摘要:
A microresonator comprising a single-crystal silicon resonant element and at least one activation electrode placed close to the resonant element, in which the resonant element is placed in an opening of a semiconductor layer covering a substrate, the activation electrode being formed in the semiconductor layer and being level at the opening.
摘要:
A method for forming a variable capacitor including a conductive strip covering the inside of a cavity, and a flexible conductive membrane placed above the cavity, the cavity being formed according to the steps of: forming a recess in the substrate; placing a malleable material in the recess; having a stamp bear against the substrate at the level of the recess to give the upper part of the malleable material a desired shape; hardening the malleable material; and removing the stamp.
摘要:
Semiconductor devices, such as laterally diffused metal oxide semiconductor (LDMOS) devices, are described that have a field plate connected to a gate of the device. In one or more implementations, the semiconductor devices include a substrate having a source region of a first conductivity type and a drain region of the first conductivity type. A gate is positioned over the surface and between the source region and the drain region. The gate is configured to receive a voltage so that a conduction region may be formed at least partially below the gate to allow majority carriers to travel between the source region and the drain region. The device also includes a field plate at least partially positioned over and connected to the gate. The field plate is configured to shape an electrical field generated between the source region and the drain region when a voltage is applied to the gate.
摘要:
Semiconductor devices, such as LDMOS devices, are described that include an interlayer-dielectric layer (ILD) region having a thickness of at least two and one half (2.5) microns to increase the maximum breakdown voltage. In one or more implementations, the semiconductor devices include a substrate having a source region and a drain region formed proximate to a surface of the substrate. A gate is positioned over the surface and between the source region and the drain region. An ILD region having a thickness of at least two and one half (2.5) microns is formed over the surface and the gate of the device. The device also includes one or more field plates configured to shape an electrical field generated between the source region and the drain region when a voltage is applied to the gate.
摘要:
In accordance with the present invention, accurate and easily controlled sloped walls may be formed using AlN and preferably a heated TMAH for such purpose as the fabrication of MEMS devices, wafer level packaging and fabrication of fluidic devices. Various embodiments are disclosed.
摘要:
Embodiments of the present invention provide systems, devices and methods for improving both the bandwidth of a BAW resonator bandpass filter and the suppression of out-of-band frequencies above the passband. In various embodiments of the invention, blocker inductors are located in series between the filter input and the filter output to realize both bandwidth enhancement and improved out-of-band frequency rejection. For example, a first blocker inductor may be located at the input and a second blocker inductor may be located at the output of a BAW resonator bandpass filter.
摘要:
Methods of contacting the top layer in a BAW device by depositing a metal layer over the BAW device, patterning the metal layer so that the metal layer extends over and contacts the top electrode layer of the BAW device only at a plurality of spaced apart locations adjacent the periphery of the active resonator area, and has a common region laterally displaced from the top and bottom electrodes and electrically interconnecting the parts of the metal layer extending over and contacting the top electrode of the BAW device at the plurality of spaced apart locations.
摘要:
Methods of contacting the top layer in a BAW device by depositing a metal layer over the BAW device, patterning the metal layer so that the metal layer extends over and contacts the top electrode layer of the BAW device only at a plurality of spaced apart locations adjacent the periphery of the active resonator area, and has a common region laterally displaced from the top and bottom electrodes and electrically interconnecting the parts of the metal layer extending over and contacting the top electrode of the BAW device at the plurality of spaced apart locations.
摘要:
A microelectromechanical system includes separate conducting elements. An electromechanically deformable element can be switched between a first stable position and a second stable position. Contact elements allow for electrical continuity to be established between the separate conducting elements. Switch control elements ensure that the first deformable element switches so as to establish electrical continuity between the separate conducting elements in the second stable position, by contact between the contact elements, and to break electrical continuity by separating the contact elements in the first stable position. The separate conducting elements and the contact elements are carried by the deformable element.
摘要:
A semiconductor device is described that includes a first electrical circuit and a second electrical circuit formed on a semiconductor on insulator wafer. The semiconductor on insulator wafer has a layer of semiconducting material formed over a buried layer of insulating material formed over a supporting layer of material. A wide deep trench is formed in the semiconductor on insulator wafer to galvanically isolate the first electrical circuit from the second electrical circuit. The first electrical circuit and the second electrical circuit are coupled together for exchanging energy between the galvanically isolated electrical circuits.