Abstract
In this work the concept of a Fresnel zone antenna for dual-band detection in the IR and millimeter wave region is presented. The design is based on a Fresnel zone plate lens in the IR that is transformed to serve as a millimeter-wave antenna. Two different designs are presented, a circular-zone design that gives a high diffractive efficiency in the IR and a square-zone design that gives a higher response in the millimeter band but a lower focusing efficiency in the IR. Both designs have an operation bandwidth with the same low frequency limit of , which can be tailored by changing the number of Fresnel zones, and a high frequency limit of for the circular-zone design and for the square-zone design.
© 2009 Optical Society of America
Full Article | PDF ArticleMore Like This
Francisco Javier González, Javier Alda, Bojan Ilic, and Glenn D. Boreman
Appl. Opt. 43(33) 6067-6073 (2004)
Ethan Schonbrun, Winnie N. Ye, and Kenneth B. Crozier
Opt. Lett. 34(14) 2228-2230 (2009)
Xiaocha Liu, Xiaoyi Wang, Guo-Min Yang, Dang Xiang, and Li-Rong Zheng
Opt. Express 32(8) 13851-13863 (2024)