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近几年我区已普及了全固态发射机。该种机器效率高、工作稳定可靠,但全固态发射机对工作环境要求苛刻,主要是天线调配网络的阻抗匹配,它将直接影响发射机的安全运行,影响发射机输出的高频功率能否最大无失真的输送到天线上。通常对全固态发射机的输出网络有以下三点要求:(1)天线调配网络和射频电缆的阻抗必须严格匹配,并具有良好通带特性。(2)同一发射台的其它发射频率以及周边的电台射频功率倒送对发射机的影响必须降低到最低。
In recent years I have popularized all-solid state transmitter. This type of machine has the advantages of high efficiency and stable and reliable operation. However, all-solid-state transmitters are harsh on the working environment, mainly because the impedance matching of the antenna deployment network directly affects the safe operation of the transmitter and affects the high-frequency power output of the transmitter The maximum distortion-free delivery to the antenna. The following three requirements are generally required for the output network of an all-solid-state transmitter: (1) The impedance of the antenna deployment network and the RF cable must be strictly matched and have good passband characteristics. (2) The impact on the transmitter of other transmit frequencies at the same transmitting station and the radio frequency power of the neighboring stations must be minimized.