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本文描述了一种非重人电子注、分布发射、正交場、前向波放大管——代玛管。早期的研制者用非重入型正交場放大管在获取高于6分贝的增益方面所遇到的若干困难,在代玛管中通过采用电子速度渐变或电路速度渐变的方法而得到了克服。本文所述的正交場放大管的設计理論,是基于应用等效磁控管的概念,并考虑到电子速度补偿的需要。实际上,通过改变底极——阳极间的距离,或改变直流磁場,或两都同时改变,均可以实现电子速度的补偿。用代玛管所做的实驗,在15％的带寬上,給出的增益大于10分贝。阳极工作电压为25千伏时,输出功率在300千瓦到500千瓦之間。实驗结果表明,设计理论用于大信号、饱和增益的工作范围时,是很令人滿意的。但是,由于缺乏合适的小信号理论,致使速度补偿还沒有达到最佳的运用。
This paper describes a non-heavy electron injection, distributed emission, orthogonal field, forward wave amplification tube - generation tube. Some of the difficulties encountered by early developers with non-reentrant orthogonal field amplifiers in gaining gains above 6 dB have been overcome in Demarcation by adopting electronic speed grading or circuit speed grading . The design theory of the orthogonal field amplifier described in this paper is based on the concept of equivalent magnetron and takes into account the need of electronic speed compensation. In fact, by changing the distance between the bottom - anode, or change the DC magnetic field, or both are changed at the same time, can be realized electronic speed compensation. Experiments with demacubes gave gains greater than 10 dB at 15% bandwidth. Anode working voltage of 25 kV, the output power of 300 kW to 500 kW. The experimental results show that the design theory is very satisfactory for the operating range of large signal and saturation gain. However, due to the lack of suitable small signal theory, the speed compensation has not been applied optimally.