What device increases the transmitted output power from a transceiver?

The device that specifically serves to increase the transmitted output power from a transceiver is the RF power amplifier. This component amplifies the radio frequency signals generated by the transceiver, allowing for stronger transmission over greater distances. The RF power amplifier takes the relatively low power output from the transceiver and boosts it to a level suitable for effective broadcasting.

In many radio communication systems, the transceiver's output power alone may not suffice for the desired coverage area or signal strength. An RF power amplifier addresses this need by providing the necessary gain, ensuring that the transmission can reach its intended audience and overcome any losses that may occur due to distance or obstacles.

While voltage dividers and impedance networks play important roles in managing and conditioning electrical signals, they do not amplify the power output. A voltage divider is used primarily for reducing voltage levels, and an impedance network (often consisting of matching devices) helps to match the impedance between components for optimal signal transfer. Neither of these functions directly increases transmitted power.

Therefore, the option indicating an RF power amplifier clearly identifies the appropriate device responsible for enhancing the transmission power from a transceiver.