What component is used in radar systems with a wide band of transmitted frequencies?

Amplitrons are a type of electron tube that can operate at microwave frequencies and are specifically designed to amplify wideband signals. In radar systems that require a wide range of transmitted frequencies, such as those used for advanced tracking and targeting, amplitrons are effective because they can handle those diverse frequency ranges while providing the necessary amplification.

The function of a modulator is to manipulate the signal in a way that encodes data onto a carrier frequency, but it is not primarily responsible for amplifying wideband signals. Similarly, the transmitter is an essential component of radar systems, as it generates the radio waves needed for the radar operation, but it may not have the same capability for wideband frequency amplification as amplitrons. Glow discharge devices, while used in some electronic applications, are not typically associated with modern radar systems and do not serve the role of amplifying wideband signals effectively.

Thus, amplitrons are uniquely suited for radar applications where a wide band of transmitted frequencies is required.