938 results about "Relative phase" patented technology

There is disclosed a radio communication system in which a constitution of a base station and further a control station can be simplified. A radio communication system according to the present invention converts a received signal received by a plurality of antenna elements in a base station to a signal of different frequency band, and then conflates the converted signal in order to generate sub-carrier wave multiplex signal. The signal is converted to an optical signal, and then the optical signal is transmitted to a control station via an optical fiber. Or the control station performs weighting to phase of the transmitted signal transmitted from a plurality of antennas of a base station, and then performs frequency conversion to different frequency band, and then conflates the converted signal in order to generate the sub-carrier wave multiplex signal. The signal is converted to an optical signal, and then an optical signal is transmitted to the base station side via the optical fiber. The control station and the base station divides the received sub-carrier wave multiplex signal by each frequency band, and then the frequency of the divided signals are converted to the same frequency band in order to generate the transmitted / received signal of each antenna element. By such a constitution, it is possible to reduce constituent of the optical transmission components to the minimum and to simplify the constitution of the base station. Furthermore, it is possible to maintain the relative phase difference and the relative intensity of the transmitted / received signal of each antenna element. Because of this, it is possible to estimate an arrival direction of the received signal and to control radiation beam pattern of the transmitted signal.

A method of analysing tachometer and vibration response data from an apparatus having one or more rotary components is provided. The method comprises the steps of: providing vibration response data and corresponding tachometer data from the apparatus for a period over which a rotary component of the apparatus varies in rotational speed, the tachometer data being for that component; repeatedly performing at intervals throughout the period the sub-steps of: determining a forcing frequency of the component from the tachometer data and a corresponding vibration response frequency of the apparatus from the vibration response data, comparing the forcing and vibration response frequencies to determine the relative phase difference between the frequencies, and determining the corresponding amplitude of the vibration response from the vibration response data; and plotting the relative phase differences and vibration amplitudes on a polar diagram. The plot trajectory is characteristic of the behavior of the apparatus over the period.

A method and apparatus for providing information associated with at least one portion of a sample can be provided. For example, at least one wavelength of electro-magnetic radiation provided on a sample can be encoded to determine at least one transverse location of the portion. A relative phase between at least one first electro-magnetic radiation electro-magnetic radiation being returned from a sample and at least one second electro-magnetic radiation returned from a reference can be obtained to determine at least one relative depth location of the portion. Further, the information of the portion can be provided based on the transverse location and the relative depth location. For example, the information can be depth information and / or three-dimensional information associated with the portion of the sample.

A method for optimizing emissions from simultaneous activation of electrosurgery generators is presented including delivering first energy to a first target tissue via a first energy module, the first energy represented as a first waveform having a first phase, delivering second energy to a second target tissue via a second energy module, the second energy represented as a second waveform having a second phase, applying the first energy in a first energy mode, and applying the second energy in a second energy mode. The method further includes the steps of comparing the first phase of the first energy waveform with the second phase of the second energy waveform and adjusting a relative phase between the first and second energy waveforms based on the comparison step.

A modular electrosurgical generator platform is presented including a power supply module configured to output power, a first energy module configured to receive the power and convert the power into a first waveform having a first phase, and to deliver the power in a first energy mode, and a second energy module configured to receive the power and convert the power into a second waveform having a second phase, and to deliver the power in a second energy mode. The modular electrosurgical generator platform also includes a host controller module to control a type and a number of energy modalities, a comparator for comparing the first phase of the first waveform with the second phase of the second waveform in one or more of a plurality of sub-periods and an adjustment module for adjusting a relative phase between the first and second waveforms based on results obtained from the comparator.

In a communication system, data is selectively transmitted using single-ended or differential signaling. The data is transmitted in relation to a plurality of clock signals having different relative phases. When the data is transmitted using single-ended signaling, data on adjacent signal lines undergo logic transitions at different times in relation to the plurality of clock signals.

A method and system for locating an RF transponder based on phase differences between signals received from the RF transponder. The method includes receiving a signal from the transponder and calculating distance, relative movement, and position by comparing I-Q phase angle vectors of the signals. Global scroll commands can be used following receipt of signals at first and second frequencies to quickly determine distance.

Detector signals in a pulse oximeter are analyzed to determine a quality of the signals in relation to desired information content or artifact content. The analysis involves performing a transform on a signal to obtain frequency related information and analyzing the frequency related information to obtain a value independent of a shape and waveform of a spectrum of the time-based signal. The analysis involves consideration of the relative phase of the fundamental and harmonic components of a signal. Signals including desired physiological information can be distinguished from artifact affected signals. Based on this analysis, signals can be validated or an appropriate processing algorithm can be selected.

A polarization grating includes a substrate and a first polarization grating layer on the substrate. The first polarization grating layer includes a molecular structure that is twisted according to a first twist sense over a first thickness defined between opposing faces of the first polarization grating layer. Some embodiments may include a second polarization grating layer on the first polarization grating layer. The second polarization grating layer includes a molecular structure that is twisted according to a second twist sense that is opposite the first twist sense over a second thickness defined between opposing faces of the second polarization grating layer. Also, a switchable polarization grating includes a liquid crystal layer between first and second substrates. The liquid crystal layer includes liquid crystal molecules having respective relative orientations that are rotated over a thickness defined between opposing faces thereof by a twist angle that is different from a relative phase angle between respective first and second periodic alignment conditions of the first and second substrates. Related devices and fabrication methods are also discussed.