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AD8362

Question asked by hpkamen on Mar 31, 2017
Latest reply on Apr 5, 2017 by enash

Dear  Sir/Madam,

 

When entering a pure-carrier to AD8362 inputs (frequency of 2.001MHz power of 10dBm; or 10dBm frequency 2.0016MHz), according to the corresponding relationship between voltage and  power, the result is very accurate, is 10dBm. If using a combiner to combine  two 10dBm frequency( one is  2.001MHz and another is 2.0016MHz) together to the input, measured detector of output voltage only increased 61mV, that corresponds to power input is 11.2dBm, actual should be 13dBm, with Agilent of power meter or other instrument measuring the input power, they both show 3dBm increacement, When the frequency interval more than a 1kHz, the  total measured power can reach 12.3dBm.
When the frequency interval smaller than some value, the total power will decrease.
Could you please help clarify above.
Thanks.

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