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Recently, many countries are switching their terrestrial television broadcasting from analog to digital and the demand of TV reception increases for mobile devices and automobiles. The antenna for this purpose is required to be compact, light-weight. It is also desirable that the antenna can work even located close to neighbouring objects, especially metallic ones, so as to be installed into narrow...
We developed a PIFA made of flexible printed circuit, which is available for Bluetooth and IEEE802.11a/b/g applications. We measured the characteristics of the antenna when it is folded along the coaxial cable. It is shown that the characteristics do not vary much when the angle of folding is less than 90deg. The performance is confirmed by a simulation based on the FDTD method. The antenna is expected...
By using the magnetic lithography technique previously reported, an optical grating can be easily formed not only on a plane, but also on a convex or concave surface. The optical characteristics of this relief-type grating depend on its cross-sectional shape. To apply this technology to encoder plates, it is important to investigate the factors determining the shape of a grating produced by magnetic...
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