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Patent Searching and Data


Matches 101 - 150 out of 2,102

Document Document Title
WO/1999/001812A1
A circuit (10) for determining periods of and the phase relationship between waveform signals (28 and 30). A delay line (12) having a sample port (14), a set port (16), a reference port (18), and an output port (20) and further internall...  
WO/1998/054584A2
A two port handheld VNA enabling both reflection and transmission measurements to be made over a range of 25 MHz to 3.3 GHz frequency range. The handheld VNA includes a tracking synthesizer (420) which generates an LO signal without a di...  
WO/1998/052284A2
The invention relates to a phase detector arrangement for use in a phase locked loop circuit, for recovery of clock and data pulses from a data stream comprising Return to Zero RZ signals comprising digital data. The arrangement comprise...  
WO/1998/034128A1
Apparatus for measuring the phase of a predetermined incoming data sequence comprising sampling means operable under control of a sampling clock to sample the incoming sequence at a frequency not equal to an integer multiple or divisor o...  
WO/1998/013936A1
So far, lateral pnp-transistors were not fitted to high frequency charging pumps. As a solution, the invention suggests that two transistor-resistor modules (T4, R2; T3, T1) be controlled by emitter-coupled transistors (T1, T2) with a di...  
WO/1998/000722A1
A digital frequency detector (10) and method for digitally detecting arbitrarily small phase changes between a signal waveform and a reference waveform. Both the reference waveform and the signal waveform are sampled at a rate related to...  
WO1997045709A3  
WO/1997/045709A2
The system and method of the present invention generates high resolution phase measurements without the high processing and memory overhead requirements found in prior art circuits and methods. Each signal sample (of N samples) is divide...  
WO/1997/030357A1
In accordance with a first aspect of the invention a phase detector for measuring phase differences between K input signals is provided. The phase detector comprises a counter, K first registers and a first subtractor. Each first registe...  
WO/1996/034299A1
An interrogator (10) for use with a passive transponder (12) has a Colpitts oscillator (30, 32, 34, 36, 38) arranged to vary in frequency in accordance with the frequency of a signal from the transponder; a voltage controlled oscillator ...  
WO1991008493A3  
WO/1996/019735A1
A handheld vector network analyzer (VNA) (300) providing a wide bandwidth test signal Fo utilizing a narrowband test signal synthesizer (700) which provides the test signal through a frequency divider (710) or harmonic generator (802). W...  
WO/1996/016336A1
The present invention relates to a measuring method and a system of phase angle of electrical system sinusoidal quantities, the method includes selecting a key station as a reference station, other stations desired to be measured as sub-...  
WO/1996/013919A1
A method and apparatus is disclosed for use in an implantable device that communicates with an external device through pulse position modulation. A timing generator is provided as part of said implantable device that determines the phase...  
WO/1996/012969A1
A numerical comparator (20) is disclosed. The numerical comparator (20) employs numerical techniques based upon the behavior of the cylinder unit (18) to compare phasors in real time. In one application of this invention, the torque sign...  
WO/1996/003659A1
A process is disclosed for measuring the phase jitter of a data signal by means of a phase demodulator that uses a predetermined clock signal. In order to measure the phase jitter in a relatively simple but accurate manner, the data sign...  
WO/1996/001007A1
The invention relates to measuring in an accurate way, e.g. in a communication system, the phase difference of two periodic input signals (INA, INB) having essentially the same frequency (fi), with a high resolution and utilizing digital...  
WO/1995/029479A1
Methods and systems for beamforming are disclosed that include a signal processor that can dynamically determine the relative time delays between a plurality of frequency-dependent signals. The signal processor can adaptively generate a ...  
WO/1995/022064A1
A phase detector is described that includes a load circuit that presents both a high differential impedance and a low common mode impedance. The load circuit is coupled to (1) a power supply and (2) a first node and a second node. The fi...  
WO/1995/018384A1
The invention concerns a digital phase detector for the determination of phase shifts between a comparison clock signal (VT) and a reference clock signal (RT). First means (STA, STO) generate start and stop signals from the pulses of the...  
WO/1995/014236A1
Proposed is a device for the determination of the phase difference between a first and a second digital input signal (S1, S2). A first embodiment calls for the generation of a clock signal (CLOCK) which is fed as the first (counter) sign...  
WO1995006854A3  
WO/1995/006854A2
A magnetic flowmeter comprises a first electric circuit (6) providing a first alternating electrical signal generated mostly by an electromagnetic interaction between an alternating magnetic field and the velocity of an electrically cond...  
WO/1995/006260A1
A transmitting box (101) is connected to a first electrical outlet in a building. The phase of the first electrical outlet is used as the reference phase. The transmitter box senses each of the zero-cross-overs of the reference phase and...  
WO/1994/011744A1
