A Dual-Band Slotted Trapezoidal Inverted-F Antenna for Indoor Wlan Communications

Abstract

Abstract-This letter presents a new directional dual-band slotted trapezoidal inverted-F antenna (IFA) for indoor Wireless Local Area Network (WLAN) applications. The dual-band performance can be obtained by tuning the lengths of the inner symmetrical trapezoidal slots and the outer trapezoidal arms in a nearly independent manner. The measured results show that the proposed antenna can provide two separate impedance bandwidths (return loss better than 10 dB) around 180 MHz and 750 MHz for 2.4/5.1-5.8 GHz WLAN bands, respectively. Good radiation performance and roughly constant in-band antenna directivities are also observed.

Ring Slotted Circularly Polarized U-Shaped Printed Monopole Antenna for Various Wireless Applications

“…A tapered printed structure attached to U-slot reported in [16] to achieve WLAN dual frequency bands. In [17], a directional dual band performance obtained by tuning the lengths of the inner symmetrical trapezoidal slots and the outer trapezoidal arms.…”