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RF Power Amplifier Design Engineer

Job Description
This job opportunity is based in Morgan Hill, CA with our newly acquired LDMOS and GaN fab (formerly part of Infineon).
What can Wolfspeed do for you?
Potential for future mobility within a strong-growth oriented company and a technology leader in Power and RF devices
Our company has a broad portfolio in growing markets, which provides good opportunities for stability and experience
Be a part of a strong technical team that values agility, contribution, and enjoying work
Work directly with technology directly contributing to the future of transportation, energy, and communications
What can you do for Wolfspeed?
Take a key role in providing technical input to the business unit across multiple areas, from die development to PA architecture optimization
Develop RF power amplifier (RFPA) solutions using established and advanced architectures to achieve higher levels of performance in future customer systems
Research specific transistor die level requirement to improve RFPA system level performance in terms of efficiency, linearity, and bandwidth
Work with the packaging team to develop innovative transistor packaging solutions to meet performance and form-factor requirements
Develop the necessary integrated passive device designs for input & output matching, as well as interstage circuit design
Work alongside digital pre distortion engineers to investigate correlation between power amplifier implementation and DPD linearization behavior
Work with customers' advanced development teams to define device level solutions as well as RFPA modules for future market requirement
Pursue state of the art technology to push the boundary of efficiency of the RFPA devices and circuits
Explore harmonic effects and high efficiency modes of RF power amplifier operation
Combined use of non-linear model based analysis, as well as automated load-pull to study device and circuit behavior
Bring idea from concept stage to laboratory prototype using appropriate RF simulations
What you need for success:
MSEE or PhD in Electrical / Electronic Engineering with at least three years experience in RF power amplifier design
Solid understanding of RFPA theory, load line theory, impact of harmonic and fundamental impedance, device parasitics
Highly proficient in impedance matching network theory, matching bandwidth and Q
Solid understanding of Doherty amplifier system design and operation, load modulation, loss mechanisms, device asymmetry and topology selection
Skilled in the use of EDA tools such as ADS, AWR, HFSS and Matlab
Highly proficient in linear, non-linear and electromagnetic analysis of RF components
Good understanding of digital pre-distortion (DPD), and corresponding RF power amplifier design optimization
Proficient in the operation of RF laboratory equipment, including automated load pull, network and spectrum analyzer, oscilloscope, power meter etc.
Open minded perspective to other technical inputs
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. Be part of our future and have a direct impact while working for an organization that provides a place to work alongside brilliant people, a competitive total rewards package, and a problem solving culture. We invite you to submit an application if you feel we would be a good fit. We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, national origin, disability status, protected veteran status, or any other characteristic protected by law.



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