Abstract:
An ultra-large-scale integrated (ULSI) circuit includes MOSFETs which have different threshold voltages and yet have the same channel characteristics. The MOSFETs include gate structures with a polysilicon material. The polysilicon material is implanted with lower concentrations of germanium where lower threshold voltage MOSFETs are required. Over a range of 0-60% concentration of germanium, the threshold voltage can be varied by roughly 240 mV.
Abstract:
The inventive method and apparatus provides improved semiconductor devices, such as MOSFET's with a delayed threshold voltage roll-off and short channel effects, making the semiconductor devices more tolerant of gate variations for short gate length devices. The invention provides a semiconductor device with an asymmetric channel doping profile. A first pocket dopant implantation with a 0° tilt is used to create a first source dopant pocket and a drain dopant pocket. A second pocket dopant implantation with a 30-60° tilt creates a second source dopant pocket without creating an additional drain dopant pocket, thus creating the asymmetric doping profile.
Abstract:
A field effect transistor is fabricated to have elevated drain and source contact structures with prevention of short-channel effects and leakage current which may result due to the formation of facetted surfaces on the elevated drain and source contact structures near the gate of the field effect transistor. The field effect transistor includes a drain extension implant, a source extension implant, a gate dielectric, a gate structure disposed over the gate dielectric, and a first spacer disposed on sidewalls of the gate dielectric and of the gate structure. An elevated drain contact structure is selectively grown on the drain extension implant and has a drain facetted surface facing toward the first spacer on the sidewall of the gate structure. Similarly, an elevated source contact structure is selectively grown on the source extension implant and has a source facetted surface facing toward the first spacer on the sidewall of the gate structure. A second spacer is formed to cover the drain facetted surface and the source facetted surface before dopant implantation into and silicide formation on the elevated drain and source contact structures. In this manner, the dopant is prevented from being implanted into the drain facetted surface and the source facetted surface such that short-channel effects are minimized in the field effect transistor of the present invention. In addition, formation of silicide on the drain facetted surface and the source facetted surface is prevented to minimize leakage current through the drain and source extension implants of the field effect transistor of the present invention.
Abstract:
A punch-through diode transient suppression device has a base region of varying doping concentration to improve leakage and clamping characteristics. The punch-through diode includes a first region comprising an n+ region, a second region comprising a p- region abutting the first region, a third region comprising a p+ region abutting the second region, and a fourth region comprising an n+ region abutting the third region. The peak dopant concentration of the n+ layers should be about 1.5E18 cm.sup.-3, the peak dopant concentration of the p+ layer should be between about 1 to about 5 times the peak concentration of the n+ layer, and the dopant concentration of the p- layer should be between about 0.5E14 cm.sup.-3 and about 1.OE17 cm.sup.-3. The junction depth of the fourth (n+) region should be greater than about 0.3 .mu.m. The thickness of the third (p+) region should be between about 0.3 .mu.m and about 2.0 .mu.m, and the thickness of the second (p-) region should be between about 0.5 .mu.m and about 5.0 .mu.m.
Abstract:
Disclosed are polyol premix compositions, and foams formed therefrom, which comprise a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, and a catalyst system that includes a bismuth-based metal catalyst. Such catalysts may be used alone or in combination with an amine catalyst and/or other non-amine catalysts.
Abstract:
A method for reporting channel state information is provided in the invention, which includes: an eNB (eNodeB) indicating UE to feed back CSI (channel state information) reporting of one or multiple component carriers at a time; the UE feeds back the CSI reporting of one or multiple component carriers at a time according to the indication of eNB. The invention also provides an eNB, which is configured to: indicate UE to feed back CSI reporting of one or multiple component carriers at a time. In the invention, the problem how the UE performs channel state information reporting for multiple (downlink) component carriers in the LTE-A system is solved, which can not only ensure the reliability of transmitting channel state information but also reduce the feedback delay of channel state information as soon as possible.
Abstract:
Sensors suitable for the sensing/detection of biological or chemical agents may be fabricated by immobilizing biological and/or chemical recognition components (selectors or probes) on a substrate by the polymerization of a suitable monomer in the presence of the selectors or probes, for example, by Polysiloxane Monolayer Immobilization (PMI). PMI may involve the polymerization of polysiloxane onto a substrate, onto which selector molecules are adsorbed or otherwise immobilized. The resulting immobilized selector molecule may then be used to interact with specific molecules (targets) within a mixture of molecules, thereby enabling those specific molecules to be detected and/or quantified.
Abstract:
The disclosure provides a physical uplink control channel (PUCCH) power control method. A user equipment (UE) determines a power control parameter nHARQ for a PUCCH format 3 transmission and performs power control on the PUCCH format 3 based on the nHARQ. The disclosure also provides a PUCCH power control apparatus. According to the disclosure, for a TDD system, the power control parameter nHARQ for the PUCCH format 3 transmission may be determined, which efficiently solves the problem regarding power control when feedback is performed in PUCCH format 3.
Abstract:
A logging system includes an event receiver and a storage manager. The receiver receives log data, processes it, and outputs a column-based data “chunk.” The manager receives and stores chunks. The receiver includes buffers that store events and a metadata structure that stores metadata about the contents of the buffers. Each buffer is associated with a particular event field and includes values from that field from one or more events. The metadata includes, for each “field of interest,” a minimum value and a maximum value that reflect the range of values of that field over all of the events in the buffers. A chunk is generated for each buffer and includes the metadata structure and a compressed version of the buffer contents. The metadata structure acts as a search index when querying event data. The logging system can be used in conjunction with a security information/event management (SIEM) system.
Abstract:
A radio frame and method are provided for sending a sounding reference signal (SRS) in a mobile communication system, which is used to solve the problem of shortage of resources for sending the SRS in the mobile communication system. The method includes a user equipment (UE) sending the SRS to eNB in time-frequency resources corresponding to a guard space in the radio frame, wherein, the guard space is one or more of downlink to uplink guard space, uplink to downlink guard space, reserved subframes, or reserved idle resources. A device is also provided for sending the SRS, applied to the UE in the mobile communication system, wherein the device includes a radio frame construction module and a sounding reference signal transmission module.