A metamaterial-inspired miniaturized dual-band printed directive dipole antenna for GSM/Bluetooth/WLAN applications

In this paper, a miniaturized design of printed dual-band directive dipole antenna is proposed. Loading with complementary split ring resonators introduces an additional lower-order resonance in the reference directive dipole. This enables the proposed antenna to operate around 1.7 GHz and 2.42 GHz, covering the GSM/Bluetooth/WLAN application bands. Furthermore, defected partial ground structure is employed to improve impedance matching in the lower order CSRR-induced band. Full-wave simulations in Ansys HFSS show that the proposed dual-band antenna has satisfactory far-field gains of 1.83 dBi and 3.76 dBi in the two respective operating bands.