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SAW filters ensure stable communications

Posted: 24 Jul 2009     Print Version  Bookmark and Share

Keywords:saw filters  WiMAX  wireless communications 

Kyocera SAW filter

Kyocera has released two types of compact SAW filters—SF3030B2G600T10MAL0 for reception and SF2525E2G620T10MAH0 for transmission—that improve the prevention of radio wave interference in next-generation high-speed wireless communication networks such as WiMAX.

The SAW filters are claimed to be the first in high-frequency range of 2.6GHz to feature high selectivity and low loss characteristics. Samples of the new SAW filters are currently available.

SAW filters are used to separate desired signals in high-frequency bands. The 2.6GHz range, which is used by diverse communications networks, is a particularly highly congested frequency. Consequently, these new compact SAW filters were developed to improve usability in order to assure stable communications through the prevention of radio wave interference with other systems in adjacent signals during data transmissions and data communications in next-generation high-speed wireless networks.

Using circuit design, simulation and microfabrication technologies, Kyocera has achieved a 30dB typ. attenuation of signals adjacent to 5MHz-wide bands in the 2.6GHz range, boasting an insertion loss of only 2.5dB typ. This is touted to be an industry-first in the development of compact SAW filters for the prevention of radio wave interference.

As high-speed mobile wireless communication networks including WiMAX, Wi-Fi and XG-PHS are expected to show further growth, the demand for SAW filters is also expected to expand due to their effective application in high-speed mobile wireless communication networks and related devices, and wireless measuring instruments such as testers for wireless communications devices.

- Henri Arnold
EE Times Europe

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