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 ?