Staff PLL Mixed Signal Design Engineer San Diego, California, United States

GreenWave Radios; California (MO); On-site; USD 125,000 - 150,000; Full time

Job summary

An established industry player is seeking a Staff Engineer in PLL Mixed Signal Design to join their dynamic RFA Engineering Group. This role offers a unique opportunity to work on cutting-edge O-RAN 5G digital radio solutions, contributing to the design of high-performance analog components and integrated transceivers. You will collaborate with a talented team of engineers, utilizing your expertise in RF and mixed-signal design to impact innovative projects. If you are passionate about technology and eager to take ownership of your work in a fast-paced environment, this position is perfect for you.

Qualifications

• 10+ years of experience in RF and mixed-signal IC design is essential.
• Strong understanding of RF transceiver architectures and CMOS fundamentals.

Responsibilities

• Design and mass-produce highly integrated transceivers using RF CMOS technology.
• Collaborate with engineers to define specifications and conduct simulations.

Skills

RF and mixed-signal IC design

Analytical skills

Problem-solving skills

Communication skills

Team collaboration

Education

MSEE

Tools

Cadence Virtuoso suite

Matlab

Calibre

PVS

EMX

PERC

Job description

InnoPhase Inc., DBA GreenWave Radios, is at the forefront of innovation in Open RAN digital radios. Our cutting-edge solutions, powered by the Hermes64 RF SoC, are designed to enhance network energy efficiency while dramatically reducing operational expenses, with purpose-built silicon that is the heart of ORAN-based active antenna arrays.

Headquartered in San Diego, California, GreenWave Radios has established itself as a pioneer in delivering power-efficient digital-to-RF solutions. The company is supported by a talented team of over 100 engineers spread across four global R&D facilities. With an extensive portfolio of more than 120 global patents, GreenWave Radios continues to push the boundaries of radio technology and innovation.

Staff Engineer, PLL Mixed Signal Design in the RFA Engineering Group, you’ll play a critical role in a fast-paced, collaborative environment. You will be deeply involved in various aspects of mixed-signal design, including working with data converters (ADC, DAC, TDC) and digitally controlled analog/RF circuits. This is an excellent opportunity for a motivated individual who enjoys taking ownership of projects and making a significant impact within a smaller, dynamic team.

This role provides an exciting opportunity to contribute directly to developing cutting-edge O-RAN 5G digital radio solutions. If you are passionate about mixed-signal design and want to have a meaningful impact in a collaborative environment, we encourage you to apply.

This position is based in San Diego, CA.

Key Responsibilities:

• Contribute to the design and mass production of highly integrated transceivers using deep sub-micron RF CMOS technology
• Design high-performance analog components such as PLLs, PFDs, charge pumps, loop filters, VCOs, MMD, dividers, LOs, XTALs, frequency multipliers, and more
• Assist with layout activities and perform post-layout LPE simulations and analysis
• Collaborate with System Engineers to define block-level specifications based on product requirements
• Conduct behavioral model simulations (using Matlab, Verilog) to evaluate system performance and refine block-level specifications
• Partner with System Engineers to develop algorithms and methods for mitigating circuit impairments through calibration, compensation, pre-distortion, and other techniques
• Work closely with Digital Designers for RTL implementation and validation of proposed methods and algorithms
• Collaborate with Test Engineers to define, develop, and implement a comprehensive test plan, including ATE solutions for production ramp-up.
• Participate in post-silicon bring-up, performance characterization, optimization, and debugging
• Perform testing and verify product performance using lab instruments
• Prepare and present clear, concise design-related documentation

Job Requirements:

• MSEE with 10+ years of experience in high-performance RF and mixed-signal IC design using advanced CMOS processes
• Experience designing mass-produced, highly integrated transceivers using deep sub-micron RF CMOS technology
• Strong understanding of RF transceiver architectures and their trade-offs
• Excellent knowledge of RF CMOS fundamentals, including transistor-level design and implementation of fractional-N PLLs, sigma-delta PLLs, VCOs, etc.
• Expertise in loop design optimization for parameters like phase noise/jitter, spurs, locking time, and area
• Deep understanding of CMOS device operation and construction
• Familiarity with IC layout, full IC design flow, and verification
• Strong analytical, problem-solving, and intuitive skills with attention to detail and a commitment to quality
• Hands-on experience with evaluating silicon on the bench and making precise measurements using typical lab equipment
• Proficiency in using development tools such as Cadence Virtuoso suite, EMX, Calibre, PVS, Matlab, and PERC
• Ability to work efficiently in a team, with a strong sense of urgency to meet product timelines
• Ability to work independently and manage multiple tasks simultaneously
• Experience working with multi-site teams
• Excellent written and verbal communication skills, with the ability to clearly explain circuit and system design decisions in both internal and external documentation
• Direct experience with 4G/5G, WiFi and Bluetooth products is preferred