brmadhukar
Advanced Member level 3
LNA and mixer problem
Hello,
I have in my IC an LNA and two stage downcovertor along with a VCO+.... . The first mixer is standard Bipolar circuit. I observe a lot of harmonics ( these are components from theee Divisors in PLL ) whenever the LNA matching components are close to the mixer 1 out put pins ( this output is differential). How do I deal with this. Or any reference will be helpful. I cannot re-fab the IC. Other wise there are no problems. In shor there seems to be a problem with LNA and mixer. THe LNA output is clean
TIA
Hello,
I have in my IC an LNA and two stage downcovertor along with a VCO+.... . The first mixer is standard Bipolar circuit. I observe a lot of harmonics ( these are components from theee Divisors in PLL ) whenever the LNA matching components are close to the mixer 1 out put pins ( this output is differential). How do I deal with this. Or any reference will be helpful. I cannot re-fab the IC. Other wise there are no problems. In shor there seems to be a problem with LNA and mixer. THe LNA output is clean
TIA