Intel Corporation

John R Benham

Rajeevan Amirtharajah

Thomas D Simon

Nandu J Marketkar

John Critchlow

Thomas F Knight, Jr

Mark E Naylor

Tao Liang

Yinan Wu

Karl W Wyatt

The present invention provides an apparatus for transferring data through an electromagnetic coupler. The apparatus comprises a transmitter to encode a first plurality of bits into a symbol, a receiver to decode a transferred symbol into a second plurality of bits; and a coupling element having a geometry that provides robust electromagnetic transfer of the symbol and the transferred symbol. For one embodiment of the apparatus, the coupling element has a zig-zag geometry.

Symbol-based signaling device for an electromagnetically-coupled bus system

A system includes a first bus coupler element, a second bus coupler element, and a visual element associated with the second bus coupler element and including a transparent media enabling the second coupler element to be visually aligned with the first coupler element.

Electromagnetic coupler registration and mating

A controller sends signals to an electromagnetic coupler associated with a bus. The signals are arranged to set a coupling strength of the coupler.

Controlling coupling strength in electromagnetic bus coupling

In some embodiments, a hybrid coupler is provided with a resistive coupler to conductively tap a transmission line and an electromagnetic coupler to be disposed next to the transmission line to electromagnetically tap it. Other embodiments are disclosed herein.

Hybrid coupler having resistive coupling and electromagnetic coupling

According to some embodiments, a signal line associated with a printed circuit board is provided. In addition, a conductive trace is electrically connected to a portion of the signal line. At least a portion of the conductive trace may be offset from the signal line, and a dielectric layer may be provided between the signal line and the conductive trace to enhance electromagnetic coupling between them. As a result a hybrid resistance and electromagnetic coupling probe may be provided.

Electromagnetic coupler with direct current signal detection

In some embodiments, a first conducting line, having a characteristic impedance, connects to a digital device while a second conducting line, also having a characteristic impedance, connects to another digital device. An impedance pathway connects the two conducting lines and has an impedance of at least one-third of the first conducting line's characteristic impedance and of at least one-third of the second conducting line's characteristic impedances. Other embodiments are claimed.

Interconnecting of digital devices

Electromagnetic coupling locations are provided along a bus. Devices can be respectively coupled at the locations for communication on the bus. Electromagnetic coupling strengths associated with at least some coupling locations are caused to have different, selected values.

Bus signaling through electromagnetic couplers having different coupling strengths at different locations

The present invention provides a mechanism for supporting high digital bandwidth in a multi-drop bus system. A first device of the system is electrically coupled to a bus. Multiple receiving devices are coupled to the bus through associated electromagnetic couplers having coupling coefficients in a specified range. The geometries of the electromagnetic couplers are selected to reduce variations in the coupling coefficients with changes in the relative positions of the coupler components.

Electromagnetically-coupled bus system

A connector is configured for insertion and removal of a digital device. The connector has contacts arranged to make electrical connection to conductors on the digital device while the digital device is inserted in the connector. A first electromagnetic coupler is connected to at least one of the contacts of the connector. The electromagnetic coupler is configured for electromagnetic coupling at an interface to a second electromagnetic coupler that is connected to a communication bus.

Electromagnetic bus coupling

An assembly (for example, an assembly in the form of an interposer that is distinct from a motherboard and from the devices that communicate with the motherboard) includes electromagnetic couplings. Each of the electromagnetic couplings couples signals being communicated between a device and a bus. Each of the electromagnetic couplings is connected to (a) an associated bus connector to provide connections of the couplings to the bus, and (b) an associated device connector to provide connections of the couplings to the device.

Electromagnetic bus coupling having an electromagnetic coupling interposer

A compact electromagnetic coupler for use with digital transmission system is described. In one embodiment, the apparatus includes a first transmission structure, including a portion having a geometry. A second transmission structure having the geometry and positioned proximate the portion of the first transmission line structure having the geometry to form a compact electromagnetic coupler with the first transmission structure a geometry of the electromagnetic coupler to enable placement within a footprint of a standard card connector. The compact electromagnetic coupler so formed enables reconstruction of the logical state and timing of a signal transmitted along the first transmission structure.

Compact non-linear geometry electromagnetic coupler for use with digital transmission systems

An electromagnetic (EM) coupler including a first transmission structure having a first geometry, and a second transmission structure having a second geometry and forming an EM coupler with the first transmission structure, the first and second geometries being selected to reduce sensitivity of EM coupling to relative positions of the first and second transmission structures is disclosed.

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Westborough, MA, United States of America

John R Benham