Dielectrically embedded flat mesh lens for millimeter waves applications

Pisano, Giampaolo ORCID: https://orcid.org/0000-0003-4302-5681, 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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Abstract

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:	25 Oct 2022 09:50
URI:	https://orca.cardiff.ac.uk/id/eprint/60238

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