Open AccessA VERY WIDEBAND DIPOLE-LOOP COMPOSITE PATCH ANTENNA WITH SIMPLE FEED
Author(s) -
Kai He,
Peng Fei,
Shuxi Gong
Publication year - 2016
Publication title -
progress in electromagnetics research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.245
H-Index - 33
ISSN - 1937-6480
DOI - 10.2528/pierl16032204
Subject(s) - wideband , loop antenna , composite number , simple (philosophy) , dipole antenna , dipole , antenna (radio) , loop (graph theory) , physics , acoustics , materials science , coaxial antenna , computer science , optics , telecommunications , composite material , mathematics , combinatorics , quantum mechanics , philosophy , epistemology
By combining a horizontal bowtie electric dipole and a vertical rhombic loop antenna which is realized by a pair of folded shorted patches, a very wideband dipole-loop composite patch antenna is designed. Four tuning stubs are attached to the edges of the bowtie dipole to improve the impedance matching. The bowtie dipole and the rhombic loop antenna are excited simultaneously by a simple feed structure which not only forms a folded balun but also makes the antenna itself be direct current grounded. Results show that a wide impedance bandwidth of 121.6% for |S11| < −10 dB from 3.5 to 14.35 GHz is obtained. Good radiation patterns, low back radiation, low cross polarization level, and peak antenna gains of 7.7 to 9.8 dBi are achieved over the operating bands.
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