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美国于1947年开始研究正交埸放大管。法国从四十年代末到现在一直连续不断地大力研究此种器件。随着行波管积累了更多的经验,它在宽频带放大应用方面的某些短处就变得明显了。增盆、带宽和输出功率往往不足以说明对管子的要求。在考虑系统计方面,效率、工作电压、线性、动态范围、相位稳定性、噪声特性以及多模式能力也是重要的参数。在许多应用中,尺寸、重量和冷却特性的要求是苛刻的。那么
In 1947, the United States began to study Orthogonal Oversight. France from the late 1940s to the present has been a continuous study of such devices. As the traveling wave tube accumulates more experience, some of its shortcomings in wide band amplification applications become apparent. Increased pot, bandwidth and output power are often not enough to explain the requirements of the tube. Efficiency, operating voltage, linearity, dynamic range, phase stability, noise characteristics and multi-mode capability are also important parameters when considering system statistics. In many applications, the size, weight and cooling requirements are harsh. Then