Hi my name is Jorge. I am a masters student at Universidad Politécnica de Madrid.
I am currently prototyping a receiver for my master thesis, and I would like to the ADL5725 as my LNA. In order to measure and evaluate the RF performance of the amplifier i designed an hybrid coupler and i am currently designing a custom PCB merging the evaluation board design with the 180º hybrid.
In the datasheet i saw that the RF Output requieres a 100Ohm differential line. But when i have checked the gerber files of the evaluation board i see that there is a transition from the differential line (I think its a microstrip since it does not have a ground plane near until it reaches the CPWG) to 2 single CPWG ones with 50 Ohm impedance. Am i correct?
How should i take in consideration the 100Ohm differential line to the single ones? Is there any application guide that i could follow?
Since i would like to use the same materials as the evaluation board, could i get the stackup of the evaluation board?
Thanks so much
