33 results about "Passive repeater" patented technology

Some embodiments provide a relatively small antenna apparatus that acts as a passive repeater. The antenna apparatus can be designed to facilitate radio frequency (RF) signal gain for a collection or range of frequencies. In some embodiments, the antenna apparatus is placed near a device with a wireless receiver and/or transmitter, where the antenna apparatus causes increased RF signal intensity at the device by coupling RF signals from a proximate area of higher RF signal intensity into the area around the device. Accordingly, in some instances, an embodiment of the antenna apparatus can be used to increase the RF signal intensity in a null spot or dead spot by coupling RF signal energy from an area proximate to the null spot that has higher RF signal intensity.

A passive repeater includes: a connecting transmission circuit having first and second opposing ends and made of a flexible material for substantially conforming to a portion of a structure, the structure having first and second opposing sides; first and second antenna elements respectively coupled to the first and second opposing ends of the connecting transmission element; and first and second affixing elements respectively coupled to the first and second antenna elements for attaching the first and second antenna elements to the first and second opposing sides of the structure, wherein the first and second antenna elements are operable to transfer a signal from the first opposing side of the structure to the second opposing side of the structure via the connecting transmission circuit.

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.

A wireless repeater having dual cancellation loops is presented. A first cancellation loop is configured to remove an undesirable signal resulting from a design or manufacture of the repeater. A second cancellation is configured remove undesirable signals cause by a real-time changing environment where the repeater is deployed.

Transmission of power at low frequencies, e.g. less than 1 MHz The power can be transmitted in various ways, using different structures included stranded wire such as Litz wire. The inductor can also use cores of ferrites for example. Passive repeaters can also be used.

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 or multiply 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, and each 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.

The present invention discloses a repeater antenna comprising a plurality of radiation elements arranged in a first electrically conducting layer or plane. The repeater antenna also comprises a ground plane spaced apart from the radiation elements by a layer of dielectric material, and the radiation elements are each given such an extension (L₁, L₂, L₃) and such a distance (D₁₂, D₂₃) to neighboring radiation elements that an incident electromagnetic wave will reflect from the repeater antenna at an angle (α₂) that by a predetermined amount will be greater or smaller than the incident angle (α₂) of the electromagnetic wave. The repeater antenna is plane, and can be either curved or flat.

This invention discloses an underground space passive relay communication system compose of a fixed or mobile communication base station, a passive relay unit, a power distribution/synthesizer and a low loss cable which mounts a passive relay in tunnel/and locomotive at the same time to utilize the effective space of the tunnel based on the relations between medium waveguide wave section to realize communication in tunnel with the least transmission loss.

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.

Embodiments of the invention may include a mm-wave waveguide. In an embodiment, the mm-wave waveguide may include a first dielectric waveguide and a second dielectric waveguide. A conductive layer may be used to cover the first dielectric waveguide and the second dielectric waveguide in some embodiments. Furthermore, embodiments may include a repeater communicatively coupled between the first dielectric waveguide and the second dielectric waveguide. In an embodiment, the repeater may be an active repeater or a passive repeater. According to an embodiment, a passive repeater may be integrated within the dielectric waveguide. The passive repeater may include a dispersion compensating material that produces a dispersion response in a signal that is substantially opposite to a dispersion response produced when the signal is propagated along the dielectric waveguide.

An embodiment of the invention provides a transmission type passive repeater having two or more antenna arrays, each array comprised of a plurality of antenna elements. Each antenna array has an associated region. An aperture is defined by the antenna arrays with which energy at respective antenna arrays passes between each of the regions. Another embodiment of the invention provides a reflective passive repeater having an aperture. Energy received at the aperture is reflected back from the aperture. The aperture is configured to provide a conformal mapping between two regions as determined by complex coupling by individual antenna elements.

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 repeater comprising: 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.

The invention relates to the technical field of wireless charging and discloses a low-cost wireless charging passive repeater comprising a master coil, a secondary coil and a quarter-wavelength impedance converter circuit. The master and secondary coils are connected through the quarter-wavelength impedance converter circuit. The low-cost wireless charging passive repeater combines a charging coil and a passive circuit, realizes a scheme of charging a wearable device by using a conventional wireless charging transmitter (PTU). Compared with a conventional scheme, the passive repeater does not need a circuit or a power supply line.

A millimeter wave signal and energy simultaneous transmission passive relay disclosed by the present invention comprises a passive relay body and a mounting seat, a turntable is mounted on the upper side of one end of the passive relay body through a first connecting shaft, antennas are mounted on two sides of the turntable through second connecting shafts, heat conduction seats are mounted at two ends of the passive relay body, and the heat conduction seats are mounted on the mounting seat. The passive repeater comprises a passive repeater body, an installation base is installed on one side of the passive repeater body, a supporting shaft is installed on the lower side of the passive repeater body, a connecting plate is installed in the installation base, and one end of the supporting shaft is hinged to the connecting plate through a third connecting shaft and a rotating base. According to the passive repeater provided by the invention, the antenna can be longitudinally rotated and horizontally rotated, so that signal receiving and transmitting processing at different angles can be met, and one side of the passive repeater body can be conveniently mounted and fixed through the mounting seat, the connecting plate, the supporting shaft, the third connecting shaft and the rotating seat.