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HMC1093 : Harmonic distortion of 4x multiplier

Question asked by AkiraO on Sep 20, 2016
Latest reply on Sep 26, 2016 by huangzeyan

Hello,

 

Our customer is in trouble with harmonic distortion of HMC1093. The output level of "5xLo - RF" and "5xLo - IF" are around 20dB bigger than "RF - 4xLo" and "4xLo + IF".

 

(1)Does 4x multiplier generate 3rd and/or 5th harmonics? And, how much are the level?

(2)Are the 3rd and/or 5th harmonics suppressed by filter or something circuit after 4x multiplier?

(3)Do you have any idea for improving the output level of "5xLo - RF" and "5xLo - IF"?

 

IF is around 4.7GHz, Lo is around 9.3~9.4GHz, RF is around 42GHz.

 

Best regards,

Akira

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