Yuan Zhang, Dongjun Wang, Lewu Deng, Lei Zhang, Xuedi Yuan, Yu Long
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Broadband Dielectric-Loaded Horn Antenna with Enhanced Gain for 1-18 GHz EMC Applications
Dual ridged waveguide horn antennas (DRGH) are widely used in antennas and EMC testing systems as feeder and standard antennas respectively. However, traditional 1-18 GHz DRGH antennas have beam splitting above 12GHz. In this paper, not only the waveguide section and the ridge curve are optimized, and the higher order modes is eliminated, but also the phase distribution of the DRGH antenna interface is further optimized by Dielectric-Loaded to improving the antenna aperture efficiency. The final design of the DRGH antenna size is 242mm×136 mm×189 mm, the gain is 7.16 dBi at 1 GHz, 16 dBi at 9.5 GHz, 19.5 dBi at 18 GHz.
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