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Compact Printed Dual-Dipole Antenna with a New T-Shaped Feeding Structure for Dual Broadband Operation

A compact, cost-effective printed dual-dipole antenna with a new T-shaped feeding structure for dual broadband operation is presented in this work. The proposed antenna is formed by connecting in parallel two center-fed folded dipoles by coplanar strip and is fed through aT-shaped coupling structure. For verification, a prototype antenna for 2.4- and 5-GHz wireless local area network bands is designed, fabricated, and tested. The bandwidths achieved are 46.3% and 14.5% at the 2.4- and 5-GHz bands, respectively.