Microelectronic package communication is described using radio interfaces connected through wiring. One example includes a system board, an integrated circuit chip, and a package substrate mounted to the system board to carry the integrated circuit chip, the package substrate having conductive connectors to connect the integrated circuit chip to external components. A radio on the package substrate is coupled to the integrated circuit chip to modulate the data onto a carrier and to transmit the modulated data. A radio on the system board receives the transmitted modulated data and demodulates the received data, and a cable interface is coupled to the system board radio to couple the received demodulated data to a cable.

A compact silicon waveguide mode converter, a dielectric meta-surface structure based on periodical oblique subwavelength perturbations, including a top silicon structure with oblique subwavelength perturbations etched in certain periods with period length of Λ, a duty cycle and an oblique angle θ on the SOI substrate. The invention adopts an all-dielectric meta-surface structure with oblique subwavelength perturbation, which can achieve a compact mode conversion from fundamental mode to arbitrary high-order mode of silicon waveguide, and can improve the optical communication capacity greatly.

A node of a radio frequency waveguide system can include a waveguide interface, a signal splitter, a power rectifier and conditioner, a communication filter, and a network processor. The waveguide interface is configured to communicate through a waveguide in the radio frequency waveguide system. The signal splitter is configured to split a radio frequency transmission received at the waveguide interface between a power path and a communications path within the node. The power rectifier and conditioner are configured to produce a conditioned power signal based on power received through the power path. The communication filter of the communications path is configured to produce a filtered communication signal. The network processor is powered by the conditioned power signal and configured to extract encoded information from the filtered communication signal.

A system for radio frequency transmission through a window is provided. The system may include a first wireless coupler, a second wireless coupler, and one or more antennas. The first wireless coupler may be attached to a first side of the window and configured to transmit or receive radio frequency signals. The second wireless coupler attached to a second side of the window and aligned with the first wireless coupler. The first wireless coupler may be configured to transmit or receive the radio frequency signals from the first wireless coupler to the second wireless coupler through the window. The one or more antennas may be electrically connected to the second wireless coupler. One or more radios may transmit or receive the radio frequency signals to or from the one or more antennas.

Disclosed are various embodiments for exciting a guided surface waveguide probe to create a plurality of resultant fields that are substantially mode-matched to a Zenneck surface wave mode of a surface of a lossy conducting medium and embodiments for receiving energy from a Zenneck surface wave launched on the lossy conducting medium.

Disclosed are various embodiments for exciting a guided surface waveguide probe to create a plurality of resultant fields that are substantially mode-matched to a Zenneck surface wave mode of a surface of a lossy conducting medium and embodiments for receiving energy from a Zenneck surface wave launched on the lossy conducting medium.

Racks and rack pods to support a plurality of sleds are disclosed herein. Switches for use in the rack pods are also disclosed herein. A rack comprises a plurality of sleds and a plurality of electromagnetic waveguides. The plurality of sleds are vertically spaced from one another. The plurality of electromagnetic waveguides communicate data signals between the plurality of sleds.

A wireless charging system includes a hollow electromagnetic waveguide and a platform that, when placed inside the waveguide, positions one or more wireless devices to absorb energy from an electromagnetic field propagating along the waveguide. The system also includes first and second couplers located near opposite ends of the waveguide. The first coupler, when driven with an electrical signal, couples energy from the electrical signal into the electromagnetic field. At the same time, the second coupler couples energy from the electromagnetic field into an electrical receiving signal. The second coupler may be connected to a dissipative load to dissipate the energy of the electrical receiving signal. Alternatively, the electrical receiving signal can be processed to power the wireless charging system. The wireless charging system charges the wireless devices with high efficiency regardless of their positions inside the waveguide, thereby ensuring that the wireless devices charge at a similar rate.

A wireless charging system includes a hollow electromagnetic waveguide and a platform that, when placed inside the waveguide, positions one or more wireless devices to absorb energy from an electromagnetic field propagating along the waveguide. The system also includes first and second couplers located near opposite ends of the waveguide. The first coupler, when driven with an electrical signal, couples energy from the electrical signal into the electromagnetic field. At the same time, the second coupler couples energy from the electromagnetic field into an electrical receiving signal. The second coupler may be connected to a dissipative load to dissipate the energy of the electrical receiving signal. Alternatively, the electrical receiving signal can be processed to power the wireless charging system. The wireless charging system charges the wireless devices with high efficiency regardless of their positions inside the waveguide, thereby ensuring that the wireless devices charge at a similar rate.

The invention relates to a phase sequencing three-phase network comprising a first side connected to a second side via the network. The first side comprises one endpoint (EP1) and the second side comprises three endpoints (EP2, EP3, and EP4). The network comprises five nodes (NP1-NP5) interconnected via feed line sections (FP1-FP10) comprising at least one transmission line section (R11-R102) each. The invention further relates to an optimization method for the network for deciding characteristic impedance and length of each transmission line section (R11-R102).