transmitter

(noun)

An electronic device that generates and amplifies a carrier wave, modulates it with a meaningful signal derived from speech, music, TV or other sources, and broadcasts the resulting signal from an antenna.

Related Terms

  • wavelength
  • frequency

Examples of transmitter in the following topics:

  • Antennae

    • Usually, it is used with a radio transmitter or radio receiver.
    • In transmission, a radio transmitter supplies an oscillating radio frequency electric current to the antenna's terminals, and the antenna radiates the energy from the current as electromagnetic waves (radio waves).
    • Antennas may also include reflective or directive elements or surfaces not connected to the transmitter or receiver, such as parasitic elements, parabolic reflectors, or horns.
  • Doppler Effect

    • We have a radio transmitter in the primed frame radiating at a frequency $\omega'$.
  • Reflection and Transmission

    • A wave experiences partial transmittance and partial reflectance when the medium through which it travels suddenly changes.
  • Microwaves

    • This frequency range is used for most radar transmitters, microwave ovens, wireless LANs, cell phones, satellite communication, microwave radio relay links, and numerous short range terrestrial data links.
    • A clear line of sight between transmitter and receiver is needed because of the short wavelengths involved.
  • Infrared Waves

    • This is a plot of Earth's atmospheric transmittance (or opacity) to various wavelengths of electromagnetic radiation.
  • Ultraviolet Light

    • This is a plot of Earth's atmospheric opacity (opposite of transmittance) to various wavelengths of electromagnetic radiation, including visible light.
  • Visible Light

    • This is a plot of Earth's atmospheric transmittance (or opacity) to various wavelengths of electromagnetic radiation.
  • Wireless Communication

    • ., radio transmitters and receivers, remote controls, etc.) that use some form of energy (e.g., radio waves, acoustic energy, etc.) to transfer information without the use of wires.
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