Transmitter

A transmitter is an electronic device that generates, amplifies, and transmits a radio frequency signal, typically carrying information like audio, video, or data. It modulates a carrier signal with this information and sends it out through an antenna. The range and power of a transmitter vary greatly, depending on its intended purpose, from short-range devices like Bluetooth headsets to powerful broadcasting stations that reach across continents. Key components often include an oscillator, modulator, amplifier, and antenna system. The quality of the signal produced can be impacted by the transmitter's design, power output, and environmental factors like interference.

Transmitter meaning with examples

• The radio station's massive transmitter tower was visible for miles, its powerful antenna broadcasting the news and music across a wide swathe of the state. Technicians constantly monitored the transmitter's performance, adjusting power levels to overcome interference and maintain signal clarity for optimal listener experience. Regular maintenance ensured the critical components, like the modulator, were operating efficiently.
• During the emergency, the handheld two-way radio's transmitter allowed the rescue team to maintain constant communication, relaying vital information about the survivors' location and needs. Its limited range, however, restricted communication to close proximity. The device's battery life and transmitter power became crucial considerations for extended rescue operations.
• In telecommunications, the satellite transmitter beamed signals from the ground station, up to the geostationary satellite for re-broadcasting, providing high-speed internet to remote areas. Complex coding and modulation are required to ensure the fidelity of data. Engineers optimized the transmitter's frequency and power levels to overcome atmospheric interference during transmission.
• The Bluetooth transmitter embedded in the wireless headphones sent audio signals from the phone to the earbuds, allowing for hands-free listening. Its low power design minimized battery drain. However, environmental factors, such as physical obstructions, could impact range and signal strength, sometimes causing intermittent audio dropouts. The device operates over a short range.