Intern, RF Engineering, OEM (Hopkins, MN)

Since 1985, Digi International has been a pioneer in wireless communication, forging the future for connected devices and responding to the needs of the people and enterprises that use them. Before the Internet of Things was a thing, we built M2M and IoT devices, adapted to evolving network standards, and optimized data communications around the most advanced protocols and emerging technologies. From radio frequency modems to gateways, cellular routers, networking devices, embedded system-on-modules (SOM) and single-board computers (SBCs), Digi's solutions have continually grown to serve an extensive breadth of applications across the IoT landscape. Today, our IoT offerings include sensor-based solutions, a sophisticated platform for remotely monitoring device deployments of any size, anywhere, as well as professional design, implementation and certification teams to help you carry out your vision, no matter how large or small.

We are seeking a highly motivated RF Engineering Intern to support the Wireless Design Services HW/RF team throughout the summer. The intern will work closely with senior RF engineers to design circuits, validate and test hardware, assist with simulation and antenna design projects, and contribute to internal tool development and automation initiatives. This role offers hands‑on exposure to LTE, Wi‑Fi, Bluetooth, and LoRa radio technologies, along with practical experience in RF/HW product development.

 

Location: Hopkins, MN

 

• Support RF and hardware design activities, including component selection, schematic entry, and design documentation.
• Assist in design verification testing (DVT) for new hardware designs.
• Contribute to root-cause analysis, troubleshooting, and corrective‑action efforts for RF and HW issues.
• Gain exposure to soldering techniques and use of standard engineering test equipment (oscilloscopes, DMMs, spectrum analyzers, VNAs, etc.).
• Develop or enhance automation tools (Python, Excel, Power BI) to streamline data processing, modeling workflows, or engineering reporting.
• Participate in antenna characterization tasks such as tuning, matching, and test data collection.
• Document engineering work products, test methods, analysis processes, and project outcomes.
• Present end-of-internship findings to engineering leadership.

 

• Pursuing a degree in Electrical Engineering or a related discipline.
• Understanding of fundamental RF principles, including:
• Smith Chart interpretation
• Antenna design basics
• Filters, matching networks, and impedance concepts
• Basic understanding of LTE, Wi‑Fi, Bluetooth, and LoRa radio technologies.
• Strong analytical, troubleshooting, and problem‑solving skills.
• Familiarity with data analysis tools such as Excel, Python, or MATLAB.
• Clear communication skills and a willingness to learn in a fast‑paced environment.

 

• Coursework or hands‑on experience in RF Engineering, wireless communication systems, circuit design, or antenna theory.
• Experience writing Python scripts for data manipulation, automation, or engineering workflows.
• Exposure to CAD tools (Altium, ADS, HFSS, CST, etc.) is a plus.
• Exposure to antenna simulation tools (HFSS) is a plus

 

By the conclusion of the internship, the candidate will:

• Gain hands‑on experience with HW/RF product design and testing, including:
• Schematic design and review in Altium Designer
• Laboratory testing and measurement of RF/HW prototypes
• Antenna tuning, matching, and performance characterization
• Produce clear, reusable technical documentation, including test reports, design notes, or tool user guides.
• Develop and deliver a final presentation summarizing project work, test results, tools developed, and overall impact.
• Demonstrate measurable growth in RF engineering fundamentals, laboratory skills, data analysis, and professional communication.

• Gain laboratory testing experience
  • Learn how to use one new piece of RF lab equipment and demonstrate efficiency to Sr. Engineer
  • Set up and test a design with limited assistance
• Gain Altium experience
  • Learn how to use Altium
  • produce a circuit design from scratch using Altium by end of summer
• AI Usage
  • lean how AI can help RF engineers improve their work
  • use at least 1 AI driven tool within daily work (ie, Co-Pilot)

 

Candidates must have valid authorization to work in the United States without the need for current or future employer sponsorship. While this is an internship role, Digi International and its companies are not able to provide visa sponsorship for internships, or subsequent potential full-time employment. As a result, we are unable to consider visa applications.