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UWB Printed Slot Antenna With Bluetooth and Dual Notch Bands

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3 Author(s)
Samadi Taheri, M.M. ; Electr. & Electron. Eng. Dept., Shahed Univ., Tehran, Iran ; Hassani, H.R. ; Nezhad, S.M.A.

A novel technique to add an extra Bluetooth band and dual notch bands simultaneously to a compact ultrawideband (UWB) printed slot antenna is proposed. The UWB slot antenna, covering 3.1-11 GHz, is in the shape of an octagon and is fed by a rectangular patch with a beveled bottom edge. To create an extra band outside the UWB frequency range, centered at the 2.4-GHz Bluetooth band, a quarter-wavelength stub is attached to the high concentrated current area in the ground plane. Two notch bands, centered at 3.5-GHz WiMAX and 5.8-GHz WLAN, are also created by placing two stubs similar to that of the extra band. The proposed antenna has a compact size (23 × 28 mm 2), almost stable radiation pattern, and reflection coefficient of lower than -10 dB across the entire passband. A prototype of the proposed antenna is fabricated, and the measured results are shown to be in good agreement with the simulated results.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:10 )