Abstract
Two printed monopole antennas have been proposed and experimentally studied. The dual-band or triple-band operation for Bluetooth and WLAN applications is achieved by the printed T-shaped or inverted L-shaped monopole antenna coupling with a shorted inverted-L wire. For both of them, the antenna's impedance bandwidths in the operating bands meet the bandwidth requirements for applications in Bluetooth and WLAN systems. From the experimental results, the inverted L-shaped monopole antenna with a shorted inverted-L wire can have not only an impedance match with a return loss of better than 10 dB for an application to cover the 2.45/5.2/5.8 GHz bands, but also a smaller size than the other.
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