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h1_x2_r3
Joined: 02 Nov 2006
Posts: 14
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 26 Aug 2008 14:24 about Harmonic distortion |
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hello,everybody!
I have a question about testing the total Harmonic distortion,i do not kown the concept of total Harmonic distortion and how to use Cadence to simulate it?
thank you very much!
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A.Anand Srinivasan
Joined: 15 Oct 2005
Posts: 1773
Helped: 213
Location: India
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| 27 Aug 2008 4:25 Re: about Harmonic distortion |
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| harmonic distortion is the distortion caused by the harmonics of the input signal....
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mengcy
Joined: 21 Aug 2006
Posts: 15
Helped: 1
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| 27 Aug 2008 9:06 about Harmonic distortion |
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THD is the value harmonic energy versus the basic frequency energy.
To test the THD,you could use the tool box THD of calculator.
Moreover,you could run dft of the test signal.Then read the mainly harmonic dB energy minus the basic frequency dB energy.
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LvW
Joined: 07 May 2008
Posts: 799
Helped: 152
Location: Germany
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| 27 Aug 2008 9:15 Re: about Harmonic distortion |
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| h1_x2_r3 wrote: |
hello,everybody!
I have a question about testing the total Harmonic distortion,i do not kown the concept of total Harmonic distortion and how to use Cadence to simulate it?
thank you very much! |
- Harmonic distortion is caused by non-linearities within the circuit. In the frequency domain this effect creates harmonics (FOURIER analysis).
- The term "total harmonic distortion" is a parameter (unit: percent) which describes the amplitudes of the harmonics (Take the square root from the sum of all sqares of all harmonic amplitudes and divide it by the fundamental amplitude).
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