Microstrip-Fed Small Slot Antenna with Dual Band-Notched Function for UWB Wireless Communications
Keywords:
L-shaped slit, microstrip-fed slot antenna, T-shaped slot, ultra-wideband communication systemsAbstract
A simple and compact microstrip-fed ultra wideband (UWB) slot antenna with dual band-notch characteristic for UWB applications has been presented. In order to increase the impedance bandwidth of the square slot antenna, we insert a T-shaped slot in the ground plane that with this structure UWB frequency range can be achieved. Additionally, by using a pair of Lshaped slits at the square radiating stub, a dual band-notch performance has been obtained. The measured results reveal that the presented dual band-notch slot antenna offers a wide bandwidth with two notched bands, covering all the 5.2 GHz / 5.8 GHz WLAN, 3.5 GHz / 5.5 GHz WiMAX and 4 GHz C bands. The designed antenna has a small size of 20×20 mm2 . Good return loss and radiation pattern characteristics are obtained in the frequency bands of interest.
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References
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