When a power amplifier was mounted on our application board and evaluated, the output power decreased. Do you have any thoughts about what the cause might be?

• * This FAQ mainly explains GaAs products using GaAs substrates and RF CMOS products using SOI technology.

RF Device

The RF characteristics of a power amplifier are affected easily by the impedance of filters, etc., connected subsequently, and the transmission wave of applications may be affected in some cases.
In connecting devices to a power amplifier, please match characteristics impedance at 50 ohm as closely as possible, or tune the impedance between these devices before connecting.