Bandwidth Enhancement of a Printed Slot Antenna With a Pair of Parasitic Patches

Author

Fan, S.T. ; Yin, Y.Z. ; Lee, B. ; Hu, W. ; Yang, X.

Author_Institution

Nat. Key Lab. of Sci. & Technol. on Antennas & Microwaves, Xidian Univ., Xi´´an, China

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

1230

Lastpage

1233

Abstract

A printed microstrip-line-fed slot antenna with a pair of parasitic patches for bandwidth enhancement is proposed in this letter. By using the parasitic patches along the microstrip feed line, an additional resonance is excited, and a good performance of bandwidth enhancement can be obtained. The proposed antenna is designed and manufactured successfully. The measurement shows a good agreement with the simulation. From the measured results, the enhanced impedance bandwidth, defined by voltage standing wave ratio (VSWR) less than 2, is about 136% ranging from 2.1 to 11.1 GHz. In addition, stable and nearly omnidirectional far-field radiation patterns are observed over the entire operating band.

Keywords

antenna feeds; antenna radiation patterns; microstrip antennas; microstrip lines; slot antennas; VSWR; frequency 2.1 GHz to 11.1 GHz; impedance bandwidth enhancement; omnidirectional far-field radiation patterns; parasitic patches; printed microstrip-line-fed slot antenna; voltage standing wave ratio; Antenna measurements; Bandwidth; Broadband antennas; Microstrip antennas; Slot antennas; Bandwidth enhancement; microstrip-line-fed antenna; parasitic patch; printed slot antenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2224311

Filename

6329392