The grooved-dielectric Fresnel zone plate: An effective terahertz lens and antenna

H. D. Hristov, J. M. Rodriguez, W. Grote

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A number of microwave and terahertz grooved-dielectric Fresnel zone plate (FZP) and ordinary lenses and antennas are studed and compared numerically. Although the microwave (38 GHz) eight-step FZP lens is certainly inferior, the corresponding terahertz (1.5 THz) FZP lens is comparable in focusing action to the ordinary one. By use of a new design approach to the terahertz FZP lens/antenna the typical unwanted focusing shift from the design frequency is removed and even better focusing performance is obtained within a limited frequency band. Thus, at terahertz frequencies the dielectric FZP lens or antenna is a lightweight and an effective option to the ordinary lens or antenna. © 2012 Wiley Periodicals, Inc.
Original languageEnglish
Pages (from-to)1343-1348
Number of pages6
JournalMicrowave and Optical Technology Letters
DOIs
Publication statusPublished - 1 Jun 2012

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