Open Post-doctoral position - Low cost testing of IoT transceivers - Sourcing an RF signal with digital tester channels

 “Low cost testing of IoT transceivers - Sourcing an RF signal with digital tester channels” 

Location: LIRMM, University of Montpellier/CNRS, France 

Funding: HADES European Project (Penta) 

Duration: 9 months, with possible extension 

Date: flexible starting date from Fall 2018 to Spring 2019 

Collaboration: NXP Semiconductors, Caen, France 

Position summary 

The general context of this post-doc is the development of low-cost methods to test RF devices, and more specifically a Smart Home Transceiver (2.4GHz) from NXP Semiconductors intended for Internet of Things (IoT) growing market. The conventional approach for testing such devices is specification-based testing, which relies on the direct measurement of the circuit performance parameters. This approach offers good test quality but at the price of extremely high testing costs, principally because it necessitates the use of dedicated testers equipped with sophisticated and expensive RF resources in order to generate and capture RF signals. Therefore, there is an immediate demand to develop new solutions that permits to reduce the testing costs of RF devices. 

The objective of the post-doc work is the development of a test solution that can be applied on standard digital tester. The main expected benefit resides in the dramatic reduction in the necessary test equipment since it permits to get rid of the expensive RF tester resources required for the conventional test method. Moreover, because digital channels are usually available in a large number on a standard ATE, it also offers the possibility to implement multi-site testing to further reduce the testing costs. 

More specifically, the work targets the generation of RF signals using only low-cost digital tester channels. The idea is to use several standard digital channels, to merge them as needed, in order to create the desired RF signal. For instance, by combining 10 digital channels with time-shifted pulses every 5ns (200MHz), it is possible to create an RF sine-wave signal at 2GHz. In this work, the objective will be to create, not only simple RF sine-wave signals, but modulated RF signals that comply with ZigBee and BLE standards. The main tasks will be, (i) to study the influence of digital channel defects (edge accuracy, rising/falling time …) on the RF signal parameters (mainly phase noise at various frequency offsets) and, (ii) to provide a tool to generate the digital bit stream required to create ZigBee and BLE (“Bluetooth Low Energy) modulated signals in the 2.4Ghz range. The developed solution will be demonstrated first in simulation (Matlab/Simulink), and then validated through hardware experiments on Verigy 93K ATE.

This work will be conducted in the context of PENTA European Project “HADES” that involves several academic laboratories and industrial partners. This work will be performed in close collaboration with NXP Semiconductors. 

Candidate Profile 

We are looking for an excellent candidate with a PhD degree in Engineering Electronics or Electrical Engineering. Solid knowledge in the field of electronics/microelectronics is necessary (competences in the RF domain will be appreciated). Experiences in digital signal processing and programming (Matlab) are also required. A good knowledge in applied mathematics (statistics) will be a plus. 

Fluency in English is mandatory; French language is not necessary. 

How to apply 

Send an email to azais@lirmm.fr with one PDF attachment, containing: 

 Detailed Curriculum Vitae 

 Publication List 

 Motivation Letter 

 A list of 2 to 3 reference persons and their contact information 

Contact Dr. Florence Azais 

LIRMM, University of Montpellier, CNRS 

161 rue Ada, 34 095 Montpellier Cedex 5, France 


+33 467 418625

Post-doctoral position - Microelectronics and Computer Engineering

Post-doctoral position at LIRMM-Montpellier (France) Microelectronics and Computer Engineering

About the opportunity:

Outstanding applicants are invited to join us to work on the topic of their choice in relation to embedded and/or integrated electronic systems ; including (but not limited to) new computing paradigms (quantum, approximate, in- and near-memory), machine learning, embedded and hardware security, emerging technologies, harsh and radiative environments, ultra-low power IoT, interactions with life, health and environment. Applicants are encouraged to prepare their project tackling disruptive and ambitious research with one or more researchers of the department. Selected candidates will join one of our research groups to develop his/her research in relation with our faculty members.

About you :

We seek for a highly motivated talent who holds a Ph.D. in Microelectronics or Computer engineering. Good track records, communication, technical and organizational skills are expected.  

The complete application should be submitted preferentially before the end of February 2019 to the head of the Microelectronics department, Prof. P. Nouet, by email at dir-sim@lirmm.fr.  The position is full-time, fixed-term for 1 year, available immediately, extendable, with a strong opportunity of transformation to a tenure position. Applications must include:

• a CV with names and addresses of three referees,

• a description of previous research and experiences with main achievements,

• a research program for one year or more.

Salary: 2,500€ - 3,000€/month.
About us :

LIRMM, the Montpellier Laboratory of Informatics, Robotics and Microelectronics, is a Joint Research Unit of University of Montpellier and the French National Center for Scientific Research (CNRS). We are undergoing scientific research onto three departments (Informatics, Microelectronics, Robotics). The Microelectronics department is developing cutting edge research on innovative solutions for embedding in integrated electronics systems more and more intelligence and emerging technologies in order to increase quality, reliability, flexibility, efficiency and security in such systems.  The department (about 30 faculty members) is organized in 3 groups:

• ADAC (ADAptive Computing) is focusing on the design of adaptive systems, that are able to self-manage in order to optimize their performance. http://www.lirmm.fr/lirmm_eng/recherche/equipes/adac 

• SmartIES (Smart Integrated Electronic Systems) whose activities are geared toward the design and modeling methods of systems and integrated circuits. http://www.lirmm.fr/lirmm_eng/research/teams/smarties 

• TEST (Test and dEpendability of microelectronic integrated SysTems) whose main objective is the development of models, methods and tools for ensuring the quality of electronics systems after manufacturing.  http://www.lirmm.fr/lirmm_eng/research/teams/test  

About the place of work :

Established in 1289, the University of Montpellier is one of the oldest universities in the world. The city of Montpellier is located in Southern France, close to the Mediterranean Sea, with flight and train connections to main French and European cities. With more than 60,000 students and praised quality of life, it is ranked as one of the best places to live and study in France.

Dernière mise à jour le 07/02/2019