Investigations into printed monopole antennas for ultra-wideband applications

Author

Padhi, S.K. ; Zagriatski, S. ; Crozier, Stuart ; Bialkowski, Marek E.

Author_Institution

Sch. of Inf. Technol. & Electr. Eng., Queensland Univ., St. Lucia, Qld., Australia

fYear

2005

fDate

3-8 July 2005

Firstpage

651

Abstract

The paper reports an investigation into various designs of printed planar monopole antennas for UWB applications. Three different designs (designated Ant I, Ant II and Ant III) have been chosen and investigated. Ant I uses a straight feed line, while Ant II and Ant III use a tapered feed line. The taper length and angle have been optimized with HFSS. Ant II and Ant III, with the tapered section, exhibit wider bandwidth. The calculated radiation patterns are omnidirectional in the horizontal plane at 3.0 GHz and 7 GHz. However, at higher frequencies they exhibit more ripple. The results indicate that antennas Ant II and Ant III are more suitable for UWB applications than the original printed planar monopole antenna, Ant I. One of the envisaged applications is in the field of medical imaging. The reason is their fully planar format, which makes them more suitable for UWB microwave applicators.

Keywords

antenna feeds; antenna radiation patterns; microstrip antennas; monopole antennas; ultra wideband antennas; 3.0 GHz; 7 GHz; UWB antennas; medical imaging; microwave applicators; planar monopole antennas; printed monopole antennas; radiation patterns; straight feed line; tapered feed line; ultra-wideband applications; Antenna feeds; Antenna measurements; Antenna radiation patterns; Bandwidth; Broadband antennas; Dielectric substrates; Dipole antennas; Frequency; Ultra wideband antennas; Ultra wideband technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2005 IEEE

Print_ISBN

0-7803-8883-6

Type

conf

DOI

10.1109/APS.2005.1551895

Filename

1551895