Abstract
This paper shows a compact planar dual-band slot antenna for access point (AP) application. The proposed slot antenna fabricated on a low cost FR-4 substrate has a small size of 40 × 40 × 0.8 mm3. By inserting a pair of spiral-shaped strips, two resonant bands are excited. The proposed T-shaped tuning stub achieves high-band input impedance matching and increases the bandwidth of high-band. The return loss of the proposed design exhibits that two wide operating bands are over the bandwidths of 7.4% at center frequency of 2445 MHz and 34% at center frequency of 5484 MHz, respectively. The two resonant bands of the prototype show the broadside radiation patterns with the antenna efficiency of 54% and 85%, respectively.
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