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Journal
ofShanghaiUniversity(EnglishEdiSon),2007,11(6):576-579
Digital 11741·007-0610-2
ObjectIdentifier(DOI):101007/s
wideband slotantenna
Compact cavity-backed
LIANG Shun
Xian-ling(粱仙灵),ZHONGshi(钟顺时)
SchoolofCommunicationandInformation RChina
Engineering,ShanghaiUniversity,Shanghai200072,P
AbstractAwideband slotantenna inthe is
nltrarhigh
cavity-baRked operated frequency(UHF)band
antennahasa structureandlow withtilesizeratiooftile totheslot 1.6:1Themeasured
compact profile groundplane only
bandwidthof achieves85 a from390MHzto970MHzThemeasured
impedance VSWR≤3 3%.coveringfrequencyrange
isabout55~7.5dB.
gain
slot
Keywords
antenna,wideband,compact,ultrahighfrequency(UHF).
1 Introduction antennaisshownin A slotof
Fig.1. rectangular
and cutona
lengthL2 width%is groundplane
The slotantennashavefound
microstrip-fed appli-ofsize aninverted mi-
L】xm,with II-shaped
to
cationsinradarandcommunicationdue
systems feed ofthree stubsofthe
crostripcomposed tuning
as
variousfeaturessuchwide bmldwidth.
impedaLIce re-
smilewidthw=5
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