Abstract:
An inductive component (1), especially intended to be incorporated into a radiofrequency circuit, comprising: a substrate layer (2); a flat inductor formed from a metal strip (3) wound in a spiral; wherein: the substrate layer (2) is made of quartz; the metal strip (3) is made of copper and has a thickness (E3) of greater than 10 microns.
Abstract:
A monolithic integrated circuit (1) incorporating an inductive component (2) and comprising: a semiconductor substrate layer (2); a passivation layer (4) covering the substrate layer (2); metal contact pads (5) connected to the substrate (2) and passing through the passivation layer (4) in order to be flush with the upper face (6) of the passivation layer (4); which circuit also includes a spiral winding (20) which forms an inductor and lies in a plane parallel to the upper face (6) of the passivation layer (4), said winding (20) consisting of copper turns (21-23, 27, 28) having a thickness of greater than 10 microns, the winding ends forming extensions (12) which extend below the plane of the winding (20) and are connected to the contact pads (5).
Abstract:
Process for fabricating electronic components, of the variable capacitor or microswitch type, comprising a fixed plate (1) and a deformable membrane (20) which are located opposite each other, which comprises the following steps, consisting in: depositing a first metal layer on an oxide layer (2), said first metal layer being intended to form the fixed plate; depositing a metal ribbon (10, 11) on at least part of the periphery and on each side of the fixed plate (1), said ribbon being intended to serve as a spacer between the fixed plate (1) and the deformable membrane (20); depositing a sacrificial resin layer (15) over at least the area of said fixed plate (1); generating, by lithography, a plurality of wells in the surface of said sacrificial resin layer; depositing, by electrolysis, inside the wells formed in the sacrificial resin (15), at least one metal region intended to form the deformable membrane (20), this metal region extending between sections of the metal ribbon (10, 11) which are located on each side of said fixed plate (1); removing the sacrificial resin layer (15).
Abstract:
Inductive microcomponent (1), such as a microinductor or microtransformer, comprising a metal winding (2) having the shape of a solenoid, and a magnetic core (4) including a strip made of a ferromagnetic material, positioned at the center of the solenoid (2), and characterized in that the core comprises at least one additional strip made of a ferromagnetic material (13), separated from the other strip (12) by a spacer layer (14) made of a non-magnetic material, the thickness of which is such that the strips (12, 13) located on either side of the spacer layer (14) are antiferromagnetically coupled.
Abstract:
Micro-composant électronique réalisé à partir d'un substrat, et intégrant une structure capacitive réalisée au-dessus d'un niveau de métallisation (3) présent dans le substrat (2), ladite structure capacitive comportant deux électrodes (4,7), caractérisé en ce que:
la première électrode (4) comporte une pluralité de lamelles métalliques (14,24,34) empilées les unes au-dessus des autres, et séparées les unes des autres par des tronçons (18,28) de moindre largeur réalisés à partir du même métal, la seconde électrode (7) recouvre la première électrode (4) en comportant une pluralité de lamelles (31,32) intercalées entre les lamelles (14,24,34) de la première électrode (4).
Abstract:
L'invention concerne un procédé permettant de fabriquer des composants électroniques incorporant un micro-composant inductif, disposé au dessus d'un substrat. Un tel composant comporte :
une succession de couches (10,10a) de matériau à faible permittivité relative séparées par des couches de masque dur (12), la première couche de matériau à faible permittivité relative, reposant sur la face supérieure du substrat (1) ; un ensemble de spires métalliques (30-31), définies au-dessus de la succession de couches (10, 10a) de matériau à faible permittivité relative ; une couche (15) barrière à la diffusion du cuivre, interposée entre les spires métalliques (30-31) et la couche sous-jacente de matériau à faible permittivité relative.
Abstract:
A MEMS electrical cross-point switch is provided that includes a microelectronic substrate, a magnetic element attached to the microelectronic substrate that is free to move in a predetermined direction in response to a magnetic field and an electrical element connected to the magnetic element for movement therewith to selectively switch electric current. In one embodiment the magnetic element and the electrical element are connected via a tethering device that acts as a platform for the magnetic and electrical elements. The electrical cross-point switch may also comprise a clamping element that serves to lock the switch in an open or closed position to circumvent the magnetic actuation of the switch. In another embodiment, the invention provides for a MEMS electrical cross-point switching array that includes a microelectronic substrate, a magnetic field source in circuit with said microelectronic substrate, a plurality of first and second electrical lines disposed on the microelectronic substrate in an array formation, and a plurality of the in-plane MEMS electrical cross-point switches as described above disposed at the cross point of a first and second electrical line. In one embodiment the array is configured in a NxN or NxM array having a series of crossing first and second electrical load lines. In another configuration the array has a series of first electrical load lines that extend radially from a central point of reference and a series of second electrical load lines that extend outward, in spoke-like fashion, from the central point of reference.
Abstract:
Microcomposant inductif (1), tel que micro-inductance ou microtransformateur, comportant un bobinage métallique (2) ayant la forme d'un solénoïde, et un noyau magnétique (4) incluant un ruban en un matériau ferromagnétique, positionné au centre du solénoïde (2), caractérisé en ce que le noyau comporte au moins un ruban supplémentaire en un matériau ferromagnétique (13), séparé de l'autre ruban (12) par une couche de séparation (14) en un matériau amagnétique dont l'épaisseur est telle que les rubans (12,13) situés de part et d'autre de la couche de séparation (14) sont couplés antiferromagnétiquement.
Abstract:
A multilayer structure with strong relative permittivity is made up of a number of distinct layers each with a thickness of less than 500 Angstrom and made from a base of hafnium dioxide, zirconium dioxide and alumina. The hafnium dioxide, zirconium dioxide and alumina are formed from alloys with the formula HfxZrtAly)z and their stoichiometry varies from layer to layer. The structure is made up of at least five layers and at least one of the outer layers is made up of alumina. The layers are deposited by atomic layer deposition.
Abstract:
A multilayer structure with strong relative permittivity is made up of a number of distinct layers each with a thickness of less than 500 Angstrom and made from a base of hafnium dioxide, zirconium dioxide and alumina. The hafnium dioxide, zirconium dioxide and alumina are formed from alloys with the formula HfxZrtAly)z and their stoichiometry varies from layer to layer. The structure is made up of at least five layers and at least one of the outer layers is made up of alumina. The layers are deposited by atomic layer deposition.