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依据数值模拟结果研制了一套X波段多模微波喇叭,采用3次变张角喇叭结构,设计要求辐射功率大于3 GW,E面和H面方向图在10 dB范围内等化度良好,10 dB波束宽度为40°。近场冷测结果表明,H面10 dB波束宽度为43°,E面10 dB波束宽度为40°。远场热测结果表明,H面10 dB波束宽度为40°,E面10 dB波束宽度为41°,在初步测试中,通过对比在线测量结果和辐射场测量结果,证明研制的喇叭输出功率达1.3 GW时不会出现击穿现象。
Based on the numerical simulation results, a set of X-band multi-mode microwave loudspeaker was developed. The design of the X-band multi-mode microwave horn with 3 times of variable angle horn design was required. The designed radiation power was greater than 3 GW, and the E and H maps were within 10 dB. The dB beamwidth is 40 °. Near-field cold measurements show that the 10 dB beamwidth on H-plane is 43 ° and the 10 dB beamwidth on E-plane is 40 °. The results of far-field thermometry show that the 10 dB beamwidth of H-plane is 40 ° and the beamwidth of E-plane 10 dB is 41 °. In the preliminary test, the output power of the developed loudspeaker is proved by comparing with the on-line measurement results and the radiation field measurement results 1.3 GW breakdown does not occur when the phenomenon.