Compound techniques for broadening the bandwidth of microstrip patch antenna

Author

Liu, Ting-Hua ; Zhang, Wen-Xun

Author_Institution

NRIET, Nat. Lab. of Antenna & Microwave Technol., Nanjing, China

Volume

1

fYear

1997

fDate

2-5 Dec 1997

Firstpage

241

Abstract

By using compound techniques to broaden the bandwidth of a microstrip patch, a new type of stacked microstrip patches antenna which increases the frequency bandwidth significantly is investigated. When the feed point is placed at the common symmetric line of upper and lower patches, by means of controlling the relative patch dimensions and moving the upper patch along the symmetric line; adding two pairs of parasitic conducting bars around the lower patch; and loading a capacitive disk on the feed probe to match its proper inductance, a good result for the frequency bandwidth of about 21% for voltage standing-wave ratio (VSWR) of 2 or less in the L-band (1.2-1.4 GHz) and low cross-polar level in radiation pattern is obtained

Keywords

antenna feeds; antenna radiation patterns; microstrip antennas; 1.2 to 1.4 GHz; L-band; UHF antenna; VSWR; bandwidth broadening; capacitive disk load; compound techniques; feed probe; low cross-polar level; microstrip patch antenna; parasitic conducting bars; radiation pattern; stacked microstrip patches; voltage standing-wave ratio; Bandwidth; Bars; Feeds; Frequency; Inductance; Microstrip antennas; Patch antennas; Pattern matching; Probes; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings, 1997. APMC '97, 1997 Asia-Pacific

Print_ISBN

962-442-117-X

Type

conf

DOI

10.1109/APMC.1997.659349

Filename

659349