發(fā)布時(shí)間：2019-05-11 10:54

【摘要】：基于三級(jí)級(jí)聯(lián)模式,通過在漂移段采用切斷方式、在預(yù)群聚段和輻射段采用光子晶體加載所需模式,利用CST對(duì)太赫茲波段光子晶體曲折波導(dǎo)慢波結(jié)構(gòu)的高頻特性作了模擬計(jì)算。計(jì)算結(jié)果表明:在f=225 GHz處,光子晶體加載曲折波導(dǎo)慢波結(jié)構(gòu)有較平緩的色散關(guān)系,耦合阻抗為3.7Ω;當(dāng)工作電壓為13 kV、電流為56 mA、電子注半徑為0.09 mm時(shí),慢波結(jié)構(gòu)在輸入功率為5 mW情況下在f=225 GHz處具有30.4 d B的增益;與相同條件下的普通曲折波導(dǎo)慢波結(jié)構(gòu)相比,頻帶顯著變寬,輸出功率增大1.4倍。
[Abstract]:Based on the three-stage cascade mode, the high frequency characteristics of the zigzag waveguide slow wave structure in terahertz band are simulated by CST by using the mode of cutting off in the drift section and the mode of photonic crystal loading in the pre-cluster segment and the radiation section. The results show that the slow wave structure of photonic crystal loaded zigzag waveguide has a gentle dispersion relation at f 鈮，

本文編號(hào)：2474434