YOKOHAMA, JAPAN: Fujitsu Media Devices has developed the world's smallest SAW duplexers (for bands I, II, IV, V and VIII) for W-CDMA mobile phones and SAW filters for GSM (850, 900, 1800 and 1900) technology, using a hermetic seal structure.
Fujitsu Media Devices has once again taken the lead in contributing to space-saving within mobile phones for RF components by using a hermetic seal structure to develop the world's smallest W-CDMA SAW duplexers and GSM SAW filters.
Product characteristics include:
* The use of a hermetic seal structure has realized the world's smallest size while maintaining MSL1. * Compatible with interfaces for the currently predominant transceiver ICs.
(MSL stands for Moisture Sensitivity Levels and is based on the resistance of semi-conductor packages to humidity and moisture absorbency. A rating of 1 indicates that re-flow soldering can be done without any dry process.)
The SAW duplexers use 50ohm unbalanced interface for the antenna and transmitter pins and 100ohm balanced interface for the receiver pins.
The SAW filter's input interface is 50ohm, unbalanced, and the output interface is 150ohm, balanced.
Research indicates that demand for mobile phones in 2008 will approach 1.3 billion units, of which 230 million units are likely to be W-CDMA compatible, nearly all of which will include the GSM function.
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