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从可靠性出发来看超高频管的工艺,可分为二个问题来理解:1)原理问题a)在合理的寿命期内获得大的阴极电流密度及低噪声阴极的制备;b)在强的直流或交流场时防止火花放电;c)介电构件(能量窗、天线)大的高频功率的传输;d)电极的直流或脉冲损耗功率的耗散大及衰减元件高频损耗功率的耗散大;
From the reliability of UHF tube to look at the process, can be divided into two questions to understand: 1) the principle of the problem a) to obtain a large cathode current density and low noise cathode in a reasonable life expectancy; b) Strong DC or AC field to prevent spark discharge; c) transmission of large high frequency power of dielectric members (energy windows, antennas); d) DC or pulse losses of electrodes Large dissipation of power and attenuation element High frequency loss power The dissipation of large;