157 results about "Patch electrode" patented technology

Patch-type physiological monitoring apparatus, system and network are disclosed. The patch-type physiological monitoring apparatus includes at least a node, and at least a patch for attaching to a skin surface of a user and for supporting the node on the skin surface through joining therewith, wherein the node includes at least a signal I / O port for externally connecting to at least a sensor or electrode through a connecting wire so as to acquire a physiological signal, and a RF module for transmitting and receiving signal. The apparatus according to the present invention is of light weight and compact size and easily attached to human body through adhesive patches. Through a RF module, the system can wirelessly communicate with corresponding devices without additional wiring. Further, the system can utilize conventional electrodes, patch electrodes and electrode wiring to avoid extra cost for facilities' renewal and replacement.

A wireless, programmable system for bio-potential signal acquisition (e.g., electrocardiogram (ECG) data) includes a base unit and a plurality of individual wireless, remotely programmable transceivers that connect to patch electrodes. The base unit manages the transceivers by issuing registration, configuration, data acquisition, and transmission commands using wireless techniques. Bio-potential signals from the wireless transceivers are demultiplexed and supplied via a standard interface to a conventional monitor for display.

A circularly-polarized-wave patch antenna includes a main body having a patch electrode provided with two feeding points and a circuit for generating a phase difference of 90° between signals supplied to the feeding points. A Wilkinson distribution circuit is provided between the 90°-phase-difference generating circuit and a coaxial cable (feeder line) so as to improve a reflection characteristic. The patch antenna includes two feeding points, and thus a favorable axial ratio characteristic can be obtained in a wide band. Also, a favorable reflection characteristic can be obtained in a wide band because of the Wilkinson distribution circuit. Accordingly, the patch antenna can be used in a wider frequency band.

An epicardial electrode which is suitable, in particular, for use with a cardiac stimulation device, comprises an electrode body which has a stimulation surface adapted to bear against the cardiac tissue and to stimulate a part of the heart, that is to say a partial region of the heart, and at least one fixing element for fixing the stimulation surface to the cardiac tissue. The at least one fixing element is adapted for engagement into the cardiac tissue. The epicardial electrode can be secured to the outside and in particular to the outer skin of the cardiac muscle (epicardium) without being sewn to the cardiac muscle like a patch electrode. Only the fixing element has to be brought into engagement with the cardiac tissue.

A catheter and patch electrode system is provided for use with an apparatus, such as an ablation generator, having a 4-wire interface for improved impedance measurement. The 4-wire interface includes a pair of source connectors across which an excitation signal is produced and a pair of sense connector wires across which the impedance is measured. The RF ablation generator may also produce an ablation signal across a source wire and an indifferent return patch electrode. The system further includes a cable that connects the generator to a catheter. The catheter includes a shaft having a proximal end and a distal end, with an ablation tip electrode disposed at the distal end. A source lead is electrically coupled to the tip electrode and extends through the shaft to the proximal end where it is terminated. An optional sense lead is also electrically coupled to the tip electrode and extends through the shaft to the proximal end. The system further includes a source return (e.g., skin patch) and a sense return (e.g., skin patch), either or none of which may be combined with the indifferent return, and if used may be placed on opposite sides of the patient for improved performance. The impedance sensor circuit produces an excitation signal across the source connectors, which is then carried to the catheter by the cable, then to the tip electrode, travels through the complex load (tissue volume), and returns to the generator via a patch electrode. The impedance is measured by observing the voltage drop across the sense connectors caused by the excitation signal.

The invention discloses a liquid crystal phase shift unit for a reflected adjustable phase shifter. The liquid crystal phase shift unit comprises two upper and lower layers of medium substrates, a liquid crystal layer is injected in the gap between the two upper and lower layers of medium substrates, a metal microstrip patch electrode is arranged on the lower side of the upper layer medium substrate, a metal total reflection ground electrode is arranged on the upper side of the lower layer medium substrate, and polyimide film coating is respectively arranged on upper and lower surfaces of the liquid crystal layer; the metal microstrip patch electrode comprises two identical dipole patches, an offset voltage loading line and an auxiliary electrode, the two dipole patches are arranged in parallel, the offset voltage loading line is connected with the two dipole patches orthogonally to form a patch unit, the auxiliary electrode is a quadrilateral metal frame, and the quadrilateral metal frame surrounds the whole patch unit and is connected with the offset voltage loading line. The auxiliary electrode has a simple main body structure, educes the saturation bias voltage, and can be used in the field of liquid crystal reflected phase shifters and phase control antennas within microwave, millimeter wave and terahertz frequency bands.

