16/07/2021
The Human Resources Strategy for Researchers

M/F PhD student - Phased array design with lens at 39GHz for point to point communications

This job offer has expired


  • ORGANISATION/COMPANY
    CNRS
  • RESEARCH FIELD
    Computer science
    Engineering
    Mathematics
  • RESEARCHER PROFILE
    First Stage Researcher (R1)
  • APPLICATION DEADLINE
    06/08/2021 23:59 - Europe/Brussels
  • LOCATION
    France › SOPHIA ANTIPOLIS
  • TYPE OF CONTRACT
    Temporary
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    35
  • OFFER STARTING DATE
    01/09/2021

OFFER DESCRIPTION

This PhD is in the frame of EEMW4FIX project with the ambition to offer reliable, high data rate and low-power access to end-users by using advanced antenna architectures for future wireless backhauls and Fixed Wireless Access (FWA). To this end, EEMW4FIX aims at developing innovative low-profile, high-gain, and steerable beam smart antenna, using 3D-printed flat lens.
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More than one billion homes worldwide still lack a broadband Internet connection. In addition, power consumption related to telecommunication network is constantly increasing following data traffic exponential growth.
PhD will address 3 main unresolved challenges needed for mmW FWA:
- Drastically improving system energy efficiency of antenna system, RF front-end and beamforming algorithms. Back of the envelope calculations suggest that the EEMW4FIX approach can achieve a factor 10 of reduction in power consumption by combining 4 ingredients. The collimating gain provided by lens approach allows to reduce transmit power and increase reception sensitivity proportionally. The Massive MIMO system is realized via a lens antenna and beam space processing, which leads to beamforming algorithms with highly reduced computational complexity (which is normally cubic in the number of antennas). In addition, the number of activated antennas at any time in the feeding array is small compared to a classical antenna array in which all antenna elements are activated, leading to a significant reduction in the number of RF front-ends. Finally, the RF front-end thermal power will be harvested using integrated Peltier cells, further increasing the global system power efficiency.
- Design of low-profile highly-directive steerable beam antenna. Most solutions available today exhibit a limited number of switched beam angles, using transmitarray or conventional bulk lenses without any fine beam tuning capability. In EEMW4FIX, a flat full dielectric multifocal lens will be optimized to spatially couple with a steerable phased array to obtain a high and quasi-constant directivity for all steered angles while ensuring extremely low spillover loss. This lens will be monolithically integrated inside a radome by additive manufacturing. Such concept has never been studied.

More Information

Required Research Experiences

  • RESEARCH FIELD
    Engineering
  • YEARS OF RESEARCH EXPERIENCE
    None
  • RESEARCH FIELD
    Computer science
  • YEARS OF RESEARCH EXPERIENCE
    None
  • RESEARCH FIELD
    Mathematics
  • YEARS OF RESEARCH EXPERIENCE
    None

Offer Requirements

  • REQUIRED EDUCATION LEVEL
    Engineering: Master Degree or equivalent
    Computer science: Master Degree or equivalent
    Mathematics: Master Degree or equivalent
  • REQUIRED LANGUAGES
    FRENCH: Basic
Work location(s)
1 position(s) available at
Laboratoire d'électronique antennes et télécommunications
France
SOPHIA ANTIPOLIS

EURAXESS offer ID: 665414
Posting organisation offer ID: 23204

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