This invention gives a very precise and simple digital circuitry as well as basis for software to measure the phase difference between harmonic components of any of two of the input signals. The apparatus may be used also for measuring t...  
WO/1994/003818A1
A method and apparatus for rapidly and continuously sampling AC voltage and current signals in a plurality of power distribution circuits. The sampled signals are then analyzed in a sine board computer to derive the number of fundamental...  
WO/1991/014329A1
An electrical circuit for producing a digital value which is representative of instantaneous phase of an electrical input signal relative to a reference frequency signal. The circuit includes a digital counter for continuously generating...  
WO/1991/008493A2
Method and device for comparing analog signals by transformation of analog signals into binary logic signals, detection of zero crossings by means of comparators (30), and providing a correlation signal by means of a logical circuit (32)...  
WO/1991/005422A1
A phase-detector circuit for a phase-locked loop clock recovery system detects the phase difference between an information signal and a clock signal and produces a phase error signal representative of the phase difference. The phase dete...  
WO/1990/015482A1
A digital phase detector (500) for providing an output (520) characterized by the phase difference of a first input signal (175) and a second input signal (275) is provided. The phase detector comprises a first (200) and a second (300) d...  
WO/1990/013040A1
The invention relates to a method and an apparatus for accurate digital determination of the time or phase position of a signal pulse train in relation to a fixed time or frequency reference. The arrangement generates and produces direct...  
WO/1989/009450A1
A method and apparatus for evaluating the performance of a device, such as a quadrature encoder (14), wich generates at least two electrical wave train signals (10, 11), each varying between first and second states and the two normally b...  
WO/1989/001634A1
A method for measuring channel-to-channel skew or phase difference in an electronic system of the type having a plurality of input channels which are sampled by sampling pulses having a frequency fo and a period Po. The sampling pulses a...  
WO/1988/010432A1
A method for removing phase errors from RF signals generated by movement of the cable interconnecting a network analyzer (22) and a device under test (14). The method includes the steps of measuring (30) the phase difference between inci...  
WO/1988/009938A1
A method and apparatus of deriving a directional polar diagram from the signals R received by a synthetic-aperture aerial (in direction-finding applications), or P from such an aerial (in radio-beacon applications), these signals includi...  
WO/1988/005543A1
A system (Fig. 3) and method for detecting an abnormality in a network (10) for distributing or transmitting electric power at a predetermined fundamental frequency. The system produces a signal (40) representing the fundamental frequenc...  
WO/1988/002867A1
The invention relates mainly to a phase measuring device. The use of adapted filters (140) makes it possible to increase the signal/noise ratio of a received signal. Nevertheless, if a plurality of signal samples having each a different ...  
WO/1987/003097A1
A phase-frequency discriminator comprising a first RS latch coupled to provide first output signals, said first RS latch including an S input terminal coupled to receive first input signals; a second RS latch coupled to provide second ou...  
WO/1986/006174A1
An apparatus for measuring the signal level of a signal to be measured is provided with a reference signal oscillator, a variable local signal oscillator, a heterodyne-type mixer, a band-pass filter, and means for automatically correctin...  
WO/1986/002722A1
A device for measuring the flow velocity of a liquid in a conduit, comprising two ultrasonic transducers and an electronic circuit arrangement, in which each one of the two transducers concurrently transmits a burst to the other transduc...  
WO/1982/003276A1
A power transducer (Fig. 2) of a variety utilizing time division multiplication and configured under a principle of operation incorporating an integrator stage (51). Phase adjustment for the transducer is provided by a network (56) which...  
WO/1982/002987A1
A phase detector circuit (10) has low offsets and is easily made as a bipolar integrated circuit. A first input (11) to the phase detector controls a transistor (14) which in turn controls a current source (17). The output of the current...  
JP5993159B2  
JP5989366B2  
JP2016156683A
[Subject] Though it is simple composition, a measurable phase contrast measuring instrument is provided for phase contrast by high sensitivity. [Means for Solution] Phase contrast measuring instrument 100 which measures phase contrast of...  
JP5970208B2  
JP5971425B1
A plurality of delay devices with which the signal analysis device contained the 1st delay device, the 2nd delay device, the 3rd delay device, and the 4th delay device at least are connected in series, As opposed to the predetermined poi...  
JP2016133380A
[Subject] A phase detecting device which a phase can detect that it is small and lightweight and uniquely is provided. [Means for Solution] The 1st, the 2nd phase comparing element, a delay circuit, and a phase detecting device provided ...  
JP2016033488A
To provide an inter-voltage/current phase delay estimation device which estimates a phase delay between a voltage waveform and a current waveform by using a non-contact type voltage/current sensor, and its method.An inter-voltage/current...  
JP5876349B2  

Matches 101 - 150 out of 2,102