swept-frequency analyzer
swept-frequency analyzer
[¦swept ‚frē·kwən·sē ′an·ə‚līz·ər] (electronics)
A spectrum analyzer in which a ramp generator simultaneously moves a spot horizontally across an electronic display and increases the frequency of a local oscillator; and any signal at the input, at a frequency such that the difference between its frequency and the local oscillator is within the bandwidth of an intermediate-frequency filter, vertically deflects the spot on the display by an amount proportional to the amplitude of the input signal being analyzed.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive
The 1990 article "Digital Implementations Compete With
Swept-Frequency Analyzers" tackled the mismatch between the need to simultaneously capture all of a signal's frequencies and the swept-frequency spectrum analyzer's serial operation.
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