RF Engineer

Tell me about a time you used a network analyzer or spectrum analyzer in a lab or class project. What were you measuring and why?

hands-on familiarity with the actual equipment listed in the posting versus purely theoretical knowledge

Tell me about a group project or internship where you had to work with people from different engineering disciplines, like mechanical or software, to get something built.

readiness to function on a cross-functional product development team, which this role explicitly requires

Tell me about a time a design didn't work the way you expected and you had to go back and figure out what went wrong.

ownership and rigor when facing failure, important for a role that will involve a lot of trial and iteration

What draws you to RF specifically, and have you had any exposure to antenna design, even coursework or personal projects?

genuine interest and any concrete antenna-related experience beyond the stated minimum qualifications

Walk me through how you'd design a basic RF block diagram for a transceiver, starting from antenna to baseband.

whether the candidate understands fundamental RF signal chain concepts and can reason through a system, not just recite terms

What's the difference between impedance matching for maximum power transfer and matching for minimum reflection, and when would you care about one over the other?

depth of RF theory beyond textbook definitions

Have you done any PCB layout work, even in school? What RF-specific layout considerations did you have to think about, like trace routing or ground planes?

whether they grasp that RF PCB design has different rules than digital layout

What do you know about how a cellular simulator is used to test a device, and have you had any exposure to that kind of equipment?

specific familiarity with the named test tool versus general lab experience

Explain in simple terms what return loss and VSWR tell you about a circuit, as if you were explaining it to a new intern.

whether foundational concepts are solid enough to teach, not just memorized

If you measured an unexpected spike in your S-parameter plot while characterizing a filter, how would you go about figuring out if it's a real design issue or a measurement artifact?

debugging instinct and whether they separate test setup error from actual circuit behavior

Suppose your antenna prototype isn't hitting the gain or bandwidth spec from simulation. Walk me through how you'd start troubleshooting.

structured problem-solving and whether they know to check simulation assumptions, fabrication tolerances, and test setup

If your manager asked you to validate a new antenna's performance but gave you a tight deadline and limited lab time, how would you prioritize what to test first?

time management and judgment about what data actually matters under real product constraints