Solid State Power Amplifier (SSPA) converts a low-power radio-frequency signal into a higher power signal. The Raditek SSPA product line was designed to use in high-end technology applications like Airborne, Radars, Missile, and Communication applications. Further, there are many types of the solid-state power amplifier including the comparison between Gallium Arsenide (GaAs) and Gallium Nitride (GaN) Solid State Power Amplifiers. These can be compared in many aspects and here are a few of them –
1. GaAs operates at a lower voltage, and therefore, it is used in mobile devices like mobile phones. On the other hand, GaN operates at a higher voltage, and it can be used for high power applications.
2. GaAs SSPA degrades at a higher temperature while GaN has thermal conductivity three times higher than that of the latter one. So, GaN devices can run for more extended hours even at a higher temperature.
3. Since GaAs SSPA cannot withstand higher temperature, it is not as reliable as GaN devices. GaN keeps the devices cool even after being operated for longer hours.
4. GaAs devices are again less efficient than GaN devices. It is so because GaN has a crystal lattice structure and electron mobility properties. It conducts electricity more efficiently and provides a higher level of RF efficiency. It also facilitates the reduced loss of I2R power during conduction.
5. GaAs devices are cheaper as compared to GaN. The devices having GaN are two to three times expensive than the latter one. Still, GaN is in demand because of possessing the capacity to provide desired performance.