Title :
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
fDate :
7/4/1905 12:00:00 AM
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;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2224311
