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| Number | Title | Issue Date |
| 8125289 | Transmission line pairs with enhanced coupling therebetween and negligible coupling to ground According to one exemplary embodiment, a circuit board for reducing dielectric loss, conductor loss, and insertion loss includes a pair of transmission lines. The pair of transmission lines has sufficient thickness to cause substantial broadside electromagnetic coup... | 02/28/2012 |
| 8120441 | Circuit board with a reference plane having multi-part non-conductive regions for decreased crosstalk A circuit board includes a signal line plane and a reference plane. The signal line plane has at least a first transmission line and a second transmission line formed thereon. The reference plane has a conductive region and at least a non-conductive region. The firs... | 02/21/2012 |
| 8076989 | Differential waveguide system connected to front and rear network elements A waveguide system comprises a differential waveguide with at least one first and one second signal conductor, which are coupled to one another within the waveguide, and a divider network with front network elements disposed at a front end of the waveguide in the si... | 12/13/2011 |
| 8063713 | Differential transmission line having a plurality of leakage resistors spaced between the transmission line Designs and techniques for transmitting electrical signals via transmission lines on integrated circuits without distortion and at the speed of light. In one implementation, one or more leakage resistors are connected between the two conductor wires of a transmissio... | 11/22/2011 |
| 8040200 | Parallel differential transmission lines having an opposing grounding conductor separated into two parts by a slot therein In a differential transmission line, a substrate has first and second surfaces parallel to each other, and a first grounding conductor is formed on the second surface of the substrate. A dielectric layer is formed on the first grounding conductor, and a second groun... | 10/18/2011 |
| 8031029 | Differential signal transmission cable and method for compensating length offset thereof A compensation method compensates for a length offset between a first transmission line and a second transmission line of a differential signal transmission. The compensation method includes calculating a transmission speed of a first signal in the first transmissio... | 10/04/2011 |
| 7598823 | High-speed digital transmission signal line for providing a desired dynamic resistance A high-speed digital transmission signal line providing better dynamic resistance to be applied in an LVDS transmission system to function as an electronic line, an optical line, and a serial advanced technology attachment (SATA), comprises a conductive layer in thi... | 10/06/2009 |
| 7592879 | Integrated circuit with at least one integrated transmission line An integrated circuit is disclosed that includes at least one integrated transmission line for the transmission of a high-frequency differential signal with a number of at least two series-connected line arrangements, each of which has a differential input, a differ... | 09/22/2009 |
| 7545233 | Layout configuration of differential signal transmission lines for printed circuit board having offset vias A layout configuration of a differential pair for a printed circuit board (PCB) having a signal plane is provided. In a preferred embodiment, the layout configuration comprises: a differential pair on the signal plane; a pair of vias abutting the differential pair, ... | 06/09/2009 |
| 7518462 | Transmission line pair having a plurality of rotational-direction reversal structures A transmission line pair has two transmission lines placed adjacent to each other in parallel to a signal transmission direction of the transmission lines as a whole. Each of the transmission lines includes a first signal conductor which is placed on one surface of ... | 04/14/2009 |
| 7495523 | Differential transmission line having curved section with reduced line width A differential transmission line includes: a substrate; a ground conductor layer; and a first and a second signal conductor disposed in parallel to each other on the substrate. The first signal conductor and the ground conductor layer compose a first transmission li... | 02/24/2009 |
| 7495522 | Signal tranmission line having contact portion A signal transmission line used in a printed circuit board (PCB), the signal transmission line comprises a driving terminal for driving a signal, a contact portion, the signal line connected with the driving terminal and the contact portion to transmit the signal wh... | 02/24/2009 |
