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Dielectrically embedded flat mesh lens for millimeter waves applications

Pisano, Giampaolo, Ng, Ming Wah, Ozturk, Fahri, Maffei, Bruno and Haynes, Vic 2013. Dielectrically embedded flat mesh lens for millimeter waves applications. Applied Optics 52 (11) , pp. 2218-2225. 10.1364/AO.52.002218

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A flat lens based on subwavelength periodic metal meshes has been developed using photolithographic techniques. These mesh grids are stacked at specific distances and embedded in polypropylene. A code was developed to optimize more than 1000 transmission line circuits required to vary the device phase shift across the lens flat surface, mimicking the behavior of a classical lens. A W-band mesh-lens prototype was successfully manufactured and its RF performance characterized using a vector network analyzer coupled to corrugated horn antennas. Co-polarization far-field beam patterns were measured and compared with finite-element method models. The excellent agreement between data and simulations validated our designing tools and manufacturing procedures. This mesh lens is a low-loss, robust, light, and compact device that has many potential applications including millimeter wave quasi-optical systems for future cosmic microwave background polarization instruments.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: Optical Society of America
ISSN: 0003-6935
Last Modified: 04 Jun 2017 06:27

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