RF Subsystem Supports Variety Of Cellular Femtocells

Nov. 12, 2008

A FULLY INTEGRATED RF SUBSYSTEM has been created for GSM, GPRS, and EDGE femtocell base stations and cellular repeaters. By combining analog and mixed-signal semiconductors on a compact assembly, the subsystem can be used in femtocell base station and cellular repeaters in the GSM850, EGSM900, DCS1800, and PCS1900 frequency bands. The dual-chip RF subsystem solution consists of the SKY74219-21 RF transceiver with analog in-phase/quadrature (I/Q) interface for quad-band GSM, GPRS, and EDGE applications and the SKY65330 transmit/receive front-end module (FEM). The transceiver incorporates a fractional-N frequency synthesizer with voltage-controlled oscillator (VCO) and crystal oscillator reference for tuning, a closed-polar-loop transmitter, and a direct-conversion receiver. The FEM includes two heterojunction-bipolartransistor (HBT) power-amplifier (PA) blocks and high-speed switching on an indium-gallium-phosphide (InGaP) die. P&A: $15.00 (each subsystem); 10,000 qty.

Skyworks Solutions, Inc., 20 Sylvan Rd., Woburn, MA 01801; (781) 376-3000; E-mail: [email protected]; Internet: www.skyworksinc

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About the Author

Nancy Friedrich

RF Product Marketing Manager for Aerospace Defense, Keysight Technologies

Nancy Friedrich is RF Product Marketing Manager for Aerospace Defense at Keysight Technologies. Nancy Friedrich started a career in engineering media about two decades ago with a stint editing copy and writing news for Electronic Design. A few years later, she began writing full time as technology editor at Wireless Systems Design. In 2005, Nancy was named editor-in-chief of Microwaves & RF, a position she held (along with other positions as group content head) until 2018. Nancy then moved to a position at UBM, where she was editor-in-chief of Design News and content director for tradeshows including DesignCon, ESC, and the Smart Manufacturing shows.