4 GHz and the 5.5 GHz bands. This antenna is conceived from the zero-order resonating wire metamaterial antenna. By making a judicious choice for the capacitances and inductances of zero-order mode antenna, the new metamaterial-inspired wire antenna can resonate at two distinct frequencies. The simulated gain is 2 dBi and 4 dBi at lower and upper band, respectively. The two others designed antennas are the compact folded monopole antenna with 0.5 dBi gain, and the compact folded dipole antenna with 2 dBi gain. They were simulated using CST Microwave Studio full-wave simulator and measured.