Disclosed is a touch sensing apparatus having a transparent substrate that includes a touch sensing region and a peripheral region outside the touch sensing region. The touch sensing region may include a pair of column electrodes extending in a vertical direction; a plurality of patch electrodes arranged in two columns in the vertical direction, the two columns of patch electrodes interposed between the pair of column electrodes without an intervening column electrode; a plurality of first wirings electrically connected to the pair of column electrodes; and a plurality of second wirings electrically connected to the two columns of patch electrodes.

The invention discloses a phase shift unit and a terahertz reflection-type liquid crystal phase shifter formed by the phase shift unit. The phase shift unit comprises a dielectric substrate, an electrode structure and a liquid crystal layer, wherein the dielectric substrate comprises two dielectric substrate bodies which are oppositely fixed and are parallel to each other; the electrode structure comprises two microstrip patch electrodes and a metal reflection electrode; the two microstrip patch electrodes are arranged on the opposite surfaces of the two dielectric substrate bodies respectively and are arranged in a mirror symmetry manner; the metal reflection electrode is arranged on the other surface of one dielectric substrate body; two sides of each microstrip patch electrode are connected with metal connection wires; a liquid crystal layer is arranged in the gap between the two dielectric substrate bodies; the terahertz reflection-type liquid crystal phase shifter comprises a plurality of phase shift units; and different DC bias voltage is added to each phase shift unit. According to the phase shift unit and the terahertz reflection-type liquid crystal phase shifter, the performance of the phase shift unit is improved; the phase shift range is greatly improved; meanwhile, the structure is simple; the preparation technology is easy to implement; the required bias voltage is relatively low; and the manufacturing cost is relatively low.

A TFT substrate (101) including a plurality of antenna element regions (U) arranged on a dielectric substrate (1), the TFT substrate including a transmitting / receiving region including a plurality of antenna element regions, and a non-transmitting / receiving region located outside of the transmitting / receiving region, each of the plurality of antenna element regions (U) including: a thin film transistor (10); a first insulating layer (11) covering the thin film transistor and having a first opening (CH1) which exposes a drain electrode (7D) of the thin film transistor (10); and a patch electrode (15) formed on the first insulating layer (11) and in the first opening (CH1), and electrically connected to the drain electrode (7D) of the thin film transistor, wherein the patch electrode (15) includes a metal layer, and a thickness of the metal layer is greater than a thickness of a source electrode (7S) and the drain electrode (7D) of the thin film transistor.

The invention discloses an antenna unit and a manufacturing method thereof, a liquid crystal antenna and communication equipment, and belongs to the technical field of antennas. The antenna unit comprises a first substrate and a second substrate opposite to each other, as well as a liquid crystal and a frame sealing structure between the first substrate and the second substrate, wherein a patch electrode is arranged on one side of the first substrate near the liquid crystal, a ground electrode is arranged on one side of the second substrate near the liquid crystal, and the frame sealing structure comprises a support and a sealant arranged on at least one side of the support. The antenna unit solves the problem that the adjustment range of the resonant frequency of the liquid crystal antenna is small, and helps to improve the adjustment range of the resonant frequency of the liquid crystal antenna. The antenna unit is applied to the liquid crystal antenna.

A patch antenna apparatus includes an antenna element and a metal frame, which are disposed on a ground plane. The antenna element has a dielectric substrate, which has a patch electrode on the top surface and has a ground electrode on the bottom surface. The patch electrode is connected to current-feed pins. The metal frame is positioned so as to surround the peripheral surface of the dielectric substrate. The height dimension of the metal frame is set to be slightly larger than the thickness dimension of the dielectric substrate. Electromagnetic radiation radiated from the antenna element is reflected upon reaching the metal frame. Thus, the metal frame causes interference with the electromagnetic radiation such that the traveling direction of the electromagnetic radiation is redirected closer to the lateral direction.

