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Characterized by high growth (38% CAGR) and short product life cycles, the mobile handset market has grown into a $135B industry
Wireless subscribers continue to demand more applications and features like Smartphones and PDAs which can seamlessly operate worldwide. ABI Research recognizes Smartphones as the key market driver, estimating that by 2013 one out of every three phones will be a Smartphone. Smartphones currently account for 21% of the market’s handset revenue and could grow to account for more than 70% by 2013.
The trend in the Smartphone segment is to continually reduce size and cost, while adding more features with adaptive operation over multiple global air interfaces. Developing this technology has its challenges. Each air interface in each country has unique spectral issues. Air interfaces like GSM, WCDMA, and LTE operate over different frequency ranges which are geographically defined and unique to each country. This suggests that network interference is different in each country as well. But what does this mean for mobile phones?
Handset filters are designed to operate over a very specific, pre-set frequency range
Current technology limits handsets to two frequency bands. But to enable the concept of worldwide seamless cellular service, a handset would need to incorporate more than 14 different filters. Therefore, a true world phone with 14 filters would be the size of a baseball mitt using today’s filtering technology.
Demand from the Smartphone segment for new applications, higher data rates and seamless worldwide coverage challenges handset OEMs to develop new ways of looking at handset technologies. STI is taking a proactive approach, soliciting its high performance filtering expertise to collaborate with OEMs on such challenges.
A unique approach
STI’s unique adaptive filtering technology enables handset OEMs to reduce cost and size of their filters; STI is currently engaged with industry leaders to assess how to best meet these challenges and demands for next generation handsets. Addressing this increasing demand, STI's unique concept for reconfigurable filters will enable concepts like the world phone to adapt to multiple frequencies and technologies.
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