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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Abbaspour-Tamijani, A. |
| Copyright Year | 2010 |
| Description | Author affiliation: School of Electrical, Computer, and Energy Engineering, Arizona State University, P.O. Box 875706, Tempe, AZ 85287-5706 (Abbaspour-Tamijani, A.) |
| Abstract | This paper describes the design of a negative-index annular lens device intended for use as the core element of the beam-forming network in circular ring electronically-steerable arrays (ESA). Circular ring ESA's offer the benefit of full 360θ scan coverage, and hence are ideal for application in mobile and portable communication devices [1]. The proposed lens device can be used as an interface between the front-end electronic and the antenna elements, as depicted in Fig. 1. The lens has an annular geometry. The antenna ports are defined along the outer rim and electronic (or beam) ports lie on the inner rim of the device. The lens is made of inhomogeneous material, where the refractive index varies with radius. Antenna ports can be extended using equal lengths of transmission line to feed an array with a radius greater than that of the lens. This allows the lens itself to be designed as a miniature device, appropriate for integration with the rest of the front-end electronics. A single steerable beam is obtained by switching the feed point between different beam ports. Multiple beams are possible if the signal is routed to more than one beam port. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 147043 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424449675 |
| ISSN | 15223965 |
| DOI | 10.1109/APS.2010.5561240 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-07-11 |
| Publisher Place | Canada |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Lenses Phased arrays Materials Antenna radiation patterns Integrated circuit modeling Transmission line antennas |
| Content Type | Text |
| Resource Type | Article |
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