Title :
A miniature UWB planar monopole antenna with 5-GHz band-rejection filter and the time-domain characteristics
Author :
Cho, Young Jun ; Kim, Ki Hak ; Choi, Dong Hyuk ; Lee, Seung Sik ; Park, Seong-Ook
Author_Institution :
Sch. of Eng., Inf. & Commun. Univ., Daejeon
fDate :
5/1/2006 12:00:00 AM
Abstract :
A planar monopole antenna with a staircase shape and small volume (25times26times1 mm3) 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
Keywords :
antenna radiation patterns; band-stop filters; impedance matching; microwave antennas; monopole antennas; time-frequency analysis; ultra wideband antennas; wireless LAN; 5 GHz; UWB planar monopole antenna; WLAN band; band-rejection filter; electrical characteristics; frequency domain analysis; half-bowtie radiation element; impedance bandwidth; omnidirectional radiation pattern; time-domain characteristics; ultrawideband system; wireless local area network; Antenna measurements; Antenna radiation patterns; Bandwidth; Delay; Filters; Impedance measurement; Shape; Time domain analysis; Ultra wideband antennas; Wireless LAN; Group delay; short pulse characteristics; time domain characteristics; ultrawideband (UWB); ultrawideband (UWB) antenna;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.874354
