Michigan State University

The Procter Gamble Company

Jeffrey Nanzer

Faiz Feisal Sherman

Stephan Gary Bush

Neda Nourshamsi

Corwin Hilton

The harmonic tag includes a ring resonator circuit and may include a first ring microstrip disposed on a first side of a first dielectric substrate, a microstrip feedline spaced apart from and adjacent to the first ring microstrip and a ground plane disposed opposite the first ring microstrip and the microstrip feedline on a second side of the first dielectric substrate. The ring resonator circuit is tuned to resonate at an interrogation frequency. A dipole antenna circuit may include a dipole microstrip electrically coupled to the microstrip feedline through a first diode. The first diode causes the dipole microstrip to transmit a harmonic signal having a harmonic frequency twice the interrogation frequency.

Harmonic RF tag for wireless measurement of multiple products

An imaging system including a transmitter configured to transmit a signal in a direction of a scene of interest. The transmitted signal is spatially and temporally incoherent at a point where the transmitted signal reaches the scene of interest. The system includes a receiver set including at least a first receiver and a second receiver. The first receiver and the second receiver are configured to receive a reflected signal. The reflected signal is a reflection of the transmitted signal from the scene of interest. The system further includes an active incoherent millimeter-wave image processor configured to obtain the reflected signal and reconstruct a scene based on the reflected signal. The system also includes a display device configured to display the scene.

Methods and systems for distributed radar imaging

A harmonic radar apparatus includes a transmitter configured to transmit a plurality of fundamental frequencies towards a scene. A further aspect of the harmonic radar apparatus includes a receiver configured to receive a reflected signal from the scene, the reflected signal being modulated based on the scene, and a re-radiated signal from a tag, the re-radiated signal being at a harmonic frequency of at least one of the plurality of fundamental frequencies transmitted by the transmitter.

Wireless monitoring system

A passive incoherent millimeter-wave imaging system includes a receiver array including a plurality of receive modules configured to receive a scene signal reflected from a scene. The scene signal is reflected in response to a plurality of incoherent communication signals being reflected off the scene, and the plurality of incoherent communication signals are spatially and temporally incoherent at a point when reaching the scene.

Imaging system using WiFi signals

Inferring product activity includes providing a first product having an attached first harmonic tag; directing, at a first area in which the first product is located, a first transmitted signal of a first frequency; and receiving a first return signal of a first return frequency from the first harmonic tag, wherein the first harmonic tag, upon receiving the first transmitted signal, radiates the first return signal, such that the first return frequency is a harmonic of the first frequency. A computer can then infer, based on the first return signal, a first activity in which the first product is being used.

Growing community of inventors

Okemos, MI, United States of America

Jeffrey Nanzer