University of Illinois

Paul J Froeter

Xiuling Li

Wen Huang

A wireless communication device includes an array of helical antennas on a substrate. Each helical antenna comprises a strain-relieved sheet with a conductive strip thereon, where the strain-relieved sheet and the conductive strip are in a rolled configuration about a longitudinal axis. The conductive strip is oriented at an angle &#x3b1; with respect to a rolling direction so as to comprise a helical configuration about the longitudinal axis with a non-zero helix angle &#x3b2;. The array exhibits a maximum gain of at least about 10 dB at a working frequency of at least about 0.1 THz.

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Urbana, IL, United States of America

Paul J Froeter