Abstract: Methods and systems for improved matching of on-chip capacitors may comprise a semiconductor die with an on-chip capacitor comprising one or more metal layers. The on-chip capacitor may comprise interdigitated electrically coupled metal fingers. The electrically coupled metal fingers may be arranged symmetrically in the semiconductor die to compensate for non-uniformities in the one or more metal layers. The metal fingers may be arranged with radial symmetry. Metal fingers in a first metal layer may be electrically coupled to metal fingers in a second metal layer. An orientation of metal fingers may be alternated when coupling metal fingers in a plurality of metal layers. The metal fingers may be coupled at the center or the outer edge of the on-chip capacitor. The on-chip capacitor may be configured in a plurality of symmetric sections wherein a boundary between each of the plurality of sections is configured in a zig-zag pattern.

Abstract: The present disclosure disclose a method including: a transmit end transmits at least two mixed pilot signals to a receive end separately by using at least two physical antennas. The at least two mixed pilot signals are separately obtained after preset pilot signals corresponding to logical antennas in the at least two logical antennas are weighted by using a precoding weight matrix. The transmit sends a first codebook subset restriction instruction to the receive end. The first codebook subset restriction instruction carries a rank indication RANK and at least one precoding matrix index PMI. The transmit end receives a channel quality feedback message that is fed back by the receive end according to downlink channel quality of an equivalent channel of a specified antenna. According to the present invention, a suitable serving antenna is selected for a receive end, thereby improving signal quality.

Abstract: Disclosed is a method for manufacturing N-type semiconductor element for cooling or heating device, the N-type semiconductor element is made of tellurium, bismuth and selenium material, firstly, smashing and grinding the tellurium, bismuth and selenium material to be 2000 meshes or more; and then, according to the proportion of each material in parts by weight, proportioning the materials to obtain a mixture, the proportion thereof is: 40 to 44 parts of tellurium, 53 to 57 parts of bismuth and 28 to 32 parts of selenium. During operation, the temperature difference between the two ends thereof is larger, and through a test, the temperature difference between the cold end and the hot end reaches about 73° C. to 78° C. Therefore, the N-type semiconductor element has the advantages of high operation efficiency and lower energy consumption. The N-type semiconductor element is particularly suitable for manufacturing a semiconductor cooling or heating device.

Abstract: An antenna system and a signal transmission method are provided. The antenna system includes: an antenna array and a matching network, where an S parameter matrix of the matching network matches an S parameter matrix of the antenna array and the matching network is configured to perform pre-distortion on a to-be-transmitted signal or de-distortion on a received signal, and the antenna array is configured to transmit the pre-distorted to-be-transmitted signal. According to the antenna system and the signal transmission method provided in this application, pre-distortion may be performed on a signal that needs to be transmitted by the antenna array or de-distortion may be performed on a signal received by the antenna array, so as to configure energy that is coupled from each antenna array element to an adjacent antenna array element, thereby reducing a coupling effect between antenna array elements.

Abstract: The invention provides a lighting device, comprising a light exit chamber (14), delimited by a light exit body (16), a plurality of light sources (20), positioned within the light exit chamber (14), and arranged to emit light in the direction of the light exit body (16), an optical processing element, adapted to process the light emitted from the plurality of light sources (20), and a transparent antenna element (22), extending into the light exit chamber (14) and positioned relative to the plurality of light sources (20) such that each light source is arranged to transmit light toward the antenna element, wherein said transparent antenna element (22) is separate from the optical processing elements, wherein the transparent antenna element (22) being transparent for the light emitted by the plurality of light sources (20), and the antenna element (22) comprises: a transparent conductive material that is self-supporting.

Abstract: Methods and systems for improved matching for on-chip capacitors may comprise in a semiconductor die comprising an on-chip capacitor with one or more metal layers: electrically coupling a first set of metal fingers, electrically coupling a second set of metal fingers that are interdigitated with the first set of metal fingers, wherein the first set of metal fingers and the second set of metal fingers are arranged symmetrically in the semiconductor die, and configuring the on-chip capacitor in a plurality of symmetric sections, wherein a boundary between each of the plurality of sections is configured in a zig-zag pattern. The first set of metal fingers and the second set of metal fingers may be arranged with radial symmetry. A first set of metal fingers in a first metal layer may be electrically coupled to a set of metal fingers in a second metal layer.

Abstract: A low light failure high power LED street lamp and a manufacturing method therefor. Color mark is made on tail end of N-type semiconductor element (6) or P-type semiconductor element (7); then N-type and P-type semiconductor element (6, 7) are arranged in matrix manner between upper beryllium-oxide ceramic wafer (8) and lower beryllium-oxide ceramic wafer (9), so that head end of N-type semiconductor element (6) is connected with tail end of P-type semiconductor element (7) or tail end of N-type semiconductor element (6) is connected with head end of P-type semiconductor element (7), then lower beryllium-oxide ceramic wafer (9) is attached, through graphene thermal conductive greaseon layer (4), on backside of circuit board (2) which is mounted with LED bulbs (3), and heat sink (15) is mounted on upper beryllium-oxide ceramic wafer (8), then circuit board (2) together with heat sink (15) are mounted into street lamp housing (1).

Abstract: The present invention provides a process for the manufacture of a compound of formula VIIIa and salts forms of VIIIa where Rc is an aryl sulfonic acid

Abstract: A distributed predictive control based voltage restoration scheme for microgrids, comprising: step 10) adopting a distributed finite time observer to acquire the global reference voltage for restoring the voltage of each local controller; step 20) each local controller adopts a droop control to acquire the local voltage value of each generation, and adds a secondary voltage compensation term into the droop characteristic formula to form the voltage reference value of a distributed generation; step 30) establishing a trended prediction model; step 40) acquiring a predictive control term at a current time as the secondary voltage compensation command, and acting on the local controllers; and step 50) determining, whether the local voltage of each distributed generation of the microgrid reaches the voltage reference value under the secondary voltage compensation command.

