渡越时间振荡器的注入式锁相研究
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- 英文论文题名：Injection Phase-Locking of a Transit-Time Oscillator
- 论文作者：练琳 ; 贺军涛 ; 令钧溥 ; 戚祖敏
- 英文论文作者：LIAN Lin ; HE Jun-tao ; LING Jun-pu ; QI Zu-min ; College of Optoelectronic Science and Engineering ; National University of Defence Technology
- 年：2014
- 作者机构：国防科学技术大学光电科学与工程学院;
- 论文关键词：注入式锁相 ; 渡越时间振荡器 ; 高功率微波
- 英文论文关键词：injection phase-locking ; transit-time oscillator ; high-power microwave
- 会议召开时间：2014-07-21
- 会议录名称：2014年全国电磁兼容与防护技术学术会议论文集（上）
- 语种：中文
- 分类号：TN752
- 学会代码：WBXB
- 会议名称：2014年全国电磁兼容与防护技术学术会议
- 会议地点：中国湖南常德
- 主办单位：中国电子学会微波分会、中国工程物理研究院复杂电磁环境科学与技术重点实验室、总装备部电磁兼容及防护技术专业组、天线与微波技术重点实验室
- 学会名称：《微波学报》编辑部
- 页数：3
- 文件大小：2191k
- 原文格式：D
- 会议级别：全国
摘要
针对空间功率合成中多个微波源的锁相问题,设计了一种带有注入结构的Ku波段同轴渡越时间振荡器。在输入腔与三腔结构的调制腔之间,加入了效率99.9%以上的反射腔以防止功率向输入腔和发射端泄露。射频信号沿磁场方向注入同轴波导,既保证了磁场线圈的连续,又抑制了器件中的不对称模式。粒子模拟结果表明,当注入比为0.1、频率差为67MHz时可实现锁相。研究还发现,高功率的注入信号能使器件提前饱和,并且得到更高的输出功率。另外,相比Adler经典锁相理论,仿真结果得到了更大的锁相范围。
To realize phase-locking of high power microwave(HPM) sources for the purposes of spatial power combining, a Ku-band coaxial transit-time oscillator(TTO) with an injection structure is investigated. Between the input cavity and the trinal-cavity buncher, a reflector with reflection efficiency of 99.9% is introduced to prevent the leakage power propagating to the input cavity and the cathode. The RF signal is injected into the input cavity through a coaxial waveguide along the guiding magnet, which avoids separating the magnet coils, and suppresses the asymmetric modes excited in the device. Particle-in-cell(PIC) simulation results indicate that when the injection power ratio ρ is 0.1, the phase-locking is achieved for a frequency difference of 67 MHz. It has also been found that the injected signal of higher power results in higher output power and earlier saturation. Moreover, a wider locking bandwidth is expected by the results than that obtained by the Adler's condition.
To realize phase-locking of high power microwave(HPM) sources for the purposes of spatial power combining, a Ku-band coaxial transit-time oscillator(TTO) with an injection structure is investigated. Between the input cavity and the trinal-cavity buncher, a reflector with reflection efficiency of 99.9% is introduced to prevent the leakage power propagating to the input cavity and the cathode. The RF signal is injected into the input cavity through a coaxial waveguide along the guiding magnet, which avoids separating the magnet coils, and suppresses the asymmetric modes excited in the device. Particle-in-cell(PIC) simulation results indicate that when the injection power ratio ρ is 0.1, the phase-locking is achieved for a frequency difference of 67 MHz. It has also been found that the injected signal of higher power results in higher output power and earlier saturation. Moreover, a wider locking bandwidth is expected by the results than that obtained by the Adler's condition.
引文
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[4]Fazio M.V,J.Kinross-Wright,B.Haynes,et al.The Virtual Cathode Microwave Amplifier Experiment[J].J.Appl.Phys,1989,66(6):2675-2677.
[5]Teng Y,Song W,Sun J,et al.Phase locking of high power relativistic backward wave oscillator using priming effect[J].J.Appl.Phys,2012,111:1-4.
[6]Cao Y.B,et al.A low-impedance transit-time oscillator without foils[J].Phys.Plasmas,2009,16(083102):1-6.
[7]Tarakanov V.P.User’s Manual for Code KARAT.Berkeley Research Associate,Springfield,1998.
[8]曹亦兵.基于渡越辐射新型高功率微波源的研究[D].长沙:国防科学技术大学,2008:9-16.
[9]Adler R.A Study of Locking Phenomena in Oscillators[J].Proc.IRE,1946,34:351-357.
[2]Gunin A.V.Relativistic Three-centimeter Backward wave Tube with 3GW Pulse Power[J].Russian Physics Journal,1996,39(12).
[3]Benford J,H.Sze,W.Woo,et al.Phase Locking of Relativistic Magnetrons[J].Phys.Rev.Lett,1989,65(12):5185-5189.
[4]Fazio M.V,J.Kinross-Wright,B.Haynes,et al.The Virtual Cathode Microwave Amplifier Experiment[J].J.Appl.Phys,1989,66(6):2675-2677.
[5]Teng Y,Song W,Sun J,et al.Phase locking of high power relativistic backward wave oscillator using priming effect[J].J.Appl.Phys,2012,111:1-4.
[6]Cao Y.B,et al.A low-impedance transit-time oscillator without foils[J].Phys.Plasmas,2009,16(083102):1-6.
[7]Tarakanov V.P.User’s Manual for Code KARAT.Berkeley Research Associate,Springfield,1998.
[8]曹亦兵.基于渡越辐射新型高功率微波源的研究[D].长沙:国防科学技术大学,2008:9-16.
[9]Adler R.A Study of Locking Phenomena in Oscillators[J].Proc.IRE,1946,34:351-357.