Which term describes the device that increases the amplitude of a signal in a wireless link?

Which term describes the device that increases the amplitude of a signal in a wireless link?

• A. Carrier Wave
• B. Datalink
• C. Noise
• D. Antenna Gain

Answer: (D)

Antenna gain is about how much energy an antenna concentrates in the direction you care about. In a wireless link, increasing the antenna’s gain focuses more of the transmitted power toward the receiver, which raises the signal amplitude that arrives and improves the link quality. It’s a directional effect, not adding new power itself, but redistributing it to the forward direction. That’s why this term best describes a device that increases signal amplitude in the link. The other terms don’t fit: the carrier wave is the basic waveform that carries information, the datalink refers to the overall data communication path, and noise refers to unwanted random signals.

Antenna gain is about how much energy an antenna concentrates in the direction you care about. In a wireless link, increasing the antenna’s gain focuses more of the transmitted power toward the receiver, which raises the signal amplitude that arrives and improves the link quality. It’s a directional effect, not adding new power itself, but redistributing it to the forward direction. That’s why this term best describes a device that increases signal amplitude in the link.

The other terms don’t fit: the carrier wave is the basic waveform that carries information, the datalink refers to the overall data communication path, and noise refers to unwanted random signals.