A large area liquid crystal display comprises a layer of liquid crystal material between two cell walls. One cell wall has a common sheet electrode. The other cell walls comprise a plurality of addressing tiles electrically connected together. Driver circuits at the display edges apply addressing voltages. Each addressing tiles comprises a series of m data electrodes and n gate electrodes arranged to form an mxn matrix array of electrode intersections. At each intersection is a pixel patch electrode and a non linear element connected to adjacent source and gate electrodes and to the pixel electrode. The data and gate electrodes continue across the tile surface and around its edges. Adjacent tiles are electrically connected together by an anisotropic glue, or by solder bumps, or electrical bridges. The liquid crystal material may be encapsulated in a polymer matrix or be a non-encapsulated layer. Dyes may be incorporated in the liquid crystal material. The pixel electrode may be formed as a group of three independently addressed electrodes each providing a different color so the display may be a multi-color display.

The invention relates to a disposable brain state monitoring flexible patch electrode, which comprises a conductive wire, an electrode interface box, an IC (Integrated Circuit) card identification circuit, an IC card contact, an EEG ( Electroencephalogram ) acquisition and processing circuit, an Ag conductive layer contact, an electrode insert, an IC card control chip, a photographic flexible substrate film, a nano Ag circuit layer, an Ag / AgCl ion conductive coating, an insulation PE (Poly Ethylene) coating film, a collodion pad, a thorn pad and sponge. The electrode is suitable for monitoring the state of consciousness of brain, sleep or anesthesia state of a patient. The electrode adopts a film circuit printing process to coat Ag paste and Ag / AgCl paste on a photosensitive matrix material, and then the heat-curing treatment is carried out. A main electrode body is flexibly designed, and can freely bend and is not easily broken due to the strong flexibility of silver powder, and is more suitable for a human facial structure; meanwhile, the collodion pad ensures that the electrode is in contact with a human head more firmly and tightly, the sponge protects the Ag / AgCl ion conductive coating against wear, conductive paste is well accommodated and fixed, and the problems of baseline drift and waveform distortion caused by the loss of the conductive paste and the like are solved.

The invention discloses a real-time medical communication system based on current coupling type human body communications and a communication method of the real-time medical communication system, and belongs to the field of human body communications, wherein the problem that an existing whole system of capacity coupling type human body communications is poor in adaptation and stability is mainly solved. The real-time medical communication system comprises a power module, a transmitter and a receiver, wherein the transmitter and the receiver are respectively connected with the power module and installed on a human body. The communication method of the real-time medical communication system comprises the steps that a medical signal of the human body is converted into a differential current signal suitable for transmission of human tissues through the transmitter, the differential current signal is transmitted to a patch electrode through a guide line and is injected into the human tissues through the patch electrode, a voltage signal in the human tissues is collected and transmitted to the receiver, and the receiver detects voltage of two different positions on the human body so as to obtain the medical signal. Information is transmitted by safely and stably using the human body as a medium without affecting the normal physiological status of a person, and the real-time medical communication system based on the current coupling type human body communications and the communication method of the real-time medical communication system are suitable for being popularized and used on a large scale.

The invention discloses a liquid crystal-based terahertz slotted phase shift unit and a phased-array antenna composed of the liquid crystal-based terahertz slotted phase shift unit. The slotted phaseshift unit comprises upper and lower layers of medium substrates, wherein gaps of the upper and lower layers of medium substrates are injected with liquid crystal layers; a metal microstrip patch electrode is arranged on the lower side of the upper layer of medium substrate; a metal grounding electrode is arranged on the upper side of the lower layer of medium substrate; the metal microstrip patchelectrode comprises a metal layer; a rectangular slot is formed in the middle part of the metal layer; strip-type partitioning slots are symmetrically formed in positions, which are located at two ends of the rectangular slot, on the edge of the metal layer; the phased-array antenna comprises multiple slotted phase shift units; the slotted phase shift units are flatly laid by taking the edge lengths of the upper and lower layers of medium substrates as periods, so as to form the phased-array antenna. The liquid crystal-based terahertz slotted phase shift unit disclosed by the invention has the characteristics of a simple loading circuit, minimization, low manufacturing cost, phase continuous adjustability and the like.

