Symbol Technologies, LLC

Guy P Roberts

Michael J Koch

Charles Rinkes

Joon Hwa Chun

Raymond Terry Durham

Loren Lawrence

A method of radio frequency identification (RFID) tag bearing estimation comprises: at an RFID tag reader having a plurality of antenna elements, emitting a primary transmit beam; receiving a response signal from an RFID tag via the antenna elements; generating a first set of signal measurements corresponding to a first set of receive beam characteristics, based on a first partition of the response signal; generating a second set of signal measurements corresponding to a second set of receive beam characteristics, based on a second partition of the response signal; and combining the first and second sets of signal measurements, for selection of an estimated tag bearing for the RFID tag from the first and second receive beam characteristics.

Method and apparatus for radio frequency identification (RFID) tag bearing estimation

An apparatus and techniques for detecting the loading and unloading of materials on a mobile structure are disclosed. The techniques can be used to detect when material is on a support structure of the mobile structure and to detect when the material is off the support structure of the mobile structure.

Growing community of inventors

Potomac, MD, United States of America

Guy P Roberts