Nxp B.v.

Nxp Usa, Inc.

Salvatore Drago

Lucien Johannes Breems

Jan Van Sinderen

Fabio Sebastiano

Frank Leong

Stefan Tertinek

Dominicus Martinus Wilhelmus Leenaerts

Bram Nauta

Gerard Villar Piqué

Raf Lodewijk Jan Roovers

Thomas Baier

Tarik Saric

Manuel Lafer

Wolfgang Hoess

Esa Petri Tarvainen

Gert Holler

Dominicus Martinues Wilhelmus Leenaerts

A method for power management for applications having duty-cycled high peak supply currents includes charging a buffer capacitor with a first current supplied by a battery, wherein the first current is limited by a current limiter. A load is supplied with a second current supplied by the buffer capacitor, wherein the second current comprises a pulsed current. The current limiter is controlled with at least one of a plurality of sensor inputs to limit a capacity degradation of the battery.

Power management for applications having duty-cycled high peak supply currents

A communication device and method include a reconfigurable receiver that is reconfigurable between communication, ranging and radar modes. The reconfigurable receiver includes a mixer configured to mix digital samples with a carrier phase estimate signal and configured to generate in-phase digital samples based on the carrier phase estimate. The reconfigurable receiver further includes a symbol correlator configured to correlate against the in-phase digital samples and generate correlated data, and a symbol binning unit configured to bin the correlated data and generate a first order channel impulse response estimate. The reconfigurable receiver yet further includes a multiplexer configured to switch the digital samples to the symbol binning unit when the reconfigurable receiver is configured in radar mode and to switch the correlated data to the symbol binning unit when the reconfigurable receiver is configured in a ranging mode.

Impulse-radio receiver and method

A moving object detector detects a moving object in a channel. The detection comprises the detector receiving a plurality of frames based on a transmitter transmitting a plurality of frames over a channel. One or more channel impulse responses (CIRs) of the channel is determined based on the received plurality of frames. The detector determines a CIR phase for each of the CIRs and a phase signal is formed based on a phase value of the CIR phase for each of the CIRs. The detector compares the phase signal with a target signal and detects the moving object in the channel based on the comparison.

Detecting a moving object based on a phase of channel impulse responses

The invention relates to frequency synthesizer circuits, and in particular to frequency synthesizer circuits characterized by a small channel spacing. Embodiments disclosed include a frequency synthesizer circuit for a radio receiver, the circuit comprising: a digitally controlled oscillator configured to generate an output signal with an output frequency on application of an oscillator enable signal; a delay module; configured to delay an input reference signal to generate a delayed reference signal; and a duty cycle module configured to modulate the oscillator enable signal based on a period of an input reference signal and the delay of the delayed reference signal, such that a ratio between the output frequency and the frequency of the input reference signal is a non-integer.

Frequency synthesizer circuit

A frequency converter, comprising a multi-phase local oscillator and a multi-phase mixer. The mixer comprises a plurality of mixer switches, each connected to a respective amplifier. The local oscillator is configured to provide a switching signal to each mixer switch, and comprises a plurality of inverters configured as a ring oscillator.

Frequency converter

Apparatus and methods concern down-converting a radio frequency (RF) signal. As an example, one apparatus includes a first mixer and a second mixer. The first mixer down-converts an RF signal to produce a first intermediate frequency (IF) signal. The second mixer down-converts the first IF signal to produce a second IF signal having a plurality of phase components. The down-converter also includes a plurality of summing circuits. Each of the summing circuits is configured to combine various ones of the phase components of the second IF signal to produce a respective phase component of a third IF signal. The number of phase components in the third IF signal is different from the number of phase components in the second IF signal.

Frequency down-conversion

A low power frequency synthesizer circuit for a radio transceiver, the synthesizer circuit comprising:

Frequency synthesiser

A phase estimator comprising a first input terminal configured to receive a first analog input signal; a second input terminal configured to receive a second analog input signal, wherein the second analog input signal is 90&#xb0; out of phase with the first analog input signal. The phase estimator is configured to provide a digital word representative of the phase of the first analog input signal and the second analog input signal. The phase estimator comprises a register configured to store N bits as a digital word a first reference signal generator, a second reference signal generator and a comparator.

Phase estimator

Communication networks are implemented using a variety of devices and methods. In a particular embodiment for use in a communication network having RF-communication devices that communicate using a RF protocol, an RF-communication device is implemented with an RF transceiver () to communicate over the network using the RF protocol and being controllable in a reduced power-consumption mode in which the RF transceiver does not communicate over the network. The device also includes an RF receiver () including an envelope detector () and a pulse generator circuit (). The envelope detector circuit () providing an envelope-based signal to a pulse generator circuit () that, in response to the envelope-based signal and after generating a number of pulses that exceeds a predetermined number of pulses, prompts the RF transceiver () to transition out of the reduced power-consumption mode.

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Eindhoven, Netherlands

Salvatore Drago