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Determining Frequency Deviation Using Bessell Null
Question asked by
paul_humphries
on Apr 23, 2008
Latest reply
on Jun 11, 2010 by tabbott
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How is Frequency Deviation calculated using Carrier Null. Can someone please explain the method/formula?
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tabbott
Jun 11, 2010 8:04 AM
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Hi Paul -
Before dedicated FM demodulators were in Spectrum Analyzers, this is how one measured FM deviation. The Bessel Null technique was used for calibration and the Slope Detection technique was used for measurements.
http://cp.literature.agilent.com/litweb ... 4-9130.pdf
Chapter 3 (pages 14-20) discusses Frequency Modulation.
Regards -
Before dedicated FM demodulators were in Spectrum Analyzers, this is how one measured FM deviation. The Bessel Null technique was used for calibration and the Slope Detection technique was used for measurements.
http://cp.literature.agilent.com/litweb ... 4-9130.pdf
Chapter 3 (pages 14-20) discusses Frequency Modulation.
Regards -