The invention discloses a maternal fetus monitoring device and a maternal fetus monitoring method. A fetal position and fetal movement monitoring device comprises a group of patch electrodes, a preceding-stage signal processor, a post-stage signal processor and a fetal position judgment processor, wherein the patch electrodes are used for being attached to a maternal abdomen to provide the measuration of at least three channels; the preceding-stage signal processor receives a plurality of induction signals of the group of patch electrodes, inhibits noise and amplifies the signals to output a group of characteristic induction signals; the post-stage signal processor receives the group of characteristic induction signals outputted by the preceding-stage signal processor so as to separate maternal electrocardio-complex waves and fetal electrocardio-complex waves which correspond to the channels; and the fetal position judgment processor analyzes and processes the fetal electrocardio-complex waves to obtain a group of characteristic waveforms of each fetal electrocardio-complex wave or calculates a fetal cardiac axis vector of a front coordinate relative to the parent directly according to the fetal electrocardio-complex waves.

A scanning antenna is a scanning antenna in which antenna units U are arranged, and includes a TFT substrate including a first dielectric substrate, TFTs, a plurality of gate bus lines, source bus lines, and patch electrodes; a slot substrate including a second dielectric substrate, and a slot electrode formed on a first main surface of the second dielectric substrate; a liquid crystal layer LC provided between the TFT substrate and the slot substrate; and a reflective conductive plate provided opposing a second main surface of the second dielectric substrate opposite to the first main surface via a dielectric layer. The slot electrode includes slots arranged in correspondence with the plurality of patch electrodes, and each of the patch electrodes is connected to a drain of a corresponding TFT and is supplied with a data signal from a corresponding source bus line while selected by a scanning signal supplied from the gate bus line of the corresponding TFT. The frequency at which the polarity of the voltage applied to each of the plurality of patch electrodes is inverted is greater than or equal to 300 Hz.

A combined antenna combining a circularly polarized wave antenna and a vertically polarized wave antenna is provided. A flat plate antenna for ground waves is fixed on a printed board, and a two-point feeding type patch antenna is placed and fixed on a metallic flat plate of the plate antenna. The plate antenna has one feed terminal and six uniformly spaced ground terminals. The patch antenna has two feed pins at equidistant positions from the center of the patch electrode along radial lines that form a right angle. Each of feed pins is connected to a 90-degree phase difference circuit using an opening of the plate antenna. The relative position between the flat plate and the patch electrode is the same along the peripheral direction. All of the feed terminals, the ground terminals and the feed pins have a predetermined positional relationship relative to one another.

A method of filtering respiration noise from a localization signal includes acquiring a localization signal from at least one position measurement sensor within a localization field and acquiring an acceleration signal for at least one localization field generator (e.g., a patch electrode). A displacement signal for the field generator is calculated, for example by integrating the acceleration signal twice, and transformed into the frequency domain in order to calculate a fractional power indicative of patient respiration. The fractional power can then be compared to a threshold value, and the localization signal can be filtered if the fractional power exceeds the threshold value. Alternatively, the acquired acceleration signal can be used to gate collection of data points from the localization signal.

A scanned antenna (1000) is a scanned antenna including antenna elements (U) arranged together, the scanned antenna including: a TFT substrate (101) including a first dielectric substrate (1), TFTs, gate bus lines, source bus lines, and patch electrodes (15); a slot substrate (201) including a second dielectric substrate (51) a slot electrode (55); a liquid crystal layer (LC) provided between the TFT substrate and the slot substrate; and a reflective conductive plate (65). The slot electrode includes slots (57) arranged so as to correspond to the patch electrodes. As seen from the normal direction to the first dielectric substrate, a plurality of spacer structures (75) provided between the TFT substrate and the slot substrate are arranged so as not to overlap with first regions (Rp1) and / or second regions (Rp2), where the first regions are regions that are within a distance of 0.3 mm from edges of the slots and the second regions are regions that are within a distance of 0.3 mm from edges of the patch electrodes.