Abstract: An LED light bulb has LEDs (32) mounted on a tubular carrier (22) with open ends. The tube (22) functions as a chimney to promote cooling by creating convection currents through the chimney. The cooling can be entirely passive or it may be active by incorporating a fan (50).

Abstract: Among other things, this disclosure describes a method comprising: cleaving a plurality of target sequences in an adaptor-tagged sequencing library using population of reprogrammed nucleic acid-directed endonucleases; non-specifically amplifying the library, thereby amplifying fragments that have not been cleaved; and sequencing the amplified sample.

Abstract: A heat pipe device includes an outer pipe and at least one first capillary structure. The outer pipe is a hollow pipe and has a defined lengthwise direction, and the first capillary structure is accommodated along the lengthwise direction and positioned in the outer pipe, and at least one steam channel is formed between the first capillary structure and the outer pipe. Even if the heat pipe device is upside down, the heat pipe still can resist gravity and work normally to achieve the effect of using the heat pipe without being limited by the using direction.

Abstract: A five-degree-of-freedom adjustment and positioning method and apparatus for assembly/measurement of rotor and stator of an aircraft engine; said method comprises adjusting a plane motion and a rotation of a tested piece through composite motion comprising five degrees of freedom: a 360° rotatory motion around a Z axis, a plane motion along an X axis and a plane motion along a Y axis, a rotatory motion around the X axis and a rotatory motion around the Y axis; said apparatus comprises: a clamping mechanism, a turning platform component, a translational platform component and a rotational platform component. The present invention designs a five-degree-of-freedom adjustment and positioning method and apparatus having properties of large load bearing, high precision and high stiffness, thus improving assembly efficiency and measurement accuracy of the aircraft engine.

Abstract: Handle is provided for battery operated razors. In some implementations, the handle includes a simple, efficient mechanism for both securing a battery cover to the handle of a razor and at the same time providing a high reliability electrical contact between the battery and electronics of the razor. The mechanism includes a closing system, including a first conductive component slidably attached within the battery cover and biased toward a predetermined axial position, and a second conductive component secured to the interior wall of the grip portion. The first conductive component is configured to interact with the second conductive component and move axially within the battery cover during engagement of the battery cover with the grip portion.

Abstract: Methods and systems for improved matching of on-chip capacitors may comprise a semiconductor die with an on-chip capacitor comprising one or more metal layers. The on-chip capacitor may comprise interdigitated electrically coupled metal fingers. The electrically coupled metal fingers may be arranged symmetrically in the semiconductor die to compensate for non-uniformities in the one or more metal layers. The metal fingers may be arranged with radial symmetry. Metal fingers in a first metal layer may be electrically coupled to metal fingers in a second metal layer. An orientation of metal fingers may be alternated when coupling metal fingers in a plurality of metal layers. The metal fingers may be coupled at the center or the outer edge of the on-chip capacitor. The on-chip capacitor may be configured in a plurality of symmetric sections wherein a boundary between each of the plurality of sections is configured in a zig-zag pattern.

Abstract: The present disclosure disclose a method including: a transmit end transmits at least two mixed pilot signals to a receive end separately by using at least two physical antennas. The at least two mixed pilot signals are separately obtained after preset pilot signals corresponding to logical antennas in the at least two logical antennas are weighted by using a precoding weight matrix. The transmit sends a first codebook subset restriction instruction to the receive end. The first codebook subset restriction instruction carries a rank indication RANK and at least one precoding matrix index PMI. The transmit end receives a channel quality feedback message that is fed back by the receive end according to downlink channel quality of an equivalent channel of a specified antenna. According to the present invention, a suitable serving antenna is selected for a receive end, thereby improving signal quality.

Abstract: Handle is provided for battery operated razors. In some implementations, the handle includes a simple, efficient mechanism for both securing a battery cover to the handle of a razor and at the same time providing a high reliability electrical contact between the battery and electronics of the razor. The mechanism includes a closing system, including a first conductive component slidably attached within the battery cover and biased toward a predetermined axial position, and a second conductive component secured to the interior wall of the grip portion. The first conductive component is configured to interact with the second conductive component and move axially within the battery cover during engagement of the battery cover with the grip portion.

Abstract: A five-degree-of-freedom adjustment and positioning method and apparatus for assembly/measurement of rotor and stator of an aircraft engine; said method comprises adjusting a plane motion and a rotation of a tested piece through composite motion comprising five degrees of freedom: a 360° rotatory motion around a Z axis, a plane motion along an X axis and a plane motion along a Y axis, a rotatory motion around the X axis and a rotatory motion around the Y axis; said apparatus comprises: a clamping mechanism (1), a turning platform component (A), a translational platform component (B) and a rotational platform component (C). The present invention designs a five-degree-of-freedom adjustment and positioning method and apparatus having properties of large load bearing, high precision and high stiffness, thus improving assembly efficiency and measurement accuracy of the aircraft engine.

Abstract: The present invention provides a process for the manufacture of a compound of formula VIIIa and salts forms of VIIIa where Rc is an aryl sulfonic acid

Abstract: An LED light bulb has LEDs (32) mounted on a tubular carrier (22) with open ends. The tube (22) functions as a chimney to promote cooling by creating convection currents through the chimney. The cooling can be entirely passive or it may be active by incorporating a fan (50).