Class 324/648 - With a bridge circuit

Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter including a multi-terminal network arranged
No. of patents: 31
Last issue date: 12/18/2007

Number	Title	Issue Date
7309994	Integrated directional bridge A directional bridge for measuring propagated signals to and from a source device to a load device where both the source device and load device are in signal communication with the directional bridge is disclosed. The directional bridge may include a first bridge ci...	12/18/2007
7271596	Method and system for testing a signal path having an operational signal A technique for testing a signal path while an operational signal is present is disclosed. The technique may be performed without injecting a test signal into the signal path by using an operational signal already present in the signal path. A method of testing a si...	09/18/2007
7231309	Method and apparatus for testing a bridge circuit A method and an apparatus for testing a bridge circuit. The method includes inputting a first test clock to a first conversion unit for triggering the first conversion unit to transfer a test data to a second conversion unit according to rising edges of the first te...	06/12/2007
7206368	Compensating jitter in differential data signals A method for compensating jitter in received differential data signals includes recovering a first clock signal from the received differential data signals. Re-timed differential data signals are generated based on the received differential data signals and the firs...	04/17/2007
7176698	Voltage sensing device and associated method A transformer circuit is disclosed that minimizes the temperature dependence of an output voltage. A first embodiment of the present invention includes a primary winding coupled to receive a voltage to be sensed and a center-tapped secondary winding coupled at a cen...	02/13/2007
7126347	Precision wideband 50 Ohm input and 50 Ohm output or 100 Ohm output differential reflection bridge A differential reflection bridge is provided for a 100 Ohm load, the bridge not being compromised by a translation to a 50 Ohm system. The reflection bridge uses two transmission line baluns. The first traditional balun T1 connects the input signal source to ...	10/24/2006
6904375	Method and circuits for testing high speed devices using low speed ATE testers A bridge circuit disposed between a device under test (DUT) and conventional automatic test equipment (ATE) extends the performance of the ATE. The bridge circuit allows the ATE to test ICs capable of operating at frequencies above the ATE's normal performance limit...	06/07/2005
6765391	Low cost asic architecture for safety critical applications monitoring an applied stimulus An ASIC (14, 14′, 14″) conditions two independent outputs (VINM, VINP) of a full Wheatstone piezoresistive bridge (12) in separate conditioning paths. Each path is provided with a bridge supply voltage (VHB1, VHB2) which can serve as ...	07/20/2004
6690177	Frequency selective improvement of the directivity of a return loss bridge A frequency selective improved directivity of a return loss bridge is achieved by generating a counteractive reflected energy vector to cancel a reflected energy vector caused by imperfections, such as parasitic effects and an unbalanced balun, in the ret...	02/10/2004
6556937	Synchro/resolver bridge and automatic test system A digital synchro/resolver bridge is provided, which may be operated individually, or optionally, may be interfaced with a computer for inclusion in an automated test system. The digital bridge includes a plurality of relay modules operated by an embedded...	04/29/2003
6405578	Magnetic oxygen analyzer A magnetic oxygen analyzer which employes a detector comprising a magnetic pole, heat generator arranged in a non-uniform magnetic field where the intensity of a magnetic field produced by the magnetic pole varies, and a magnetic wind sensor disposed to n...	06/18/2002
6373236	Temperature compensated power detector A temperature compensated power detector generally comprises a detector circuit portion, which includes a detector diode, and a temperature compensation circuit portion, which includes a temperature compensation diode, that is operably connected to the de...	04/16/2002
6098464	Wheatstone bridge with temperature gradient compensation The output voltage of a Wheatstone bridge type electrical circuit compris four main resistances (J1 to J4) having substantially the same ohmic value, R, and substantially the same temperature coefficient of resistance, ଱, is m...	08/08/2000
6049212	Connector saving adapters and SWR bridge configuration allowing multiple connector types to be used with a single SWR bridge An SWR bridge with an accompanying set of connector saving adapters for connecting between the test port of the SWR bridge and a test device. The SWR bridge includes a branch opposite the test port which has an impedance set to substantially compensate fo...	04/11/2000
5942904	Moisture sensor for large area layers In a moisture sensor arrangement for large area layers including a high-frequency electrical generator, a signal travel time measuring apparatus and a reflectometer, all connected to a cable system, at least two independent cables of the cable system are ...	08/24/1999
