News

15 October 2009

 

Skyworks front-ends power LG’s next-gen multimedia handsets

Skyworks Solutions Inc of Woburn, MA, USA, which manufactures linear products, power amplifiers, front-end modules and radio solutions for handset and infrastructure equipment, says that it is powering several of the newest multimedia handsets from LG Electronics as the South Korean firm launches its suite of next-generation, feature-rich mobile handsets. In particular, its 3G and 4G front-end solutions are at the heart of LG’s GM200, GR500 and KP500 platforms, which have enhanced touch-screen, audio, camera and messaging functionality.

Skyworks’ small and efficient SKY77175 dual-band power amplifier (PA) for WCDMA/HSDPA band II (1850-1910MHz) and band V (824-849MHz) is a fully matched, 14-pad surface-mount technology (SMT) module that meets the stringent spectral linearity requirements of WCDMA transmission, high power-added efficiency (PAE) for power output to 29dBm (Band II) and 29dBm (Band V), and a low-current analog pad (VCONT) to improve efficiency for the low RF power range operation.

The SKY77340 PA module is designed in a compact form-factor for quad-band cellular handsets comprising GSM850/900, DCS1800, PCS1900, supporting gaussian minimum shift keying (GMSK) and linear EDGE modulation, and Class 12 GPRS multi-slot operation. Two separate heterojunction bipolar transistor (HBT) PA blocks supporting the GSM850/900 bands and the DCS1800/PCS1900 bands are fabricated on indium gallium arsenide (InGaP) die. Inputs and outputs are impedance matched to 50 ohms, and a custom complementary metal oxide semiconductor (CMOS) IC provides the internal MFC function and interface circuitry.

The SKY77521 transmit and receive (Tx-Rx) front-end module (FEM) is designed in a very low-profile (1mm) compact form factor for quad-band cellular handsets comprising GSM850/900, DCS1800 and PCS1900 operation – making it a complete transmit VCO-to-antenna and antenna-to-receive surface-acoustic wave (SAW) filter solution. The FEM also supports Class 12 GPRS multi-slot operation and EDGE polar modulation. WCDMA switch-through support is provided by three dedicated high-linearity ports.

The SKY77531 Tx/Rx integrated phase and amplitude controller (iPAC) FEM is in a low-profile compact form factor, and supports quad-band cellular handsets operating in the GSM850/900 and DCS1800/PCS1900 bands as well as Class 12 GPRS multi-slot operation. The module consists of separate GSM850/900 and DCS1800/PCS1900 PA blocks, 50 ohm impedance-matched inputs and outputs, TX harmonics filtering, a high-linearity and low-insertion-loss pseudomorphic high-electron-mobility transistor (pHEMT) RF switch, and a PAC block with internal current sense resistor.

LG’s GM200 camera mobile phone has a 2.1 channel active sub-woofer with dual-side speakers, Dolby mobile, wireless FM radio with recording smart profiling, a 2 megapixel (MP) camera with video recording, Bluetooth 2.0, MicroSD memory port, radio alarm, and up to 10 hours of talk time.

The GR500 (or Xenon) features a large touch screen with vibration feedback and enhanced flash equating to increased functionality, full slideout four-line QWERTY keyboard, music player, speaker independent voice commands, enhanced user interface, MicroSD memory port, 2MP camera and camcorder with flash, is Bluetooth capable, and offers advanced messaging.

The KP500 uses a high-end full 3-inch touch-screen phone with improved navigation to watch videos, play motion-sensor games, and view photos. It also contains an active flash user interface (UI), handwriting and editing functionality, auto-rotating display, and an embedded stylus pen.

“As a valued business partner, we look forward to further enhancing our relationship with LG as they increasingly expand their global mobile communications presence,” says Liam K. Griffin, Skyworks’ senior VP, sales & marketing.

See related item:

Skyworks receives LG best supplier award for second consecutive year

Search: Skyworks LG

Visit: www.skyworksinc.com