Abstract: A tracking device includes an antenna, a printed energy storage device, a transmitter powered by the printed energy storage device, and control circuitry configured to control the transmitter to transmit, using the antenna, information indicating a status detected by a sensor.

Abstract: A hybrid radiating element may comprise a dielectric substrate having a thickness, a top surface and a bottom surface, and an electrically conductive patch disposed on the top surface of the dielectric substrate. The hybrid radiating element may further comprise a graphene stub disposed on the top surface of the dielectric substrate. The graphene stub may be contiguous with, and electrically coupled to, the electrically conductive patch. The hybrid radiating element may further comprise an electrically conductive layer disposed on the bottom surface of the dielectric substrate. An array of hybrid radiating elements may be arranged in a grid pattern of M rows and N columns. A codebook set of biasing voltages may be arranged to drive the radiating elements in the array as a phase transformation matrix, thereby manipulating the reflection of an incoming electromagnetic wave.

Abstract: A tracking device includes an antenna, a printed energy storage device, a transmitter powered by the printed energy storage device, and control circuitry configured to control the transmitter to transmit, using the antenna, information indicating a status detected by a sensor.

Abstract: A tracking device includes an antenna, a printed energy storage device, a transmitter powered by the printed energy storage device, and control circuitry configured to control the transmitter to transmit, using the antenna, information indicating a status detected by a sensor.

Abstract: An apparatus includes a printed antenna, a printed battery, a transmitter powered by the printed battery, and control circuitry configured to control the transmitter to transmit, using the printed antenna, information detected by a sensor.

Abstract: The present invention is a tracking device for use in an LPWAN network, a system for using the tracking device, and a method of using the tracking device. The invention has the advantages of having a small form factor, low power consumption requirements, and long data transmission capabilities. In an embodiment, we describe a tracking device wherein the majority of the electronics are printed on a single substrate. In one variant of this embodiment, only a sensor could be located off-substrate. Embodiments disclosed herein provide a low-cost, versatile tracking device that can provide accurate analytics about a movable article to individuals or machines seeking information related to at least one of a panoply of metrics that could be reported about the moveable article.

Abstract: An antenna system includes an elongated conductive plane and an elongated dielectric layer that is disposed on the conductive plane. An elongated graphene nanoribbon is disposed along an axis and is coupled to the dielectric layer at a graphene/dielectric interface. A feeding mechanism is coupled to the conductive plane. The feeding mechanism is configured to accept a signal that excites surface plasmon polariton waves at the graphene/dielectric interface. In a method of making a surface plasmon polariton wave antenna, an elongated conductive plane is formed. An elongated dielectric layer is applied on a surface of the conductive plane. An elongated graphene nanoribbon is applied to the dielectric layer. A signal source is coupled to the elongated conductive plane.

Abstract: An antenna system includes an elongated conductive plane and an elongated dielectric layer that is disposed on the conductive plane. An elongated graphene nanoribbon is disposed along an axis and is coupled to the dielectric layer at a graphene/dielectric interface. A feeding mechanism is coupled to the conductive plane. The feeding mechanism is configured to accept a signal that excites surface plasmon polariton waves at the graphene/dielectric interface. In a method of making a surface plasmon polariton wave antenna, an elongated conductive plane is formed. An elongated dielectric layer is applied on a surface of the conductive plane. An elongated graphene nanoribbon is applied to the dielectric layer. A signal source is coupled to the elongated conductive plane.

Abstract: A communication element includes a high electron mobility transistor including a gate layer. A graphene layer is disposed on the gate layer. A communication system includes a signal source, a plasmonic transmitter, a first plasmonic antenna, a second plasmonic antenna, a plasmonic receiver and a signal detector. The signal source generates a transmitted signal. The plasmonic transmitter generates a first surface plasmonic polariton wave signal corresponding to the transmitted signal. The first plasmonic antenna generates an electromagnetic signal corresponding to the surface plasmon polariton wave signal. The second plasmonic antenna generates a second surface plasmon polariton wave signal corresponding to the electromagnetic signal. The plasmonic receiver generates a received signal corresponding to the second surface plasmon polariton wave signal. The signal detector detects the received signal.

Abstract: A communication element includes a high electron mobility transistor including a gate layer. A graphene layer is disposed on the gate layer. A communication system includes a signal source, a plasmonic transmitter, a first plasmonic antenna, a second plasmonic antenna, a plasmonic receiver and a signal detector. The signal source generates a transmitted signal. The plasmonic transmitter generates a first surface plasmonic polariton wave signal corresponding to the transmitted signal. The first plasmonic antenna generates an electromagnetic signal corresponding to the surface plasmon polariton wave signal. The second plasmonic antenna generates a second surface plasmon polariton wave signal corresponding to the electromagnetic signal. The plasmonic receiver generates a received signal corresponding to the second surface plasmon polariton wave signal. The signal detector detects the received signal.