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Qualcomm Hardware Engineer RF Interview Questions

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3 people found this helpful  

RF Hardware Engineer Interview

Anonymous Interview Candidate in San Diego, CA
Anonymous Interview Candidate in San Diego, CA
Application Details

I applied online. The process took 2+ monthsinterviewed at Qualcomm.

Interview Details

Apply on the website, make sure your plaintext resume is readable. Took them about 4-6 weeks to get back to me with a phone screening. I spoke with one of the directors of engineering. He was very nice/sincere and technically apt. Questions were pretty basic about IP3, smith chart, vswr, and how you would make measurements in a lab.

The on-site interview consists of 5 technical interviews about an hour each. Almost every interview asked to draw a RF front end architecture and draw/explain how a phase lock loop works. Expect questions about constellations, eye diagrams, RF design challenges, IP3, p1dB, smith chart, amp class biasing, analog RF filters (be perpared to draw elliptic, cheby, butterworth, etc), noise figure, etc. There are some esoteric terms which I was unfamiliar with such as gamma opt(optimum matching coefficient) and beta for FM (modulation index for FM). You really need to be able to answer questions on ALL of these topics. I'd say I aced 4 of the 5 interviews and did okay on one and wasn't offered a job, so make sure you know everything I just described inside and out.

There are no behavioral or situational questions. They seem to only care about what you know and not whether you'll be easy to work with. This is a bit disconcerting for people such as myself who have worked on a design team before and know the challenges of working with stubborn engineers.

Interview Questions
  • Be prepared to talk about stochastic probability density functions as they relate to signal theory.   Answer Question
No Offer
Negative Experience
Difficult Interview

Other Interview Reviews for Qualcomm

  1. 2 people found this helpful  

    RF Hardware Engineer Interview

    Anonymous Interview Candidate in San Diego, CA
    Anonymous Interview Candidate in San Diego, CA
    Application Details

    I applied online. The process took 2 weeksinterviewed at Qualcomm in May 2012.

    Interview Details

    I apply for the job and I received an e-mail for a phone interview 1 week after applying. The phone interview was with an engineer. It was about things on my resume, and questions about receiver, transmitter, key parameters of LNA, PA, explain each, why we use LNA, why we should be in IF, mixers, antennas. She also ask me lab test equipment I used. I passed the phone interview and had the on-site interview with 5 managers and my recruiter. The MOST important things you MUST know are Smith chart, IP3 and PLL. They all asked me questions about that, and also on filters, SAW, BAW technology. You should also be able to talk about the projects mentioned on your resume. I didn't get an offer because I wasn't ready for the interview, but I learnt a lot.

    Interview Questions
    • Directions I should give to design engineers: where to put each components (filters, mixers, LNA etc) of the transceiver, and why. What kind of filter I should use, why?   Answer Question
    No Offer
    Positive Experience
    Difficult Interview
  2.  

    RF Hardware Engineer Interview

    Anonymous Interview Candidate in San Diego, CA
    Anonymous Interview Candidate in San Diego, CA
    Application Details

    The process took a dayinterviewed at Qualcomm in May 2012.

    Interview Details

    The initial process of the interviews were very planned and organized. There were total of 6 interviews.. with 1 telephonic screening interview and 5 onsite face to face interviews and i was interviewing for entry-level position. They directly went into technical stuff. And the interviews were are scenario based. like i am facing this issue what is the problem and how can it be resolved. Qualcomm is well known for its tough interviews.

    Interview Questions
    • Asked me design a multimode/multiband transceiver.   Answer Question
    • questions regarding Smith charts, IIP3, cascaded NF. Issues with superheterodyne and direct conversion mixers   Answer Question
    No Offer
    Neutral Experience
    Difficult Interview
  3.  

    Hardware Engineer RF Interview

    Anonymous Interview Candidate in San Diego, CA
    Anonymous Interview Candidate in San Diego, CA
    Application Details

    The process took a dayinterviewed at Qualcomm in April 2012.

    Interview Details

    It's take an hour for interview. The question includes several field about telecommunications including hardware and system.

    Interview Questions
    • opAmp, MOS, Smith Chart matching, AM,, bode plot, basic small signal analysis, stability of circuit...   Answer Question
    • System of communication form TX to RX, detail and why?   Answer Question
    No Offer
    Neutral Experience
    Difficult Interview
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  5.  

    RF Hardware Engineer Interview

    Anonymous Interview Candidate in Boulder, CO
    Anonymous Interview Candidate in Boulder, CO
    Application Details

    I applied online. The process took a weekinterviewed at Qualcomm in November 2011.

    Interview Details

    I interviewed for a half day with a manager and 4 engineers.

    The manager worked hard to sell me on the position.

    The engineers spoke with me about what I've done, what they do, and we talked some technical issues so they could assess my understanding of the skills required to be successful in the job.

    It was a long, but enjoyable, day

    Interview Questions
    No Offer
    Positive Experience
    Average Interview

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