Abstract:
A configuration for routing electrical signals between a conventional electronic integrated circuit (IC) and an opto-electronic subassembly is formed as an array of signal paths carrying oppositely-signed signals on adjacent paths to lower the inductance associated with the connection between the IC and the opto-electronic subassembly. The array of signal paths can take the form of an array of wirebonds between the IC and the subassembly, an array of conductive traces formed on the opto-electronic subassembly, or both.
Abstract:
A plurality of pairs of differential transmission lines (102, 104, 106, 108) includes a set of pairs of differential transmission lines (104, 106, 108) with each pair of differential transmission lines from the set of pairs of differential transmission lines including at least one twist (118-1 to 118-6) to alternate current direction. The twists (118-1 to 118-6) of the differential transmission lines (104, 106, 108) are arranged at distance locations (D1 to D9) such that alternating current directions substantially eliminate cross-talk across the plurality of pairs of differential transmission lines (102, 104, 106, 108).
Abstract:
A configuration for routing electrical signals between a conventional electronic integrated circuit (IC) and an opto-electronic subassembly is formed as an array of signal paths carrying oppositely-signed signals on adjacent paths to lower the inductance associated with the connection between the IC and the opto-electronic subassembly. The array of signal paths can take the form of an array of wirebonds between the IC and the subassembly, an array of conductive traces formed on the opto-electronic subassembly, or both.
Abstract:
The present invention involves connectors for reducing Far-End Crosstalk (FEXT) through the use of novel polarity swapping to negate the cumulative effect of FEXT. Skew adjustment is used to improve the FEXT cancellation from polarity swapping. The polarity reversal location or locations among FEXT sources are optimized to achieve maximum FEXT cancellation. The novelty polarity swapping technique can be applied to a wide variety of connectors, such as mezzanine connectors, backplane connectors, and any other connectors that can benefit from FEXT reduction.
Abstract:
The present invention involves chip-to-chip communication systems for reducing Far-End Crosstalk (FEXT) through the use of novel polarity swapping to negate the cumulative effect of FEXT. Skew adjustment is used to improve the FEXT cancellation from polarity swapping. The polarity reversal location or locations among FEXT sources are optimized to achieve maximum FEXT cancellation. The novelty polarity swapping technique can be applied to a wide variety of systems that can benefit from FEXT reduction.
Abstract:
A method for connecting circuit boards, comprising: (i) preparing a first circuit board having connection parts assigned to end parts of a plurality of conductor wirings, and a second circuit board having connection parts assigned to corresponding end parts of a plurality of conductor wirings; (ii) disposing the connection parts of the first circuit board to face the connection parts of the second circuit board with a thermosetting adhesive film between the connection parts of the circuit boards; and (iii) applying heat and pressure to the connection parts and to the thermosetting adhesive film sufficiently high to thoroughly push away the adhesive film so as to establish electrical contact between connection parts of the circuit boards facing each other and to allow for curing of the adhesive; wherein the conductor wirings constituting the connection parts of at least one of the first and second circuit boards contain non-linear wirings.
Abstract:
A communications connector includes: a dielectric mounting substrate (10); at least four pairs of conductors(121-128) mounted on the mounting substrate, each of the conductors including a free end segment (121a-128b), each of the free end segments being positioned in side-by-side and generally parallel relationship; and at least four pairs of terminals (41-48) mounted on the mounting substrate, wherein each of the pairs of terminals is electrically connected to a respective pair of conductors. A first pair of conductor free end segments (124a-125a) is immediately adjacent each other, a second pair of conductor free end segments (121a, 122a) is immediately adjacent each other and positioned one side of the first pair, a fourth pair of conductor free end segments (123a, 126a) is immediately adjacent each other and positioned on an opposite side of the first pair, and a third pair of conductor free end segments sandwiches the first pair, with one of the conductor free end segments of the third pair (123a) being disposed between the first and second pairs, and the other of the conductor free end segments (126a) being disposed between the first and fourth pairs. Each of the first, second and fourth pairs of conductors includes a crossover between the conductors of the pairs, and wherein the third pair of conductors includes two crossovers between its conductors.
Abstract:
Zur elektrischen Anpassung eines elektrischen Bauelements ist ein Netzwerk mit einer Transformationsleitung angegeben, die in oder auf einem vorzugsweise keramischen Substrat ausgebildet ist. Sie weist eine vorgegebene elektrische Länge zur Erzielung einer gewünschten Phasenschiebung auf und umfaßt zumindest zwei miteinander verbundene, jeweils gefaltete, in verschiedenen Leiterebenen angeordnete elektrische Leiter (LE), deren gerade Abschnitte rechtwinklig miteinander verbunden sind. Zueinander parallele, in unterschiedlichen Leiterebenen liegende Leitungsabschnitte überlappen teilweise und sind auf diese Weise kapazitiv miteinander gekoppelt, wobei durch die Einstellung der einzelnen Überlappungsflächen die kapazitive Kopplung angepaßt und so die vorgegebene elektrische Länge und die vorgegebene Impedanz der Transformationsleitung erreicht ist.