| 7429902 | Differential transmission line having a curved region with selected radius of curvature A differential transmission line includes: a substrate; a ground conductor layer; and a first and a second signal conductor disposed in parallel to each other on the substrate. The first signal conductor and the ground conductor layer compose a first transmission li... | 09/30/2008 |
| 7408424 | Compact RF circuit with high common mode attenuation A compact RF differential circuit has a first differential I/O port comprising a first pair of signal carrying terminals which is connected to a source termination and a second differential I/O port comprising a second pair of signal carrying terminals which is conn... | 08/05/2008 |
| 7405634 | Method for altering the delay properties of a transmission line using compensation tabs An improved method and apparatus for altering the effective electrical length of trace on a circuit board. In the present invention small tabs of etch are routed perpendicular to the trace in the unused areas between adjacent traces. In an embodiment of the inventio... | 07/29/2008 |
| 7403080 | Transmission line apparatus having conductive strips coupled by at least one additional capacitance element A transmission line apparatus includes: a substrate 101 with a ground conductor plane; and first and second signal strips 102a, 102b supported on the substrate 101 in parallel with each other. The apparatus further includes ... | 07/22/2008 |
| 7397320 | Non-uniform transmission line for reducing cross-talk from an aggressor transmission line A non-uniform transmission line, including at least a first section with length L1, uniform width W1 and thickness h1, and a second section with length L2, uniform width W2 and thickness h2, joined together to form a composi... | 07/08/2008 |
| 7388448 | Semi-suspended coplanar waveguide on a printed circuit board A printed circuit board includes two differential signal traces, a layer of core material, a layer of filler material, and a ground plane. The filler material is replaced by an air core under the differential signal traces. ... | 06/17/2008 |
| 7331723 | Enhanced coplanar waveguide and optical communication module using the same Provided are an enhanced structure of a coplanar waveguide that is a kind of transmission line used for optical communication for radio frequency (RF), and an optical communication module employing the same. While having a basic structure including a conductive stri... | 02/19/2008 |
| 7330084 | Printed circuit board having a bond wire shield structure for a signal transmission line A printed circuit board for a high-speed semiconductor package uses bonding wires as a shield structure, e.g., to shield an open portion of signal transmission lines, and thereby reduce the likelihood of coupling noises, e.g., between signal transmission lines. ... | 02/12/2008 |
| 7301418 | Differential transmission line having curved differential conductors and ground plane slots A differential transmission line includes: a substrate; a ground conductor layer; and a first and a second signal conductor disposed in parallel to each other on the substrate. The first signal conductor and the ground conductor layer compose a first transmission li... | 11/27/2007 |
| 7283015 | Device for impedance matching radio frequency open wire transmission lines An impedance matching device comprises a dielectric material having a ground plane affixed to one surface, a microstripline conductor disposed on an opposite surface, and a movable dielectric plate. The movable dielectric plate has a higher dielectric constant than ... | 10/16/2007 |
| 7265645 | Matched-impedance high-bandwidth configuration jumper The present invention provides a matched-impedance jumper that is operable to connect pairs of differential signal conductors to provide improved signal transmission characteristics. In an embodiment of the invention, the impedance-matched jumper is used to connect ... | 09/04/2007 |
| 7250834 | Bandpass filter for differential signal, and multifrequency antenna provided with same There is provided a bandpass filter for a differential signal applicable to a device having a wide passband, being a device for transmitting a signal using a differential signal. Respective lines 1 and 2 and lines 3 and 4 are provide on t... | 07/31/2007 |
| 7248130 | High power combiner/divider A power combiner/divider is disclosed that employs triaxial transmission line structures operatively coupled to provide a desired number of input/output ports. A balun is operatively coupled to the triaxial transmission line structures, and is adapted to couple out ... | 07/24/2007 |
| 7243033 | Inspection apparatus An inspection apparatus inspects an inspected object based on a waveform quality of a signal that the inspected object outputs. The inspection apparatus has a power supply section which outputs a control signal that controls an output of the inspected object, a wave... | 07/10/2007 |
