Abstract: Structures for a varactor diode and methods of forming same. The structure comprises a first semiconductor layer including a section on a substrate, a second semiconductor layer on the section of the first semiconductor layer, a third semiconductor layer on the second semiconductor layer, and a doped region in the section of the first semiconductor layer. The section of the first semiconductor layer and the doped region have a first conductivity type, and the second semiconductor layer comprises silicon-germanium having a second conductivity type opposite to the first conductivity type, and the third semiconductor layer has the second conductivity type. The doped region contains a higher concentration of a dopant of the first conductivity type than the section of the first semiconductor layer. The second semiconductor layer abuts the first section of the first semiconductor layer along an interface, and the doped region is positioned adjacent to the interface.

Abstract: Systems and methods for providing driver training in a virtual reality environment are disclosed. According to some aspects, an appropriate virtual reality driving simulation may be determined based on one or more input parameters provided by a user. The virtual reality driving simulation may include: (i) an instructional lesson, to be rendered in virtual reality, for teaching driving-related rules and/or skills to a user, and (ii) a driving scenario, to be rendered in virtual reality, for the user to practice the driving-related rules and/or skills taught by the instructional lesson. While the virtual reality driving simulation is rendered, user performance data may be recorded. Based on an analysis of the user performance data, a driving competency score and/or user feedback may be determined.

Abstract: Systems and methods for providing driver training in a virtual reality environment are disclosed. According to some aspects, an appropriate virtual reality driving simulation may be determined based on one or more input parameters provided by a user. The virtual reality driving simulation may include: (i) an instructional lesson, to be rendered in virtual reality, for teaching driving-related rules and/or skills to a user, and (ii) a driving scenario, to be rendered in virtual reality, for the user to practice the driving-related rules and/or skills taught by the instructional lesson. While the virtual reality driving simulation is rendered, user performance data may be recorded. Based on an analysis of the user performance data, a driving competency score and/or user feedback may be determined.

Abstract: Systems and methods for providing driver training in a virtual reality environment are disclosed. According to some aspects, an appropriate virtual reality driving simulation may be determined based on one or more input parameters provided by a user. The virtual reality driving simulation may include: (i) an instructional lesson, to be rendered in virtual reality, for teaching driving-related rules and/or skills to a user, and (ii) a driving scenario, to be rendered in virtual reality, for the user to practice the driving-related rules and/or skills taught by the instructional lesson. While the virtual reality driving simulation is rendered, user performance data may be recorded. Based on an analysis of the user performance data, a driving competency score and/or user feedback may be determined.

Abstract: The disclosure provides a tire pressure sensor assembly that includes a battery and a printed circuit board (PCB) configured with electronics to measure tire pressure and to transmit an electromagnetic signal related to the measured tire pressure. The PCB and battery are contained in a housing that allows the PCB and the battery to be angularly oriented with respect to each other. Such orientation permits the sensor to conform to the curved surface of the rim. An embodiment of the disclosed tire pressure sensor assembly is adapted to fasten to a valve stem via a metal terminal. The attachment configuration permits the valve stem assembly to deform as the valve stem is installed in a rim and also allows the valve stem to function as a portion of the antenna structure to facilitate transmitting the RF signal to a receiver.

Abstract: A tire pressure sensor assembly including a valve stem that can be preassembled and snap installed into a tire rim is disclosed. The tire pressure sensor assembly includes a valve stem and a printed circuit board configured with electronics for sensing tire pressure and transmitting radio frequency data related to tire pressure. The circuit board is rigidly connected to the valve stem. The valve stem and the electronics are contained in a unitary, integrated housing that is deformable to allow the valve stem portion of the assembly to be press fit into the rim opening. So installed, the assembly is securely mounted to the rim, but is no more time consuming to install than a conventional valve stem.

Abstract: The disclosure provides a tire pressure sensor assembly that includes a battery and a printed circuit board (PCB) configured with electronics to measure tire pressure and to transmit an electromagnetic signal related to the measured tire pressure. The PCB and battery are contained in a housing that allows the PCB and the battery to be angularly oriented with respect to each other. Such orientation permits the sensor to conform to the curved surface of the rim. An embodiment of the disclosed tire pressure sensor assembly is adapted to fasten to a valve stem via a metal terminal. The attachment configuration permits the valve stem assembly to deform as the valve stem is installed in a rim and also allows the valve stem to function as a portion of the antenna structure to facilitate transmitting the RF signal to a receiver.

Abstract: A tire pressure sensor assembly including a valve stem that can be preassembled and snap installed into a tire rim is disclosed. The tire pressure sensor assembly includes a valve stem and a printed circuit board configured with electronics for sensing tire pressure and transmitting radio frequency data related to tire pressure. The circuit board is rigidly connected to the valve stem. The valve stem and the electronics are contained in a unitary, integrated housing that is deformable to allow the valve stem portion of the assembly to be press fit into the rim opening. So installed, the assembly is securely mounted to the rim, but is no more time consuming to install than a conventional valve stem.