基于磁控管的S波段大功率窄带随机信号源研究

磁控管具有功率大，效率高，体积小，成本低等特点，且输出频谱也与其阳极电压和阴极电流密切相关，据此特性研制了基于磁控管的S波段大功率窄带随机信号源。通过实验探究不同阴极电流和阳极电压下磁控管的输出频谱，并利用微控芯片控制磁控管的阴极电流和阳极电压产生随机变化，实现了大功率窄带随机信号的产生。结果表明，窄带随机信号的中心频率为2.46 GHz，平均输出功率达到1.4 kW，直流到微波的转换效率超过70%。本文研制的大功率窄带随机信号源在通信干扰与抗干扰等领域有潜在的应用价值。

Research on S-band high-power narrow-band random signal source based on magnetron

An S-band high-power narrow-band random signal source based on magnetron is developed by taking the magnetron''s advantages, including high power, high efficiency, small size and low cost. Theoretically, the spectrum of a magnetron''s output signal is closely related to its power supply. Herein, the output spectra of magnetron under different cathode currents and anode voltages are experimentally measured. Then, a microcontroller is utilized to control the power supply to generate random variation of anode voltage and cathode current in a specific range. In this way, the output microwave signal of the magnetron would also change randomly in a certain range, thus generating a high-power, narrow-band random signal. Experimental results show that the center frequency, average output power of the narrowband random signal are 2.46 GHz and 1.4 kW, respectively, with DC to microwave conversion efficiency higher than 70%. The high-power narrow-band random signal source developed in this paper has potential applications in electronic countermeasures, communication jamming and anti-jamming situations.