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Ultra-Wideband Fermi Antenna Using Microstrip-to-CPS Balun
Dong-Sik WOO Young-Gon KIM Young-Ki CHO Kang Wook KIM
IEICE TRANSACTIONS on Communications
Publication Date: 2010/08/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antennas and Propagation
Fermi antenna, coplanar stripline, broadband antenna, mm-wave, planer balun,
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A new design and experimental results of a microstrip-fed ultra-wideband Fermi antenna at millimeter-wave frequencies are presented. By utilizing a new microstrip-to-CPS balun (or transition), which provides wider bandwidth than conventional planar balun, the design of microstrip-fed Fermi antenna is greatly simplified. The proposed Fermi antenna demonstrates ultra-wideband performance for the frequency range of 23 to over 58 GHz with the antenna gain of 12 to 14 dBi and low sidelobe levels. This design yields highly effective solutions to various millimeter-wave phased-arrays and imaging systems.