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EMI filters target cellphones supporting terrestrial DTV

Posted: 11 Oct 2006 ?? ?Print Version ?Bookmark and Share

Keywords:TDK? MEA1608PE? multilayer chip? EMI filter arrays? noise countermeasure?

TDK Corp. has announced the development of the MEA1608PE series multilayer chip EMI filter arrays. The company said these products are the industry's smallest and lightest noise countermeasure components intended for mobile terminals that are compatible with terrestrial digital television broadcasts.

Terrestrial digital television broadcasts for mobile terminals ("one-segment") began in Japan in April 2006. In addition, DVB-H format broadcasts are spreading in Europe. In conjunction with this, development and use of television tuners designed specifically for cellphones and notebook PCs is progressing rapidly. These tuners, particularly when used in cellphones, must handle not only the frequency band used for communications (800MHz to 2GHz), but also that for broadcasts (470MHz to 770MHz), and consequently, noise countermeasures have become more important in device design and miniaturization.

TDK began mass production and shipments of the 2010-size MEA2010PE series of "one segment" compatible noise filter arrays in December 2005, but there was demand for even more compact components. In response, TDK developed even-smaller 1.6-by-0.8-by-0.5mm products with the same characteristics as the 2010 components.

The filters attenuate noise in the 470MHz to 770MHz range used for terrestrial digital broadcasts while placing particular emphasis on preventing deterioration of circuit waveform quality. These products use optimal materials and pattern designs to achieve ideal noise countermeasures for terrestrial digital broadcasts. The product lineup includes four filter arrays that can be used for devices with terrestrial digital television broadcast tuners as well as a wide range of other noise countermeasure applications in the 470MHz to 2GHz range.

Production of these Pb-free devices will start this month. Pricing is 25 cents per unit for all products.

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