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引言对宇宙飞船上的微波信号进行放大的途径有:1.行波管;2.普通三极管放大器;3.速调管;4.增幅管;5.固体放大器。为某一确定应用所进行的选择,取决于放大器的功率电平、所要求的带宽和放大器的激励信号电平。当前绝大多数宇宙航行只要求比较窄的频带。若要求带宽较大,即100兆赫或更宽些,则无可非议地将选择行波管。在要求窄频带的一般情况下,各器件的优点如下: 行波管当前,行波管的最大优点是:直到X波段
Introduction The spacecraft on the microwave signal amplification methods are: 1. Traveling Wave Tube; 2. Ordinary transistor amplifier; 3. Klystron; 4. Amplification tube; 5. Solid State Amplifier. The choice made for a given application depends on the amplifier's power level, the required bandwidth and the amplifier's excitation signal level. Most current cosmic voyages require only narrower frequency bands. If the required bandwidth is large, ie 100 MHz or wider, then the traveling wave tube will be indisputably selected. In the general case of requiring a narrow frequency band, the advantages of each device are as follows: Traveling Wave Tube At present, the biggest advantage of traveling wave tube is that until the X band