FREQUENCY SPECTRUM

Figure 1, which follows, depicts the electromagnetic radiation spectrum and some of the commonly used or known areas.

Figure 2 depicts the more common uses of the microwave spectrum.

Figure 3 shows areas of the spectrum which are frequently referred to by band designations rather than by frequency.

The electro-optics section provides an additional breakdown of the EO/IR spectrum.

To convert from frequency (f) to wavelength () and vice versa, recall that f = c/, or = c/f;
where c = speed of light.

Some quick rules of thumb follow:


Metric:: Wavelength in cm = 30 / frequency in GHz; For example: at 10 GHz, the wavelength = 30/10 = 3 cm

English:: Wavelength in ft = 1 / frequency in GHz; For example: at 10 GHz, the wavelength = 1/10 = 0.1 ft