13 July 2010


Skyworks’ PA module used in first commercial LTE device

Skyworks Solutions Inc of Woburn, MA, USA, which makes linear products, power amplifiers, front-end modules and radio solutions for handset and infrastructure equipment, says that one of its power amplifier (PA) modules is being used by Samsung Electronics for its GT-B3710, a high-speed fourth-generation (4G) USB modem that is claimed to be the world’s first long-term evolution (LTE)-commercialized device.

The SKY77706 LTE PA module (PAM) is designed for multiple handset and data-card applications and allows consumers to enjoy the benefits of high-speed data services such as web TV broadcasting, online gaming and web conferencing. Skyworks says that today's 4G systems offer a comprehensive solution where data and streamed multimedia can be given to users anytime, anywhere at higher data rates than previous generation networks.

LTE network commitments are increasing worldwide, says Skyworks’ senior director of engineering Dr Gene A. Tkachenko. Skyworks is providing next-generation solutions to help boost network throughput, improve efficiency and performance, and simplify roaming regardless of the platform, he adds.

Samsung's GT-B3710 LTE USB modem can be connected to laptop computers or other portable devices via universal-serial bus (USB). It incorporates Samsung’s in-house developed LTE modem chip supporting the 2.6GHz band for LTE service. The firm’s LTE solution is fully compliant with the latest third-generation Partnership Project (3GPP) LTE Release 8 (Rel-8) standard.

The SKY77706 PAM is a fully matched, surface-mount module developed for LTE/EUTRAN applications that packs full coverage of LTE FDD Band VII into a single compact package. Skyworks says that the device meets the stringent spectral linearity requirements of LTE modulation with QPSK/16QAM modulations from 1.4MHz to 20MHz bandwidth and full or partial resource block allocations with high power added efficiency (PAE).

The single gallium arsenide microwave monolithic integrated circuit (MMIC) contains all active circuitry in the module, including the PA, input, and interstage matching. The SKY77706 is manufactured using Skyworks’ bipolar field-effect transistor (BiFET) process, which provides for all positive voltage direct current (DC) supply operation while maintaining high efficiency and good linearity.

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