Circularly Polarized Square Slot Antenna With a Pair of Inverted-L Grounded Strips

This paper presents a new wideband circularly polarized square slot antenna (CPSSA) with a coplanar waveguide (CPW) feed. The proposed antenna features two inverted-L grounded strips around two opposite corners of the slot and a widened tuning stub protruded into the slot from the signal strip of th...

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Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 7; pp. 149 - 151
Main Authors Sze, Jia-Yi, Chang, Chi-Chaan
Format Journal Article
LanguageEnglish
Published New York IEEE 2008
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antenna feeds
Antenna measurements
Bandwidth
Broadband antennas
Circular polarization (CP)
coplanar waveguide (CPW) feeding
Coplanar waveguides
Impedance measurement
Magnetic resonance
Polarization
Prototypes
Slot antennas
Circular polarization
slot antennas
CPW feeding
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Summary:This paper presents a new wideband circularly polarized square slot antenna (CPSSA) with a coplanar waveguide (CPW) feed. The proposed antenna features two inverted-L grounded strips around two opposite corners of the slot and a widened tuning stub protruded into the slot from the signal strip of the CPW. Broadside circular-polarization (CP) radiation can be easily obtained using a simple design procedure. For the optimized antenna prototype, the measured bandwidth with an axial ratio (AR) of less than 3 dB is larger than 25% and the measured VSWR les 2 impedance bandwidth is as large as 52%.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2008.921341