Enhanced Linearization Algorithms for 5G Systems - ON-617

Project type: Research
Desired discipline(s): Engineering - computer / electrical, Engineering
Company: Analog Devices
Project Length: 6 months to 1 year
Preferred start date: 05/02/2022
Language requirement: English
Location(s): Ottawa, ON, Canada; Canada
No. of positions: 1
Desired education level: Master's
Open to applicants registered at an institution outside of Canada: Yes

About the company: 

Analog Devices (ADI) is a global leader in the design and manufacturing of analog, mixed-signal, power management, and DSP integrated circuits. ADI is known for helping to solve its customers’ toughest engineering challenges. With a commitment to engineering for good. ADI strives to create a more sustainable future, while also focusing on its employees through mentoring programs, employee networks, and continuous learning opportunities.

Describe the project.: 

The realization of the upcoming 5th Generation of telecommunication standards (5G) requires ultra-broadband transceiver frontends that satisfy both power efficiency and linearity requirements. Since power amplifiers (PAs) are the most power-consuming blocks in these frontends, they are optimized to achieve higher efficiency, and hence lower operating cost and carbon footprint. However, high-efficiency PAs suffer from nonlinear behaviors that distort the signal quality and reduce their overall linearity.

This project tackles the abovementioned problem by proposing novel PAs linearization techniques that can extend the linearization bandwidth to over 400 MHz. First, a fully automated PAs characterization/linearization testbench with Nonlinear Vector Network Analyzer (NVNA) measurement capabilities will be realized. Then, a novel NVNA-based linearization approach will be investigated as a standalone linearization solution as well as a technique to improve existing Digital Predistortion (DPD) linearization solutions. These solutions will be implemented on Analog Devices Radio Verse (ADRV) 9009 platform which is composed of two state-of-the-art fully integrated transceivers having a bandwidth of 450MHz each. This project exploits the full capabilities of NVNA measurement and modeling techniques and alleviates the need to use very high-speed digital-to-analog converters, which represent one of the main challenges in extracting ultra-broadband DPD models.

Required expertise/skills: 

  • Assumes BS or MS in EE degree or equivalent relevant experience
  • Understanding of RF system design, RF Power Amplifier Design, and Characterizations
  • Proficiency in MATLAB, Labview & Python to control test instrumentation and to build interface GUI’s for the DPD and the Power Amplifier Characterizati on Bench
  • Familiar with Test Equipment: VNA, PNA-X, Spectrum Analyzer, Oscilloscope, etc…
  • Self-motivated, result-oriented, good teamwork and communication skills
  • Good problem solving and leadership attributes