Not really hard questions. One of the tech asked very specific questions about circuit design, which is directly related to the real problem they are facing.
Rf Design Engineer Interview Questions
1,364 rf design engineer interview questions shared by candidates
RF parameters, NF, IP3, P1dB?
questions about impedence or resistor.
how to make impedence to be zero?
PA basics, Receiver basics and all RF stuff on system level(maybe some transistor level things), also EM stuff
Basics of a smith chart? What happens when you have an attenuator and see the s parameters on smith chart?
Usage of HFSS and ADS FEM
the smith chart and related impedence matching questions
Smith Chart, Simple EM knowledge
Matching in LNA, Smith chart, VNA and other equipments use
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