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单只磁控管输出功率不能满足大规模工业应用, 需要对多只磁控管进行相干功率合成. 为解决普通磁控管相干功率合成所需的相位一致性, 需要对普通磁控管引入注入锁频技术, 以保障工作频率和相位差的稳定性. 本文在阻抗匹配的条件下, 结合磁控管稳定振荡的条件, 从等效电路的角度出发对磁控管注入锁频原理进行分析, 给出了在小注入比和大注入比情况下磁控管的注入锁频理论, 大注入比情况比小注入比情况给出了更大的锁频带宽. 采用MATLAB对理论方程进行解析求解, 同时通过三维粒子仿真软件对锁频理论进行了对比验证, 得出了在不同注入比下磁控管的锁频带宽和相位差微分方程, 给出了在不同初始相位下的相位差变化曲线, 得到了A6磁控管在自由振荡和注入锁频工作下三维模拟仿真的输出功率、频率和波形. 模拟结果表明, 在两种情形预测的锁频带宽内, 磁控管均能被锁定并稳定工作, 在大注入比下大注入比情况比小注入比情况更为准确.
关键词:
磁控管
注入锁频
注入比
相位差 相似文献
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半胱氨酸合铁(Ⅱ)晶体的制备及结构表征 总被引:4,自引:0,他引:4
本文首次成功地制备出半胱氨酸合铁(Ⅱ)的两种晶体,并通过元素分析确定了两种配合物的组成,其结果与前人经过溶液分析确定的组成相同。经红外光谱、X-光电子能谱确定了两种配合物的结构。 相似文献
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岳松王友刘品伟宫文峰汪波周正侯良科 《光学与光电技术》2022,(5):63-69
针对傅里叶红外成像光谱数据中的一种干扰现象和消除方法进行了分析和研究。在傅里叶红外成像光谱仪中,在某些情况下会在光谱数据中出现一种尖锐凸起的干扰峰。该种干扰峰的峰位位置不固定,且幅度会发生较大的变化。从红外探测器、大气吸收特性、目标辐射特性、系统噪声等几个方面对该种现象的出现进行了分析。提出了该种现象出现的原因是由于红外探测器的灰度浮动造成的。针对该干扰现象的形成机理,提出通过噪声拟合法来消除这一干扰。经过实验验证,提出的方法可以有效地消除傅里叶红外成像光谱仪中的这种干扰峰,能有效提高傅里叶红外成像光谱仪的检测效果和抗干扰能力。 相似文献
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Based on the scatter matrix of the four-port lossless mismatched circulator, the phase differential equation of the injection-locked magnetron is derived by comparing different effects of the mismatched and perfect circulator on the injection ratio. Besides, the locking range of the injection-locked magnetron with the mismatched circulator is deduced by functional operation. In addition, the phase differential equation and the locked bandwidth of the injection-locked system with a mismatched circulator are compared with those of the small injection-ratio case with a perfect circulator. The influence of the circulator reflection coefficient on the injection-locked magnetron is also analyzed by numerical calculation.Theoretical analysis shows that the decrement of the locked bandwidth is less than 1% and decrement of the stable phase difference is less than 1.2% when the reflection coefficient is less than 0.1. 相似文献
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Theoretical investigation of frequency characteristics of free oscillation and injection-locked magnetrons 下载免费PDF全文
The frequency characteristics of free oscillation magnetron(FOM) and injection-locked magnetron(ILM) are theoretically investigated.By using the equal power voltage obtained from the experiment data,expressions of the frequency and radio frequency(RF) voltage of FOM and ILM,as well as the locking bandwidth,on the anode voltage and magnetic field are derived.With the increase of the anode voltage and the decrease of the magnetic field,the power and its growth rate increase,while the frequency increases and its growth rate decreases.The theoretical frequency and power of FOM agree with the particle-in-cell(PIC) simulation results.Besides,the theoretical trends of the power and frequency with the anode voltage and magnetic field are consistent with the experimental results,which verifies the accuracy of the theory.The theory provides a novel calculation method of frequency characteristics.It can approximately analyze the power and frequency of both FOM and ILM,which promotes the industrial applications of magnetron and microwave energy. 相似文献
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