ABSTRACT
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 measuring some other quantities. These include wavelength, frequency, voltage standing wave ratio (VSWR), attenuation, phase shift, quality factor, scattering parameters, dielectric constant, reflection and transmission coefficients, electric field strength, impedance and power. At microwave range the techniques and equipment used are mostly different from those used at lower frequencies. The signal sources, measuring devices and the detecting elements in most cases assume different names in view of their nature of operation. This chapter discusses the measurement setups, signal sources, measuring equipment and the components required in test benches for measuring these quantities.
