Figure 1, which follows, depicts the electromagnetic radiation spectrum and some of the commonly used or known areas. | 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. Section 7-1 provides an additional breakdown of the EO IR spectrum. To convert from frequency f to wavelength 8 and vice versa recall that f c 8 or 8 c f where c speed of light. JHz 3x105 300 fkHz fMHz fGHz or _ 3x108 Jhz 8 meter r _ 3x105 kHz 8 meter fMHz 300 meter _ fGHz 8 meter 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 ft Figure 1. Electromagnetic Radiation Spectrum GHz 20 30 40 50 60 80 100 GHz 2 3 4 5 6 8 10 GHz 1 m 10 cm 1 cm Figure 2. The Microwave Spectrum .
