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What's the 3rd order intercept point?

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elec350

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hi
what's 3rd order intercept point? pls explain
 

safwatonline

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Intercept Point

it is the point at which the fundmental power equal to the IM3 power

Added after 4 minutes:

note this is usually a theoritical point as the output power will compress before reachng this point and hence the IP3 is found by intersecting the extention of the fund. and IM3 components "i.e. u linearize the system around some small signal operating point " ,usually it gives an indication about linearity where usually P1dB=IP3-10
 

elec350

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Re: Intercept Point

pls write relations for computing IP3 or graphes for it
 

safwatonline

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Intercept Point

refer to any RF book, i recommend Razavi's and Thomas Lee's for a start
 

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