Exploding Demand for Smartphone Filters
“The market for RF duplexers alone will reach $2.5 billion in 2016,” said Yoshiyasu Andoh, president of market research firm Navian. “The wide use of WCDMA and increasing number of LTE bands is driving demand for duplexers at a significant rate. As RF complexity increases, we expect to see further integration of passives components such as filters and duplexers with active components like power amplifiers and switches.”
High-Performance 4G Filtering
The demand for high-performance filters is exploding as LTE networks deploy and Wi-Fi becomes ubiquitous. New 4G frequency bands are usually assigned next to pre-existing bands for Wi-Fi and Bluetooth services, often with minimal guard bands. TriQuint’s bulk acoustic wave (BAW) and temperature-compensated (TC-SAW) technologies are instrumental in enabling simultaneous voice and data for 4G smartphones that operate on many different frequency bands, often in multiple regions of the world. Since 2006, TriQuint has shipped more than 2 billion SAW filters and nearly 1 billion BAW filters.*
Besides mobile devices, TriQuint innovations in SAW, TC-SAW and BAW devices have become the bedrock of the world’s most advanced radar and communications systems, through R&D with partners like the Defense Advanced Research Projects Agency (DARPA). TriQuint is the only high-volume RF supplier that offers all three filter technologies, either as stand-alone devices or integrated modules. By combining active and passive components into tiny modules, TriQuint uses innovations like CuFlip™ and its new wafer level packaging (WLP) process to deliver size, cost and performance advantages.
TC-SAW and BAW: Enabling 4G Smartphones
SAW filters are
well suited for most frequencies up through 1.9 GHz, such as standard GSM, CDMA, and 3G bands. Some new 3G and 4G WCDMA duplexers and filters are best served by TC-SAW, which reduces temperature drift for more challenging specifications. For example, TriQuint uses TC-SAW to support Band 13, Band 20 and Band 26 duplexers.
BAW is ideal for many of the new LTE bands above 1.9 GHz, delivering superior performance with lower insertion loss, steeper slopes and excellent rejection. BAW excels in applications where the uplink and downlink separation is minimal and when attenuation is required in tightly-packed adjacent bands. TriQuint harnesses the advantages of BAW technology to serve the following bands: Band 3, Band 7, Band 25, Band 38, Band 40 and Band 41, as well as Wi-Fi co-existence filters.