Hi Leong,
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Good work, but the LZ1AQ IOP3 looks far too low.
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It is quoted as being
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1 dB output compression point(9) +19dBm (5.6 V p-p), equal to +125 dB(uV/m) at input
Second harmonic OIP2(7) +82dBm to +105dBm
Third harmonic OIP3(8) +41dBm to +42dBm
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Looking back at my results, the best I could manage to measure was:-
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OIP2 +74dBm
OIP3+42dBm
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My normal sanity check is to check that the IOP3 is typically 10 to 15dB higher than the P1dB value.
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What's your test setup, and how do validate it ?
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Regards,
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Martin