5 results about "Passive repeater" patented technology

Systems, methods, and computer-readable media are described herein which utilizes and controls an electromagnetic energy beam steering apparatus. The electromagnetic energy beam steering apparatus uses directional properties of a Luneburg lens to receive RF energy from one or more points of the Luneburg lens and re-transmits the RF energy from a different point of the Luneburg lens to focus the RF energy in a desired direction. The electromagnetic energy beam steering apparatus may take a form of a passive repeater, an active repeater, or a multipath active repeater.

A 4G and / or 5G signal communication unit is able to be attached to a glazing unit that includes housing with at least side parts and a cover. A communication device is fixed inside the housing and is surrounded by the side parts and the cover. The 4G and / or 5G signal communication device has at least one antenna. The housing includes a matching element. A communication system includes a glazing unit, at least the 4G and / or 5G signal communication unit and a provider fixed station or active or passive repeater, which is placed at least at 1 m outside from the glazing unit. The 4G and / or 5G signal communication unit is fixed to the glazing unit at the opposite side from the provider fixed station or active or passive repeater.

The application discloses an optical fiber communication passive relay system and method, belonging to the field of optical fiber communication, comprising a first end station and a second end station located at both ends of a communication link, and a passive gain unit located in the middle of the communication link, wherein the first end station and the passive gain unit are connected in series through anti-resonant hollow optical fibers, and the second end station and the passive gain unit are also connected in series through anti-resonant hollow optical fibers; the passive gain unit comprises a solid doped optical fiber and two mode field adapters arranged at both ends of the solid doped optical fiber and used for connecting the anti-resonant hollow optical fibers; the first end station is used for transmitting signal light and pump light to the passive gain unit through the anti-resonant hollow optical fibers; and the passive gain unit amplifies the signal light by using the received pump light and transmits the amplified signal light to the second end station through the anti-resonant hollow optical fibers. The application can amplify the signal light by using the passive gain unit, does not need power supply, simplifies the structure of a submarine cable, reduces the cost, and improves the single-fiber transmission capacity and distance.

There is provided a water meter system, comprising: a water meter 6 for measuring a consumption of water and for generating consumption data indicative of the consumption of water; a meter box 10 comprising a frame 8 which at least partially surrounds a periphery of the water meter 6 and a cover 9 for covering the frame; and a passive repeater 4 attached to the cover 9 of the meter box 10, wherein the passive repeater comprises a first antenna 1 and a second antenna 2 which are in wired communication with one another, and wherein the passive repeater is configured such that, when the cover covers the frame, the first antenna 1 is located within an interior of the meter box 10 and the second antenna 2 is exposed to an exterior of the meter box 10; wherein the water meter 6 is wirelessly connected through the passive repeater 4 to a recipient device remote from the water meter system, and is configured to transmit data to the recipient device, the transmitted data comprising the consumption data.

The present invention relates to an industrial wireless network technique, and specifically relates to a 2.4 GHz-oriented light, thin, high-gain, reflection compensation-type IRS unit. The present invention mainly aims to solve complex situations such as direct link obstruction, blind spots, and dead zones in an industrial field, and satisfy the low costs and high reliability requirements of industrial wireless. Specifically, an IRS is introduced as a passive repeater to construct a reflection link to improve the coverage range of an industrial wireless network, and an unperforated metal layer structure and a three-piece top-layer connection structure are designed for the IRS. First, the unperforated metal layer structure extends a middle-layer transmission line, thereby effectively reducing the energy loss of an incident signal; and second, the three-piece top-layer connection structure provides a maximum resonance over-coupling range for two tunable devices embedded in the three-piece top layer connection structure. The present invention has low reflection gain loss and wide reflection phase span while being light and thin. In addition, the present invention also has extremely high voltage-phase adjustability and phase stability.