377 results about "Spiral inductor" patented technology

A fully integrated, programmable mixed-signal transceiver comprising a radio frequency integrated circuit (RFIC) which is frequency and protocol agnostic with digital inputs and outputs, the transceiver being programmable and configurable for multiple radio frequency bands and standards and being capable of connecting to many networks and service providers. The RFIC does not use spiral inductors and instead includes transmission line inductors allowing for improved scalability. Components of the transceiver are programmable to allow the transceiver to switch between different frequency bands of operating. Frequency switching can be accomplished though the content of digital registers coupled to the components.

A printed circuit board (PCB) having a three-dimensional spiral inductor, which includes a plurality of insulating layers and conductor layers. The PCB comprises a plurality of coil conductor patterns made of conductive material and shaped into strips, which is provided on the plurality of conductor layers, respectively, such that the plurality of coil conductor patterns are parallel to each other and positioned on the same plane perpendicular to the conductor layers, and in which each of the plurality of coil conductor patterns is longer than an adjacent inner coil conductor pattern.

An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circuitry advantageously uses LC filters integrated onto the substrate in conjunction with image reject mixers to provide sufficient image frequency rejection. Filter tuning and inductor Q compensation over temperature are performed on chip. The filters utilize multi track spiral inductors with shields to increase circuit Q. The filters are tuned using local oscillators to tune a substitute filter, and frequency scaling during filter component values to those of the filter being tuned. In conjunction with filtering, frequency planning provides additional image rejection. The advantageous choice of local oscillator signal generation methods on chip is by PLL out of band local oscillation and by direct synthesis for in band local oscillator. The VCOs in the PLLs are centered using a control circuit to center the tuning capacitance range. A differential crystal oscillator is advantageously used as a frequency reference. Differential signal transmission is advantageously used throughout the receiver. ESD protection is provided by a pad ring and ESD clamping structure that maintains signal integrity. Also provided are shunts at each pin to discharge ESD build up. The shunts utilize a gate boosting structure to provide sufficient small signal RF performance, and minimal parasitic loading.

Apparatus and methods for dynamically controlling electric field distribution within tissue disposed at various depths beneath the skin at a target region of a patient's body by independently controlling the electric potential of each of a plurality of electrodes in relation to the electric potential of a ground pad. By controlling electric field distribution during a procedure, a target tissue at particular depths beneath the skin can be selectively heated relative to adjacent non-target tissue. At least one of the electrodes and the ground pad may comprise a spiral inductor comprising a substantially planar spiral of electrically conductive material.

The invention provides a semiconductor device provided with a spiral inductor and an electromagnetic wave shielding layer for demonstrating an excellent electromagnetic wave shielding effect without degrading a Q value. In the electromagnetic wave shielding layer arranged above or below the spiral inductor provided with a spiral pattern, an opening part in a magnetic flux passing area generated at the center of the spiral pattern by the spiral inductor and a slit from the opening part to a peripheral edge are formed.