太赫兹科学与电子信息学报, 2015, 13 (2): 251, 网络出版: 2016-01-25
S波段 1 kW连续波磁控管拓展注入锁频带宽
Inject-locking bandwidth expansion of a 1 kW Continuous Wave magnetron at S-band
摘要
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。
Abstract
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.
霍飞向, 刘征宇, 黄何平, 银振宇, 刘长军. S波段 1 kW连续波磁控管拓展注入锁频带宽[J]. 太赫兹科学与电子信息学报, 2015, 13(2): 251. HUO Feixiang, LIU Zhengyu, HUANG Heping, YIN Zhenyu, LIU Changjun. Inject-locking bandwidth expansion of a 1 kW Continuous Wave magnetron at S-band[J]. Journal of terahertz science and electronic information technology, 2015, 13(2): 251.
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