Design Engineer

Wolfspeed (Cree's Power & RF division) is one of the world's leading suppliers of gallium nitride (GaN) wafers and devices for RF communications, radar and electronic warfare. Our business is growing rapidly and is in need of a RF/Microwave Power Amplifier Design Engineer for our RF product development team. The primary focus of this role is the Load-Pull System characterization, calibration, and verification of cutting edge products using GaN HEMT and LDMOS technologies. At Wolfspeed, you will: Apply your working knowledge and proficiencies, to Maury and Focus Load-Pull Systems Maintain Load-Pull systems, including peripheral equipment Perform load pull measurements Design, Develop, and Characterize Load-Pull Fixture Standards (Line, Thru, Reflect) Organization Load-Pull Activities Support (Load-Pull Team, Product Development Requests) What you need for success: BSEE or demonstrated equivalent experience 3 years High Power RFcircuit design/measurement experience with 2 years of load-pull experience. Working knowledge of measurements used for characterization of high power RF systems, including wireless standards and pulsed operation: Output Power, Drain Efficiency, PAE Efficiency, Power Gain, Linearity, Spurious emissions, pulsed topics including safe operational methodologies. The candidate should be an expert with Vector Network Analyzers and able to perform full TRL Calibrations, for 2-N port characterizations and fixture measurements. Working Knowledge and rudimentary programming skills and experience using Matlab and other tools for test control and driver generation. Working knowledge and experience with industry standard Maury and Focus load-Pull systems, including set-up and calibration techniques. Should be familiar with the following: broadband tapered fixture design, various classes of operation used in RF power devices (A, B, C, F, F') as well as basic knowledge of Doherty operation, good trouble shooting skills and the ability to teach and learn in a dynamic, collaborative environment. Proficient at using CAD and Simulation software Tools AWR, ADS, Autodesk (Auto-Cad, Inventor).   Overview Since our beginning 30 years ago, we have introduced innovative and disruptive solutions that enable a more efficient, productive and safer world. We continue our leadership in developing market-leading lighting-class LEDs, lighting products and semiconductor products for power and radio frequency (RF) applications. We believe in unlocking the power and potential of technology, enabling the world to do more with less. We aim to transform the way people experience light and are also leading the innovation of Power/RF products that move us toward a more energy efficient future 2018-7211
Salary Range: NA
Minimum Qualification
Less than 5 years

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