RF Product Development Engineer

Cohu, Inc.

Cohu RF Product Development Engineer designing and optimizing hardware for semiconductor test interfaces. Involves working with RF performance, project management, and cross-functional teams.

Posted 7/7/2026full-timeSaint Paul • Minnesota • 🇺🇸 United StatesJuniorWebsite

About the role

Key responsibilities & impact

Design and develop test interface solutions for semiconductor manufacturers used in high frequency markets including 5G, satellite communication, automotive radar, high performance compute, networking and general high speed digital applications.
Use finite element analysis and circuit simulation software (Ansys HFSS and AWR Microwave office) to simulate and optimize test interface hardware including test sockets, connectors, waveguides, cable interfaces, and PCB layouts – for high frequency (up to 100+ GHz)
Characterize RF performance of interface hardware including test sockets, connectors, waveguides, cable interfaces, and PCB layouts using a Vector Network Analyzer. Measurements include insertion loss, return loss, impedance, and crosstalk.
Analyze and correlate simulation to VNA measurement results
Research and apply theory of signal integrity concepts related to PCBs, test sockets and other interconnect technology.
Integrate sockets, PCBs, connectors, cabling and waveguides into interface hardware designs.
Provide design recommendations for next-generation products that consider both electrical and mechanical performance tradeoffs for high volume semiconductor test environments.
Provide technical support to customers for RF test interface applications
Recommend and facilitate design and use of test methods and fixturing for RF measurements
Review datasheets and device specifications and match interface hardware with RF applications
Generate RF test reports and presentations for new interface products
Present technical material to customers and at trade shows via Powerpoint presentations

Requirements

What you’ll need

Bachelor's degree in Electrical Engineering or equivalent
0-1 year of experience
Understanding of transmission line theory
Simulation using 3D electromagnetic and circuit level simulation tools and knowledge of s-parameters and Vector network analysis into the mmWave frequency range.
Understanding of calibration procedures and theory of VNA hardware
Experience applying RF theory to mechanical design
Use of mmWave products including waveguides and frequency extenders
Proven experience with project management and driving projects from concept to deliver of hardware
Familiar with Microsoft Office products including Word, Excel, PowerPoint, Teams and SharePoint
Strong verbal and written communications skills; ability to communicate effectively with both domestic and foreign colleagues/vendors.

Benefits

Comp & perks

Limited travel required for onsite technical discussions, installations and trade shows.
Strong verbal and written communication skills; ability to communicate effectively with both domestic and foreign colleagues/vendors.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

RF Theory Application3D Electromagnetic SimulationS-Parameters KnowledgeCalibration ProceduresMmWave Product Experience

Soft Skills

Strong Verbal CommunicationStrong Written Communication

Certifications

Bachelor's Degree in Electrical Engineering