CPC Class H04W

The present disclosure describes systems and methods of fraud protection. A listening device may monitor ambient sound and detect one or more triggering sound patterns. The listening device may record the one or more triggering sound patterns and record a person's voice, and send the recordings to a server, wherein the server is configured to calculate a confidence level of fraud based on the one or more triggering sound patterns and the recording of the person's voice using a speech pattern model of the person, and to output an alert if the confidence level of fraud is greater than a threshold value.

Device, circuit, system, and method for contact sequencing are discussed. An electrical circuit includes a first pair of terminals adapted to be connected across a first set of switchable contacts, and a second pair of terminals adapted to be connected across a second set of switchable contacts that are coupled to an arc suppression circuit. A controller circuit is coupled to the first and second pairs of terminals and is configured to sequence activation or deactivation of the first and second sets of contacts based on a contact control signal. A first power switching circuit is coupled to the first pair of terminals and the controller circuit. The first power switching circuit is configured to switch power from an external power source and to trigger the activation or the deactivation of the first set of switchable contacts based on a first logic state signal from the controller circuit.

A power contact EoL predictor includes a pair of terminals adapted to be connected to a set of switchable contact electrodes of a power contact; a power switching circuit configured to trigger activation of the contact electrodes based on a first logic state signal or deactivation based on a second logic state signal; a contact separation detector determining a time of separation of the switchable contact electrodes of the power contact during the deactivation, and a controller configured to generate the second logic state signal to trigger the deactivation, and determine a stick duration associated with the set of switchable contact electrodes. The stick duration is based on a difference between a time the second logic state signal is generated and the time of separation during the contact cycle. The controller generates an EoL prediction for the contact electrodes based on the determined stick duration for multiple contact cycles.

An assembly for mounting a wireless access point includes a base panel configured to be mounted to a post and to support the access point. The assembly includes a shroud configured to at least partially surround the base panel, the access point, and the post. The assembly can also include an antenna support configured to support an antenna coupled to the access point and configured to rotate between a first position and a second position. A method of mounting the access point to the post includes mounting, to the post, the base panel supporting the access point. The method also includes, after mounting the base panel to the post, coupling the shroud to the base panel such that the shroud at least partially surrounds the base panel, the access point, and the post.

An antenna array that can include a plurality of antenna cells positioned in a global coordinate system of the antenna array. Each of the plurality of antenna cells has a respective local coordinate system and can include a radiating element having a predetermined angle of rotation defined in the global coordinate system and an antenna port coupled to the radiating element, the antenna port being positioned at a particular set of coordinates in the respective local coordinate system. The particular set of coordinates of the antenna port of each of the plurality of antenna cells can be the same.

Aspects of the subject disclosure may include, a system that includes a coupler having a structure that facilitates guiding electromagnetic waves along a transmission medium, wherein the electromagnetic waves propagate along the transmission medium without requiring an electrical return path, and a device coupled to an outer surface of the structure, wherein the device facilitates steering a wireless signal generated by a flow of an electrical current on the outer surface of the structure. Other embodiments are disclosed.

Provided is an antenna that can facilitate favorable communications even if no metal body is located near the antenna and even if the antenna is located within a metal body. An antenna is characterized in that the antenna comprises: a core (11) having a plane; a coil winding part (area B) of the plane about which a coil is wound; and no-coil winding parts (areas A, C) of the plane about which no coil is wound, wherein the coil winding part is sandwiched between the no-coil winding parts in the axial direction of the coil on the plane, and the width of the plane in the axial direction of the coil is equal to or greater than the width of the plane in the winding direction of the coil.

RF (radio frequency) charging access points charge IoT (Internet of things) devices. RF charging service is advertised through periodically broadcast beacons. A MU-MIMO group or other group is formed from a plurality of stations connected to the access point for RF charging. RF packets are transmitted to stations in the MU-MIMO group, each station including RF charging circuitry to harvest reusable energy from the RF packets.