摘要
Abstract
This study designs an X-band circularly polarized high-power high-gain feed suitable for compact high-power microwave effect platforms,so as to meet the compactness requirements of high-power microwave effect platforms and reduce the bulky size and structure complexity of the traditional high-power microwave feeds.The feed design is completed by fundamental theoretical analysis and electromagnetic simulation optimization.In the design,an elliptical waveguide circular polarizer is adopted to convert the microwave source from linear polarization to circular polarization,a novel smooth-walled horn with quasi-Gaussian field radiation is designed based on mode-matching theory,and an aspheric dielectric lens is introduced to improve the feed's directivity and gain,ultimately achieving high-power high-gain circularly polarized microwave radiation.To verify the effectiveness of the design,the feed tests were conducted in a microwave anechoic chamber.The results show that the feed achieves a far-field gain of 28.4 dB at X-band frequencies,exhibiting excellent radiation directivity.The reflection coefficient S11 is approximately-29.62 dB,indicating good impedance matching.Additionally,the axial ratio for circular polarization exceeds 0.9,demonstrating that the designed high-power,high-gain circularly polarized feed meets the requirements of compact high-power microwave effect platforms.关键词
圆极化/高功率微波/光壁喇叭/模式匹配法/介质透镜/X波段Key words
circular polarization/high-power microwave/smooth-walled horn/mode-matching method/dielectric lens/X-band分类
信息技术与安全科学