A scanned antenna (1000) is a scanned antenna including antenna elements (U) arranged together, the scanned antenna comprising: a TFT substrate including a first dielectric substrate (1), TFTs, gate bus lines, source bus lines, and patch electrodes (15); a slot substrate (201) including a second dielectric substrate (51), and a slot electrode (55) formed on a first primary surface of the second dielectric substrate; a liquid crystal layer (LC) provided between the TFT substrate and the slot substrate; and a reflective conductive plate (65) arranged so as to oppose a second primary surface of the second dielectric substrate (51) with a dielectric layer (54) interposed therebetween, the second primary surface being on an opposite side from the first primary surface. The TFT substrate (TFT substrate portion (101Cb)) includes a terminal region (TR) outside of the seal portion (73), and the gate bus lines or the source bus lines are connected to gate terminal portions or source terminal portions formed in the terminal region via a transparent conductive layer (14b) provided between the seal portion (73) and the TFT substrate.

A scanning antenna (1000) in which antenna units (U) are arranged includes: a TFT substrate (101) having a first dielectric substrate (1), TFTs, gate bus lines, source bus lines, and patch electrodes (15); a slot substrate (201) having a second dielectric substrate (51) and a slot electrode (55); a liquid crystal layer (LC) provided between the TFT substrate and the slot substrate; and a reflective conduction plate (65). The slot electrode has slots (57) arranged so as to correspond to the respective patch electrodes. In a case in which, when seen from the direction of the normal to the first dielectric substrate, regions within a distance of 0.3 mm from the edges of the slots are treated as first regions (Rp1) and regions within a distance of 0.3 mm from the edges of the patch electrodes are treated as second regions (Rp2), a plurality of spacer structures (75) provided between the TFT substrate and the slot substrate are arranged so as not to be superposed with the first regions and / or the second regions.

A TFT substrate includes a transmission and / or reception region including a plurality of antenna unit regions, and a non-transmission and / or reception region located in a region other than the transmission and / or reception region. Each of the plurality of antenna unit regions includes a TFT and a patch electrode electrically connected to a drain electrode of the TFT. The TFT substrate includes a source metal layer including a source electrode of the TFT, the drain electrode, and a source bus line, a gate metal layer formed on the source metal layer and including a gate electrode of the TFT and a gate bus line, a gate insulating layer formed between the source metal layer and the gate metal layer, an interlayer insulating layer formed on the gate metal layer, and a conductive layer formed on the interlayer insulating layer. The patch electrode is included in the gate metal layer.

The TFT substrate includes a dielectric substrate and a plurality of antenna unit regions arranged on the dielectric substrate. Each of the plurality of antenna unit regions includes a TFT, an patch electrode electrically connected to a drain electrode of the TFT, an auxiliary capacitance electrode electrically connected to the drain electrode, a first auxiliary capacitance counter electrode opposite to the auxiliary capacitance electrode with a dielectric layer interposed therebetween, and a second auxiliary capacitance counter electrode on a side of the auxiliary capacitance electrode farther from the first auxiliary capacitance counter electrode and opposite to the auxiliary capacitance electrode with another dielectric layer interposed therebetween.

A scanning antenna includes a TFT substrate including a first dielectric substrate, a plurality of TFTs, a plurality of gate bus lines, a plurality of source bus lines, and a plurality of patch electrodes, a slot substrate including a second dielectric substrate and a slot electrode (55) formed on the first main surface of the second dielectric substrate, a liquid crystal layer provided between the TFT substrate and the slot substrate, and a reflective conductive plate provided opposing a second main surface opposite to the first main surface of the second dielectric substrate via a dielectric layer, and the slot electrode includes a plurality of slots arranged in accordance with the plurality of patch electrodes, and a groove configured to divide the slot electrode into two or more sections, and the TFT substrate includes an opposing metal part arranged opposing the groove, and when viewed from a normal line direction of the first dielectric substrate, the groove is covered with the opposing metal part in the width direction thereof.