2. Microwaves are electromagnetic waves
with wavelengthsranging from 1 mm to
1 m, or frequencies between300 MHz and
300 GHz. As a consequence,
practicalmicrowave technique tends to
move away from the discreteresistors,
capacitors, and inductors used with
lowerfrequency radio waves. Instead,
distributed circuit elementsand
transmission-line theory are more useful
methods fordesign, analysis. The term
microwave generally refers to
thealternating current.Electromagnetic
waves longer (lower frequency)
thanmicrowaves are called "radio waves".
