2100MHz RF Power Amplifier for International Mobile Telecommunications

The design is comprised of AFT18HW355SR6 Airfast RF Power LDMOS Transistor that offers high output power with a corresponding drain to source breakdown voltage. The coaxial cables are used for better efficiency while the copper wire attached to the ground helps in minimizing fluctuation and noise. The coils are used to improve the amplitude of the given frequency, which helps during an increase of attenuation. The TUI-9 RF transformer is for input impedance matching. The RC network is used as filter of the bias voltage.

This design is useful in rural areas where GSM signal is low. It is much cheaper compared to other RF equipment that require a lot of external components. It is also suitable for RF signal development that it can be modified with respect to the application requirements.