| 7221245 | Balanced microwave cable adaptor having a connector interface secured by a slidable nut An adaptor includes a connector interface having a first coaxial structure with a first center pin configured to be coupled to a first center conductor of a first coaxial transmission line and a second coaxial structure with a second center pin configured to be coup... | 05/22/2007 |
| 7202755 | Semi-suspended coplanar waveguide on a printed circuit board A printed circuit board includes two differential signal traces, a layer of core material, a layer of filler material, and a ground plane. The filler material is replaced by an air core under the differential signal traces. ... | 04/10/2007 |
| 7196597 | Bandpass filter for differential signal, and multifrequency antenna provided with same There is provided a bandpass filter for a differential signal applicable to a device having a wide passband, being a device for transmitting a signal using a differential signal. Respective lines 1 and 2 and lines 3 and 4 are provide on t... | 03/27/2007 |
| 7180998 | Regulator for impedance balance of a transmission wire pair The present invention relates to a regulator for impedance balancing of first (104) and second wires (106) of a transmission wire pair having respective first and second impedances, the regular comprising: means (1... | 02/20/2007 |
| 7160154 | Grouped element transmission channel link termination assemblies Termination assemblies for terminating high-frequency data signal transmission lines include housings with one or more cavities that receive ends of the transmission line therein. The transmission line typically includes a dielectric body and a plurality of conducti... | 01/09/2007 |
| 7157987 | Transmission line having a transforming impedance A transmission line for high-frequency differential signals and having a transforming impedance is formed into a substrate. The transmission line is comprised of a first slot, the opposing surfaces of which carry a conductive surface capable of carrying electrical s... | 01/02/2007 |
| 7154355 | Transmission line with a transforming impedance and solder lands A transmission line for high-frequency differential signals and having a transforming impedance is formed into a substrate. The transmission line is comprised of a slot, the opposing surfaces of which carry a conductive surface capable of carrying electrical signals... | 12/26/2006 |
| 7151420 | Electromagnetically shielded slot transmission line An electro-magnetically shielded slot-transmission line is formed by metallizing the opposing sides of a slot cut through a dielectric substrate. A ground plane is deposited on the bottom of the substrate. Conductive vias through the substrate and that contact the g... | 12/19/2006 |
| 7116190 | Slot transmission line patch connector A slot transmission line patch connector, capable of bridging one or more slot transmission lines is comprised of an elongated dielectric connector body. The dielectric connector body is formed to have one or more slot transmission lines. Each transmission line form... | 10/03/2006 |
| 7113002 | Transmission cable structure for GHz frequency band signals and connector used for transmission of GHz frequency band signals A differential signal transmission cable structure for transmitting differential signals having GHz frequency band in the present invention is provided with a differential signal transmission pair cable 30 connecting a driver circuit 23a and a r... | 09/26/2006 |
| 7109822 | Method and apparatus for rapid prototyping of monolithic microwave integrated circuits A system is provided for rapidly prototyping monolithic microwave integrated circuit modules to provide an experimental structure that can be physically made to operate by stereolithographically rendering an SLA part directly from the designer's drawings and by coat... | 09/19/2006 |
| 7102456 | Transmission line A method of controlling a characteristic impedance of a transmission line, and a transmission line implementing the method. According to a basic version of the invention a distance between longitudinal currents are controlled, thereby controlling a characteristic in... | 09/05/2006 |
| 7088200 | Method and structure to control common mode impedance in fan-out regions A method and structure are provided to control common mode impedance in fan-out regions for printed circuit board applications. A differential pair transmission line includes a narrow signal trace portion in the fan-out region and a wider signal trace portion outsid... | 08/08/2006 |
| 7068119 | Fixed impedance shielded differential pair with pairs of side ground plane vias A system and method for transferring information at a fast rate between add-in cards in a rack mount system are described. In one embodiment, the invention allow all the add-in cards within the rack mount system to be interconnected. All the main cards within the ra... | 06/27/2006 |
