Download UHF User Manual - Zurich Instruments
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3.3. Tutorial Amplitude Modulation Figure 3.15. Numerical results of AM demodulation under the Numeric tab Note By selecting 'Enable Demod Polar' in the Numeric tab, only the enabled demodulator outputs will show. If we take the sum of the double sidebands' amplitude (i.e. demodulator 2 and 3) and divide it by the amplitude of the carrier (demodulator 1), we will get an AM modulation index of h=Asideband/ Acarrier=0.2. This is exactly the index we had used to generate the AM signal in the MOD tab. UHF User Manual Revision 28900 Zurich Instruments 71