Abstract:
A first artwork layer having a first adaptable-mask section allows a graded amount of light to pass into an underlying first photoresist layer. Subsequent to developing the first photoresist layer, the graded amount of light creates a rounded geometric void used as a mold or sidewall for the creation of at least a lower portion of a rounded trace. A dielectric layer is laminated upon the lower portion and a second artwork layer having an second adaptable-mask section allows a graded amount of light to pass into a second photoresist layer. Subsequent to developing the second photoresist layer, the graded amount of light creates a rounded geometric void used as a mold or sidewall for the creation of at least an upper portion of a rounded trace. The photoresist and dielectric layers are removed resulting in a circuit apparatus having a rounded differential pair trace.
Abstract:
Disclosed is a high frequency tuner module, including: a circuit component; signal lines; a GND line; and a multilayer board formed by laminating a plurality of layers, wherein the circuit component is placed on a top layer surface of the multilayer board; the signal lines and the GND line are formed inside the multilayer board; and among the signal lines, high frequency signal transmitting signal lines to transmit a high frequency signal are formed on a single layer inside the multilayer board.
Abstract:
A communication jack has a housing with a face having a plug receiving aperture. A plurality of conductive path pairs extends from corresponding plug interface contacts located at the plug receiving aperture to corresponding output terminals. A first circuit board is connected to the plug interface contacts and a second circuit board is connected to the plug interface contacts and the output terminals. The first circuit board has a first single stage of crosstalk compensation with opposite polarity of the crosstalk of a plug for a first combination of the conductive path pairs. The second circuit board includes a second single stage of opposite polarity crosstalk compensation for some of the conductive path pairs not compensated on the first circuit board. The stages cancel substantially all of the crosstalk caused by the plug, for the signal operating frequencies, for corresponding combinations of the conductive path pairs.
Abstract:
A capacitor embedded printed circuit board (PCB) includes a multilayer polymer capacitor layer with a plurality of polymer sheets. One or more first inner electrodes and second inner electrodes, separated by one or more of the plurality of polymer sheets, are alternately disposed to form a pair. A plurality of first extended electrodes and second extended electrodes protrude from the first inner electrodes and second inner electrodes, respectively. One or more insulating layers are laminated on one or both surfaces of the multilayer polymer capacitor. A plurality of first via holes for capacitor, and a plurality of second via holes for capacitor, penetrating the multilayer polymer capacitor layer are connected to the first extended electrodes and the second extended electrodes, respectively. The plurality of the first and second extended electrodes are alternately disposed to be opposite to each other.
Abstract:
A semiconductor memory arrangement includes a circuit board having at least a first layer and a second layer, a plurality of memory units, and a first control device and a second control device adapted to receive command and address signals. A first bus system is disposed in the first layer of the circuit board and coupled to the first control device and to a first group of memory units of the plurality of memory units to transmit the command and address signals to the first group of memory units. A second bus system is disposed in the second layer of the circuit board and coupled to the second control device and to a second group of memory units of the plurality of memory units to transmit the command and address signals to the second group of memory units.
Abstract:
In a manufacturing method for a semiconductor device having a coil layer part on a substrate, two support substrates each having a flat surface are prepared, and a component member is formed on the flat surface of each of the support substrates. The component member includes a wiring portion having a predetermined pattern and an insulation film surrounding the wiring portion. The wiring portion is provided with a connecting portion exposing from the insulation film. A coil layer part is formed by opposing and bonding the component members formed on the support substrates to each other while applying pressure in a condition where the flat surfaces of the support substrates are parallel to each other. A coil is formed in the coil layer part by connecting the wiring portions through the connecting portions.
Abstract:
Disclosed are a printed circuit board for improving the tolerance of embedded capacitors and a method of manufacturing the same. The printed circuit board having embedded capacitors is manufactured by transferring and embedding a circuit layer having a lower electrode formed through an additive process into a resin insulating layer, and thereby is minimized in the circuit tolerance conventionally caused by an etching process to thus be applied to capacitors for RF matching.
Abstract:
A circuit substrate includes a first pair of ground lines, a second pair of ground lines, a plurality of first connection lines, a plurality of second connection lines and a plurality of conductive pillars. The first and second pairs of ground lines are located on first and second surfaces of the substrate, respecteively. The pillars are located in the substrate and vertically conducted between the first pair of ground lines and the second connection lines and between the second pair of ground lines and the first connection lines, and the first and second pairs of ground lines are conducted, so that a 3-D grounding circuit loop is formed. Moreover, a first pair of signal lines is disposed between the first connection lines for grounding and a second pair of signal lines is disposed between the second connection lines for grounding to get a better signal integrity.
Abstract:
A communication jack has a housing with a face having a plug receiving aperture. A plurality of conductive path pairs extends from corresponding plug interface contacts located at the plug receiving aperture to corresponding output terminals. A first circuit board is connected to the plug interface contacts and a second circuit board is connected to the plug interface contacts and the output terminals. The first circuit board has a first single stage of crosstalk compensation with opposite polarity of the crosstalk of a plug for a first combination of the conductive path pairs. The second circuit board includes a second single stage of opposite polarity crosstalk compensation for some of the conductive path pairs not compensated on the first circuit board. The stages cancel substantially all of the crosstalk caused by the plug, for the signal operating frequencies, for corresponding combinations of the conductive path pairs.
Abstract:
A printed circuit board (PCB) capable of decreasing wireless wide area network (WWAN) noise generated due to internal signal interference occurring in the PCB is disclosed. The PCB printed circuit board includes a first layer, a second layer, and at least one insulating layer formed between the first and second layers. The PCB board further includes a first signal line group disposed on the first layer while including a plurality of first signal lines each supplying a first signal, isolation patterns disposed on the first layer such that the isolation patterns are arranged between adjacent ones of the first signal lines, respectively, to prevent the adjacent first signal lines from interfering with each other, and a second signal line group disposed on the second layer while including a plurality of second signal lines each supplying a second signal different from the first signal. The second signal line group corresponds to the isolation patterns.