TY - JOUR
T1 - Waveguide fed broadband millimeter wave short backfire antenna
AU - Qu, Shi-Wei
AU - Ng, Kung Bo
AU - Chan, Chi Hou
PY - 2013
Y1 - 2013
N2 - A broadband millimeter-wave short backfire antenna (SBA), excited by a bowtie dipole and fed by an E-band rectangular waveguide, is presented in this paper. Its subreflector is replaced by two simple strips printed on the opposite sides of the same supporting substrate of the bowtie exciter for ease and accuracy of fabrication. For reference of practical designs, detailed parametric studies are performed in this paper. Measurements and simulations show that the proposed antenna can feature an improved operating bandwidth and broadside gain compared to the previously reported conventional SBAs. The measured impedance bandwidth for SWR 2 is 57%, from 55.7 to 100 GHz, in which the measured broadside gain is from 13.8 to 18.5 dBi with the peak gain at 85 GHz. Finally, high illumination efficiency of the bowtie exciter is highlighted by comparisons with a straight dipole excited SBA. © 1963-2012 IEEE.
AB - A broadband millimeter-wave short backfire antenna (SBA), excited by a bowtie dipole and fed by an E-band rectangular waveguide, is presented in this paper. Its subreflector is replaced by two simple strips printed on the opposite sides of the same supporting substrate of the bowtie exciter for ease and accuracy of fabrication. For reference of practical designs, detailed parametric studies are performed in this paper. Measurements and simulations show that the proposed antenna can feature an improved operating bandwidth and broadside gain compared to the previously reported conventional SBAs. The measured impedance bandwidth for SWR 2 is 57%, from 55.7 to 100 GHz, in which the measured broadside gain is from 13.8 to 18.5 dBi with the peak gain at 85 GHz. Finally, high illumination efficiency of the bowtie exciter is highlighted by comparisons with a straight dipole excited SBA. © 1963-2012 IEEE.
KW - Backfire antennas
KW - bowtie antennas
KW - broadband antennas
KW - cavity backed antennas
KW - millimeter wave
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U2 - 10.1109/TAP.2012.2232267
DO - 10.1109/TAP.2012.2232267
M3 - RGC 21 - Publication in refereed journal
SN - 0018-926X
VL - 61
SP - 1697
EP - 1703
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 4
M1 - 6375762
ER -