Design and implementation of planar ultra-wideband antennas with multiple notched bands based on stepped impedance resonators

Author

Zhang, Ye ; Hong, Wei ; Yu, Chu ; Zhou, J.-Y. ; Kuai, Z.-Q.

Author_Institution

State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing, China

Volume

3

Issue

7

fYear

2009

fDate

10/1/2009 12:00:00 AM

Firstpage

1051

Lastpage

1059

Abstract

A new family of microstrip-fed ultra-wideband (UWB) antennas with multiple (triple/quadruple) notched bands is proposed. The notched bands are generated by a band notched filter composed of double stepped impedance resonators (SIRs). Through tuning the characteristic impedance and the electrical length of each section of the SIRs, multiple notched bands as well as the desired high attenuation can be created in desired frequencies. Frequency domain measurements have been conducted to examine the band notched characteristics of the proposed antennas. Based on the analysis of antenna transfer function (S21), group delay and gain of the proposed antenna, it is shown that the proposed antenna is suitable for UWB applications or for multi-band applications.

Keywords

antenna feeds; frequency-domain analysis; microstrip antennas; microstrip filters; multifrequency antennas; notch filters; planar antennas; resonators; transfer functions; ultra wideband antennas; antenna transfer function; band notched filter; double stepped impedance resonators; frequency domain measurement; group delay; microstrip-fed UWB antennas; multiband antenna design; multiple notched band; multiple notched bands; planar ultra-wideband antennas;

fLanguage

English

Journal_Title

Microwaves, Antennas & Propagation, IET

Publisher

iet

ISSN

1751-8725

Type

jour

DOI

10.1049/iet-map.2008.0233

Filename

5256100