5886532	Nanometer distance regulation using electromechanical power dissipation A convenient, non-optical method for scanning probe microscopy tip-to-sample distance control based on the impedance change in a shear-force dither piezo. This is accomplished by determining the tip-sample distance by measuring the impedance change in a s...	03/23/1999
5804703	Circuit for a combustible gas sensor A circuit for a combustible gas sensor comprising: a bridge circuit having first and second legs; a first node at a first midpoint in the first leg of the bridge circuit; a second node at a second midpoint in the second leg of the bridge circuit; a first ...	09/08/1998
5686841	Apparatus and method for the detection and measurement of liquid water and ice layers on the surfaces of solid materials An embodiment of the present invention is a roadway sensor for surface installation in a hole such that a thin ceramic contact sensor may be used to measure and cross-compare fundamental physical antenna parameters of the space immediately above a roadway...	11/11/1997
5659253	Temperature compensated radio frequency detector circuit An RF detector circuit (28), which may be utilized in an output power control loop (10) for an RF transmitter, includes a bridge circuit (50) including a first arm (52) containing a first diode (D2) which rectifies the RF signal and a second arm (54) whic...	08/19/1997
5611239	Microwave point instrument with self-test circuit A microwave point level instrument is adapted to detect level or change of products in a storage vessel. The instrument includes a microwave transducer periodically developing a pulse of microwave energy. A microwave bridge is driven by the transducer for...	03/18/1997
5539670	Coating responsive material condition monitoring system A multiple set point material condition monitoring system is responsive both to the level of material with respect to a sensor and the extent of material coating which has accumulated on the sensor. The system provides an output when a predetermined coati...	07/23/1996
5488310	Return-loss detection for serial digital source A return-loss detector for a serial digital signal source uses a return-loss bridge circuit to exploit the broadband spectral characteristics of a serial digital signal from the signal source to monitor the termination conditions of a system being driven....	01/30/1996
5157338	Antenna VSWR indicator The invention described a pocket size antenna VSWR indicator having a self-contained low level wideband RF signal source which is applied to an antenna under test through a four arm RF resistive bridge circuit. The bridge circuit has been designed to be v...	10/20/1992
5150063	Bridge for measuring the reflection coefficient In a reflection-coefficient bridge, the voltage drop across a neutral arm of the bridge is supplied to the indicator via a coaxial cable. The center conductor of the coaxial cable is coupled to the one connecting point of the neutral arm of the bridge whi...	09/22/1992
5121067	Directional sampling bridge A floating sampler and directional bridge for use in characterizing the impedance of an integrated device under test from D.C. up to frequencies above 100 GHz. The directional bridge has the structure of a Wheatstone bridge with resistor values selected s...	06/09/1992
4962359	Dual directional bridge and balun used as reflectometer test set A test set for use in measuring S-parameters with a network analyzer includes a first directional bridge, a second directional bridge and a single balun with two outputs mounted in an RF housing. A test signal from an RF signal source is transmitted throu...	10/09/1990
4791351	Method and apparatus for rapidly testing passive components by reflectometry in the VHF range An apparatus for testing passive two terminal devices in the VHF range comprises an electrical signal generator whose frequency is variable over the VHF range, a distributed constant line having a first end connected to the generator and a second end conn...	12/13/1988
4739515	Voltage standing wave ratio bridge measuring circuit A method and apparatus for measuring the voltage standing wave ratio on a radio frequency transmission line. The bandwidth of radio frequency signals over which the apparatus accurately operates is improved by the use of a filter to unload terminating res...	04/19/1988
4720677	R. F. triaxial directional bridge A wide bandwidth R. F. vector bridge is provided which is made up of a housing and a microcircuit contained therein. The microcircuit includes a substrate having two opposing faces, and a patterned layer of conductive material on each face defining a refl...	01/19/1988
4704573	Impedance mismatch detector A mismatch detector is provided for determining whether or not a particular load impedance is matched or mismatched to the characteristic impedance of a transmission line. The detector is capable of determining if a particular load impedance has a value o...	11/03/1987
4013949	Return loss test set In this test set, each one of a pair of resistive bridges has one node thereof connected to ground, one of the arms of each bridge that is adjacent the one nodes being open. Each one of a pair of ungrounded terminals of a balanced circuit under test is co...	03/22/1977

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Class 324/648 - With a bridge circuit