Characterization Engineer Interview Questions in San Jose, CA | Glassdoor

Characterization Engineer Interview Questions in San Jose, CA

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Which structure produce a higher PL signal? Flat band Quantum Wells structures or the QWs has piezoelectric effect?

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Flat band

Describe how an IC block works?

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You have a metal sphere hanging from a spring in an elevator. You would like to measure the movement of the ball relative to the carriage throughout the day. A.) Come up with a list of devices you could use to measure the movement. B.) Use the capacitance formed by the ball and a metal plate on the elevator floor to create a measurement device for a microcontroller.

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You have a strain gauge with a nominal resistance of 10K and varies by only +/- 1% under maximum load. Design a circuit to measure this sensor with a output range of a full 0-5V. Part 2: If you needed 1000 different levels of digital accuracy, how many bits would you need in an ADC?

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Noise figure of cascaded system

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How to design a RF PA ( from my resume ) may not be applicable to others and same for LNA.

Block diagram of full Transceiver Module ( Transmit and Receive Chain including antenna and BPF with switch is expected ) After drawing it, questions related to sensitivity of RX chain , it's derivation with equation and after that a mathematical problem , was expected to find the final receiver sensitivity or noise floor to be specific for certain frequency band. After that question related to noise and small signal modeling and how to change gm of a Mosfet to reduce noise floor of previous question . Was expected to draw and complete small Signal modeling and then noise modeling and explain the situation .

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My Current and previous job day to day activities and overview of kind of products I have worked on.