AnsweredAssumed Answered

HMC966LP4E Image Rejection

Question asked by sss on Jun 24, 2016
Latest reply on Jun 30, 2016 by huangzeyan

Hi all,


Our customer evaluate the HMC966 RF performances.


Frequency is ,

・LO=10GHz , +6.5dBm




Following the measurement setting is Typical Application Circuit at the datasheet 12 page.

SG(RF) - isolator - HMC966 - 90 deg Hyblid(IF) - filter - Spectrum Analyzer

SG(LO) - isolator -


Our customer measurement data of Image rejection is the data sheet specifications as well as the 15dB, but it is minimum spec.

Customer target spec is 20dB(min) w / design margin.


What we are thinking that ,

Is it possible to improve the performance by adjusting the line length between the IF1/IF2 output and the 90 deg Hyblid ?


Do we have other way to improve the performance of the Image rejection ?


Best regards,