Doherty RF Power Amplifier Engineer — Design Lead

Sumitomo Electric Device Innovations U.S.A., Inc.; United States; Sur place; USD 160 000 - 170 000; Plein temps

Résumé du poste

Sumitomo Electric Device Innovations USA, Inc. in Dallas, TX is seeking an experienced RF Design Engineer to design and optimize Doherty Power Amplifiers for advanced wireless applications.

The role focuses on development, testing, and validation of high-performance RF power amplifier solutions in our lab. You will work with ADS/AWR HFSS/CST, develop schematics, select components, review PCB layouts, and analyze performance metrics such as efficiency, gain, ACLR, EVM, and thermal behavior.

Qualifications

• Bachelor's degree in electrical engineering, RF engineering or related field.
• 5+ years hands-on RF design experience, including power amplifier development.
• Demonstrated expertise designing and optimizing Doherty Power Amplifiers for commercial wireless applications.
• Strong understanding of RF fundamentals including impedance matching, stability analysis, nonlinear device characterization and RF system performance metrics.
• Experience with RF simulation and modeling tools such as ADS, AWR Microwave Office, HFSS, CST, or similar.
• Proficiency in RF measurement techniques and laboratory testing utilizing LabVIEW, MATLAB or equivalent.
• Knowledge of PCB design principles for RF and high-frequency circuits.
• Experience designing power amplifiers for 4G LTE, 5G NR, ORAN, or other wireless infrastructure applications.
• Familiarity with digital predistortion (DPD) and crest factor reduction (CFR) techniques.
• Experience with GaN, LDMOS, or advanced RF semiconductor technologies.
• Knowledge of multi-band, wideband and high-power RF amplifier designs.
• Experience supporting products through manufacturing and volume production.
• Familiarity with EM simulation and RF packaging considerations.
• Ability to work on-site at our Dallas, TX engineering laboratory, including hands-on testing, tuning, troubleshooting and validation of RF hardware prototypes.

Responsabilités

• Design and develop RF and microwave power amplifier circuits for wireless communication systems.
• Lead the architecture, design, optimization and validation of Doherty Power Amplifiers operating across various frequency bands.
• Conduct RF simulations using industry-standard EDA tools such as ADS, AWR Microwave Office, HFSS, CST or equivalent.
• Develop schematic designs, perform component selection and support PCB layout reviews.
• Analyze and optimize amplifier performance including efficiency, gain, linearity, ACLR, EVM, PAE and thermal characteristics.
• Support prototype development, debugging, tuning and verification in laboratory environments.
• Utilize RF test equipment including vector network analyzers, spectrum analyzers, signal generators, power meters and oscilloscopes.
• Collaborate with cross-functional teams to define system requirements and ensure successful product integration.
• Document design methodologies, test results and engineering specifications.
• Support product transition from development through production and manufacturing validation.

Connaissances

RF Design

Doherty PAs

RF Simulation

Impedance Matching

LabVIEW

MATLAB

PCB Design

Troubleshooting

4G/5G Knowledge

Communication

Formation

Bachelor's degree in Electrical Engineering

Outils

ADS

AWR Microwave Office

HFSS

CST

Description du poste

Sumitomo Electric Device Innovations USA, Inc. in Dallas, TX is seeking an experienced RF Design Engineer to design and optimize Doherty Power Amplifiers for advanced wireless applications.

The role focuses on development, testing, and validation of high-performance RF power amplifier solutions in our lab. You will work with ADS/AWR HFSS/CST, develop schematics, select components, review PCB layouts, and analyze performance metrics such as efficiency, gain, ACLR, EVM, and thermal behavior.