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freewing
Joined: 16 Mar 2005
Posts: 35
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 16 Nov 2005 0:29 1dB Compression voltage simulation |
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| I'm simulating the 1dB compression voltage of an amplifier. It's weird that the gain is not monotonically decreasing when the amplitude of input signal increases. For instance, from 25mV to 150mV, the gain increases from 1.55 to 1.63. Then from 150mV to 300mV, it decreases from 1.63 to 1.33. What's the reason and how can I get 1dB compression voltage?
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sunking
Joined: 25 May 2004
Posts: 914
Helped: 46
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| 16 Nov 2005 2:23 1dB Compression voltage simulation |
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the problem is the circuit nolinearity
what the dc operation points? keep that for 1dB compression voltage
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nxing
Joined: 10 May 2004
Posts: 446
Helped: 12
Location: China
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| 16 Nov 2005 7:00 1dB Compression voltage simulation |
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| In order to get 1-dB compression point, you need to run PSS simulation
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freewing
Joined: 16 Mar 2005
Posts: 35
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| 17 Nov 2005 21:34 Re: 1dB Compression voltage simulation |
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| I successfully did the 1dB compression point using PSS. It's more convenient.
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