/Innovative measurements techniques for 6G radios

Innovative measurements techniques for 6G radios

PhD - Leuven | More than two weeks ago

Mm-Wave Large-Signal Measurements for the Modelling of Emerging III-V and III-N Transistors

The deployment of mmWave 5G and 6G radio systems pushes the requirements on device performance further than ever: achieving very high-power efficiency at mmWave frequencies becomes critical. Therefore, new III-V and III-N technologies are currently being developed at imec. The strong value is that these emerging technologies are compatible with large scale Si manufacturing, which is an important benefit to reduce fabrication costs.

In this context, it is key to evaluate the new devices under small- and large-signal excitation at mmWave frequencies. For instance, the first 3 harmonics of a 28 GHz signal, which corresponds to the first band allocated to mmWave 5G systems, must be measured to obtain insights in the device’s large-signal behaviour and performance, but the state-of-art equipment available today for large-signal characterization is limited to 67 GHz, which drives the need for innovation.

 

In this PhD, you will develop advanced characterization techniques for nonlinear mmWave III-V and III-N devices.  You will use state-of-the-art equipment (vector network analyzers, large-signal network analyzers, load-pull, fast oscilloscope,...) and develop new benches, as well as related calibration and de-embedding methods for accurate on-chip characterization at mmWave frequencies. The measurement results will feed into imec’s technology optimization and device modelling.



Required background: Master’s degree in Engineering Science. Interest in RF/microwave techniques and semiconductor physics.

Type of work: 60% experimental 30% modeling 10% literature

Supervisor: Dominique Schreurs

Co-supervisor: Bertrand Parvais

Daily advisor: Bertrand Parvais

The reference code for this position is 2022-045. Mention this reference code on your application form.