Editing Antenna analyzer (section)

===Complex voltage and current meters===
A second type of antenna analyzer measures the complex voltage across and current into the antenna. The operator then uses mathematical methods to calculate complex impedance, or reads it off a calibrated meter or a digital display. Professional instruments of this type are usually called [[Network analyzer (electrical)|network analyzers]].<ref name=Carr-2000/>

Modern analyzers do not require the operator to adjust any {{mvar|R}} and {{mvar|X}} knobs as with the bridge-type analyzers. Many of these instruments have the ability to automatically sweep the frequency over a wide range and then plot the antenna characteristics on a graphical display. Doing this with a manually-operated bridge would be time-consuming, requiring one to change the frequency and adjust the knobs at each frequency for a match.