Microwaves are electromagnetic waves with wavelengths between 1 mm and 1 m and frequencies between 300 MHz and 300 GHz. Due to their higher frequencies, microwave technology uses distributed circuit elements and transmission-line theory rather than discrete resistors, capacitors, and inductors for design and analysis. The term microwave generally refers to alternating current electromagnetic waves with frequencies higher than radio waves but lower than infrared wavelengths.

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".

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