The Ohio State University

Yeon Technologies Co., Ltd.

Wistron Neweb Corporation

Robert J Burkholder

Walter D Burnside

John Leonidas Volakis

Asimina Kiourti

Shuai Shao

Feng-Chi Eddie Tsai

Teh-Hong Lee

Chan-Ping Edwin Lim

Chan-Ping EdwinLim

According to the embodiments described herein, a stretchable RFID device can include an RFID chip and an RFID antenna. The RFID antenna can be electrically coupled and mechanically attached to the RFID chip. The RFID antenna can be impedance matched to the RFID chip across a broad bandwidth and can include two arms. Each of the two arms can include an end-loading body that at least partially surrounds an end-loading orifice. The end-loading body can stretch without consuming the end-loading orifice.

Stretchable broad impedance bandwidth RFID devices

RFID tag

An RFID antenna comprising an elongated structure existing along an axis that is long compared to the signal wavelength and including twin ribbon-like feed lines of electrically conductive material, the feed lines being in a common plane and being uniformly laterally spaced from one another, and a plurality of radiating perturbations associated with the feed lines at a plurality of locations spaced along the feed lines, at each location each feed line has its own individual perturbation or portion of a perturbation.

Elongated twin feed line RFID antenna with distributed radiation perturbations

This invention provides low profile distributed antenna which comprises a first and second elongated continuous conductors being kept parallel to each other and forming a transmission line, a plurality of perturbation radiators on the first elongated continuous conductor, wherein a substantial amount of radio frequency energy transmitted by the transmission line radiates from the plurality of perturbation radiators, therefore, the transmission line serves as a low profile distributed antenna.

Low profile distributed antenna

This invention provides an array antenna for a radio frequency identification (RFID) system, the array antenna comprises a transmission line with a longitudinal span proximately equaling to a height of a space desired to be covered by the array antenna, the transmission line having a terminal coupled to a RFID reader, and a plurality of radiating elements disposed on the first transmission line along the longitudinal span, additionally, reflective materials used behind the array antenna to maximize the illumination in the desired space and absorptive materials installed surrounding the desired space, in order to minimize the illumination of the undesired space surrounding the desired space.

RFID portal array antenna system

This invention provides a shelf antenna system for radio frequency identification (RFID) applications, the shelf antenna system comprises a plurality of substantially horizontal shelves, and a distributed antenna having a single feed terminal and a plurality of radiating elements, the distributed antenna being mounted next to the plurality of substantially horizontal shelves, wherein the entire shelf space of the plurality of substantially horizontal shelves are covered by radiations from the distributed antenna.

Growing community of inventors

Columbus, OH, United States of America

Robert J Burkholder