【摘要】：針對(duì)S波段長(zhǎng)脈寬、大工作比正交場(chǎng)放大器應(yīng)用需求,仿真優(yōu)化了短管支撐曲折線慢波結(jié)構(gòu)的色散及耦合阻抗特性,提出了輸能結(jié)構(gòu)改進(jìn)方案,對(duì)高頻系統(tǒng)進(jìn)行了優(yōu)化設(shè)計(jì),仿真結(jié)果與冷測(cè)結(jié)果具有較好一致性,冷測(cè)結(jié)果表明,該設(shè)計(jì)實(shí)現(xiàn)了高頻系統(tǒng)的寬頻帶及高效率。首次采用99.5%細(xì)晶氧化鋁陶瓷作為控制極與陰極間絕緣介質(zhì),解決了絕緣組件大平均電流下?lián)舸﹩?wèn)題。首次采用固態(tài)放大器和二級(jí)正交場(chǎng)放大器搭建了三級(jí)放大鏈測(cè)試系統(tǒng),實(shí)現(xiàn)了S波段正交場(chǎng)放大器大工作比測(cè)試,熱測(cè)結(jié)果表明,在脈沖寬度300μs、工作比8%條件下,該放大器在300 MHz帶寬內(nèi)脈沖功率大于250 kW,平均功率大于20 kW,全帶寬內(nèi)效率大于52%,該放大器使S波段大功率正交場(chǎng)放大器技術(shù)水平邁上了新臺(tái)階,也是當(dāng)前國(guó)際上脈沖寬度最寬、工作比最大的正交場(chǎng)放大器產(chǎn)品。
[Abstract]:According to the application requirement of S-band long pulse width and large working ratio orthogonal field amplifier, the dispersion and coupling impedance characteristics of short tube braced zigzag line slow-wave structure are simulated and optimized. An improved scheme of energy transmission structure is proposed, and the design of high frequency system is optimized. The simulation results are in good agreement with the cold test results. The cold test results show that the design realizes the wide band and high efficiency of the high frequency system. For the first time, 99.5% fine-grained alumina ceramic is used as the dielectric between the control pole and the cathode, which solves the breakdown problem of the insulating module under the large average current. For the first time, a three-stage amplifier chain testing system is constructed by using solid-state amplifier and two-stage orthogonal field amplifier. The large working ratio test of S-band orthogonal field amplifier is realized. The results of thermal measurement show that under the condition of 300 渭 s pulse width and 8% working ratio, The amplifier has a pulse power of more than 250kW, an average power of more than 20kW, and a full bandwidth efficiency of more than 52kW. The amplifier has raised the technical level of the S-band high-power orthogonal field amplifier to a new level, and is also the widest pulse width in the world at present. Maximum operating ratio of orthogonal field amplifier products.
【作者單位】： 中國(guó)電子科技集團(tuán)公司第十二研究所;美國(guó)普林斯頓大學(xué);
【分類號(hào)】：TN722

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