SAW Duplexer Broadens Communication Frequencies by Improving Performance

Murata has developed a compact SAW (Surface Acoustic Wave) duplexer that achieves higher steepness, a lower dissipation factor and more stable temperature characteristics than what has been seen in SAW devices up till now. As a result of these enhancements, frequency bands that could not be supported by conventional SAW devices will now be supported.

SAW devices filter out various frequencies, making them a vital component in smart phones and other communication terminals. In recent years, there has been increased demand for steep, low-dissipation-factor filter characteristics and stable temperature characteristics as a result of higher communication frequencies and closer proximity of frequency bands, both areas that could not be sufficiently supported by conventional SAW devices.

Murata has applied their unique expertise in the development of a new technology for propagating SAW energy more effectively than ever before and thereby commercialized a new SAW duplexer with more advanced performance, a lower cost, and a more compact size that can accommodate frequency bands not supported by conventional SAW devices. This has allowed them to expand their lineup of SAW devices compatible with a broad range of the frequency bands expected to increase in the future.

The development of this technology will enable quick responses to future market demands and help make RF circuits even smaller with better performance. The duplexer has been given a tentative name - SAYPE series and measures 1.8x1.4 mm. Mass production is scheduled to begin in early 2017.