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- W2135618744 abstract "The antennas described in this paper employ further developments of a method of construction used in a flat-plate antenna for DBS applications described by Henderson and James (1987). This was a high-gain array antenna intended for operation between 11.7 and 12.1 GHz, and at these frequencies, dielectric losses in conventional substrates are unacceptably high, but the low-loss substrates available then were too expensive to use in a product intended for the consumer market. The solution adopted therefore was to use an inexpensive substrate material with a low relative permittivity, and thereby achieve low dielectric losses. Henderson et al. used a flexible plastic foam with a relative permittivity of 1.06 as the substrate material. In this paper, the study is extended to explore the use of an expanded polystyrene foam with a relative permittivity of around 1.05 which although exhibiting greater probable variation in its mechanical and electrical properties, is even less expensive and more widely available. (5 pages)" @default.
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- W2135618744 date "1998-01-01" @default.
- W2135618744 modified "2023-09-24" @default.
- W2135618744 title "Low cost linear arrays using polystyrene foam substrate" @default.
- W2135618744 doi "https://doi.org/10.1049/ic:19980077" @default.
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