What is the difference between spectrum and frequency?

Spectrum analyzers measure the magnitude of an input versus signal frequency. Vector signal analyzers measure the magnitude and phase of an input signal at a single frequency . A signal analyzer performs both functions together.

The signal spectrum describes a signal’s magnitude and phase characteristics as a function of frequency . The system spectrum describes how the system changes signal magnitude and phase as a function of frequency.

Any signal whose amplitude is a function of time has a corresponding frequency spectrum . When the signals are viewed in the form of a frequency spectrum, certain aspects of the signals or the underlying processes producing them are revealed.

The electromagnetic spectrum is the range of all possible frequencies of electromagnetic waves . The spectrum is broken into regions/ranges and classified by frequency and/or wavelength. The frequency (f ) of an electromagnetic wave is a measure of how rapidly it oscillates.

Frequency spectrum of a signal is the range of frequencies contained by a signal . For example, a square wave is shown in Fig. 3.5A. It can be represented by a series of sine waves, S(t) = 4A/π sin(2πft) + 4A/3π sin(2π(3f)t) + 4A/5π sin(2π(5f)t + …)

The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz). Electromagnetic waves in this frequency range, called radio waves, are widely used in modern technology, particularly in telecommunication. … Waveguide frequency bands. BandFrequency rangeY band325 to 500 GHzRadio spectrum – Wikipedia en.wikipedia.org › wiki › Radio_spectrum