FEM Enables Direct-to-Battery Operation

( 1 Nov 2009 )

SiGe Semiconductor has expanded its Wireless LAN and Bluetooth product range by introducing the high performance, highly integrated SE2579U front-end module (FEM) that is specifically targeted at the rapidly growing embedded applications markets, including WLAN-enabled cellular handsets, digital cameras and personal media players (PMPs). It is a complete 802.11 b/g/n 2.4 GHz WLAN RF FEM with a Bluetooth port in an ultra compact form factor (3mm x 3mm x 0.5mm). It is capable of simultaneous operation in both WLAN and Bluetooth receive mode without the degradation found in existing solutions. The device provides all the functionality of the power amplifier, power detector, filter, switch, low noise amplifier, 2,170MHz notch filtering, and associated matching. The SE2579U provides a complete WLAN RF single package solution from the output of the transceiver to the antenna, and from the antenna to the input of the transceiver. It is easy to deploy, with all the critical matching and harmonic filtering integrated, while also offering a simple 50Ω interface to the antenna. It includes a power detector with 20dB of dynamic range and a digital enable control for transmitter power ramp on/off control.