Planar flexible rf tag and charging device

Abstract

A planar flexible ultra-wide band (UWB) RF antenna includes a flexible non-electrically-conductive substrate and at least one antenna patch having electrically conductive metal positioned on one side of the flexible non-electrically-conductive substrate and having geometry defining a wirelessly transmitted UWB signal. The antenna may electrically couple with an RF transmitter circuit formed on a second side of the flexible substrate and controlled by a microcontroller circuit, formed on the second side, to transmit a radio signal. The RF tag may include at least one decoupling circuit directly electrically connected to the RF antenna and having a decoupling frequency that is different from a transmitting frequency of the antenna. The decoupling circuit transfers power from the antenna when the antenna receives capacitive power from an external non-electrical contact charger operating at the decoupling frequency and having at least one plate of similar geometry to the at least one antenna patch.

Dependencies are inferred from the claim text.