A communication system includes the following elements: a transmitter including a transmission circuit unit configured to generate an RF signal for transmitting data and an electric-field-coupling antenna configured to transmit the RF signal as an electrostatic field; a receiver including an electric-field-coupling antenna and a reception circuit unit configured to receive and process the RF signal received by the electric-field-coupling antenna; and a surface-wave propagation medium configured to provide a surface-wave transmission line to transmit a surface wave emanating from the electric-field-coupling antenna of the transmitter with low propagation loss.

Communication system and communication apparatus

A method and apparatus for providing power to e.g., a chargeable device via a radio frequency link. In one aspect, a method of providing power to a chargeable device via radio frequency link comprises generating a substantially un-modulated signal. The method further comprises radiating a substantially un-modulated radio frequency (RF) signal to the chargeable device via a transmit antenna based on the substantially un-modulated signal. The method further comprises powering or charging the chargeable device with power delivered by the substantially un-modulated RF signal.

Method and apparatus for delivering energy to an electrical or electronic device via a wireless link

A method and system for providing power to a chargeable device via radio frequency link are provided. In one aspect, a method of providing power to a chargeable device via radio frequency link comprises generating a substantially unmodulated signal. The method further comprises radiating a substantially unmodulated radio frequency (RP) signal to the chargeable device via a transmit antenna based on the substantially unmodulated signal. The method further comprises powering or charging the chargeable device with power delivered by the substantially unmodulated RF signal.

Method and system for powering an electronic device via a wireless link

Apparatus, systems and techniques for using composite left and right handed (CRLH) metamaterial (MTM) structure antenna elements and arrays to provide radiation pattern shaping and beam switching.

Metamaterial antenna arrays with radiation pattern shaping and beam switching

A device for treatment of mitral annulus dilatation comprises an elongate body having two states. In a first of these states the elongate body is insertable into the coronary sinus and has a shape adapting to the shape of the coronary sinus. When positioned in the coronary sinus, the elongate body is transferable to the second state assuming a reduced radius of curvature, whereby the radius of curvature of the coronary sinus and the radius of curvature as well as the circumference of the mitral annulus is reduced.

Device and method for treatment of mitral insufficiency

The invention concerns a dipole antenna of reduced size and with improved impedance bandwidth. The antenna is preferably formed on a dielectric substrate having a plurality of regions, each having a characteristic relative permeability and permittivity. First and second dipole radiating element defining conductive paths can be selectively formed on first characteristic regions of the substrate having a first characteristic permeability and first permittivity. A reactive coupling element can be interposed between the dipole radiating elements for reactively coupling the first dipole radiating element to the second dipole radiating element.

Dipole arrangements using dielectric substrates of meta-materials

A slot fed microstrip patch antenna (300) includes a conducting ground plane (308), the conducting ground plane (308) including at least one slot (306) A dielectric material is disposed between the ground plane (308) and at least one feed line (317), wherein at least a portion of the dielectric layer (313) includes magnetic particles (324) The dielectric layer between the feed line (317) and the ground plane (308) provides regions having high relative permittivity (313) and low relative permittivity (312) At least a portion of the stub (318) is disposed on the high relative permittivity region (313)

Arrangements of microstrip antennas having dielectric substrates including meta-materials

An electronic device includes a package surrounding at least one integrated circuit, a micro-fluidic cooler in the package, and a controller for controlling the micro-fluidic cooler so that the cooling fluid provides evaporative cooling, such as droplet impingement cooling. The electronic device may comprise a power consumption sensor connected to the at least one integrated circuit, and the controller may control the micro-fluidic cooler responsive to the power consumption sensor. A temperature sensor may be connected to the at least one integrated circuit, and the controller may control the micro-fluidic cooler responsive to the sensed temperature. The micro-fluidic cooler may comprise at least one droplet generator for generating and impinging droplets of cooling fluid onto the integrated circuit. The at least one droplet generator may comprise at least one micro-electromechanical (MEMs) pump. The electronic device may also include at least one heat exchanger carried by the package and connected in fluid communication with the micro-fluidic cooler. The package may have a parallelepiped shape with a first pair of opposing major surfaces, a second pair of opposing side surfaces and a third pair of opposing end surfaces. In these embodiments, the at least one heat exchanger may preferably comprise a pair of heat exchangers coupled to the second pair of opposing side surfaces.

Electronic device using evaporative micro-cooling and associated methods

A slot fed microstrip patch antenna (200) includes an electrically conducting ground plane (208), the ground plane (208) having at least one coupling slot (206) and at least a first patch radiator (209). An antenna dielectric substrate material (205) is disposed between the ground plane (208) and the first patch radiator (209), wherein at least a portion of the antenna dielectric (210) includes magnetic particles (214). A feed dielectric substrate (212) is disposed between a feed line (217) and the ground plane (208). Magnetic particles can also be used in the feed line (217) dielectric. Patch antennas according to the invention can be of a reduced size through use of high relative permittivity dielectric substrate portions, yet still be efficient through use of dielectrics including magnetic particles which permit impedance matching of dielectric medium interfaces, such as the feed line (217) into the slot (206).

High efficiency slot fed microstrip patch antenna

The invention concerns an efficient loop antenna of reduced size. The antenna is formed on a dielectric substrate disposed on a conductive ground plane. The substrate has a plurality of regions of differing substrate characteristics. An elongated conductive antenna element is arranged in the form of a loop and disposed on a first region of the substrate. The antenna element can have first and second adjacent end portions separated by a gap. The first region of the substrate has a relative permeability that is higher as compared to a second region of the substrate on which the remainder of the circuitry is disposed. According to one aspect of the invention, the relative permeability of the first region is greater than 1.

Randy T. Pike

Papers

Dipole arrangements using dielectric substrates of meta-materials

Arrangements of microstrip antennas having dielectric substrates including meta-materials

Electronic device using evaporative micro-cooling and associated methods

High efficiency slot fed microstrip patch antenna

Efficient loop antenna of reduced diameter