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10
Microwave Measurements
10.1 Introduction
The concept of measurement in the microwave region is entirely different
from that of low-frequency measurement of voltage, current, impedance,
power or energy. Magnitudes of some of these quantities (e.g. voltage and
current) reduce to such a dismal level that these are not even measurable in
most of the cases. However, useful information can be gathered by measur-
ing some other quantities. These include wavelength, frequency, voltage
standing wave ratio (VSWR), attenuation, phase shift, quality factor, scat-
tering parameters, dielectric constant, reection and transmission coef-
cients, ele ...