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In this paper, a dual-band dual-polarized crossed dipole antenna with good anti-interference capability is proposed for 2.4-/5-GHz WLAN applications. The proposed antenna covers the WLAN 2.4-GHz band (2.4–2.48 GHz) and 5-GHz bands (5.15–5.85 GHz) with isolation >27 dB for VSWR < 2. Without extra filtering circuit, a band-notch (3.4–3.6 GHz) is achieved by introducing the C-shaped split ring resonator (SRR) into the wideband dipole antenna. Compared with the original wideband dipole antenna, the minimum gain in the notched band is suppressed from 8 to −9 dBi and the gain in the higher band is improved from 6 to 9.7 dBi. The proposed antenna can realize a high gain of 7.85 dBi for the lower band and 9.7 dBi for the higher band. As demonstrations, two reference antennas and the proposed antennas are fabricated and measured, and the measured results agree well with the simulated ones.

Dual-Polarized Band-Notched Antenna Without Extra Circuit for 2.4/5 GHz WLAN Applications