2013-01-10
Ultra-Wideband Cavity-Backed Bowtie Antenna for Pattern Improvement
By
Progress In Electromagnetics Research Letters, Vol. 37, 37-46, 2013
Abstract
The design and ultra-wideband performance of a cavity-backed bowtie antenna with the parasitic dipole and parasitic circular ring is presented. Besides the elliptical bowtie dipole and the taper feeding microstrip for obtaining ultra-wideband impedance characteristics, the parasitic dipole and parasitic circular ring to effectively improve the radiation pattern can be used for obtaining the stable broadside unidirectional radiation patterns. An ultra-wideband impedance characteristic of about 118.2% for VSWR ≤ 2 ranging from 2.75-10.7 GHz is achieved. A unidirectional radiation pattern, a stable peak gain of around 7.4-10.8 dBi and low cross polarization over the whole operating band are also produced. A prototype has been fabricated and tested, and the experimental results validate the design procedure.
Citation
Zhi-Ya Zhang, Shaoli Zuo, Xiaolu Zhang, and Guang Fu, "Ultra-Wideband Cavity-Backed Bowtie Antenna for Pattern Improvement," Progress In Electromagnetics Research Letters, Vol. 37, 37-46, 2013.
doi:10.2528/PIERL12110909
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