The use of a deformable photonic crystal for millimeter-wave beam steering

Shawn Yu Lin*, Zu-Po Yang, Mingfeng Chen, James A. Bur, A. Levitan, Lester H. Kosowsky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


A deformable photonic band gap (PBG) material is theoretically proposed as a transmissive element for beam steering at 77 GHz. The deformation may be achieved by integrating microsprings (as spacers) into a one-dimensional PBG structure. This PBG material can produce a specific phase shift dependent on its spacer thickness. By varying the spacer thickness, we generate a continuous phase gradient across the element. Such a PBG device is experimentally realized, capable of beam deflection of up to ±15° and suitable for beam scanning for smart automobile radar application.

Original languageEnglish
Article number031112
JournalApplied Physics Letters
Issue number3
StatePublished - 1 Feb 2008

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