A UWB pulse emitter includes an H-bridge having first and second branches in parallel, a first end common to the branches being connected to a first amplitude control module to regulate a high voltage, a second end common to the branches being connected to a second amplitude control module to regulate a low voltage. A first envelope control module controls the shape of the positive portion of a UWB pulse and a second envelope control module controls the shape of the negative portion of this pulse. Each branch comprises first and second switches for respectively switching the high voltage to a first or second input of the first envelope control module and the low voltage to a first or second output of the second envelope control module. Centre taps of the branches, between which the UWB antenna is connected, connect the outputs and the inputs of the control modules.

In an electronic device and an operation method thereof according to certain embodiments, the electronic device may include: a first communication circuit configured to perform a first communication using an ultra-wide band (UWB) communication scheme and a processor. The processor may control the communication circuit to: identify, based on a characteristic of data to be transmitted using the first communication circuit, a frame length of the data to be transmitted; determine, based on the identified frame length, a peak voltage of a signal containing the data to be transmitted; and transmit the data using the signal having the determined peak voltage.

A system for pulse based wideband signaling comprises a transmitter that performs physical layer encoding of both digital and analog data into a pulse repetition rate signal, and modulation of the pulse repetition rate signal into wideband radio frequency pulses, and transmission of the pulses as a wideband RF signal, a receiver that performs physical layer demodulation of the wideband RF signal into a pulse repetition rate signal, and decoding of the pulse repetition rate signal into digital and analog data, wherein the system provides improvement in controlling and balancing the variables of bandwidth, signal to noise ratio, range, and power consumption.

Ultra-Wideband (UWB) technology is a wireless technology for the transmission of large amounts of digital data as modulated coded impulses over a very wide frequency spectrum with very low power over a short distance. However, to support their deployment in a wide range of applications it would be beneficial to provide solutions which: exploit multiple directive antennas oriented in different directions to ensure spatial filtering of undesired signals and increase signal strength; exploit dynamic configuration of the multi-pulse bundles employed to transmit the bits/symbols within the packets to enhance link quality of service; exploit dynamic configuration of the band or bands which the transmitter operates upon; and exploit antenna sub-systems providing omnidirectional radiation patterns with implementations offering filtering and balun functions with small footprint and low cost.

Asynchronous stream generation and processing techniques are described that support implementation of an asynchronous stream mote in which one or more analog sensor signals are used to generate one or more asynchronous streams. On-device operations processing of the one or more asynchronous streams may be performed before transmission of the result(s) to other system components (e.g., peer motes or higher-level system components).

In an ultra-wideband (“UWB”) communication system, methods are disclosed for transmitting packets in multiple portions, each having a different pulse repetition frequency (“PRF”). Methods are also disclosed for transmitting packets dis-continuously.

An in-vehicle apparatus includes a first pulse generator configured to generate a first pulse in accordance with predetermined equipment before a data stream transmitted from the equipment is received; a second pulse generator configured to generate a second pulse based on the received data stream; an output device configured to output a warning sound based on the first pulse or the second pulse; and a switching device configured to output the first pulse to the output device before the data stream is received, and output the second pulse to the output device as of when the first pulse and the second pulse coincide.

A signal transmitter may include a waveform synthesis circuit and a signal transmission circuit. The waveform synthesis circuit may store values of a reference waveform for a selected channel of the signal transmitter, and use the stored values to generate values of reference waveforms for one or more other channels of the signal transmitter. The waveform synthesis circuit may further include a sampling boost circuit to generate one or more additional values for the reference waveforms. The waveform transmission circuit may generate signals for the channels of the signal transmitter based at least in part on the values of the reference waveforms, and transmit the signals via one or more antennas.

In an ultra-wideband (UWB) communication system, methods are disclosed for transmitting packets in multiple portions, each having a different pulse repetition frequency (PRF). Methods are also disclosed for transmitting packets discontinuously.

In an ultra-wideband (UWB) communication system, methods are disclosed for transmitting packets in multiple portions, each having a different pulse repetition frequency (PRF). Methods are also disclosed for transmitting packets dis-continuously.