Hard feed tube power synthesizer

The utility model relates to a hard feed tube power synthesizer which is suitable for doing the power synthesis in an all-solid-state television transmitter. The utility model comprises a power input and an output devices, an upper and a lower cover plates, an upper and a lower tube seats and hard feed tubes, an inner conductor, an absorption resistance plate, and a heat sink, wherein, the hard feed tube, the upper and the lower tube seats, and the absorption resistance plate are all connected by the silver solder welding. The heat sink is arranged on the lower surface of the absorption resistance plate, and consequently the utility model has the advantages of reasonable structural design, disposable forming, free adjustment, reliability and stable performance, easy batch production, etc.