Abstract: Described herein are novel devices and methods for the optical detection of oligonucleotide binding events for diagnostic, point-of-care, drug screening, and theranostic applications, for example, a robust and customizable system to detect specific DNA and RNA oligonucleotides using a carbon nanotube optical signal.

Abstract: Described herein are novel devices and methods for the optical detection of oligonucleotide binding events for diagnostic, point-of-care, drug screening, and theranostic applications, for example, a robust and customizable system to detect specific DNA and RNA oligonucleotides using a carbon nanotube optical signal.

Abstract: An arrangement is described in which phase parity or phase opposition between two signals can be determined, and if necessary remedial action may be taken.

Abstract: An arrangement for a transmitter and/or receiver which is adapted to allow carrier aggregation in a wireless communication system, comprising a plurality of radio frequency (RF) blocks, each of which is inherently adapted to operate substantially across (in the region of) one of the particular groups of frequency ranges. The number of groups may be 5 or less.

Abstract: A transceiver for RF signals uses receiving circuitry to derive control signals to reduce undesired signal frequencies in the output of the transmitting circuitry.

Abstract: Pairs of second-order filters with feedback and cross coupling may be used to implement pairs of complex poles. The cross coupling may be frequency-dependent cross coupling or frequency-independent cross coupling. Frequency independent cross coupling may include coupling an internal node of a biquad filter. The pairs of second-order filters can be used together to form a complex filter. The complex filter can be used to readily provide higher order poles. The resulting complex filter can achieve higher order poles while offering reduced circuit complexity.

Abstract: In general, the invention is directed to a tunable inductor that makes use of eddy current effect to tune the inductance of an inductor. The tunable inductor may include a spiral or helical inductor in proximity to one or more sets of eddy current coils. Each eddy current coil may be coupled to a corresponding switch that controls whether the eddy current coil is grounded or floating. In operation, a first time-varying current through the inductor induces a first magnetic field that, in turn, induces a time-varying voltage in an eddy current coil. If the eddy current coil is not grounded, an eddy current flows through the eddy current coil. The eddy current, which flows in the opposite direction of the first time-varying current, induces a second magnetic field. The second magnetic field, which opposes the first magnetic field, reduces the inductance of the tunable inductor.

Abstract: Pairs of second-order filters with feedback and cross coupling may be used to implement pairs of complex poles. The cross coupling may be frequency-dependent cross coupling or frequency-independent cross coupling. Frequency independent cross coupling may include coupling an internal node of a biquad filter. The pairs of second-order filters can be used together to form a complex filter. The complex filter can be used to readily provide higher order poles. The resulting complex filter can achieve higher order poles while offering reduced circuit complexity.