CAJ | 학술논문

注入锁频技术是实现多只磁控管相干功率合成的关键技术。对 S波段1 kW连续波磁控管输出信号频谱的改善进行研究，分析了灯丝电流对磁控管输出特性的影响，通过降低灯丝电流使磁控管自由振荡下的输出微波频带宽度由10 MHz降低至300 kHz。通过提高参考信号的注入功率，有效地拓展了连续波磁控管的注入锁频带宽，最终获得了高达14 MHz的注入锁频带宽。在不同注入功率比的情况下，该连续波磁控管的外观品质因数 QE为52~72。
주입쇄빈기술시실현다지자공관상간공솔합성적관건기술。대 S파단1 kW련속파자공관수출신호빈보적개선진행연구，분석료등사전류대자공관수출특성적영향，통과강저등사전류사자공관자유진탕하적수출미파빈대관도유10 MHz강저지300 kHz。통과제고삼고신호적주입공솔，유효지탁전료련속파자공관적주입쇄빈대관，최종획득료고체14 MHz적주입쇄빈대관。재불동주입공솔비적정황하，해련속파자공관적외관품질인수 QE위52~72。
The inject-locking on a magnetron is a key technique to achieve coherent power combining to extend the power capacitance of magnetrons. The improvement on the output spectrum of a 1 kW Continuous Wave(CW) magnetron at S-band is presented. The influence of the filament current on output characteristics of the magnetron is studied. The bandwidth of the free oscillating magnetron is reduced from 10 MHz to 300 kHz by decreasing its filament current. The inject-locking bandwidth of the CW magnetron has been expanded to 14 MHz by increasing the injection signal power. The External Quality Factor(QE) of the magnetron evaluated from the Adler equation varies from 52 to 72 at various injecting power ratios.