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Murata develops and starts volume production of world is smallest SAW duplexers, filters Contributing to Denser Circuit Design and Enhanced Smartphone Functionality

2019-07-16 | Return

The steady improvement in smartphone performance is driving the demand for more compact electronic components. In particular, there is an acute need for smaller SAW devices that transmit and receive signals at certain frequencies. In order to support multiple band operation, middle-class smartphones for specific regions use 14 or 15 SAW devices while premium models with global compatibility may adopt as many as 30 to 40 SAW devices. By fully revising the chip design and packaging approach making use of its own proprietary design and miniaturization technology, Murata has developed the Products with characteristics equal or superior to those of conventional products while simultaneously achieving the world&lqquot&s smallest size.

Highlights
The key features of the Products are as follows:

The World&lqquot&s Smallest SAW Devices
The SAYAV Series, SAYRV Series, and SAYAP Series of SAW duplexers supporting the 700MHz to 2.6GHz bands are packaged in 1.6mm x 1.2mm (length x width) form factor, and SAFFW Series of SAW filters are packaged in a 0.9mm x 0.7mm (length x width) form factor, making the duplexers approx. 24% and the filters approx. 37% smaller than conventional models*4. This makes possible significant reductions in mounting area on electronic circuits and contributes to high-density circuit design.
*4 Compared with a 1.8mm x 1.4mm SAW duplexer and a 1.1mm x 0.9mm SAW filter, respectively

Size comparison of the new and conventional models

Realizing Characteristics Equal or Superior to Those of Conventional Products
By leveraging its own design and miniaturization technology, Murata has achieved excellent characteristics while minimizing the degradation of characteristics associated with reduced size. The Products exhibit transmission*5 and isolation characteristics*6 equal or superior to those of conventional products. They are also among the first such products to realize improved power durability that meets the higher power requirements that will be required by future smartphones beginning with those being developed for use with the 5th generation mobile communications system (5G).
*5 The degree of transmission loss between the antenna and the transmitting/receiving circuits
*6 A characteristic that separates the filtering functions for transmitting and receiving in duplexers

A Lineup Covering the Major Frequency Bands
The lineup includes products compatible with the major frequency bands of the frequency band classification standard defined by the standardization organization 3GPP*7.

Lineup and supported frequency bands

Murata will expand this product lineup to support major communications bands between 700MHz and 2.6GHz by the end of FY2019. The company is also developing products compatible with the sub-6 GHz and the 3GHz to 6GHz bands that are expected to be used in 5G. Murata will continue developing smaller products that meet the needs of the market and of its customers, in order to contribute to saving space on electronic circuit boards and facilitating high-density circuit design.

Source：http://www.murata.com/