34 results about "Passive repeater" patented technology

A storage container assembly includes a container having a metal side wall, and a passive wireless repeater mounted on the side wall. The repeater includes a first antenna on one side of the side wall, a second antenna on an opposite side of the side wall, and an electrical connection between the first antenna and the second antenna. The electrical connection may be in the form of a first connector mounted to the first antenna and a second connector mounted to the second antenna.

The present invention discloses a repeater antenna (130, 200) comprising a plurality of radiation elements (210-260) arranged in a first electrically conducting layer or plane. The repeater antenna also comprises a ground plane (320) spaced apart from the radiation elements by a layer of dielectric material (310), and the radiation elements are each given such an extension (L1, L2, L3) and such a distance (D12, D23) to neighbouring radiation elements that an incident electromagnetic wave (110) will reflect from the repeater antenna at an angle (a2) that by a predetermined amount will be greater or smaller than the incident angle (a2) of the electromagnetic wave. The repeater antenna is plane, and can be either curved or flat.

A multi-coil repeater is provided for wireless power transfer from a transmitter, having an adjustable operation frequency, to a receiver coil having a ferrite layer behind it, the multi-coil repeatercomprising: an array of passive repeater transmitting coils (RTC) in a single layer; a ferrite layer having a receiver facing side and a transmitter facing side, wherein the array is positioned on the receiver facing side; and a repeater receiving coil (RRC) positioned on the transmitter facing side; wherein each RTC of the array has a resonance capacitor to form a branch having a resonance frequency, wherein all branches are parallelly wired together, wherein a receiver placed above the receiver facing side causes the resonance frequency of at least one branch situated directly below the receiver to drop to a different resonance frequency; and wherein the transmitter adjusts its operational frequency to the RRC to be close to the different resonance frequency of the at least one branch.

A repeater device comprises a periodic array of alternating metallic phase shifting elements, the array being periodic in at least one axis, formed on a first surface of a dielectric substrate, with an opposite surface of the dielectric substrate having a ground plane formed thereon, wherein each phase shifting element provides from 0° to 360° phase shifting in the microwave frequency range. The repeater device can be utilized in a microwave network.

The invention relates to a tire (1) equipped with a passive transponder (150) comprising at least one radiating antenna (151) embedded in an electrically insulating elastic body mixture to form a patch (100), said passive transponder (150) is able to communicate with a radio frequency reader placed on the outside of the tire (1). The patch (100) extends axially between the axially inner end of the carcass ply (3) and the inner surface (13) of the tire (1) and extends radially a distance between the bead toes ( 7) and the distance between the bead radially outer end (12).

The invention discloses a digitized monitoring method for a Chinese sturgeon natural reserve, belonging to an aquatic animal monitoring method which aims to solve the problems of data storage marks, underwater base station receiving and wireless transmission. The method has the technical scheme that acoustic marks, wireless marks and integrated passive repeater marks are adopted to singly mark ormultiply mark young Chinese sturgeons. The method is characterized in that the center of the reserve is used as a base point; fixed float bowls are arranged every 7km in the north-south direction, andeach float bowl is provided with a sonar signal receiving device; the signal receiving in the north-south direction covers a water area of about 60km wide; the sonar receiving device is used for receiving, and data signals are amplified and transmitted to a base station on land in a wireless transmission mode; a young Chinese sturgeon reserve is provided with 4-7 environment monitoring stations,and on-line water quality monitoring equipment is utilized to monitor the conditions of the hydrology, the meteorology, the water quality, and the like in real time; and obtained information is transmitted back to the base station in the wireless transmission mode. The method is used for Chinese sturgeon monitoring.