期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 54, 期 5, 页码 1453-1460出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2006.874354
关键词
roup delay; short pulse characteristics; time domain characteristics; ultrawideband (UWB); ultrawideband (UWB) antenna
A planar monopole antenna with a staircase shape and small volume (25 x 26 x 1 mm(3)) is proposed in this paper. With the use of a half-bowtie radiating element, the staircase-shape, and a modified ground plane structure, the proposed antenna has a very wide impedance bandwidth measured at about 11.6 GHz (2.9-14.5 GHz, bandwidth ratio about 1:5) below VSWR 2 including the WLAN band notched in the vicinity of 5 GHz. An omnidirectional radiation pattern is obtained. The group delay which is an indication of linearity between two proposed antennas is less than 1 ns. The electrical characteristics in terms of frequency and time domains and physical ones of the proposed antenna make it attractive for use in ultrawideband (UWB) systems.
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