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

Volume

54

Issue

5

fYear

2006

fDate

5/1/2006 12:00:00 AM

Firstpage

1453

Lastpage

1460

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;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2006.874354

Filename

1629274