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HRNPM_based low power receivers - Spintronic diodes based wake-up radios


Keywords: Harmonic rejection, Mixers, Low power, Spintronics

Abstract: The subject of the thesis, within the framework of the Swan-on-Chip project, has as its context low-power receivers, commonly called 'low power', with two orientations. The first concerns the study of a spintronic diode with inherent filtering and detection properties for an extra low power radio called a wake-up radio or 'wake-up radio' (WuR). The second study concerns the theme of the N-Path Filter (NPF for which several paths of switched capacitors are connected in parallel). The NPF is a direct competitor of the spintronic diode in terms of function while being realized in an integrated silicon CMOS technology. NPF blocks are very promising and promising in the industry with many possibilities for innovation. They offer inherent filtering properties, just like the spintronic diode. They require the presence of a subsequent detector, of course, but show better sensitivity. These circuits are very interesting in the context of broadband 'low power' detection with architectures called 'LNA-first', having one or more low noise amplifiers directly connected to the antenna and architectures called 'mixer-first'. ' where the mixer is directly behind the antenna.
Starting with 'LNA-first' architecture in order to promote a recent patent filed by the TIMA laboratory. Then, he will focus on the design of a 'mixer-first' architecture emulating the behavior of the spin diode and within the framework of which he will be able to develop a matching network and a comparator. In a third step, when the diode has been produced by the project partners, the matching network and the comparator can be reused and, in conjunction with the diode, constitute the fundamental blocks of a spintronic WuR.


Thesis director: Florence PODEVIN (TIMA - RMS)
Thesis started on: Jan. 2023
Doctoral school: EEATS

Submitted on February 21, 2023

Updated on December 12, 2023