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Compact Tapered Slot UWB Antenna with WLAN Band Rejection

Medeiros, C. R. ; Costa, J.R. ; Fernandes, C. A.

IEEE Antennas and Wireless Propagation Letters Vol. 8, Nº -, pp. 661 - 664, July, 2009.

ISSN (print): 1536-1225
ISSN (online): 1536-1225

Journal Impact Factor: 1,312 (in 2008)

Digital Object Identifier: 10.1109/LAWP.2009.2022063

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This letter extends the design of a previously proposed uniplanar ultrawideband (UWB) antenna to include within its 3.1–10.6-GHz operation band a rejection of the wireless local area network (WLAN) band near 5.5 GHz. The antenna configuration is based on a combination of two crossed exponentially tapered slots plus a star-shaped slot printed on both sides of a 10-mils dielectric substrate. The band rejection is obtained with the addition of extra slots at the antenna back-face metallization.
The radiation pattern and polarization are very stable over the
entire UWB. Link measurements between two identical antennas
demonstrate low pulse distortion over almost all the solid angle.