Skyworks Solutions, Inc. has unveiled its Helios II-Plus EDGE radio for next-generation quad-band handsets incorporating advanced multimedia features such as DVB-H, FM radios, MP3 players, digital cameras, and Web browsing. Helios II-Plus reduces RF board space by an additional 25 percent when compared to the company's previous Helios design. It interfaces with virtually any analog baseband and is optimized to simplify factory calibration
The Helios II-Plus is designed to surpass GSM and EDGE specifications under a variety of real-world conditions such as extreme temperature, low-battery voltage, and antenna mismatch. It also exceeds transmitted radiated power (TRP) specifications for improved current consumption.
Helios II-Plus includes the SKY74138 RF transceiver for multi-band GSM, GPRS, and EDGE applications. The receive path implements Skyworks' direct conversion architecture, consisting of four integrated low noise amplifiers (LNAs), a quadrature demodulator and selectable baseband filter. The transmitter path uses Skyworks' proprietary closed Polar Loop EDGE architecture. This enables it to be combined with virtually any standard GSM/EGPRS baseband without requiring any special processing interfaces.
The chipset also includes the SKY77523 Tx/Rx FEM, a transmit/receive (Tx/Rx) front-end module (FEM) with integrated coupler for quad-band GSM and EDGE applications. In addition, a CMOS integrated circuit provides the internal PAC function, interface circuitry, and decoder circuitry to control the RF switches.
Together, feedback signals from the SKY74138 and SKY77523 form an integral part of Skyworks' Polar Loop transmit architecture, which automatically adjusts amplitude and phase and is designed to deliver robust performance without relying on blind corrections of the power amplifier (PA) process variation like other EDGE transmit architectures.
Helios II-Plus is sampling today and is priced at $5.00 for quantities of 10,000. Volume production is scheduled to commence in the first calendar quarter of 2007. Click here for more information, www.skyworksinc.com.
Reduce power consumption in the mobile handset's radio chain.