Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Centre National De La Recherche Scientifique

Commissariat a L'energie Atomique

Université Brest Bretagne Occidentale

Jean-Philippe Michel

Michaël Quinsat

Bernard Viala

Marie-Claire Cyrille

Ursula Ebels

Stephan Borel

Patrick Villard

Yann Lamy

Mykhailo Zarudniev

Michaël Pelissier

Evangeline Benevent

Thibaut Sohier

Smaali Rafik

Patrick Queffelec

Anne-Sophie Royet

Gilles Simon

Thibault Sohier

Marie- Claire Cyrille

Device of the chip or electronic system-in-package type, comprising at least one element for protecting at least part of at least one face of the device, said protective element comprising at least:

Chip or system-in-package protection using the GMI effect

A demodulator of an FM signal modulated about a carrier frequency with a modulation frequency has an RF oscillator configured to be synchronized, under identical conditions of operation, with oscillations at first and second frequencies used in the FM signal to encode respective pieces of information. The oscillator has a magnetoresistive device; and a low-pass filter connected to an output electrode of the magnetoresistive device to filter an oscillating signal, generated by the oscillator and to a rendering terminal to provide, as a demodulated electrical signal, the filtered signal, the cut-off frequency fat &#x2212;3 dB of this filter being strictly lower than the frequency and higher than the modulation frequency.

Demodulator of a frequency-modulated electrical signal

A synthesizer includes a second frequency-synthesizing stage comprising a radiofrequency oscillator configured to oscillate at a frequency &#x3b1;fo when it is synchronized with a signal s(), where &#x3b1; is a rational number different from one such that &#x3b1;f=ft. The radiofrequency oscillator has a magnetoresistive device within which there flows a spin-polarized electrical current to generate a signal st(t) oscillating at the frequency ft on an output electrode connected to the rendering terminal. This device is formed by a stack of magnetic and non-magnetic layers, a synchronization terminal for synchronizing the frequency of the oscillating signal st(t) with the frequency of the signal received at the synchronization terminal. The synchronization terminal being connected to the output terminal of the first stage to receive the signal s().

Synthesizer of an oscillating signal

This variable-response magnetic radiofrequency device integrated into a substrate comprises:

Variable-response magnetic radiofrequency device

An oscillation detector having an RF oscillator configured to be synchronized with a first frequency and a comparator for distinguishing the synchronized state from the non-synchronized state of the radiofrequency oscillator on the basis of an oscillating signal produced by the radiofrequency oscillator and indicating the presence of oscillations in a frequency band around the first frequency in response to identifying the synchronized state and, in alternation, indicating the absence of oscillations in this frequency band otherwise.

Oscillation detector

The integrated microelectronics component comprises an electric conductor forming a transmission line element for a radio frequency electromagnetic wave. This electric conductor is surrounded at least partially by a preferably closed magnetic circuit, formed at least by superposition of a layer of ferromagnetic material having a saturation magnetization value greater than or equal to 800 kA/m and of a layer of magnetic material. The layer of magnetic material then generates a uniaxial magnetic anisotropy in the adjacent ferromagnetic layer. A high magnetization can then be combined with a high anisotropy, thus enabling operation in high frequency ranges, for example about 5 to 20 GHz.

Integrated microelectronics component for filtering electromagnetic noise and radio frequency transmission circuit comprising same

Growing community of inventors

Fontaine, France

Jean-Philippe Michel