A detection device (DD) is fitted in a system (S) comprising a closed space (EF) with a metallic environment and comprising objects (O) provided with wave-transmitting/receiving identification elements. Said device (DD) comprises an identification reader (LI) which exchanges messages with the identification elements (EI) via a wave-transmitting/receiving antenna (AER), which reader is installed inside the closed space (EF), in order to detect the presence of said waves, and a metasurface (MS1) installed inside the closed space (EF) and configured so as to reflect, according to a first chosen law, waves which originate from the antenna (AER) and are intended for the identification elements (EI) and, according to a second chosen law, waves which originate from the identification elements (EI) and are intended for the antenna (AER).

An attachable booster antenna attachable to a coil antenna, includes a body; and an antenna including a multiple resonant antennas arrayed on the body, with each resonant antenna including an insulator layer having first and second surfaces; and first and second loop antennas disposed on the first and second surfaces, respectively, so as to confront each other via the insulator layer. Moreover, the first and second loop antennas each having an opening that discontinue a part of a loop and are arranged such that a closed loop is defined by at least a part of the first loop antenna and at least a part of the second loop antenna in a transparent plane viewed from a normal direction of the insulator layer. Furthermore, in the plan view of the insulator layer, the opening of the first and second loop antennas and the opening of the coil antenna overlap each other.

The present disclosure relates to a reader, such as a reader for a physical access control system. The reader can include first and second antennas, each designed or configured for receiving ultra-wide band (UWB) signals. The reader can also include a mounting plane configured for mounting the reader to a surface. An axis aligning the first and second antennas can be arranged substantially perpendicular relative the mounting plane. A material can be provided between the first and second antennas The material can have a thickness that defines a distance between the first and second antennas of less than a half wavelength of the UWB signal through air (λ.sub.A/2), the material configured to slow down electromagnetic waves passing therethrough such that the thickness of the material provides an effective separation distance of the first and second antennas of at least a half wavelength of the UWB signal through air (λ.sub.A/2).

The present invention relates to technological improvements, use of these improvements and data analysis to provide for improved surgical procedure efficiency, efficacy, and safety. Specifically, improved radio frequency identification (RFID) enabled technology is utilized to discover and rectify significant inefficiencies, safety concerns and risks involved with surgical procedures through improved surgical implement tracking, both temporally and spatially, and data analytics for gathering, tracking and analyzing of instrument use singly and in combination.

A communication apparatus includes an antenna, an actuator assembly, a transducer, and a controller. The actuator assembly is configured to move the antenna in two dimensions relative to a space configured to contain a wireless tag. The transducer is configured to provide phase data indicating a phase of a signal transmitted from the wireless tag in at least (a) a first detection condition in which the antenna has a first position relative to the space and (b) a second detection condition in which the antenna has a second position relative to the space. The controller is configured to determine whether the wireless tag is located inside of the space based on the phase data.

Described is the design, implementation, and evaluation of a robotic system configured to search for and retrieve RFID-tagged items in line-of-sight, non-line-of-sight, and fully-occluded settings. The robotic system comprises a robotic arm having a camera and antenna strapped around a portion thereof (e.g. a gripper) and a controller configured to receive information from the camera and (radio frequency) RF information via the antenna and configured to use the information provided thereto to implement a method that geometrically fuses at least RF and visual information. This technique reduces uncertainty about the location of a target object even when the object is fully occluded. Also described is a reinforcement-learning network that uses fused RF-visual information to efficiently localize, maneuver toward, and grasp a target object. The systems and techniques described herein find use in many applications including robotic retrieval tasks in complex environments such as warehouses, manufacturing plants, and smart homes.

RFID devices comprising (i) a transponder chip module (TCM, 1410) having an RFIC chip (IC) and a module antenna (MA), and (ii) a coupling frame (CF) having an electrical discontinuity comprising a slit (S) or non-conductive stripe (NCS). The coupling frame may be disposed closely adjacent the transponder chip module so that the slit overlaps the module antenna. The RFID device may be a payment object such as a jewelry item having a metal component modified with a slit (S) to function as a coupling frame. The coupling frame may be moved (such as rotated) to position the slit to selectively overlap the module antennas (MA) of one or more transponder chip modules (TCM-1, TCM-2) disposed in the payment object, thereby selectively enhancing (including enabling) contactless communication between a given transponder chip module in the payment object and another RFID device such as an external contactless reader. The coupling frame may be tubular. A card body construction for a metal smart card is disclosed.

Provided are an antenna apparatus and an electronic device. The antenna apparatus includes a radiator, a near-field communication chip and a first non-near-field communication chip. The radiator includes a ground point and a first feeding point that are spaced apart from each other, and the ground point is grounded. The near-field communication chip is configured to provide a differential excitation current. The first non-near-field communication chip is configured to provide a first non-near-field communication excitation current.

A sensor probe with reduced coupling between the various antenna elements and suppression of radio frequency interference. In one embodiment the sensor probe comprises a first antenna and a second antenna. A first and a second decoupling loop is electrically connected to one of the first and second antennas with current flow in opposite directions in the first and second decoupling loops. A third decoupling loop is electrically connected to another one of the first and second antennas and physically disposed between the first and second decoupling loops. Coupling between the first and second antennas is responsive to a location of the third decoupling loop relative to the first and second decoupling loops.

An RFID-enabled storage container and systems and methods for assembly and use thereof. The RFID-enabled storage container may include adjustable shelving with built-in antennas, such that the shelving may be customized as may be needed. The system may include a storage container, an inventory management system, and one or more point of use terminals. The storage container may identify and check inventory stored thereon, and provide such information to the inventory management system. The storage container may notify the inventory management system when a product is no longer detected within its inventory, and the inventory management system may monitor the one or more point of use terminals to determine if the undetected product has been used at one of the point of use terminals. The inventory management system may also predict inventory needs as well as maintain age and other data for inventory and provide feedback via an illumination indication.