This design is a simple water cooled power amplifier that uses copper spreader. It has temperature sensor that is pressed against the copper heat spread. The low pass filter passes the signals with a frequency lower than the cutoff frequency. This also conditions the signal to provide a smoother form of a signal removing short-term fluctuations. In addition, this device has an output power of 1000W with a frequency of 144MHz. It has also a low noise temperature controlled cooling fans and a 50V LDMOS transistor that is normally used in a push pull configuration.
The solid state power amplifiers provide useful amplification at gigahertz frequencies. These are commonly used in commercial and industrial broadband applications. Some designs are used for airborne, missile, communications, radar and other scientific applications.
