Location: On site
Company: Doodle Labs - Robotics and Defense Technology
About Doodle Labs
Doodle Labs is a fast-growing technology company at the forefront of robotics and defense innovation. We build mission-critical communication systems that enable autonomous systems to operate in challenging environments. Our solutions are deployed worldwide in defense, industrial, and commercial applications, providing robust connectivity in demanding conditions.
We are seeking a Radio Frequency (RF) Engineer with a focus on Power Amplifier (PA) Design to lead the development of high-efficiency, high-linearity RF PA modules from concept through to production.
About the Job
The RF Engineer - PA Design will design, simulate, validate, and optimize power amplifier circuits operating between 0.2 and 7 GHz, with output power up to 50W. This role will be hands-on with testing, debugging, load-pull analysis, and documentation, and will require deep collaboration with system and hardware teams to deliver high-performance modules for advanced wireless systems.
What You'll Do
1. Design and Develop PA Circuits
- Lead PA module development including topology selection, schematic capture, and PCB layout.
- Design for efficiency, gain, and linearity across a broad frequency spectrum.
- Apply advanced impedance matching, stability analysis, and EM simulation techniques.
- Use simulation tools such as ADS, AWR, and optionally HFSS or CST for circuit and electromagnetic analysis.
- Perform load-pull measurements, S-parameter analysis, and linearity testing.
- Validate designs in the lab using VNAs, spectrum analyzers, signal generators, and power meters.
- Work closely with PCB layout engineers to ensure best practices in high-frequency design.
- Coordinate with system architects and digital/RF engineers to meet product specifications.
- Support product engineering with documentation, design reviews, and lessons learned.
- First 30 Days: Familiarize with existing PA architectures, tools, and lab setup. Begin schematic-level design of new PA circuit.
- First 60 Days: Complete first-pass design, initiate simulations, and guide initial PCB layout.
- First 90 Days: Validate the prototype in lab conditions; perform debugging, tuning, and generate a detailed test and evaluation report.
Who You Are
- PA Design Expert: Hands-on experience with RF power amplifier development, including load-pull, impedance matching, and performance tuning.
- Tool Savvy: Proficient in RF simulation tools (ADS, AWR) and experienced with EM solvers (HFSS or CST a plus).
- Lab-Ready Engineer: Skilled in testing with lab instruments such as VNAs, spectrum analyzers, and RF signal generators.
- Cross-Functional Collaborator: Proven ability to work with layout, digital, and product engineering teams.
- Detail-Oriented Designer: Committed to robust documentation and iterative improvement.
- High-Impact Role: Help define the next generation of high-performance wireless systems.
- Innovation Environment: Solve advanced RF engineering challenges in a collaborative setting.
- Career Growth: Work at the intersection of RF design, systems engineering, and product development.
- Mission-Critical Tech: Build solutions that matter for defense, robotics, and industrial autonomy.
- Education: Degree in Electrical Engineering, RF Engineering, or a related field.
- Experience: 5+ years in RF PA circuit design and validation.
What the Team is Saying
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What We Do
Doodle Labs designs and produces industrial-grade wireless networking solutions. The company focuses on mesh networking for robotic systems, providing high throughput, long-range Mesh Rider solutions for UAVs, UGVs, AMRs and other robotic applications.
The company’s Helix Mesh Rider Radio was developed with sponsorship from DIU and is the Blue UAS program’s datalink of choice.
Doodle Labs was named one Fast Company's "World's Most Innovative Companies 2024," checking in at no. 2 in the Robotics category. Doodle Labs was founded in 1999 and has offices in the United States and Singapore.
Why Work With Us
We are a fast-growing team working with some of the leading innovators creating the technology of the future. Our radios are being used to advance the development and deployment of robotics in various industries. It's been an exciting past few years and we're eager to bring on like-minded people to help us continue to build this company.
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Doodle Labs Offices
Hybrid Workspace
Employees engage in a combination of remote and on-site work.
