PLL Frequency Detector: Difference between revisions

Revision as of 15:32, 9 April 2021

Implements a PLL which locks to the input frequency and outputs an estimate of that frequency. Useful for FM Demod.

This PLL locks onto a [possibly noisy] reference carrier on the input and outputs an estimate of that frequency in radians per sample

Loop bandwidth (R): The loop bandwidth determines the lock range and should be set around pi/200 2pi/100.

PLL Freq Det can be used to detect the frequency of a (noisy) single tone.

This minimal demo does nothing than allow the user to adjust a Signal Source's frequency, and then estimate the same.

@@ Line 18: / Line 18: @@
 == Example Flowgraph ==
-Insert description of flowgraph here, then show a screenshot of the flowgraph and the output if there is an interesting GUI.  Currently we have no standard method of uploading the actual flowgraph to the wiki or git repo, unfortunately.  The plan is to have an example flowgraph showing how the block might be used, for every block, and the flowgraphs will live in the git repo.
+[[File:Pll_freqdet_simple.png]]
+PLL Freq Det can be used to detect the frequency of a (noisy) single tone.
+This minimal demo does nothing than allow the user to adjust a Signal Source's frequency, and then estimate the same.
 == Source Files ==