Here are some example interview questions designed to address a basic understanding of prerequisite concepts. I am going to provide advanced interview questions for you to decompose into 5-10 basic-level interview questions similar to the example set. # Example Set of Basic Interview Questions: ## MOSFETs Draw a PFET/NFET symbol. What are the terminals? Which two terminals are often connected together and why? What are some use cases of a MOSFET? Why are MOSFETs used so often? What is the difference between a BJT and MOSFET? Draw IV curve for MOSFET How does it work? What is the difference between an N-channel and P-channel? What is the difference between enhancement-mode and depletion mode? What are the different modes of operation? Given Vgs and Vt, how will the FET behave? What operating region will it be in? Load-line analysis. What is the internal body diode? Where does it come from? Why are MOSFETs sensitive to overvoltage conditions applied at the gate? What is W/L ratio? How does it impact FET performance/behavior? # Expected Response Format: ### **Design Tools and Validation** #### What tools and techniques do you use for signal integrity simulation? - What is signal integrity simulation, and why is it important? - What software tools are commonly used for signal integrity analysis? - What is the purpose of time-domain vs. frequency-domain simulations? - How do you model PCB traces for simulation? - What is the role of SPICE in circuit simulation? - How do you validate simulation results against real-world performance? - How do parasitics influence signal integrity simulation? #### How do you validate PCB designs for manufacturing and high-frequency performance? - What is a design rule check (DRC), and why is it performed? - What are common PCB manufacturing constraints to consider in design validation? - How do you test for impedance control in PCB designs? - What tools are used to validate high-frequency signal performance? - How do you measure signal integrity in fabricated PCBs? - What is the importance of prototyping in PCB design validation? - How do environmental factors (e.g., temperature, humidity) influence PCB testing? # Set of Advanced Interview Questions to be decomposed into 5-10 Basic Questions each: