Abstract: An AC switching arrangement is provided with an energy transfer arrangement connected in parallel with a switching mechanism. The energy transfer arrangement comprises a capacitance arrangement and a diode arrangement. The switching mechanism normally closed in a first state, and on reception of a signal indicating the second state, the switching mechanism is arranged to open. When the switching mechanism is in the second state, the diode arrangement is arranged in each AC half cycle to enable energy (source energy, stored inductance energy, etc.) to transfer from the grid to the capacitance arrangement but to prevent energy transfer from the capacitance arrangement back to the grid.

Abstract: An AC switching arrangement is provided with an energy transfer arrangement connected in parallel with a switching mechanism. The energy transfer arrangement comprises a capacitance arrangement and a diode arrangement. The switching mechanism normally closed in a first state, and on reception of a signal indicating the second state, the switching mechanism is arranged to open. When the switching mechanism is in the second state, the diode arrangement is arranged in each AC half cycle to enable energy (source energy, stored inductance energy, etc.) to transfer from the grid to the capacitance arrangement but to prevent energy transfer from the capacitance arrangement back to the grid.

Abstract: The present invention provides a fault current limiter apparatus comprising: a fault current limiter including: a magnetically saturable core, at least one AC coil wound on at least a portion of the magnetically saturable core, and a magnetic biasing arrangement for magnetically biasing at least a portion of the magnetically saturable core; a source terminal for electrically connecting the fault current limiter to a power source, and a load terminal for electrically connecting the fault current limiter to a load, wherein the at least one AC coil of the fault current limiter is electrically connected between the source and load terminals, and wherein the fault current limiter has a first inductance in normal conditions and a second inductance in fault conditions; a first capacitance electrically connected between the source and load terminals, wherein the first capacitance is electrically connected in series with the fault current limiter, and wherein the first capacitance has a capacitance that is arranged to

Abstract: A fault current limiter is provided that comprises a fault current limiter comprising first, second and third magnetically saturable cores.

Abstract: An energy generation system and method are presented for use in operating a heat engine. The energy generation method comprises: reducing a CO2 gas into CO and O2 gases; reacting said CO and O2 gases, thus combusting the CO gas, and yielding a substantially pure CO2 outlet gas; and supplying said CO2 outlet gas to the heat engine as a working gas in its heat-to-work generation process.

Abstract: An energy generation system and method are presented for use in operating a heat engine. The energy generation method comprises: reducing a CO2 gas into CO and O2 gases; reacting said CO and O2 gases, thus combusting the CO gas, and yielding a substantially pure CO2 outlet gas; and supplying said CO2 outlet gas to the heat engine as a working gas in its heat-to-work generation process.

Abstract: A system and method of removing discrete spurious signals in cable broadband environments as well as in other RF environments employs either non-decision directed or decision directed techniques in order to remove the discrete spurious signals. The non-decision directed technique converts the signal of interest such that the spurious signal's frequency is approximately zero, filters out the converted spurious signal, and then reconverts the signal of interest back to its original location. The decision directed technique employs a decision mechanism such as a slicer to regenerate a spurious signal that is subtracted from the signal of interest containing the actual spurious signal such that the actual spurious signal is removed from the signal of interest.

Abstract: A technique associated with transceiver systems solves transmitter impairments when the system has both receiver and transmitter operating with the same local oscillator frequency but with independent phase and gain impairments.

Abstract: A sampling method implements direct RF sampling of the down-stream DOCSIS and Euro-DOCSIS cable plant signals present at the customer premises equipment (CPE).

Abstract: A scheme to provide a spectral view of the signals present at the customer premises equipment by the network operator and includes a digital signal processor (DSP) or other signal processing apparatus integrated into a customer premises equipment (CPE) tuner in which the DSP or other signal processing apparatus is operational to perform a spectral analysis.

Abstract: A method of enhancing power amplifier linearity includes steps to ensure power amplifier spectral purity in cable broadband environments as well as in other RF environments. The technique employed may be either non-decision directed or decision directed. The non linearity products are canceled by processing the signal before it is introduced to the power amplifier, using an open or closed loop to estimate the non-linear coefficients of the amplifier transfer function polynomial. The inverse polynomial is then constructed; and the signal is applied to this inverse polynomial. The output of this operation is fed into the amplifier (subsequent to digital to analog conversion). The foregoing signal processing along with the amplifier parameters results in a reduction of harmonics and intermodulation products.

Abstract: A system and method of removing discrete spurious signals in cable broadband environments as well as in other RF environments employs either non-decision directed or decision directed techniques in order to remove the discrete spurious signals. The non-decision directed technique converts the signal of interest such that the spurious signal's frequency is approximately zero, filters out the converted spurious signal, and then reconverts the signal of interest back to its original location. The decision directed technique employs a decision mechanism such as a slicer to regenerate a spurious signal that is subtracted from the signal of interest containing the actual spurious signal such that the actual spurious signal is removed from the signal of interest.

Abstract: A technique associated with transceiver systems solves transmitter impairments when the system has both receiver and transmitter operating with the same local oscillator frequency but with independent phase and gain impairments

Abstract: A sampling method implements direct RF sampling of the down-stream DOCSIS and Euro-DOCSIS cable plant signals present at the customer premises equipment (CPE).

Abstract: A scheme to provide a spectral view of the signals present at the customer premises equipment without requiring an operator to visit the customer's site comprises a DSP or other signal processing apparatus integrated into a CPE tuner in which the DSP or other signal processing apparatus is operational to perform a spectral analysis. The scheme is particularly useful in cable broadband applications, other RF applications, and specifically point to multi-point applications.